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In view of the problems that traditional static load test (SLT) takes a long time, large site occupied and high risk, the Rapid Load Test (RLT) method was introduced in Johor Bahru-Singapore Rapid Transit System project. The basic theory of RLT was introduced, and RLT and SLT correlation tests were conducted on test piles. The results show that the settlement under RLT test is smaller than that under static load test, so correlation correction should be carried out if RLT is used to replace SLT in the working load test of piles in the project, the skin friction and end bearing forces obtained from RLT and SLT of rock socketing piles are differentially distributed, and friction force in the RLT test is relatively more concentrated at the bottom compared to the SLT, while the total values of friction and end bearing forces are comparable to the results of the static load. It is feasible to use the RLT test as an alternative to the static load test in the geological condition of Bukit Timah Granite in Singapore. [ABSTRACT FROM AUTHOR]

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Intercity railways in urban agglomerations serve as critical transportation infrastructure, playing a key role in supporting and guiding the advancement of new urbanization in China. The functional orientation and technical standards of such railways have become focal areas of research within the industry. However, the current national railway technical standard system is insufficient to fully address the entire process of intercity railway construction and operation in urban agglomerations, particularly within the framework of "four network integration and interconnection". This study focused on the intercity railways in Jiangsu Province's urban agglomerations, with the goal of facilitating their integration into city centers and their operation as public transit systems. Based on their functional positioning and technical characteristics, and through comparisons with the national railway and urban rail transit standard systems, two major subsystems-engineering construction and transportation services-were constructed. Moreover, the system encompassed several key business areas, including foundation, surveying, design, construction, inspection, operation, management, and services. A standard framework, covering various specialized and thematic research areas, was established to guide the design, construction, equipment, inspection, and operational management of intercity railways in urban agglomerations. This framework aims to realize the vision of "unified planning, unified standards, coordinated operation, interconnection, seamless transfers, and one-ticket access." [ABSTRACT FROM AUTHOR]

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Smart Rail Transit is the property of Smart Rail Transit Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

As the population continues to age, there is increasing academic attention to the construction of an elderly-friendly social environment. Guided by active aging, it is crucial to adapt transportation infrastructure to the needs of the elderly and implement corresponding service management measures. Given China's significant elderly population, the urgent need arises to create age-friendly public transportation environments. Currently, several challenges exist, including the exploration of transportation planning for the elderly, traditional planning's lack of responsiveness to diverse travel patterns among the elderly, and the necessity to strengthen governance measures in establishing age-friendly public transportation environments. This study investigates the developmental process, key considerations, and governance strategies of transportation service planning for vulnerable groups in Florida. It explores the characteristics of participatory planning processes, differentiated transportation service strategies, and systematic governance measures, aiming to provide valuable insights into China's efforts in constructing an age-friendly public transportation environment. Taking into account China's national context and the current state of population aging, the study proposes the following three recommendations: Develop transportation service plans that cater to the specific needs of the elderly, with a focus on creating a favorable policy environment. This involves establishing a collaborative, multi-level planning and governance system for vulnerable groups, promoting the integration of "age-friendly" design and "elderly-assistance" services. Fully consider regional and individual differences, tailor construction targets and governance strategies accordingly, and propose refined transformation and governance approaches. Advocate for a governance model that combines "full participation" and "technological empowerment," effectively addressing the needs of the elderly. This includes enhancing the involvement of the elderly in the creation of age-friendly public transportation and achieving a cooperative and shared governance approach to age-friendly transportation. [ABSTRACT FROM AUTHOR]

Based on the fifth and sixth national census data and the seventh national census bulletin of administrative regions at the prefecture level and above, the Gini coefficient, Theil index, spatial autocorrelation analysis and other methods are used to analyze the temporal and spatial evolution characteristics of talent agglomeration in Chinese cities from 2000 to 2020, and the multiscale geographically weighted regression is used to study the spatial heterogeneity and spatial scale of the influencing factors of talent agglomeration. The results show that: ①There is a large gap in the distribution of talents in eastern, central, and western cities in China, forming a distribution pattern of "strong in the east and weak in the central and west" and regional "one super and many strong", and the gap in average talent density tends to narrow. ②The distribution of talents shows great imbalance, with a slight weakening trend of instability. ③On the whole, the density of talents presents a significant positive spatial autocorrelation, and the spatial ag‐ glomeration effect of talents is becoming more and more significant. Locally, the Yangtze River Delta high-high talent agglomeration area and the Pearl River Delta high-high talent agglomeration area are gradually formed; the low-level talent agglomeration area composed of low-low talent agglomeration cities will have a homogeneous impact on its neighboring cities; some provincial capital cities in the west have significant high-low agglomeration characteristics, forming a "center-periphery" talent agglomeration pattern. ④The proportion of tertiary industry in GDP, the proportion of science and education expenditure in total fiscal expenditure, per capita GDP, the number of general higher education institutions, per capita public library collections, and the number of public transportation vehicles per 10 000 people have a significant positive impact on talent agglomeration, and the intensity of the impact decreases in order. Among them, the eco‐ nomic environment factor represented by the tertiary industry's share of GDP and per capita GDP has a relatively small spatial scale and strong spatial heterogeneity. Other independent variables are close to the global scale, and the spatial heterogeneity is not obvious. [ABSTRACT FROM AUTHOR]

With the rapid development of urbanization, the scope of the city is expanding. At present, the design speed of subway is mostly 80 ~ 120 km/ h, which is slightly insufficient for long-distance commuting. In order to better achieve urban integration, higher-speed urban rail transit has emerged and has been put into operation in some cities. In order to grasp the environmental vibration impact of 160 km/ h urban rail rapid transit underground line, this paper carried out a systematic environmental vibration test on the 160 km/ h urban rapid rail transit underground line of a city, including rail, ballast bed and tunnel wall vibration test, as well as ground vibration and indoor secondary structure noise test. The structure shows that when the train speed is 124 to 152 km/ h, the rail vibration is 109. 7 to 111.2 dB, the ballast vibration is 75.6 to 77.4 dB, the tunnel wall vibration is 67.5 to 69.4 dB, and the average speed is 138 km/ h, the tunnel wall vibration is 68.7 dB. After the train vibration is transmitted to the ground, the maximum Z vibration level of the ground vibration is 46.4 to 60.2 dB at the distance of 0 to 40m from the track directly above the tunnel. The ground vibration basically conforms to the attenuation law that decreases with the increase of distance, but the vibration response of the measuring point at 10m from the track is larger than that at 0m. In the case of rubber vibration isolation pad monolithic track bed, the maximum secondary structural noise of the first floor of the building above the tunnel is 32.7 dB(A) and 28.4 dB(A) respectively when the near and far rail trains pass through. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Management & Systems is the property of Business Administration Association of R.O.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The construction of urban rail transit lines, suburban railways, as well as intercity railways is advancing towards networked operation. The interoperability of various rail transport systems has become an unavoidable issue in engineering construction, and the compatibility of signal systems is a basic condition for the interoperability of various rail transport systems. At present, both the CBTC system and the CTCS system occupy a dominant market position in their respective rail transport fields. However, these two train control systems have completely different requirements for civil engineering conditions, resulting in significant differences in such aspects as project scale and functional positioning. This paper discusses the differences between these two train control systems in terms of operational capacity and public transport operation. It also provides a solution in response to the current technical difficulties related to interoperability, which provides a feasible approach for engineering design in the future. [ABSTRACT FROM AUTHOR]

According to the network and public transportation characteristics of the metropolitan area rails, the technical goal of integration of signaling systems is proposed, which is, the integration of existing C2/C2+ATO and CBTC systems and the integration of signaling systems using new interconnection technology. Based on the analysis of differences in technical level, working mechanism and system function between the ground and vehicle equipment of the existing mainstream CTCS and CBTC systems, the interconnection schemes of "ground-to-vehicle compatibility" and "vehicle-to-ground compatibility" are proposed. Combined with the current researches of relevant manufacturers, the new interconnection technology route of suburban railway is analyzed. [ABSTRACT FROM AUTHOR]

As an extension of library, urban reading space in commercial complex has the advantages of easy access, strong affinity, and diverse services. Based on the access theory, this study investigates the access of urban reading spaces in five different commercial complexes under two typical development and management modes in Shanghai, and qualitatively analyzes the influencing factors and improvement strategies for the access of reading spaces. The results show that users prefer reading spaces that are easy to reach, simple in function, and continuously operational. The enterprise-led model should optimize the operational strategy to enhance sustainability. The government-led model should focus on the connection between location selection and public transportation system. Both models could enhance service quality and sustainability by strengthening cross departmental cooperation. [ABSTRACT FROM AUTHOR]

Copyright of Railway Standard Design is the property of Railway Standard Design Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In view of such problems of security check in urban rail transit as insufficient use of IT technologies, mismatch between passenger flow and security check capacity, and high operation costs, this paper analyzes the service requirements of security check in the current situation of the development of smart urban transit. On this basis, it proposes the technical development trend of security check from the aspects of security check information system, AI based intelligent image judgment, centralized image judgment, credit-based security check, ticket check & security check integration. Thus, it provides reference for the development, construction and operation of smart security check systems. [ABSTRACT FROM AUTHOR]

Copyright of Geography & Geographic Information Science is the property of Geography & Geo-Information Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South China University of Technology (Natural Science Edition) is the property of South China University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenzhen University Science & Engineering is the property of Editorial Department of Journal of Shenzhen University Science & Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenzhen University Science & Engineering is the property of Editorial Department of Journal of Shenzhen University Science & Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Standard Design is the property of Railway Standard Design Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Signalling & Communication Engineering is the property of Railway Signalling & Communication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Standard Design is the property of Railway Standard Design Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Smart Rail Transit is the property of Smart Rail Transit Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Geography & Geographic Information Science is the property of Geography & Geo-Information Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Geography & Geographic Information Science is the property of Geography & Geo-Information Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Standard Design is the property of Railway Standard Design Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tourism Tribune / Lvyou Xuekan is the property of Tourism Institute of Beijing Union University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Emerging as an urban development mode that attempts to effectively promote the sustainable feedback between land use and transport, transit oriented development (TOD) emphasizes the land use development surrounding the public transit node. Many cases across the world have showed the success of TOD and TOD has been adopted as a policy tool for China􀆳s territorial spatial governance. It requires a literature review to inform the application and practice of TOD in China. From a dual perspective of theory and methodology, this paper systematically reviewed related studies of TOD from four aspects, namely the TOD conceptualization, the typology, the consequences and the optimization. Based on the review, challenges both in theory and in methodology were summarized and implications for China 􀆳s territorial spatial governance were discussed, in order to provide references for formulating efficient TOD planning and strategies. [ABSTRACT FROM AUTHOR]

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The widely used bus one ticket system lacks off boarding information, and the passenger classification based on the dataset of one-ticket bus system needs to be refined to evaluate the classification effect. This study uses the large-scale bus ticket data with alighting information to compare and analyze the transit rider classification models with and without the alighting information to explore the impact of the missing alighting information on the fine classification of transit riders. The classification indexes and combined clustering method are adopted to refine the classification of bus passengers. A case study of Beijing conventional buses which contain boarding and alighting data of 28 consecutive days is presented and used to analyze the impact of bus alighting data and classification indexes on the transit rider classification results. The result indicates that both models successfully complete the fine classification of the riders and reflect the spatio-temporal characteristics of each type of riders. The model with alighting information is able to identify the distance-concerned type with few samples such as the long-distance transit riders accounting for 0.25%. The standard deviation of the average proportion of categories in the model without alighting information is much smaller than that in the model with alighting information. The results obtained from the model without alighting information are more balanced, and the regularity of various categories of passengers in multiple dimensions is significantly different, which can better reflect the macro characteristics of classification. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In recent years, train-to-train communication has become an emerging technology and especially, an urgent need in the field of urban rail transit. But in the subway, due to the limited space, the electromagnetic wave propagation is seriously affected by the multipath fading, which is directly related to the operation safety of the urban rail transit. To solve this problem, this paper conducts the research on mitigating the multipath fading of direct train-to-train communication under the subway environment. Firstly, the appropriate communication distance and frequency band are selected to adapt to the actual tunnel environment. Secondly, a millimeter-wave communication device structure that uses three-antenna technology to mitigate multipath fading is designed. Then, the combination of Pre/Post-Rake technology and multi-antenna algorithm is proposed to reduce the bit error rate to meet the railway communication standard. Finally, the millimeter-wave path loss model is used to simulate and verify the error characteristics of the improved rake receiver. The simulation results show that the rake receiver can effectively mitigate the influence of multipath fading and improve the reliability and security of urban rail communication. [ABSTRACT FROM AUTHOR]

With the formation of urban rail transit network, the functions of hub nodes are more diversified and it is necessary to determine main functions of different hubs and establish a scientific method for layout. Through analysis on the passenger flow characteristics and service scope of hub connecting high-speed railway, intercity railway, city and urban rail transit, the service ability, connection modes, comprehensive development and other elements are selected as the grading standards to divide hub nodes into different levels and determine the set of alternative nodes. Furthermore, a model is established with the objective of minimizing the construction cost of rail transit hub and passenger travel cost, and then the collaborative layout scheme of comprehensive rail transit hub is obtained. Finally, taking Xi'an metropolitan area as the object, this paper puts forward the layout scheme of comprehensive rail transit hub with 2 levels and 18 nodes. [ABSTRACT FROM AUTHOR]

Based on the engineering background of 4# connecting passage of Nantong Urban Rail Transit Line 1, the multi-field coupling variation law of freezing construction process was studied through monitoring data. A new multiphysical field data monitoring equipment was developed, and its basic characteristics and installation location were introduced. Finally, the monitoring data were analyzed and compared with the simulation results. The results showed that considering the dual influences of salinity and water flow in the saturated silty sand layer, the salinity slowed down the temperature of the soil in the early freezing stage, and the water flow caused the cooling capacity of the upstream Shennan Road Station to flow into the downstream Yongxing Avenue Station, which in turn delayed the actual freezing construction time by 10 days than expected. The above monitoring work ensures the safety of the construction of the connection aisle freezing method and provides reference data for other similar projects. [ABSTRACT FROM AUTHOR]

An operational safety evaluation method of straddle monorail vehicle system was proposed based on cloud model and CRITIC method. According to the structure and function of the straddle monorail vehicle system, the reliability index system of the straddle monorail vehicle was established, and the weight values of the reliability evaluation index were determined by the improved CRITIC method. The cloud model expression of the reliability evaluation index of the straddle monorail vehicle system was obtained by the virtual cloud. The similarity analysis between the new cloud of the comprehensive reliability index of the straddle monorail vehicle system and the cloud model of the reliability evaluation set was conducted to judge the operation status of the comprehensive cloud model of the straddle monorail vehicle system. The results show that the bogie index, air brake index, train network index, auxiliary system index and the integrated cloud model of the vehicle system are all in the ″main function″ state, which is in good agreement with the actual operation state of Chongqing rail lines. The system reliability evaluation method based on the cloud model and the improved CRITIC method can accurately evaluate the daily operation status of the straddle monorail system in Chongqing. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Signalling & Communication Engineering is the property of Railway Signalling & Communication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Railway Signalling & Communication Engineering is the property of Railway Signalling & Communication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to solve the problems of energy saving and punctuality of single train operation in urban rail transit, train operation strategy improvement and operation curve optimization are combined. The control strategy of train operation is analyzed in view of the change of additional resistance of train in the actual line. A multi-objective optimization model is established by taking the train running time and energy consumption as the optimization objectives. On the basis of Pareto principle, a multi-objective particle swarm optimization algorithm based on adaptive grid (AGA-MOPSO) is adopted. At the same time, the inertia weight is processed by linear differential decreasing method, and then the train condition transition point is optimized. The Pareto solution set is screened by fuzzy membership function. Simulation results show that AGA-MOPSO has obvious advantages in diversity, stability and optimization effect compared with conventional particle swarm optimization (PSO). In addition, the comparison of three different control strategies shows that better control strategy optimization effect is achieved by adding multiple idle conditions to the actual complete line. [ABSTRACT FROM AUTHOR]

In order to study the riding comfort of the passengers on the urban rail transit train, a coupling vibration model for the passenger-train-bridge system is proposed and corresponding calculation programs are prepared. Taking a steel-concrete composite girder bridge on Beijing Metro Line 5 as an example, the dynamic responses of passengers and trains are simulated, and the differences of the dynamic responses between passengers and trains are analyzed. The dynamic response of passengers when the train running on the bridge line and the ordinary subgrade line is calculated respectively, and the influence of bridge vibration on passenger vibration is analyzed. By setting different working conditions, the variation of passengers' vibration is analyzed. Taking the dynamic response of passengers as the evaluation index, the riding comfort of passengers is evaluated by ISO - 2631 standard. The results show that the bridge's vibration will definitely increase the passenger's dynamic response, passengers in the middle carriages of the train have better riding comfort feeling than those in the head and tail ones; while in the same carriage, passengers on the middle seats feel better than those on both end seats; and with the increase of the train speed, the riding comfort of passengers will gradually reduce. [ABSTRACT FROM AUTHOR]

In order to overcome the shortcomings of the steel spring floating slab track structure in the urban rail transit with short sleepers in the steel spring floating slab structure due to its poor maintenance accuracy, large adjustment workload, difficulty in assembling the rail row, and slow construction progress, the optimized double-block sleepers ballastless track technology is introduced into the steel spring floating slab structure to form a new double-block sleepers floating slab structure with high precision of the double-block sleepers ballastless track and high vibration damping effect of steel spring floating slab. The static characteristics under the four conditions of lifting, stacking, hoisting and construction are analyzed and studied by a finite element model established, optimal structural design parameters are determined, the overall and local reinforcement design of the structure is carried out according to the limit state design method of partial reinforcement design, and the test section is prepared and dynamic performance test is conducted. The results show that the new double-block sleeper can effectively reduce the cracks of the ballast bed on account of its better rail bottom slope accuracy and smoothness, simple construction and fast speed; within the speed range of 80~120 km/h, the maximum derailment coefficient is 0. 52, and the maximum wheel load reduction rate is 0. 28, which are all less than the specified limits, and the vibration reduction effect reaches 14 dB; and it has good driving safety indicators and vibration reduction performance. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Engineering Management / Gongcheng Guanli Xuebao is the property of Journal of Engineering Management Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)