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The ultimate bearing capacity of prestressed anchorage structure is directly related to the interfacial shear stress distribution characteristics of the inner anchorage section. Firstly, the axial stress distribution characteristics of the inner anchorage section for the geotechnical prestressed anchorage structure under tensile load are further studied by indoor similarity model test, and the corresponding fitting formula is established. Based on this result and the force equilibrium conditions of rod body’s micro-segment, the rod body interfacial shear stress distribution characteristics formula is also derived, which fits well with the results of the indoor model test. The research achievements have important significance for the further study on stress distribution characteristics of the inner anchorage section.

During the process of running, running clothing fabrics are in constantly stretching, rubbing and humid environment. However, the previous investigations of the fabric are usually a single performance or the combination of two performance researches. Therefore, this article will consider the athletes body muscles stretch rate, the athlete body sweat and material degree of friction. It was discussed that the stretch and recovery properties of six running fabrics having been tested and evaluated with orthogonal analysis and variance analysis. At last, fabrics in different parts of the body choose according to the optimal use of them. The result will do good to use these fabrics in running clothing development. It will give some references to the development of functional sports products in the future.

The hydration heat of polymer modified mortar were measured at 5°C、10°C、20°C and 40°C using Multi-channel Isothermal calorimeter. The effects of temperature on hydration heat of polymer modified mortars with 0.1% methyl hydroxylpropyl cellulose (MHPC), 3% ethylene vinyl acetate (EVA) and 0.1%MHPC+3%EVA were investigated. The curves of hydration heat show that the polymer reduces the hydration heat of mortars and it is related to the temperature. The effects will be more and more remarkable with the increasing of temperature; Temperature also affects the exothermic rate peak of polymer modified mortars. The exothermic rate peak of polymer modified mortar at low temperature is almost equal to that of the ordinary cement mortar. However, it is obviously lower than that of ordinary cement mortar at high temperature ; The time to the exothermic rate peak of polymer modified mortar is also related to the temperature.

One of the main failure forms of inner bond section for prestressed anchorage structure is the failure of interface between the rock mass and the grouting body, so this interface is usually one of the weak link of the whole anchorage system, and so it is important to analyze the failure developing law of the interface. Based on the finite difference program FLAC3D, the numerical analysis model of inner bond section for prestressed anchorage bolt was built, and the failure developing laws of inner bond section under step loading were studied from three aspects: displacement change, shear stress change and yield point position change. The influence of the change of inner bond section length and the grouting body strength on the inner bond section failure developing law was also analyzed. At last, compared with the results of indoor static load test, the reliability of the numerical simulation was certified.

The data exchange platform aims to provide an integrated, standardized and standard-complying data exchange framework for the business systems inside and outside the enterprises and solve the “information island” problem caused by differences among the application system, database, data definition and running environment. This paper designs a cross-platform, cross-system, secure and reliable data exchange platform, proposes a method for data conversion standard and implementation of isomerous data transform method and function of the integration and conversion of the isomerous data in enterprises and implements a prototype system. This data conversion technology features high efficiency, standardization, high security, openness and scalability.

The total chloride concentrations of concrete with 0.51 of water to cementitous from three contents of Fly ash, GGBS, two kinds of corrosion solution for one dimensional diffusion at different diffusion depth and time were measured by chemical titration. The influence of Fly ash and GGBS content on total chloride concentration and the surface chloride concentration were analyzed. The expressions of the surface chloride concentration were discussed in terms of the experimental results related with content of Fly ash, GGBS and solution. The numerical analysis results indicated that the expression of the surface chloride concentration has a significant impact on the long-term service life of concrete in chloride environments.

Jianshe bridge is the first self-anchored cable-stayed suspension bridge in the world, localed in Dalian, China. Cable-stayed suspension was presented in history, however cable-stayed bridge and self-anchored suspension combine to make a new type system, which is economy and fit for large span bridge. This paper presents the design of Jianshe bridge. The static and dynamic character of the system and the fatigue of suspender are presented. The computing model of this new system is also introduced in the paper. The structure internal force nonlinearity and stress of the bridge are analyzed. Then analyse the calculate results and draw the conclusions, which self-anchored cable-stayed suspension bridge is fit for large-span bridge, cross suspender can reduce stress amplitude and overcome fatigue problem, and Wind-resistant stability of self-anchored cable-stayed suspension bridge is better than earth anchored system.

Based on the theory of particle flow code, the micro-numerical analysis model is established to study the anchorage performance of geotechnical prestressed anchorage structures. According to the numerical model tests, the development regularity of stress and displacement of surrounding soil around bar body under the effect of uplift loading is analyzed, and the interaction characters between anchor bolt and surrounding soil are also deeply studied. Conclusions can be drawn as follows: with the function of tensile load, two area of stress concentration form within the interior bond section of prestressed anchorage structure, and the soil porosity also changes accordingly. The interface shear stress peak point shift inward gradually with the increase of time-stepping, furthmore, the peak stress also enlarges gradually. According to the deformation mode, the surrounding soil can be divided into three zones. The radial displacement of soil between anchors is weakened because of the effects of group anchors, but the axial displacement is strengthened, which nominally is similar to the “single anchor character”. The research findings have a certain reference value for the study of anchorage mechanism.

The effect of prestressed degree on seismic performance of prestressed concrete pier is studied. The plastic hinge properties is gotten by means of reinforce bilinear model and concrete Kent—R.Park model. The different plastic hinge hysteresisloops are obtained by setting prestressing tendons and changing prestressed degree. The result indicates that prestressed concrete pier can bear more great ultimate bending moment and more large dissipation energy ability than common concrete pier. Within the ultimate compressive strength, with the increase of prestressed degree, its relative ultimate bending moment of the prestressed concrete pier rises, and dissipation energy ability rises.

Directional solidification experiments on Pb-Bi peritectic alloys have been conducted at very low velocity (V=0.5 μm/s) and high thermal gradient (G=25 K/mm). Incomplete banded and oscillatory structures have been observed in both of hypoperitectic and hyperperitectic compositions over several millimeters of growth. These structures resulted from the repeated nucleation and competition between properitectic α- and peritectic β-phases. The banded or oscillatory structures are found to be transient and the final steady-state phase was only the peritectic β-phases. With an increase in composition, β phase formed and α phase disappeared at a lower solidified distance. Composition variations in the banded structure are measured to determine the solute distribution along the growth direction.