21 results
Search Results
2. An evolutionary optimization method to determine optimum degree of activity accelerating and overlapping in schedule compression.
- Author
-
Hazini, Kamran, Dehghan, Reza, and Ruwanpura, Janaka
- Subjects
CONSTRUCTION project management ,COST effectiveness ,GENETIC algorithms ,CIVIL engineering ,TIME management ,SCHEDULING - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2014
- Full Text
- View/download PDF
3. A heuristic method to determine optimum degree of activity accelerating and overlapping in schedule compression.
- Author
-
Hazini, Kamran, Dehghan, Reza, and Ruwanpura, Janaka
- Subjects
HEURISTIC ,CIVIL engineering ,MATHEMATICAL models ,SCHEDULING ,OPERATIONS research ,CONSTRUCTION project management ,METHODOLOGY - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2013
- Full Text
- View/download PDF
4. A simplified method for seismic analysis of rooftop telecommunication towers.
- Author
-
Assi, Rola and McClure, Ghyslaine
- Subjects
TELECOMMUNICATION ,TELECOMMUNICATION equipment ,TOWERS ,BUILDINGS ,ROOFTOP construction ,TECHNOLOGY - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2007
- Full Text
- View/download PDF
5. A comparison of two regional seismic damage estimation methodologies.
- Author
-
Onur, Tuna, Ventura, Carlos E., and Finn, W. D. Liam
- Subjects
EARTHQUAKE damage ,EARTHQUAKE intensity ,ESTIMATION theory ,EARTHQUAKE engineering - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2006
- Full Text
- View/download PDF
6. Dynamic performance of the Confederation Bridge due to traffic and wind.
- Author
-
Naumoski, Nove, Cheung, Moe S., and Foo, Simon
- Subjects
BRIDGES ,STRAINS & stresses (Mechanics) ,ACCELERATION (Mechanics) ,VIBRATION (Mechanics) - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2004
- Full Text
- View/download PDF
7. Traffic and speed characteristics on two-lane highways: field study.
- Author
-
Hassan, Yasser
- Subjects
AUTOMOBILE speed ,TRAFFIC flow ,ROAD construction ,HIGHWAY engineering ,ACCELERATION (Mechanics) - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2003
- Full Text
- View/download PDF
8. Direct generation of floor design spectra (FDS) from uniform hazard spectra (UHS) — Part II: extension and application of the method
- Author
-
Ghyslaine McClure and Amin Asgarian
- Subjects
Hazard (logic) ,021110 strategic, defence & security studies ,Earthquake engineering ,business.industry ,0211 other engineering and technologies ,020101 civil engineering ,02 engineering and technology ,Structural engineering ,Extension (predicate logic) ,Spectral line ,0201 civil engineering ,Acceleration ,business ,Geology ,General Environmental Science ,Civil and Structural Engineering - Abstract
This paper extends the methodology presented in the companion paper to study the effects of non-structural components’ (NSCs) damping ratio and their location in the building on the pseudo-acceleration floor response spectra (PA-FRS) of reinforced concrete buildings, and propose equations to derive floor acceleration design spectra (FDS) directly from the uniform hazard design spectra (UHS) for Montréal, Canada. The buildings used in the study are 27 existing reinforced concrete structures with braced frames and shear walls as their lateral load resisting systems: 12 are low-rise (up to 3 stories above ground), 10 are medium-rise (4 to 7 stories), and 5 are high-rise (10 to 18 stories). Based on statistical and regression analysis of floor acceleration spectra generated from linear dynamic analysis of coupled building–NSC systems, two sets of modification factors are proposed to account for floor elevation and NSC damping, applicable to the experimentally-derived FDS for roof level and 5% NSC damping. Modification factor equations could be derived only for the low-rise and medium-rise building categories, as insufficient correlation in trends could be obtained for high-rises given their low number. The approach is illustrated in detail for two typical buildings of the database, one low-rise (Building #4) and one medium-rise (Building #18), where the proposed FDS/UHS results show agreement with those obtained from detailed dynamic analysis. The work is presented in the context of a more general methodology to show its potential general applicability to other building types and locations.
- Published
- 2020
9. Simple iteration method for structural static reanalysis.
- Author
-
Haifeng Liu, Baisheng Wu, and Zhengguang Li
- Subjects
STRUCTURAL analysis (Engineering) ,ITERATIVE methods (Mathematics) ,STATICS ,RELAXATION phenomena ,ACCELERATION (Mechanics) ,FINITE element method ,COMPUTER simulation ,CIVIL engineering - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing 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.)
- Published
- 2009
- Full Text
- View/download PDF
10. Shake table testing of bookcase – partition wall systems
- Author
-
Steven Kuan, Andre Filiatrault, and Robert Tremblay
- Subjects
Acceleration ,Engineering ,business.industry ,Earthquake shaking table ,Structural engineering ,business ,Partition (database) ,General Environmental Science ,Civil and Structural Engineering - Abstract
This paper describes the seismic (shake table) tests conducted on bookcase – partition wall systems. These nonstructural building components can be considered acceleration sensitive (or motion sensitive) rather than drift sensitive. The shake table floor motions used for the seismic testing are described in a companion paper. One bookcase fully loaded with books and two different cantilevered partition wall systems were considered in the shake table tests. Nine different configurations of these free-standing nonstructural building components were tested. For each configuration, three different seismic hazard levels were considered for the motions at the second floor level of a six-storey building designed for two different densely populated Canadian cities (Montréal and Vancouver). A total of 485 shake table tests were conducted in this experimental investigation. The experimental results indicated that pounding between unanchored bookcases and partition walls is very beneficial to the dynamic response of the bookcases, as it prevents resonance from occurring. Also, the seismic performance of bookcases improved dramatically by the proper installation of seismic restraint systems. Experimental fragility curves for overturning of tall bookcases are presented.Key words: bookcases, earthquakes, fragility, interior partition walls, nonstructural, operational and functional components, pounding, seismic restraints, shake table.
- Published
- 2004
11. Modeling vehicle acceleration deceleration behavior during merge maneuvers
- Author
-
Randy B Machemehl and Cheng Chen Kou
- Subjects
Engineering ,business.industry ,Relative velocity ,Image processing ,Time gap ,Nonlinear system ,Acceleration ,Nonlinear model ,Physics::Accelerator Physics ,Vehicle acceleration ,business ,Merge (version control) ,Simulation ,General Environmental Science ,Civil and Structural Engineering - Abstract
Freeway merge maneuvers are complex and may involve a lane change, continuous acceleration, possible deceleration, and finally a gap acceptance. This paper presents a methodology to model ramp vehicle acceleration-deceleration behavior at freeway entrance ramps. Primary data capturing a wide range of information were collected using video tape methods and manually reduced through image processing techniques. Ramp vehicle merging position in conjunction with freeway and ramp flow levels was analyzed for both parallel and taper type entrance ramps. Where vehicle trajectory data were available, merging positions with respect to ramp vehicle speed as well as relative speed and time gap between a ramp vehicle and freeway vehicles were examined. Results show that the merge position has a statistically insignificant effect upon individual traffic parameters. Methodology presented in this paper used the stimulus-response equation as a fundamental rule to model ramp vehicle acceleration=deceleration behavior. The timebase car-following model was modified to a nonlinear distance-base stimulus-response equation to capture the characteristics of the collected traffic data. Calibration of the proposed nonlinear model from a pilot study demonstrated satisfactory results and indicated that a time lag before ramp drivers respond to stimuli does exist. Effects of surrounding freeway vehicles on ramp vehicle acceleration-deceleration behavior were found to be significant. (A)
- Published
- 1997
12. Seismic response of instrumented structures during the 1994 Northridge, California, earthquake
- Author
-
Carlos E. Ventura, Norman D. Schuster, and W. D. Liam Finn
- Subjects
Acceleration ,Earthquake engineering ,Instrumentation (computer programming) ,Reinforced concrete ,Seismology ,Geology ,General Environmental Science ,Civil and Structural Engineering ,Seismic analysis - Abstract
This paper presents an overview of strong motion records obtained from instrumented structures during the 1994 Northridge earthquake. It describes the behaviour of buildings, bridges, and dams that have been instrumented by the major strong motion instrumentation networks operating in California and highlights important features of the most significant structural motions recorded during the earthquake. The structural damage observed during a reconnaissance visit to the affected areas by the earthquake is correlated with preliminary analyses of the recorded motions. Detailed discussions of the dynamic behaviour of two instrumented reinforced concrete buildings that suffered damage during the earthquake are presented. The behaviour of these buildings during previous earthquakes is also examined. This paper and the companion paper on ground motions provide comprehensive information about instrumental records obtained in the region affected by the earthquake. Key words: earthquake engineering, structural response, strong motion instrumentation, damage evaluation, buildings, bridges, dams, structural dynamics, acceleration, amplification.
- Published
- 1995
13. Acceleration amplification due to rotational components of near-fault earthquakes in triple concave friction pendulum base-isolated structures
- Author
-
Faramarz Khoshnoudian and Hamed Tajammolian
- Subjects
Physics ,Ground motion ,021110 strategic, defence & security studies ,0211 other engineering and technologies ,Base (geometry) ,Pendulum ,020101 civil engineering ,Geometry ,02 engineering and technology ,Near fault ,Aspect ratio (image) ,0201 civil engineering ,Deck ,Nonlinear system ,Acceleration ,General Environmental Science ,Civil and Structural Engineering - Abstract
Recent studies show that rotational components of earthquakes can amplify the floor acceleration in a base-isolated structure. As a result, the seismic force of nonstructural components could be significantly increased. In this paper, a simple rectangular deck with various geometrical properties mounted on triple concave friction pendulum (TCFP) bearings is examined. At first a set of three translational components from 25 near-fault ground motion records are considered. Then, three rotational components, i.e., torsional and two rocking motions are computed for each earthquake. The results of nonlinear dynamic analysis in a rectangular structure with an aspect ratio in plan equal to 3, demonstrate that the acceleration approximately intensifies 3.4 times in presence of all six ground motion components compared to three translational ones. Finally, a new formula is proposed to determine the maximum acceleration of base-isolated structure without performing the dynamic analysis due to rotational components of ground motions.
- Published
- 2018
14. Serviceability design factors for wind-sensitive structures.
- Author
-
Pozos-Estrada, A., Hong, H. P., and Galsworthy, J. K.
- Subjects
BUILDINGS ,SENSITIVITY analysis ,STANDARD deviations ,STRUCTURAL dynamics ,FREQUENCIES of oscillating systems ,DAMPING (Mechanics) ,WINDS ,ACCELERATION (Mechanics) - Abstract
Wind-sensitive buildings can experience excessive vibrations that cause discomfort and interruption of the activities of the inhabitants of the buildings. To ensure the desired serviceability, codes, standards, and their commentaries have proposed perception curves that limit the expected (or mean) peak acceleration or standard deviation of the acceleration of the buildings. These perception curves are developed based on perceived vibration alone and do not consider the uncertainty in structural dynamic characteristics (i.e., natural frequency of vibration and ratio of damping) and loads such as the wind loading. Therefore, the annual probability that the perception curve is not exceeded for a building whose design is based on the perception curve is unknown. In this study, serviceability design factors are calibrated for selected targeted annual probability of perception levels by considering the uncertainty in the structural dynamic characteristics, wind characteristics, as well as in the human perception of motion. These serviceability design factors are to be used with the estimated mean peak acceleration caused by along-wind and cross-wind excitations given in the commentaries of the current National building code of Canada. The use of calibrated serviceability design factors for design checking is illustrated with a numerical example. Les immeubles sensibles au vent peuvent connaître des vibrations excessives causant un inconfort et l’interruption des activités des usagers des immeubles. Afin d’en assurer la fonctionnalité, les codes, les normes et leurs commentaires présentent des courbes de perception qui limitent l’accélération crête (ou moyenne) prévue et l’écart type de l’accélération des immeubles. Ces courbes de perception sont développées en se basant sur la vibration perçue uniquement et ne tiennent pas compte de l’incertitude des caractéristiques dynamiques structurales (p.ex. fréquence naturelle de la vibration et le rapport d’amortissement) et des charges telles que la charge due au vent. La probabilité annuelle que la courbe de perception ne soit pas dépassée pour un immeuble conçu selon la courbe de perception est donc inconnue. Dans la présente étude, les facteurs de conception de fonctionnalité sont étalonnés selon une probabilité annuelle cible choisie de niveaux de perception en tenant compte de l’incertitude des caractéristiques dynamiques structurales, des caractéristiques du vent ainsi que de la perception humaine du mouvement. Ces facteurs de conception en fonctionnalité doivent être utilisés avec l’accélération crête moyenne estimée causée par le vent parallèle et latéral contenue dans les commentaires au Code national du bâtiment du Canada en vigueur. L’utilisation de facteurs étalonnés de conception en fonctionnalité pour vérifier la conception est illustrée au moyen d’un exemple numérique. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
15. Dynamic characteristics of the Confederation Bridge.
- Author
-
Naumoski, Nove, Cheung, Moe S, and Foo, Simon
- Subjects
CONFEDERATION Bridge (N.B. & P.E.I.) ,BRIDGES ,TRANSPORTATION - Abstract
Dynamic characteristics of the Confederation Bridge were determined from recorded accelerograms of vibrations due to traffic and wind. Natural frequencies of four vertical and five transverse modes of the bridge were identified from the Fourier amplitude spectra of the accelerograms. By appropriate filtering and processing of the accelerograms, displacement time histories of vibrations associated with each of these modes were computed, which were used to determine the mode shapes of the bridge. These characteristics are essential for investigations of the dynamic performance of the bridge. The computed natural frequencies are significantly larger than those of the finite element model used in the design of the bridge. Since the dynamic effects due to traffic, wind, and seismic loads depend on the natural frequencies of the bridge, an evaluation study of these effects is needed using the natural frequencies and mode shapes obtained from measured vibrations.Key words: bridge, acceleration, displacement, record, vibration, filtering, frequency, mode, Fourier spectrum.Les caractéristiques dynamiques du pont de la Confédération ont été déterminées à partir d'enregistrements d'accélérations causées par les vibrations dues à la circulation et au vent. Les fréquences fondamentales de quatre modes verticaux et de cinq modes latéraux du pont ont été identifiées à partir de l'amplitude des spectres de Fourier des accélérations enregistrées. Avec un filtrage et un traitement appropriés des accélérations enregistrées, les historiques de temps des déplacements des vibrations associés à chaque mode ont été calculés, lesquels ont été utilisés afin de déterminer les modes propres du pont. Ces caractéristiques sont essentielles afin d'investiguer les performances dynamiques du pont. Les fréquences fondamentales calculées sont significativement plus grandes que celles du modèle d'éléments finis utilisé pour la conception du pont. Puisque les effets dynamiques causés par la circulation, le vent et les charges sismiques dépendent des fréquences fondamentales du pont, une évaluation de ces effets, utilisant les fréquences fondamentales et les modes propres obtenus à partir de vibrations mesurées, est requise.Mots clés : pont, accélération, déplacement, enregistrement, vibration, filtrage, fréquence, mode, spectre de Fourier.[Traduit par la Rédaction] [ABSTRACT FROM AUTHOR]
- Published
- 2002
- Full Text
- View/download PDF
16. Influence of pre-existing vibrations on the dynamic response of medium span bridges
- Author
-
Eugene J. O'Brien, Arturo González, and Paraic Rattigan
- Subjects
Rest (physics) ,Loads (Mechanics) ,Engineering ,business.industry ,Dynamic ,Bridges--Live loads ,Free vibration ,Structural engineering ,Traffic flow ,Span (engineering) ,Bridge (nautical) ,Displacement (vector) ,Vibration ,Acceleration ,Traffic load ,Bridge ,Traffic loading ,Bridges--Vibration ,business ,General Environmental Science ,Civil and Structural Engineering - Abstract
Critical static bridge loading scenarios are often expressed in terms of the number of vehicles that are present on the bridge at the time of occurrence of maximum lifetime load effect. For example, 1-truck, 2-truck, 3-truck or 4-truck events usually govern the critical static loading cases in short and medium span bridges. However, the dynamic increment of load effect associated with these maximum static events may be assessed inaccurately if it is calculated in isolation of the rest of the traffic flow. In other words, a heavy vehicle preceding a critical loading case causes the bridge initial conditions of displacement and acceleration to be non zero when the critical combination of traffic arrives on the bridge. Failure to consider these pre-existing vibrations will result in inaccurate estimation of dynamic amplification. This paper explores these dynamic effects and, using statistical analyses outlines the relative importance of pre-existing vibrations in the assessment of total traffic load effects. Irish Research Council for Science, Engineering and Technology Other funder IRCSET The European 6th Framework Project ARCHES (Assessment and Rehabilitation of Central European Highway Structures) ti, ke - AS 04/11/2010
- Published
- 2009
17. Generation of floor accelerations for seismic testing of operational and functional building components
- Author
-
Robert Tremblay, Andre Filiatrault, and Steven Kuan
- Subjects
Acceleration ,Engineering ,business.industry ,Earthquake shaking table ,Structural engineering ,business ,General Environmental Science ,Civil and Structural Engineering - Abstract
The main objective of this paper is to establish floor accelerations to be used for shake table testing of operational and functional components that are sensitive mainly to horizontal accelerations. For this purpose, two different ensembles of floor accelerations were generated from nonlinear time–history dynamic analyses of three- and six-storey building models incorporating ductile reinforced concrete cantilevered walls. The first ensemble was generated based on synthetic ground motions representative of the intraplate regions of eastern Canada, and the second ensemble was generated from synthetic ground motions representative of the crustal and subcrustal earthquakes of western Canada. The ground motions were selected based on the deaggregations of the seismic hazard for each region in terms of most likely magnitude – epicentral distance scenarios. The building models were designed in accordance with the current seismic provisions of the National Building Code of Canada applicable for each region. Application of the resulting floor accelerations in shake table testing of free-standing bookcases and interior partition walls is reported in a companion paper.Key words: floor accelerations, ground motions, nonlinear dynamic analyses, nonstructural, operational and functional components.
- Published
- 2004
18. Comparison of MOBILE5a, MOBILE6, VT-MICRO, and CMEM models for estimating hot-stabilized light-duty gasoline vehicle emissions
- Author
-
Antonio A. Trani, Kyoungho Ahn, and Hesham A. Rakha
- Subjects
Virginia tech ,Engineering ,business.industry ,Light duty ,Oak Ridge National Laboratory ,Atmospheric sciences ,Acceleration ,Fuel efficiency ,Gasoline ,business ,Simulation ,NOx ,General Environmental Science ,Civil and Structural Engineering ,High acceleration - Abstract
The paper compares the MOBILE5a, MOBILE6, Virginia Tech microscopic energy and emission model (VT-Micro), and comprehensive modal emissions model (CMEM) models for estimating hot-stabilized, light-duty vehicle emissions. Specifically, Oak Ridge National Laboratory (ORNL) and Environmental Protection Agency (EPA) laboratory fuel consumption and emission databases are used for model comparisons. The comparisons demonstrate that CMEM exhibits some abnormal behaviors when compared with the ORNL data, EPA data, and the VT-Micro model estimates. Specifically, carbon monoxide (CO) emissions exhibit abrupt changes at low speeds and high acceleration levels and constant emissions at negative acceleration levels. Furthermore, oxides of nitrogen (NOx) emissions exhibit abrupt drops at high engine loads. In addition, the study demonstrates that MOBILE5a emission estimates compare poorly with EPA field data, while MOBILE6 model estimates show consistency with EPA field data and VT-Micro model estimates over various driving cycles. The VT-Micro model appears to be accurate in estimating hot-stabilized, light-duty, normal vehicle tailpipe emissions. Specifically, the emission estimates of the VT-Micro and MOBILE6 models are consistent in trends with laboratory measurements. Furthermore, the VT-Micro and MOBILE6 models accurately capture emission increases for aggressive acceleration drive cycles in comparison with other drive cycles.Key words: transportation energy, transportation environmental impacts, VT-Micro Model, CMEM, MOBILE5, MOBILE6, fuel consumption models, emission models.
- Published
- 2003
19. Analyse dynamique de l'interaction pont-véhicules pour les ponts routiers. I. Aspects numériques
- Author
-
Kamel Henchi, Martin Talbot, and Mario Fafard
- Subjects
Engineering ,Iterative and incremental development ,business.industry ,Shell (structure) ,Structural engineering ,Translation (geometry) ,Bridge (interpersonal) ,Finite element method ,Acceleration ,Modal ,business ,Algorithm ,Beam (structure) ,General Environmental Science ,Civil and Structural Engineering - Abstract
In this paper, a general and efficient procedure for the dynamic analysis of road bridges is presented, that takes into account bridge-vehicle interaction and the road profile in a realistic way. With this approach, the bridge structure can be modeled with a tridimensional finite element method using shell and beam elements. The vehicle model is represented using a discrete method based on Lagrange equations. This method uses the modal superposition technique for the bridge components, with a correction for the displacement based on the method of modal acceleration. The Newmark- beta method is used to solve the movement equations of each bridge and vehicles system and the solution is obtained through an iterative process of the interactive forces between the bridge and the vehicles. A simple academic example is presented to show the validity of the proposed algorithm.Key words: shell, dynamics, finite elements, interaction, bridge, roughness, vehicle.[Journal translation]
- Published
- 1998
20. Reply: Evaluation of the seismic response factor introduced in the 1985 edition of the National Building Code of Canada
- Author
-
A. C. Heidebrecht and Chee Yuen Lu
- Subjects
Response factor ,Acceleration ,National Building Code of Canada ,Frame (networking) ,Seismic loading ,Code (cryptography) ,Incremental Dynamic Analysis ,Geology ,Seismology ,Motion (physics) ,General Environmental Science ,Civil and Structural Engineering - Abstract
The seismic loading provisions included in the 1985 edition of the National Building Code of Canada simulate the dynamic response of structures using a seismic response factor, which has three branches depending upon the relationship between the velocity-related seismic zone Zv and the acceleration-related zone Za. This paper utilizes three ensembles of actual seismic strong motion records to evaluate the seismic response factor; each ensemble has acceleration/velocity ratios corresponding to one of the three branches of the seismic response factor. These strong motion time histories are used as input to relatively simple elastic models of frame and wall structures in order to obtain dynamic seismic response factors. The comparison of these dynamic factors with those specified in the NBCC 1985 indicates that the code factors are generally quite satisfactory, with the exception of the case of frame structures with low fundamental periods located such that Za is two zones higher than Zv. The paper reference...
- Published
- 1989
21. A computer program for the evaluation of wind-induced forces and vibrations of buildings
- Author
-
M. H. Tan and Ted Stathopoulos
- Subjects
Engineering ,Computer program ,business.industry ,Structural engineering ,Wind engineering ,Displacement (vector) ,Acceleration ,Software ,Microcomputer ,National Building Code of Canada ,business ,Simulation ,General Environmental Science ,Civil and Structural Engineering ,Parametric statistics - Abstract
The paper presents a microcomputer program designed for the evaluation of wind-induced forces, displacements, and accelerations of rectangular buildings in accordance with the stipulations and the methodology of the National Building Code of Canada. Meteorological data for Canadian cities have been included in a database file, so it is sufficient to provide information about the geometric, dynamic, and exposure characteristics of the building along with the name of the city of its location for a complete analysis by using either the detailed procedure or both the simple and detailed procedures. The program has been used in a parametric study to provide data of maximum displacements and accelerations of buildings. These data have been organized in charts useful to the professional engineer for preliminary design purposes. Key words: acceleration, building, code, design, displacement, pressure, wind, vibration.
- Published
- 1989
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.