Accidental Eccentricity of Story Shear for Low-Rise Office Buildings
Publication: Journal of Structural Engineering
Volume 137, Issue 4
Abstract
This paper presents the results of a Monte Carlo simulation study on accidental eccentricity of low-rise office buildings. The study incorporates results of a live-load survey in several office buildings in Mexico City. Probability density functions (PDF) for both intensity and position of live load are initially obtained from this survey. These PDFs are used in the simulation procedure. Additionally, the position and intensity of dead load as well as the stiffness of lateral resisting elements are assumed to be random. Stiffness among columns is assumed to be uncorrelated. Five- and 10-story building models with square and rectangular plans are used. For each case, three types of slabs are included in order to account for different live-load to dead-load ratios. This study shows the effect of the following variables on the estimation of accidental eccentricities: vertical location of the story in the building, dead-load to live-load ratio, number of columns in a story, and the direction of analysis in rectangular plans.
Get full access to this article
View all available purchase options and get full access to this article.
References
ASCE. (2005). “Minimum design loads for buildings and other structures.” ASCE-7-05, Reston, VA.
Associate Committee on the National Building Code (ACNBC). (2005). National Building Code of Canada (NBCC), National Research Council of Canada, Ottawa.
Building Seismic Safety Council (BSSC). (2003). NERPH recommended provisions for seismic regulations for new buildings and other structures, FEMA 450, Washington, DC.
Chalk, P. L., and Corotis, R. B. (1980). “Probability model for design live loads.” J. Struct. Div., 106(ST10), 2017–2033.
Cheng, R. C. H., and Feast, G. M. (1979). “Some simple gamma variate generators.” Appl. Statist., 28(3), 290–295.
De-la-Colina, J., and Almeida, C. (2004). “Probabilistic study on accidental torsion of low-rise buildings.” Earthquake Spectra, 20(1), 25–41.
De la Llera, J. C., and Chopra, A. K. (1994). “Accidental and natural torsion in earthquake response and design of buildings.” Rep. No. UCB/EERC-94/07, Univ. of California at Berkeley, Berkeley, CA.
Departamento del Distrito Federal (DDF). (2004). Mexico City Building Code: Complementary technical norms for earthquake-resistant design (RCDF), Mexico, D. F.
Escobar, J. A. (1996). “Seismic torsion in nonlinear nominally symmetric structures due to random properties.” 11th World Conf. on Earthquake Engrg., Paper No. 1403, Elsevier, Maryland Heights, MO.
FEMA and ASCE. (2000). “Prestandard and commentary for the seismic rehabilitation of buildings.” FEMA 356, Washington, DC and Reston, VA.
Hong, H., Escobar, J. A., and Gomez, R. (1998). “Probabilistic assessment of the inelastic seismic response of structural asymmetric models.” Proc., 11th Conf. on European Earthquake Engineering, Balkema, Rotterdam, the Netherlands.
International Code Council (ICC). (2006). International Building Code (IBC), Washington, DC.
Law, A. M., and Kelton, W. D. (2000). Simulation modeling and analysis, 3rd Ed., McGraw-Hill, New York.
Marsaglia, G., and Bray, T. A. (1964). “A convenient method for generating normal variables.” SIAM Rev., 6(3), 260–264.
Melchers, R. E. (1999). Structural reliability: Analysis and prediction, Wiley, Chichester, W. Sussex, UK.
Peir, J., and Cornell, C. A. (1973). “Spatial and temporal variability of live loads.” J. Struct. Div., 99(ST5), 903–922.
Ramsay, R., Mirza, S., and MacGregor, J. (1979). “Monte Carlo study of short time deflections of reinforced concrete beams.” ACI Mater. J., 76(8), 897–918.
Rosenblueth, E. (1976). “Towards optimum design through building codes.” J. Struct. Div., 102(ST3), 591–607.
Ruiz, S. E., and Soriano, A. (1997). “Design live loads for office buildings in Mexico and the United States.” J. Struct. Eng., 123(6), 816–822.
Tso, W. K. (1990). “Static eccentricity concept for torsional moment evaluation.” J. Struct. Eng., 116(5), 1199–1212.
Villa, J., Heredia, E., and Esteva, L. (2001). “Torsión accidental en sistemas simétricos por efecto de incertidumbre en la rigidez [Accidental torsion in symmetrical systems caused by stiffness uncertainty].” Proc., XIII CNIS, 13th National Conf. on Seismic Engineering, Sociedad Mexicana de Ingenieria Sismica, A. C. (in Spanish).
Information & Authors
Information
Published In
Copyright
© 2011 American Society of Civil Engineers.
History
Received: May 22, 2009
Accepted: Aug 8, 2010
Published online: Aug 25, 2010
Published in print: Apr 1, 2011
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.