Probabilistic Seismic Performance Assessment of Setback Buildings under Bidirectional Excitation
Publication: Journal of Structural Engineering
Volume 140, Issue 2
Abstract
In this paper, the seismic performance of one-side setback structures is investigated with a probabilistic approach. The effects of the simultaneous action of two orthogonal ground motion components on the performance of structures with different setback ratios are assessed by studying (1) the limit-state capacities, (2) the mean annual frequencies of exceeding performance levels, and (3) the confidence levels in meeting performance objectives. The results show that the simultaneous influence of ground motion components on the seismic performance of these structures is significant over the entire range of structural responses from elasticity to global instability. In addition, the assessment of code-designed setback structures by incremental dynamic analysis demonstrates the poorer performance of these torsionally coupled structures relative to regular structure, depending on the setback ratio values. Therefore, the revision of seismic codes provisions for geometric vertical irregularities seems to be essential to stipulate more restrictive limits or apply more accurate analytical procedures to predict the seismic performance of setback structures under the simultaneous orthogonal seismic excitations, especially for structures with critical setback ratios.
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References
ASCE. (2006). “Minimum design loads for buildings and other structures.”, Reston, VA.
Bianchini, M., Diotallevi, P. P., and Baker, J. W. (2009). “Prediction of inelastic structural response using an average of spectral accelerations.” 10th Int. Conf. Structural Safety and Reliability, CRC Press, Taylor and Francis Group, FL.
Building and Housing Research Center (BHRC). (2010). “Iranian code of practice for seismic resistant design of buildings.” Standard No. 2800-05, 3rd Ed., Tehran, Iran.
Computers, and Structures (CSI). (2006). “Nonlinear analysis and performance assessment of structures–user guide.” Perform-3D (Version 4.0.3), Berkeley, CA.
Cornell, C. A., Jalayer, F., Hamburger, R. O., and Foutch, D. A. (2002). “The probabilistic basis for the 2000 SAC FEMA steel moment frame guidelines.” J. Struct. Eng., 526–534.
Duan, X. N., and Chandler, A. M. (1995). “Seismic torsional response and design procedures for a class of setback frame buildings.” Earthquake Eng. Struct. Dyn., 24(5), 761–777.
European Committee for Standardization (CEN). (2003). “Design of structures for earthquake resistance-part 1: General rules, seismic actions and rules for buildings.” Eurocode 8, Draft 6, Brussels, Belgium.
Federal Emergency Management Agency (FEMA). (2000a). “State of the art report on system performance of moment resisting steel frames subjected to earthquake ground shaking.”, Washington, DC.
Federal Emergency Management Agency (FEMA). (2000b). “State of the art report on connection performance.”, Washington, DC.
Federal Emergency Management Agency (FEMA). (2000c). “Recommended seismic design criteria for new steel moment-frame buildings.”, Washington, DC.
Federal Emergency Management Agency (FEMA). (2000d). “Recommended seismic evaluation and upgrade criteria for existing welded steel moment-frame buildings.”, Washington, DC.
International Conference of Building Officials (ICBO). (1997). “Structural engineering design provisions.” Uniform building code Vol. 2, Whittier, CA.
Jalayer, F., and Cornell, C. A. (2003). “A technical framework for probability-based demand and capacity factor design (DCFD) seismic formats.”, Pacific Earthquake Engineering Center, Berkeley, CA.
Jones, P., and Zareian, F. (2010). “Relative safety of high-rise and low-rise steel moment-resisting frames in Los Angeles.” Struct. Des. Tall Spec. Build., 19(1–2), 183–196.
Karavasilis, T. L., Bazeos, N., and Beskos, D. E. (2008). “Seismic response of plane steel MRF with setbacks: Estimation of inelastic deformation demands.” J. Constr. Steel Res., 64(6), 644–654.
Kim, T., Whittaker, A., Gilani, A., Bertero, V., and Takhirov, S. (2002). “Experimental evaluation of plate-reinforced steel moment-resisting connections.” J. Struct. Eng., 483–491.
Lagaros, N. D. (2010). “Multicomponent incremental dynamic analysis considering variable incident angle.” Struct. Infrastruct. Eng., 6(1–2), 77–94.
Pirizadeh, M., and Shakib, H. (2010). “Response of setback frame buildings due to seismic random vibration analysis.” 14th Symp. Earthquake Eng., Indian Institute of Technology, Roorkee.
Pirizadeh, M., and Shakib, H. (2011). “Evaluation of efficient ground motion intensity measure for vertical irregular structures by aims of reducing the dependency of results to record selection.” 6th Int. Conf. Seismology and Earthquake Engineering, International Institute of Earthquake Engineering and Seismology, Tehran, Iran.
Pirizadeh, M., and Shakib, H. (2013). “Probabilistic seismic performance evaluation of non-geometric vertically irregular steel buildings.” J. Constr. Steel Res., 82(1), 88–98.
Rezaeian, S., and Der Kiureghian, A. (2012). “Simulation of orthogonal horizontal ground motion components for specified earthquake and site characteristics.” Earthquake Eng. Struct. Dyn., 41(2), 335–353.
Shahrooz, B. M., and Moehle, J. P. (1990). “Seismic response and design of setback buildings.” J. Struct. Eng., 1423–1439.
Shakib, H., Pirizadeh, M., Emadi, A., and Shakib, S. (2010). “Architectural effects on the seismic behavior of Tehran tall buildings.” Proc., U.S.-Iran-Turkey Seismic Workshop, Pacific Earthquake Engineering Research Center, California.
Vamvatsikos, D., and Cornell, C. A. (2002). “Incremental dynamic analysis.” Earthquake Eng. Struct. Dyn., 31(3), 491–514.
Vamvatsikos, D., and Cornell, C. A. (2004). “Applied incremental dynamic analysis.” Earthquake Spectra., 20(2), 523–553.
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© 2013 American Society of Civil Engineers.
History
Received: Jun 13, 2012
Accepted: Feb 26, 2013
Published online: Feb 28, 2013
Published in print: Feb 1, 2014
Discussion open until: Mar 23, 2014
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