Considerations of Multimode Structural Response for Near-Field Earthquakes
Publication: Journal of Engineering Mechanics
Volume 129, Issue 4
Abstract
This paper presents an investigation of multimode effects of tall buildings idealized as a continuous shear-beam model subjected to near-field pulse-like ground motion. The investigation is based on three analytical approaches: a damped wave solution approach, a fundamental-mode approach, and a modal summation approach. In the modal summation approach, all modal damping ratios are assumed to be equal and a set of Green’s functions for the shear strain response is explicitly derived. The multimode effects on the base-level shear strain/force demands are compared by using an effective response spectrum for shear-beam systems. The study results show that the occurrence of major spectral differences is conditioned on the ratio of the fundamental structural period to the duration of the predominant excitation pulse. Seismic analyses for a set of recorded near-field earthquake data indicate a strong correlation between the characteristics of effective response spectra and the ground pulse parameters.
Get full access to this article
View all available purchase options and get full access to this article.
References
California Strong Motion Instrumentation Program (CSMIP). (1994). “CSMIP strong-motion records from the Northridge, California earthquake of January 17, 1994.” Rep. No. OSMS 94-07, Sacramento, Calif.
Chopra, A. K., and Chintanapakdee, C.(2001). “Drift spectrum vs. modal analysis of structural response to near-fault ground motions.” Earthquake Spectra, 17(2), 221–234.
Cooley, J. W., and Tukey, J. W.(1965). “An algorithm for the machine calculation of complex fourier series.” Math. Comput., 19(90), 297–301.
Hall, J. F., Heaton, T. H., Halling, M. W., and Wald, D. J.(1995). “Near-source ground motion and its effects on flexible buildings.” Earthquake Spectra, 11(4), 569–605.
Heaton, T. H., Hall, J. F., Wald, D. J., and Halling, M. W.(1995). “Response of high-rise and base-isolated buildings to a hypothetical 7.0 blind thrust earthquake.” Science, 267, 206–211.
Huang, C.-T., and Chen, S.-S.(2000). “Near-field characteristics and engineering implications of the 1999 Chi-Chi earthquake.” Earthquake Eng. Eng. Seismol., 2(1), 23–41.
International Conference of Building Officials (ICBO). (1997). Uniform building code, Whitter, Calif.
Iwan, W. D.(1997). “Drift spectrum: Measure of demand for earthquake ground motions.” J. Struct. Eng., 123(4), 397–404.
Iwan, W. D., and Chen, X. (1994). “Important near-field ground motion data from the Landers earthquake.” Proc., 10th European Conf. on Earthquake Engineering, Balkema, Rotterdam, The Netherlands, 229–234.
Roberts, M. W. (1999). “Seismic structural response from continuous and discrete models.” Master’s thesis, Texas A&M Univ., College Station, Tex.
Veletsos, A. S., Newmark, N. M., and Chelapati, C. V. (1965). “Deformation spectra for elastic and elastoplastic systems subjected to ground shock and earthquake motions.” Proc., 3rd World Conf. on Earthquake Engineering, New Zealand National Committee on Earthquake Engineering, Auckland and Wellington, New Zealand, II-663–II-680.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 4 • April 2003
Pages: 458 - 467
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jan 4, 2001
Accepted: Sep 27, 2002
Published online: Mar 14, 2003
Published in print: Apr 2003
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.