ZHOU Qiang,CHEN Dong,XIAO Hui,et al.Seismic Performance Analysis of Masonry Structures based on Uniform Hazard Spectrum[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(06):1233-1239.
ZHOU Qiang,CHEN Dong,XIAO Hui,et al.Seismic Performance Analysis of Masonry Structures based on Uniform Hazard Spectrum[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(06):1233-1239. DOI: 10.13409/j.cnki.jdpme.20211111058.
Seismic Performance Analysis of Masonry Structures based on Uniform Hazard Spectrum
Seismic hazard analysis and ground motion selection play an important role in seismic design of structures. As an important result of probabilistic seismic hazard analysis, the uniform hazard spectrum is usually used as a target spectrum to select ground motion records. In order to improve the deficiency of probabilistic seismic hazard analysis on source propagation characteristics, this paper presented a combination method based on stochastic finite fault simulation and probabilistic seismic hazard analysis. The influence of the hypocenter mechanism, seismic propagation path and site amplification effect was fully considered in the method. The historical earthquakes were simulated in combination with the target site conditions, and the uniform hazard spectrum under the same probability was generated. Selecting the uniform hazard spectrum and standard spectrum as the target spectrum, the dynamic time history analysis of a typical masonry structure was carried out by using seven input seismic waves. The results show that the ground motion obtained by different target spectra has a great influence on the dynamic response of the structures, indicating the importance of rational target spectra selection. The uniform hazard spectrum has a high spectral value in the short period. Taking it as the target spectrum makes the short period dynamic response of the structure larger, which can provide references for the seismic design of structures.
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