PROBABILISTIC SEISMIC ASSESSMENT OF RESIDUAL DRIFT DEMANDS IN EXISTING BUILDINGS

摘要：

This paper presents a probabilistic approach to estimate residual drift demands (e.g. residual roof, residual drift at specific stories, and maximum residual drift over all stories) during the seismic performance-based assessment of existing multi-story buildings. The suggested approach combines residual drift demand fragility curves with very recently introduced maximum inelastic displacement seismic hazard curves to obtain sitebuilding- specific residual drift demand hazard curves which express the mean annual frequency of exceeding residual drift demands. In particular, functional models that capture the variation of central tendency and dispersion of residual drift demands with changes in the ground motion intensity are proposed. It is shown that the proposed procedure can be very helpful during the performance-based seismic assessment of existing multistory building frames since it incorporates explicitly the epistemic uncertainty (i.e. record-to-record variability) inherent in the estimation of residual drift demands at the end of the seismic excitation

关键词： Probabilistic assessment residual drift seismic assessment inelastic intensity measure

作者: J. Ruiz-García E. Miranda

作者单位: Facultad de Ingeniería Civil, Univ. Michoacana de Sn. Nicolás de Hidalgo, Morelia. México Dept. of Civil and Environmental Engrg., Stanford University, Stanford. USA

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）