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原文传递 Seismic Fragility Evaluation of Lightly Reinforced Concrete-Block Shear Walls for Probabilistic Risk Assessment

题名：	Seismic Fragility Evaluation of Lightly Reinforced Concrete-Block Shear Walls for Probabilistic Risk Assessment
其他题名：	Abrams,D.P.,and Paulson,T.J.(1991)."Modeling earthquake response of concrete masonry building structures."ACI Struct.J.,88(4),475-485.
正文语种：	英文
作者：	Saeid Mojiri
关键词：	Analytical fragility curves;Analytical modeling;Reinforced masonry;Nonlinear response history analysis;Seismic risk assessment;Concrete and masonry structures
摘要：	With the North American seismic codes moving toward adopting performance-based seismic design (PBSD) approaches, there is a need to develop seismic probabilistic risk assessment (PRA) tools for different construction systems, including reinforced masonry (RM). The current study focuses on the development of analytical fragility curves based on the performance of RM walls tested under base excitation generated by a shake table. The study has two phases. In the first phase, the seismic response of the RMshear walls is modeled using a simplified analytical model that was calibrated using previously reported shake table experimental results. The second phase of the study focuses on the development of fragility curves, as an essential component of a PRA framework, for two-story lightly reinforced masonry walls. In this phase, relevant limit states are defined and the corresponding capacities of the walls are quantified based on the shake table test results. The wall seismic demand levels are then determined through a probabilistic seismic demand analysis (PSDA) approach by performing 120 nonlinear response history analyses using the analytical model developed in the first phase. Fragility curves are derived based on the experimental capacity data and the analytical PSDA results. The results indicate that the lightly reinforced masonry shear wall category considered in this study would experience acceptable seismic performance associated with moderate lateral wall top-roof drifts even when subjected to ground motion records representing some of the highest seismic regions in eastern and western Canada. The study is a part of a larger ongoing PRA research program to provide the needed seismic performance data to facilitate the inclusion of different RM construction categories within the next generation of PBSD codes in North America.
出版年：	2015
论文唯一标识：	P-26Y2015V141N04004
英文栏目名称：	Technical Papers
doi：	10.1061/(ASCE)ST.1943-541X.0001055
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	141
期：	04
页码：	19-31