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原文传递 Reinforced Masonry Building Seismic Response Models for ASCE/SEI-41

题名：	Reinforced Masonry Building Seismic Response Models for ASCE/SEI-41
其他题名：	Abdellatef,M.(2011)."The development of a simplified modelling technique for the finite element analysis of reinforced masonry shear walls."M.Sc.thesis,Dept.of Civil and Environmental Engineering,Washington State Univ.,Pullman,WA.
正文语种：	英文
作者：	Mohamed Ezzeldin
关键词：	Backbone model;Hysteretic response;Nonlinear analysis;OpenSees;Reinforced masonry;System-level behavior; Concrete and masonry structures
摘要：	The development of models to predict the inelastic behavior of the individual components of a building system at different performance levels is an essential step in performing nonlinear static and dynamic analyses, as recommended by ASCE/SEI-41. However, current methodologies for generating nonlinear models for reinforced masonry shear wall (RMSW) buildings do not adequately account for various system-level aspects, such as the influence of the floor slab stiffness. Several recent studies have shown that these aspects would significantly alter the overall building response under seismic loading. In addition, although ASCE/SEI-41 defines the capacity parameters of reinforced masonry shear walls (RMSWs) with rectangular cross sections through standardized force-displacement backbone relationships, no corresponding relationships are available for RMSWs with boundary elements. Moreover, ASCE/SEI-41 does not provide the necessary hysteretic parameters required to define the cyclic behavior of any type of RMSWs under seismic loading. To address these issues, this study focuses on developing two ASCE/SEI-41 relevant models for RMSWbuildings, based on the currently available provisions pertaining to their reinforced concrete (RC) counterparts. The first model is a backbone model for RMSW buildings without and with boundary elements that can be used to perform nonlinear static analyses. The experimentally validated modeling approach shows that RC parameters are applicable, but it is critical to include the out-of-plane stiffness of the floor diaphragms when evaluating the overall building response. The second model is a concentrated plasticity (spring) model in OpenSees used to simulate the hysteretic response of RMSW buildings with different configurations, to conduct nonlinear dynamic analyses. Finally, the developed numerical hysteretic responses are compared with experimental results in terms of the most relevant characteristics, including the initial stiffness, peak load, and stiffness and strength degradation as applicable. This study aims at presenting useful system-level response prediction tools for the nonlinear static and dynamic procedures specified by ASCE/SEI-41.
出版年：	2018
论文唯一标识：	P-26Y2018V144N01004
英文栏目名称：	ANNIVERSARY PAPERS
doi：	10.1061/(ASCE)ST.1943-541X.0001914
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	144
期：	01
页码：	23-35