基于线性和非线性分析的低烈度荷载预制墙体系实例研究

Patrick Liq Yee Tiong , Sing Ping Chiew , Beng Hur Teow
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引用次数: 1

摘要

本文研究了承重预制墙系统(即HC预制系统- HCPS)在马来西亚地震活动下的行为。最近,全国各地都有震感,这使人们呼吁实施抗震设计指南。对于这项研究,马来西亚的地面加速度设计尚未最终确定。多年来,不同的研究人员对设计地面加速度的值产生了几个流派的想法,范围从0.05 g到0.1 g。所选价值的影响可能很大,特别是在设计新建筑物或改造现有建筑物时。因此,本研究使用模态反应谱分析(MRSA)进行线性分析,并对具有代表性的HCPS进行非线性推覆分析。有限元(FE)模型特别关注预制墙和现浇柱之间界面的非线性行为。在模态分析和推覆分析之前,将有限元模型与文献中相同预制体系的准静力循环试验结果进行了验证。提出并讨论了MRSA和易发方法之间的差异。结构系统的性能水平受到三个水平的设计地面加速度(0.05,0.075和0.1 g)已包括在内。
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Case study of load-bearing precast wall system subject to low seismic intensity by linear and nonlinear analyses

This paper investigates the behaviour of load-bearing precast wall system (namely the HC Precast System − HCPS) subject to seismicity in Malaysia. Recent tremors felt across the country heeded the call for the need of seismic design guidelines to be implemented. For this study, the design ground acceleration for Malaysia has not been finalized. Throughout the years, several schools of thought that occurred among different researchers pertaining to the value of design ground acceleration, ranging from 0.05 g to 0.1 g. The implications of the selected values can be great especially in designing new buildings or retrofitting existing ones. Thus, linear analysis using Modal Response Spectrum Analysis (MRSA) and nonlinear pushover analysis of representative HCPS were performed for this study. The finite element (FE) model focused particularly on the nonlinear behaviour of the interface between a precast wall and cast in-situ column. Prior to the modal and pushover analyses, the FE model was validated against quasi-static cyclic test results of identical precast system obtained from literature. Differences between the MRSA and pushover approaches are presented and discussed. Performance levels of the structural system were subjected to three levels of design ground acceleration (0.05, 0.075 and 0.1 g) have been included.

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