足尺RC剪力墙倒塌试验和数值模拟研究  

Collapse experiment and numerical investigation of full-scale RC shear walls

作　　者：曾德民 马泽昊 王心宇 杨参天 ZENG Demin;MA Zehao;WANG Xinyu;YANG Cantian(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Multi-Functional Shaking Tables Laboratory,Beijing University of Civil Engineering and Architecture,Beijing 102616,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学大型多功能振动台阵实验室,北京102616

出　　处：《地震工程与工程振动》2023年第4期97-103,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家重点研发计划项目(2019YFE0198900);北京建筑大学英才项目(JDYC20200306)。

摘　　要：钢筋混凝土(RC)剪力墙是我国工程结构中的重要抗震抗倒塌构件,其抗倒塌性能是研究结构抗震抗倒塌性能的关键。以一足尺RC剪力墙试件作为研究对象,对其进行了拟静力倒塌试验,基于损伤特征,提出了适用于该类构件的组合建模模拟方法。结果表明:剪力墙试件的破坏模式为弯曲破坏,当试件位移角达到1/39时,试件底部有5根纵筋和1根箍筋发生断裂,底部混凝土被压溃,试件水平承载力下降至峰值承载力的12.5%,构件发生倒塌;基于组合建模方法,对该试件进行模拟,该方法可以较好地模拟试件的受力特征、变形能力和滞回行为,数值模拟所得的屈服、峰值和极限承载力与试验结果的相对误差不超过2.71%。Reinforced concrete(RC)shear walls are important seismic and collapse-resistant components of engineering structures in China,and their collapse-resistant performance is the key of the study on the seismic and collapse-resistant performance of structures.In this study,one full-scale RC shear wall specimen is selected as the object,and the pseudo-static collapse experiment is conducted.Based on the damage characteristics,the hybrid simulation method of such component is proposed.The results indicate that bending failure is the failure mode of shear wall specimen;when the drift ratio of specimen reaches 1/39,five longitudinal reinforcements and one stirrup at the bottom of the specimen are fractured,and concrete at the bottom is crushed,the horizontal load decreases to 12.5%of the peak load,and the specimen collapses.Based on the hybrid simulation method,the specimen is simulated,and the method can well capture the mechanical characteristics,deformation capacity and hysteresis behavior.The errors of the simulated yield,peak and ultimate load obtained from the numerical simulation both are no more than 2.71%of the test results.

关 键 词：钢筋混凝土剪力墙 拟静力试验 抗震性能 倒塌 数值模拟 

分 类 号：TU398.2[建筑科学—结构工程]