轻质填充墙对RC框架结构抗震性能影响研究  

Influence of Lightweight Infill Walls on Seismic Performance of RC Frame Structures

作　　者：黄思凝[1] 石宏彬[2] 郭迅[3] 孙得璋[3] HUANG Sining;SHI Hongbin;GUO Xun;SUN Dezhang(College of Pipeline and Civil Engineering,China University Petroleum,Qingdao 266580,China;College of Civil and Architectural Heilongjiang Institute of Technology,Harbin,150022,China;Institute of Engineering Mechanics,China Earthquake Administration,Harbin,150080,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]黑龙江工程学院土木与建筑工程学院,黑龙江哈尔滨150022 [3]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《应用基础与工程科学学报》2019年第5期1054-1064,共11页Journal of Basic Science and Engineering

基　　金：国家重点研发计划(2018YFC1504404);山东省优秀中青年科学家科研奖励基金(2014BSE28027);国家自然科学基金项目(51308510,51678544);中央高校基本科研业务费专项资金资助(15CX02055A)

摘　　要：通过对轻质填充墙RC框架模型进行振动台试验及数值模拟分析,研究了轻质填充墙在其不同破坏阶段对整体结构抗震性能的影响,分析了整体结构的破坏特征、频率衰减、刚度退化、层间位移角变化及耗能情况,并对比了框架填充墙与空框架模型的模拟结果.研究结果表明:轻质填充墙在其破坏初期对结构频率影响超出规范预期,起到主要抗侧力构件作用,耗散了大部分的地震能量,保护了结构主体;而当它进入极限破坏阶段后对结构整体刚度及耗能上的贡献趋于定值.因此,轻质填充墙对RC框架结构的抗震性能有明显增强作用、不能忽略.The influence of lightweight infill walls on the seismic performance of RC frame structures was studied based on both shaking table tests and numerical simulations.To evaluate the contribution of infill walls during different stages of seismic damage,the damage characteristics,frequency attenuation,stiffness degeneration,inter-story drift,and energy consumption of the overall structure were analyzed.The results obtained by shaking table tests and numerical simulations were compared.It was found that in the early stage of seismic damage,infill walls played an important role in resisting the lateral force and dissipated most of the seismic energy.Their influence on the modal frequency of the entire structure exceeds that predicted by the existing code.As the growth of damage this contribution decayed,and in the ultimate failure stage it reached to a certain level.Nevertheless,infill walls still had a beneficial effect on the seismic resistance of the overall structure.Therefore,it can be concluded that lightweight infill walls significantly enhance the seismic performance of RC frame structures,and this influence is not to be neglected.

关 键 词：轻质填充墙 钢筋混凝土框架 抗震性能 振动台试验 混凝土空心砌块 

分 类 号：TU318[建筑科学—结构工程]