橡胶集料风积沙混凝土柱抗震性能试验研究  

Experimental study on seismic behavior of crumb rubber aeolian sand concrete columns

作　　者：王尧鸿[1,2] 晁磊 杨晓明 李志强[3] 秦颖 WANG Yaohong;CHAO Lei;YANG Xiaoming;LI Zhiqiang;QIN Ying(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Civil Engineering Structure and Mechanics,Inner Mongolia University of Technology,Hohhot 010051,China;College of Water&Architectural Engineering,Shihezi University,Shihezi 832003,China;College of Civil Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]内蒙古工业大学土木工程学院,呼和浩特010051 [2]内蒙古自治区土木工程结构与力学重点实验室,呼和浩特010051 [3]石河子大学水利建筑工程学院,新疆石河子832003 [4]东南大学土木工程学院,南京211189

出　　处：《世界地震工程》2022年第4期113-119,共7页World Earthquake Engineering

基　　金：国家自然科学基金(51868059);内蒙古自然科学基金(2021MS05022);内蒙古自治区土木工程结构与力学重点实验室开放基金(2021 KF003)。

摘　　要：为研究橡胶集料风积沙混凝土柱的抗震性能,制作了4根相同尺寸的混凝土柱试件,其中包括普通混凝土柱、风积沙混凝土柱、橡胶集料混凝土柱和橡胶集料风积沙混凝土柱。通过低周反复荷载试验,分析各试件的破坏现象、滞回曲线、骨架曲线、刚度退化和延性等抗震性能指标。在试验的基础上,根据能量耗散原理建立累积损伤评价模型,并对结构进行了累积损伤分析。研究结果表明:10%橡胶集料的掺入能够改善混凝土柱的变形能力,但混凝土柱的承载力有所降低;30%风积沙的掺入可以改善混凝土柱的抗震性能;橡胶集料风积沙混凝土柱具有较好的滞回性能,且耗能能力和延性性能明显高于其余试件,柱的抗震性能得到提高;通过累积损伤分析表明:适量掺入橡胶集料和风积沙的可以有效减缓试件的损伤,且该累积损伤模型能够较好的反映出各试件的损伤程度。In order to study the seismic performance of rubber aggregate aeolian sand concrete column,four con⁃crete columns with the same size were made,including ordinaryconcrete column,aeolian sand concrete column,rubber aggregate concrete column and rubber aggregate aeolian sand concrete column.Through the low cycle repeat⁃ed load test,the failure phenomenon,hysteresis curve,skeleton curve,stiffness degradation,ductility andother seismic performance indexes of each specimen were analyzed.On the basis of the test,the cumulative damage eval⁃uation model is established according to the principle ofenergy dissipation,and the cumulative damage analysis of the structure is carried out.Theresults show that the addition of rubber aggregate can improve the deformation ca⁃pacity ofconcrete columns,and make the rubber aggregate aeolian sand concrete column and rubberaggregate con⁃crete column have a certain plastic failure,and the failure mode of eachspecimen is bending failure.The rubber ag⁃gregate aeolian sand concrete column and the rubber aggregate concrete column have better hysteretic perfor⁃mance,and the energy dissipation capacity and ductility of the rubber aggregate aeolian sand concrete column are obviously higher than those of ordinary concrete column and aeolian sand concrete column.The cumulative damage assessment model shows that the concrete column mixed with rubberaggregate and aeolian sand can effectively miti⁃gate the damage of specimens.

关 键 词：风积沙 橡胶集料 混凝土柱 抗震性能 累积损伤 

分 类 号：TU375.4[建筑科学—结构工程]