PEC柱RC剪力墙抗震性能试验及数值模拟方法研究  

Experimental and numerical simulation study on the seismic performance of PEC column-RC shear walls

作　　者：张永生 饶纪坤 赵广臣 杨宇焜 吕李华 ZHANG Yongsheng;RAO Jikun;ZHAO Guangchen;YANG Yukun;LV Lihua(Department of Civil Engineering,Shanxi Institute of Technology,Yangquan 045000,China;The Cultivation Base of Shanxi Key Laboratory of Mining Area Ecological Restoration and Solid Wastes Utilization,Shanxi Institute of Technology,Yangquan 045000,China;Anhui Jianke Construction Supervision Co.,Ltd.,Hefei 230000,China;Shanghai Jieyi Construction Technology Co.,Ltd.,Shanghai 201311,China)

机构地区：[1]山西工程技术学院土木工程系,山西阳泉045000 [2]山西工程技术学院矿区生态修复与固废资源化厅市共建山西省重点实验室培育基地,山西阳泉045000 [3]安徽省建科建设监理有限公司,安徽合肥230000 [4]上海结奕建筑科技有限公司,上海201311

出　　处：《地震工程与工程振动》2025年第2期183-191,共9页Earthquake Engineering and Engineering Dynamics

基　　金：山西省基础研究项目(自由探索类)(202203021222324);山西省高等学校科技创新项目(2021L589)。

摘　　要：为研究部分包覆钢-混凝土组合柱钢筋混凝土剪力墙(partially encased composite columns-reinforced concrete shear walls,简称PEC柱RC剪力墙)的抗震性能,设计了2种不同连接形式的PEC柱RC剪力墙进行低周往复加载试验,对其破坏过程、滞回性能、耗能能力、刚度退化与强度退化等抗震性能进行研究。同时,建立了有限元模型对其进行模拟研究,通过试验结果验证了模型的准确性,并分析了不同混凝土强度等级及不同轴压比下PEC柱RC剪力墙的抗震性能。研究结果表明,PEC柱RC剪力墙最终发生剪切破坏,但均具有较高的延性和耗能能力,抗震性能优异,在实际工程应用中PEC柱弱轴连接方式也可以较好地满足抗震性能要求。随着混凝土强度的提升,PEC柱RC剪力墙的承载力有所提高,但延性下降。随着轴压比的增大,PEC柱RC剪力墙的承载力增幅逐渐变小,实际工程设计中宜把轴压比控制在0.4以内。To investigate the seismic performance of partially encased composite columns-reinforced concrete shear walls(referred to as PEC column-RC shear walls),two different connection types were designed and subjected to low-cycle reversed loading tests.The study focused on their failure processes,hysteretic behavior,energy dissipation capacity,stiffness degradation,and strength degradation.Additionally,finite element models were developed to simulate their behavior,which were validated against the experimental results.The models were also used to analyze the seismic performance of PEC column-RC shear walls under different concrete strength grades and axial compression ratios.The results indicate that PEC column-RC shear walls ultimately experience shear failure,yet they exhibit high ductility and energy dissipation capacity,demonstrating excellent seismic performance.In practical engineering applications,the weak-axis connection method for PEC columns can effectively meet seismic performance requirements.As the concrete strength increases,the load-bearing capacity of PEC column-RC shear walls improves,although the ductility decreases.With an increase in the axial compression ratio,the rate of increase in load-bearing capacity diminishes.It is recommended to keep the axial compression ratio below 0.4 in practical engineering designs.

关 键 词：PEC柱RC剪力墙 强轴连接 弱轴连接 抗震性能 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程] P315.9[天文地球—地震学]