受火双钢板-混凝土组合剪力墙加固后抗震性能试验  

Experiment on seismic behavior of fire-fired composite shear wall with double steel plates and infill concrete after reinforcement

作　　者：韦芳芳[1] 李丽萍 徐庆鹏 赵有正 杨晶晶 WEI Fang-fang;LI Li-ping;XU Qing-peng;ZHAO You-zheng;YANG Jing-jing(College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学土木与交通学院,南京210098

出　　处：《吉林大学学报(工学版)》2025年第1期230-244,共15页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51608168)。

摘　　要：为研究受火双钢板-混凝土组合剪力墙加固后的抗震性能,首先,本文进行了1片常温和3片高温后组合剪力墙试件(其中两片组合剪力墙火灾后加固)的拟静力试验,对试件的破坏形态、滞回曲线、骨架曲线、耗能能力、刚度退化等进行分析;然后,基于试验结果,通过有限元软件ABAQUS建立有限元模型;最后,对组合剪力墙进行参数化分析。结果表明:试件拟静力试验的破坏形式均为压弯破坏,极限位移角在1/63~1/45,满足框架-核心筒结构转角的要求;位移延性系数在2.18~3.1,说明组合剪力墙抗震性能良好;有限元模拟结果与试验结果吻合较好,说明本文模型合理可靠;对火灾时间、试件轴压比及截面配钢率的参数化分析表明试件的极限抗侧承载力会随着轴压比的增大而降低,在火灾作用下,轴压比对承载力的退化影响会显著放大,增大截面配钢率可以显著提高试件的抗侧刚度及抗剪承载力;对加固位置、加固钢板厚度的参数化分析表明,由于受火侧钢板火灾后强度退化程度最高,因此,必须对受火侧进行加固。To study the seismic behavior of fire-fired composite shear wall with double steel plates and infill concrete after reinforcement,firstly,1 piece of composite sheer wall of room temperature and 3 pieces of composite sheer wall of high temperature (two of the combined shear walls were reinforced after fire) were tested under quasi-static loading,and the failure form,hysteresis curve,skeleton curve,energy dissipation and stiffness degradation of the specimen were evaluated.Then,based on the test results,the finite element models were established by the finite element software ABAQUS.At last,the composite shear wall was parametrically analyzed.The results show that the failure mode of the specimens are all bending failure,the limit displacement angle is between 1/63 and 1/45,which meets the requirements of the angle of the frame-core tube structure,and the displacement ductility coefficient is between 2.18 and 3.1,indicating that the composite shear wall has good seismic performance.The finite element simulation results were reasonable and reliable.Parametric analysis shows that the ultimate lateral bearing capacity of the specimen decreases with the increase of the axial compression ratio,the degradation effect of axial pressure ratio on bearing capacity will be significantly amplified under the action of fire,and increasing the cross-sectional steel matching ratio can significantly improve the lateral stiffness and shear bearing capacity of the specimen.Since the steel plate on the fire side has the highest degree of strength degradation after a fire,the fire side must be reinforced.

关 键 词：结构工程 双钢板-混凝土组合剪力墙 粘钢加固 拟静力试验 抗震性能 

分 类 号：TU398[建筑科学—结构工程]