摘要
为满足震后建筑结构快速修复的需求,提出一种以高强钢棒(HG钢棒)作为暗柱纵筋的短肢剪力墙,即采用高强钢棒的混凝土短肢剪力墙,预制3片1/3缩尺的钢筋混凝土短肢剪力墙,通过拟静力试验分析暗柱纵筋类型和轴压比对试件抗震性能及自复位能力的影响.试验结果表明:与普通混凝土短肢剪力墙相比,在大变形时,高强钢棒-混凝土短肢剪力墙构件表现出良好的位移-硬化效应和自复位性,滞回曲线整体呈S形,极限承载力提高83%;其残余变形较小,在位移角3.0%时,残余变形为0.65%;在高轴压比(限值)作用下,高强钢棒-混凝土短肢剪力墙构件的极限承载能力提高11%,在位移角3.5%时,残余变形为0.50%.
To meet the demand for rapid repair of building structures after earthquakes,a short-leg shear wall with high-strength steel bars(HG bars)as longitudinal reinforcement of the concealed column,namely short-leg shear wall with high-strength steel bars was proposed.Three prefabricated 1/3-scale reinforced concrete short-leg shear wall components were constructed,and quasi-static tests were conducted to analyze the effects of longitudinal reinforcement types of the concealed column and axial compression ratio on the seismic performance and self-restoring capability of the components.The test results show that compared to the ordinary concrete short-leg shear walls,the short-leg shear wall components with HG steel bars demonstrate a good displacementhardening effect and self-restoring capability under large deformations and develop an overall S-shaped hysteresis curve and an 83%increase in the ultimate bearing capacity.While the residual deformation is relatively small,a residual deformation of 0.65%occurs at a displacement angle of 3.0%.In addition,under the high axial compression ratio(limit value),the ultimate bearing capacity of short-leg shear wall components with HG steel bars increases by 11%,and the residual deformation is 0.50%at a displacement angle of 3.5%.
作者
袁维光
赵华
马兰
肖强
魏丞瑾
YUAN Weiguang;ZHAO Hua;MA Lan;XIAO Qiang;WEI Chengjin(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China;College of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,China;Key Laboratory of Geohazard Prevention of Hilly Mountains,Ministry of Natural Resources of China,Fuzhou 350002,China)
出处
《西南交通大学学报》
北大核心
2025年第5期1195-1202,共8页
Journal of Southwest Jiaotong University
基金
西藏自治区自然资源厅项目(藏财采20200890-1)。
关键词
高强钢棒
短肢剪力墙
轴压比
抗震性能
自复位能力
high-strength steel bar
short-leg shear wall
axial compression ratio
seismic performance
selfrestoring ability
