摘要
螺栓连接偏心支撑钢框架可以实现工厂预制并现场安装的施工模式,与传统焊接偏心支撑相比,其震后替换耗能梁段更方便快捷。为了研究震后替换耗能梁段对偏心支撑钢框架抗震性能的影响,先对一个螺栓连接偏心支撑钢框架进行拟静力循环加载,在第一次试验的基础上,保持其他构件不变,仅替换损坏的耗能梁段进行再次试验,并从滞回曲线、承载力、延性、耗能等方面分析了两次试验的抗震性能差异。研究结果表明:震后替换耗能梁段的模型的承载力、延性系数和耗能梁段转动能力与原模型相比并无明显差别,其耗能能力下降明显。由于螺栓滑移的影响,两次试验的滞回曲线均呈“梭”形。
Bolted link of eccentrically braced steel frame can realize the construction mode of factory prefabrication and spot installation. Compared with traditional welding eccentrically braced steel frame, it is more conveniently and quickly to replace link after earthquake. In order to study the influence of the post-earthquake replacement beam link with energy-dissipation on seismic performance of eccentrically braced steel frame, the pseudo-static cyclic loading of a bolted link eccentrically braced steel frame was carried out. On the basis of the first test, the other components were unchanged, only the damaged beam link with energy-dissipation was replaced to test again. The differences of seismic performance between the two tests were analyzed from hysteretic curve, bearing capacity, ductility and energy consumption. The results of research show that the bearing capacity, ductility and rotation capacity of the replacement beam link with energy-dissipation after earthquake are not significantly different from the original model, but the energy-dissipating capacity decreases significantly. Due to the effect of bolt slip, the hysteretic curves of both tests are in the shape of "shuttle".
作者
李通
王新武
时强
布欣
孙海粟
LI Tong;WANG Xinwu;SHI Qiang;BU Xin;SUN Haisu(School of Civil Engineering,Henan University of Science&Technology,Luoyang 471023,China;Henan International Joint Laboratory of New Civil Engineering Structure,Luoyang Institute of Science and Technology,Luoyang 471023,China;School of Science,Wuhan University of Science and Technology,Wuhan 430070,China)
出处
《建筑结构》
CSCD
北大核心
2022年第5期63-69,共7页
Building Structure
基金
国家自然科学基金项目(51678284)
河南省科技创新杰出人才项目(184200510016)。
关键词
螺栓连接
偏心支撑钢框架
替换耗能梁
拟静力试验
抗震性能
bolted link
eccentrically braced steel frame
replacement beam link with energy-dissipation
pseudo-static test
seismic performance
