哈尔滨工程大学学报2015，Vol.36Issue(10)：1326-1330,1334,6.DOI:10.11990/jheu.201406003
不同加载速率下梁柱边节点的抗震性能
Seismic behavior of exterior beam-column joints under different loading speeds
摘要
Abstract
In order to study the dynamic mechanical properties of exterior beam-column joints, the dynamic loading tests on the specimens combined by three exterior beam-column joints were carried out with displacement control loading. The softened strut-and-tie model predicted the development of cracks in the core area of the loaded joints. The effects of the axial compression ratio and the loading speed on the failure mode, carrying capacity, displace-ment ductility of the loaded joints were analyzed. The results show that the number of cracks within joints and the angle between diagonal cracks and vertical axial force of the joint core area decrease as the axial compression ratio increases. As the loading speed increases, the number of fractured aggregates grows on the specimen surface, lead-ing to transfer of the seriously damaged part in the combined joints. Also, the horizontal shear carrying capacity of the specimen improves 9.73% as the loading speed increases, but the effect of the axial compression ratio on the horizontal shear carrying capacity of the specimen is not obvious. The deformation capacity of the joint combination is reduced with the increase of the axial compression ratio or the loading speed.关键词
梁柱边节点/加载速率/轴压比/软化拉-压杆模型/破坏形态/承载力/位移延性/抗震性能Key words
exterior beam-column joint/loading speed/axial compression ratio/softened strut-and-tie model/fail-ure mode/carrying capacity/displacement ductility/seismic behavior分类
建筑与水利引用本文复制引用
范国玺,王德斌,杨树桐,郭海燕,宋玉普..不同加载速率下梁柱边节点的抗震性能[J].哈尔滨工程大学学报,2015,36(10):1326-1330,1334,6.基金项目
国家自然科学基金重大研究计划重点资助项目(90815026) （90815026）
中国海洋大学科研启动基金资助项目(201511013). （201511013）
