带滑动次梁的装配式自复位空间钢框架数值模拟与分析  

Numerical Simulation and Analysis of Prefabricated Self-centering Spatial Steel Frame with Sliding Secondary Beams

作　　者：张艳霞 张大为[1] 武丙龙 费晨超 ZHANG Yanxia;ZHANG Dawei;WU Binglong;FEI Chenchao(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center,Beijing University of Civil Engineering and Architecture,Beijing 102627,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学北京节能减排与城乡可持续发展省部共建国家协同创新中心,北京102627

出　　处：《建筑钢结构进展》2023年第5期13-23,共11页Progress in Steel Building Structures

基　　金：北京市教委科研项目(KZ201910016018);长江学者和创新团队发展计划项目(IRT_17R06)。

摘　　要：为了适应装配式自复位空间钢框架的节点开口和框架整体膨胀效应,提出一种带滑动次梁构造的装配式自复位空间钢框架。采用ABAQUS软件对装配式自复位空间钢框架进行有限元数值模拟对比分析,并在数值模拟基础上完成了新型滑动次梁的可行性分析。结果表明:数值模拟结果在节点开口、滞回曲线、索力变化和应变等方面均与试验结果吻合良好,验证了采用有限元方法研究的可行性;新型滑动次梁的设计有效地放松了楼板对装配式自复位空间钢框架的约束作用,达到了新型滑动次梁与自复位节点同步开口的目标,顺利实现了开口-闭合机制。In order to accommodate the gap and the overall expansion effect of the prefabricated self-centering spatial steel frame,a new prefabricated self-centering spatial steel frame with sliding secondary beam is proposed.In this paper,the ABAQUS software is used to conduct finite element simulation on the prefabricated self-centering spatial steel frame.The feasibility analysis of the new sliding secondary beam is completed based on the numerical simulation.The results of numerical simulation show a good agreement with the experiment results on several aspects,such as gap opening,hysteretic curve,variation of cable force and strain.The feasibility of finite element model is verified.The new sliding secondary beam effectively releases the constraint of the slab on the prefabricated self-centering spatial steel frame.The opening of the new sliding secondary beam is able to be keep pace with that of the self-centering connection.Meanwhile,the opening-closing mechanism can be realized.

关 键 词：装配式 自复位空间钢框架 约束 滑动次梁 数值模拟 开口-闭合机制 

分 类 号：TU391[建筑科学—结构工程]