建筑结构学报2025，Vol.46Issue(3)：102-116,15.DOI:10.14006/j.jzjgxb.2023.0840
交错桁架钢框架-开缝钢板剪力墙结构横向抗地震倒塌性能
Transversal seismic collapse performance of staggered truss steel frame-steel plates shear wall with slits
于志强 1周绪红2
作者信息
- 1. 湖南大学土木工程学院,湖南长沙 410082
- 2. 湖南大学土木工程学院,湖南长沙 410082||重庆大学土木工程学院,重庆 400045
- 折叠
摘要
Abstract
To meet the demand for the structural ductility in high seismic precautionary intensity zone,a staggered truss steel frame-steel plates shear wall with slits(STSF-SPWS)system was proposed.The transversal seismic collapse resistance of the structure was evaluated on the basis of FEM A P695 and T/CECS 392-2021'Standard for anti-collapse design of building structures'.A plane collaborative analysis model was established to carry out pushover analysis,and the suggested value for the structural influence coefficient of the performance objectives under precautionary earthquake was provided.Based on the Pushover analysis results,the mechanic and deformation characteristics were clarified under each load phase and the seismic collapse decision indexes were obtained.Incremental dynamic analysis(IDA)was conducted to investigate seismic collapse vulnerability and the collapse margin ratio(CMR)was obtained.The evaluation method for the structural seismic collapse performance based on the CMR was adopted.According to the adjusted CMR(ACMR)and collapse probability,the transversal seismic collapse performance of STSF-SPWS was evaluated.The analysis results show that structural influence coefficients of the models investigated in this paper corresponding to the functional continuity,post-repair use,and life safety performance levels are respectively suggested as 2.32,3.38 and 4.28.The seismic collapse decision index of the STSF-SPWS could be valued as 1/25.The STSF-SPWS designed according to the proposed structural influence coefficient could satisfy the safety margin requirement of the FEM A P695 under rare and extremely rare earthquakes.关键词
交错桁架钢框架/开缝钢板剪力墙/增量动力分析/易损性分析/倒塌储备系数/横向抗地震倒塌性能Key words
staggered truss steel frame/steel plates shear wall with slits/incremental dynamic analysis/vulnerability analysis/collapse margin ratio/transversal seismic collapse performance分类
建筑与水利引用本文复制引用
于志强,周绪红..交错桁架钢框架-开缝钢板剪力墙结构横向抗地震倒塌性能[J].建筑结构学报,2025,46(3):102-116,15.
