钢框架哺职寮袅η浇峁剐薷春蟮氖褂眯阅苤副
2021-02-18袁昌鲁李嘉锴杨宁
袁昌鲁 李嘉锴 杨宁



摘要: 为便于钢框架-钢板剪力墙结构震后快速修复,统计既有实验结果,提出修复后使用的三级性能指标,基于等效拉杆理论,研究结构在侧向载荷作用下塑性铰的出现顺序、层间位移角和结构应力发展等情况,并建立有限元模型对指标进行验证。结果表明:在一级修复性能指标(位移角1/220)下,结构板墙轻微受损,对应的修复方法为对板墙进行轻微修复;在二级修复性能指标(位移角1/110)下,结构板墙几乎全面进入塑性状态,需要考虑换板或增加加劲肋修复;在三级修复性能指标(位移角1/85)下,结构板墙已经全部进入屈服状态,而且框架梁端也出现塑性铰,此时不仅需要对板墙进行修复,还要考虑对框架进行修复。
关键词: 钢板剪力墙; 等效拉杆模型; 层间位移角; 塑性铰; PUSHOVER分析; 性能指标
中图分类号: TU392.4; TB115.1文献标志码: B
收稿日期: 2021-11-20修回日期: 2021-12-01
基金项目: 山东省自然科学基金(ZR2016EEQ27)
作者简介: 袁昌鲁(1987—),男,山东泰安人,博士,讲师,研究方向为钢结构抗震性能,(E-mail)ycl384384@163.com
通信作者: 李嘉锴(1996—),男,山东济宁人,硕士研究生,研究方向为钢结构抗震性能,(E-mail)cangshu1101@163.comService performance index of
steel frame-plate shear wall structure after repair
YUAN Changlu, LI Jiakai, YANG Ning
(School of Civil Engineering, Shandong Jianzhu University, Jinan 250100, China)
Abstract: To facilitate the rapid repair of steel frame-steel plate shear wall structure after earthquake, the three-level performance indexes to the structure repair are put forward according to the statistics of the existing test results. Based on the equivalent tie rod theory, the occurrence sequence of plastic hinges, displacement angle between layers and structural stress development of the structure under lateral load are studied, and the finite element model is established to verify the indexes. The results show that, under the first level repair performance index (displacement angle 1/220), the structural plate wall is slightly damaged, and the corresponding repair method is to slightly repair the plate wall; under the secondary level repair performance index (displacement angle 1/110), almost all of the structural plate wall enters the plastic state, so it is necessary to consider replacing the plate or adding stiffeners for repair; under the third level repair performance index (displacement angle 1/85), all of the structural plate and wall have entered the yield, and the plastic hinge also appears at the end of the frame beam, so it is necessary to repair not only the plate and wall, but also the frame.
Key words: steel plate shear wall; equivalent tie rod model; displacement angle between layers; plastic hinge; PUSHOVER analysis; performance indicators
0引言鋼板剪力墙结构是一种高效的侧向支撑体系,20世纪70年代,日本的Shin Nittetsu Building[1]开始采用该结构,自此,钢板剪力墙结构以初始刚度大、延性性能好以及易于修复等优点得到国内外学者的广泛关注与研究[2]。目前,对于钢框架-钢板剪力墙的力学性能和结构设计的研究已相对完善,而对于该结构的震后修复性能指标的研究较少。……
