建筑结构

2020, v.50;No.536(20) 103-108+30

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薄钢板剪力墙加固带填充墙钢筋混凝土框架结构抗震性能试验研究
Experimental study on seismic performance of reinforced concrete frame structure with infill wall reinforced by thin steel plate shear wall

任小朋;高涌涛;
REN Xiaopeng;GAO Yongtao;Sichuan College of Architectural Technology;Environment & Civil Engineering Department, Chengdu University of Technology;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection;

摘要(Abstract):

采用薄钢板剪力墙加固既有钢筋混凝土框架结构是一种简便有效的结构修复方法。为研究采用薄钢板剪力墙加固的带填充墙钢筋混凝土框架结构的抗震性能,对5个缩尺比为1∶3不同形式的两层单跨钢筋混凝土模型进行了水平荷载作用下的低周反复试验,分析了各模型的滞回性能、延性及耗能能力。结果表明,在水平荷载作用下薄钢板剪力墙加固的带有填充墙钢筋混凝土框架结构的水平承载力、耗能能力及延性均得到了明显的提升;与纯框架结构相比,有完整填充墙的框架结构的水平承载力、耗能能力和延性均有所提升,但带洞口填充墙的框架结构的延性并未提高;采用薄钢板剪力墙加固后的带填充墙钢筋混凝土框架结构的承载力和耗能能力均有提高,但延性均有降低,其原因是薄钢板平面内拉力场的作用引起钢筋混凝土框架柱内的剪力明显增加所致。
It is a simple and effective method to use thin steel plate shear wall to reinforce existing reinforced concrete frame structure. In order to study the seismic performance of reinforced concrete frame structures with infill walls reinforced with thin steel plate shear walls, five two-story, single-span reinforced concrete models with a scale ratio of 1∶3 were performed under horizontal loads through low cycle trial and error. The hysteretic performance, ductility and energy dissipation capacity of each model were analyzed. The results show that the horizontal bearing capacity, energy dissipation capacity and ductility of reinforced concrete frame structures with thin steel plate shear walls have been significantly improved under horizontal loads. Compared with the pure frame structure, the horizontal bearing capacity, energy dissipation capacity and ductility of the frame structure with complete infilled wall have been improved, but the ductility of the frame with portal infilled wall has not been improved. The bearing capacity and energy dissipation capacity of reinforced concrete frame structure with the infill wall reinforced by the thin steel plate shear wall have been improved, but the ductility has been reduced. The reason is that the shear force in the reinforced concrete frame column is significantly increased due to the action of the tensile field in the plane of the thin steel plate.

关键词(KeyWords): 既有建筑;加固;钢筋混凝土框架;薄钢板剪力墙;抗震性能;延性;耗能能力
existing building;reinforcement;reinforced concrete frame;thin steel plate shear wall;seismic performance;ductility;energy dissipation capacity

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划课题(2015BAK09B01);; 国家创新研究群体科学基金(41521002);; 地质灾害防治与地质环境保护国家重点实验室开放基金(SKLGP2019K019)

作者(Author): 任小朋;高涌涛;
REN Xiaopeng;GAO Yongtao;Sichuan College of Architectural Technology;Environment & Civil Engineering Department, Chengdu University of Technology;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection;

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DOI: 10.19701/j.jzjg.2020.20.017

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