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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

38卷

期数:

2021年01期

页码:

1-10

栏目:

出版日期:

2021-01-20

文章信息/Info

Title:

Experiment on Cyclic Shear Performance of Steel Plate Shear Wall with Different Buckling Restraints

文章编号:

1673-2049(2021)01-0001-10

作者:

周绪红^1,2,曹昀琦^1,2,谭继可^1,2,王宇航^1,2

(1. 重庆大学 土木工程学院,重庆 400045; 2. 重庆大学 山地城镇建设与新技术教育部重点实验室,重庆 400045)

Author(s):

ZHOU Xu-hong^1,2, CAO Yun-qi^1,2, TAN Ji-ke^1,2, WANG Yu-hang^1,2

(1. School of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education, Chongqing University, Chongqing 400045, China)

关键词:

冷弯薄壁型钢;  钢板剪力墙;  往复剪切性能;  滞回曲线;  耗能能力

Keywords:

cold-formed steel;  steel plate shear wall;  cyclic shear performance;  hysteresis curve;  energy dissipation capacity

分类号:

TU392.4

DOI:

10.19815/j.jace.2020.12049

文献标志码:

A

摘要:

为研究不同冷弯薄壁型钢屈曲约束形式的钢板剪力墙的往复剪切性能,剥离框架对钢板剪力墙结构抗侧力的贡献,单独对3个不同屈曲约束形式的钢板剪力墙结构试件和1个纯钢板剪力墙结构试件进行了拟静力试验研究,并通过试验与理论分析揭示了不同屈曲约束形式的钢板剪力墙在往复剪切作用下的力学性能与失效机理。结果表明:冷弯薄壁型钢对钢板剪力墙的面外变形具有较好的约束作用,显著提高了钢板剪力墙的耗能能力、延性和承载力; 竖向屈曲约束构造形式对钢板剪力墙的耗能能力提高效果最好,其次是水平约束形式,最差是45°斜向约束形式; 对于带45°斜向约束的试件而言,由于约束形式非轴向对称,其承载力在推、拉方向上表现出明显的差异,即在拉力带垂直于冷弯薄壁型钢约束时,其承载力更高。

Abstract:

In order to study the cyclic shear performance of steel plate shear wall(SPSW)with different cold-formed thin-walled steel buckling restraints, the contribution of frame to lateral resistance of steel plate shear wall structure was stripped, then the quasi-static tests on three SPSW specimens with different cold-formed steel buckling restraints and one SPSW specimen without buckling restraints were carried out. The mechanical properties and failure mechanism of steel plate shear walls with different buckling restraints under cyclic shear were revealed through experiments and theoretical analysis. The results show that the cold-formed thin-walled steel has a good restraint effect on the out-of-plane deformation of steel plate shear wall, and can significantly improve the energy dissipation capacity, ductility and bearing capacity of the SPSW. The vertical buckling restraints has the highest efficiency in improving the energy dissipation capacity and ductility of the SPSW, followed by the horizontal buckling restraints, and the worst is the 45° buckling restraints. In particular, for the SPSW specimen with 45° buckling restraints, since the restraint is not vertically symmetric, its bearing capacity shows significant differences in the push and pull directions, namely, when the tension belt is perpendicular to the cold-formed steel, its bearing capacity is higher.

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备注/Memo

备注/Memo:

收稿日期:2020-12-17
基金项目:国家自然科学基金项目(51822804); 霍英东教育基金会青年教师基金项目(171066)
作者简介:周绪红(1956-),男,湖南南县人,教授,博士研究生导师,工学博士,中国工程院院士,E-mail:zhouxuhong@126.com。
通信作者:王宇航(1985-),男,重庆市人,教授,博士研究生导师,工学博士,博士后,E-mail:wangyuhang@cqu.edu.cn。

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更新日期/Last Update: 2021-01-20