钢板剪力墙振动台试验等代模型研究
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1.甘肃省建设投资(控股)集团有限公司;2.甘肃建投科技研发有限公司;3.重庆大学土木工程学院

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基金项目:

住房和城乡建设部研究开发项目(2018-K9-072); 国家自然科学基金项目(51638002)


Equivalent model of steel plate shear walls in shaking table tests
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Affiliation:

1.Gansu Construction Investment(Holdings)Group Co., Ltd.;2.Gansu Construction Investment Technology Research Co., Ltd;3.School of Civil Engineering, Chongqing University

Fund Project:

Ministry of Housing and Urban-Rural Development Research Project (2018-K9-072), National Natural Science Foundation of China (No. 51638002)

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    摘要:

    为解决钢框架-钢板剪力墙结构振动台试验缩尺模型中的剪力墙钢板厚度过薄的问题,依据结构初始抗侧刚度或承载能力等效的原则,提出了中心支撑和I形钢板剪力墙两种等代模型,采用数值分析的方法,通过有限元软件ABAQUS建立精细化模型,对原型结构的钢板剪力墙和等代模型的刚度与承载力等抗震性能进行了对比分析。研究结果表明,两种等效替代模型均具有良好的耗能能力,能够在抗侧刚度或承载能力方面满足原型结构的等效设计要求,解决了原型结构中钢板厚度小的难题;中心支撑等效方案均可实现剪力墙的刚度或承载力单目标等效,而I形钢板剪力墙可以通过控制开洞口的尺寸,实现其刚度和承载力同时等效,为钢板剪力墙振动台试验模型的等效替代提供了参考建议。

    Abstract:

    In the shaking table test of steel frames-steel shear wall system, a problem is that thickness of the steel plate shear wall(SPSW) in the scale model is too small. In order to solve this problem, this paper proposes two equivalent models: concentrically braced frames and I shape of buckling restrained steel plate shear walls(BRSPSW) as a substitute for SPSW. Both of the two models are based on principles of equivalent strength and stiffness. Firstly, the finite element analysis program ABAQUS was used to establish the numerical model of prototype structure and equivalent models, and the lateral stiffness and ultimate strength of prototype SPSW and equivalent models were compared and analyzed. The results show the two equivalent substitution models both have good energy consumption capacity and can solve the problem of small thickness. In addition, the concentrically braced frames model can only make sure either lateral stiffness or ultimate load equivalent, but I shape of BRSPSW model can ensure both lateral stiffness and ultimate load equivalent, which provides some suggestions for the equivalent models of SPSW in shaking table tests.

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历史
  • 收稿日期:2020-08-24
  • 最后修改日期:2020-11-06
  • 录用日期:2021-01-04
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