抗震混凝土剪力墙可替换自定心消能构件的研制

IF 6.4 1区 工程技术 Q1 ENGINEERING, CIVIL
Haozuo Wang , Xueping Li , Huanjun Jiang , Weiyuan Huang
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引用次数: 0

摘要

研制了一种适用于钢筋混凝土剪力墙底角的新型可替换自定心消能构件。介绍了RSEC的组成、制作方法和设计方法。通过对6个具有不同耗能比和自定心比的全尺寸试件进行循环加载试验,研究了RSEC的力学性能。实验结果表明,RSEC具有稳定的力学性能,更换前后构件的滞回行为基本一致。RSEC的消能能力随消能比的增大而增大,而增加自定心比可以有效减小构件的残余变形。建立并验证了可更换构件抗弯混凝土墙体的数值模型。利用该解析模型对不同可替换构件形式的剪力墙抗震性能进行了数值模拟比较。仿真结果表明,该方法不仅具有令人满意的强度和刚度,而且具有稳定的耗能能力和可靠的自定心能力。钢筋混凝土混凝土剪力墙为提高钢筋混凝土结构的抗震性能提供了一种很有前景的解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of replaceable self-centering energy-dissipation component for seismic resilient RC shear wall
A novel replaceable self-centering energy-dissipation component (RSEC), suitable for use in the bottom corners of reinforced concrete (RC) shear walls, is developed in this study. The constitution and fabrication of RSEC, and its design method are introduced. The mechanical behavior of RSEC is investigated through cyclic loading tests on six full-scale specimens with different energy-dissipation ratio and self-centering ratio. The experimental results show that RSEC has stable mechanical performance, and the hysteretic behavior of the components before and after replacement is basically the same. The energy dissipation capacity of RSEC increases with the increase of the energy-dissipation ratio while increasing the self-centering ratio can effectively reduce the residual deformation of the component. The numerical model for resilient RC wall with replaceable components is developed and validated. The seismic performance of RC shear walls with different types of replaceable components is compared by numerical simulation with the aid of this analytic model. The simulation results show that the proposed RSEC provides not only satisfactory strength and stiffness but also stable energy dissipation capacity and reliable self-centering capability for the structural wall. The RC shear wall with RSECs provides a promising solution for the improvement of seismic resilience of RC structures.
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来源期刊
Engineering Structures
Engineering Structures 工程技术-工程:土木
CiteScore
10.20
自引率
14.50%
发文量
1385
审稿时长
67 days
期刊介绍: Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.
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