Experimental study on seismic performance of composite shear walls with end columns

IF 4 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Constructional Steel Research Pub Date : 2024-10-19 DOI:10.1016/j.jcsr.2024.109093

Guirui Lin , Kaize Ma , Guohua Xing , Jiayi Cheng , Xiwang Cao

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Abstract

Three new partially encased composite shear walls (NPECSWs) were designed with the thickness of the main steel members and the quantity of the stiffening ribs as parameters, and pseudostatic tests were carried out. The tests revealed that all the specimens exhibited compression–bending damage, which were consistent with the digital image correlation analysis results. Compared with increasing the number of stiffening ribs, increasing the thickness of the main steel members has a greater effect on the energy dissipation, viscous damping coefficient, ductility, and shear resistance. Increasing the number of stiffening ribs makes the effect of reducing the degrading stiffness more obvious. The calculation formulas for the shear resistance were established, and the errors were within 10 %. Based on the fourfold line skeleton model and unloading stiffness, a restoring force model was established. The finite element analyses were carried out for in-depth analysis. It indicated that increasing the thickness of the main steel members could reduce the yield range, and increasing the number of stiffening ribs makes the stress distribution more uniform after damage.

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带端柱的复合剪力墙抗震性能试验研究

以主钢构件的厚度和加劲肋的数量为参数，设计了三种新型部分包覆复合剪力墙（NPECSW），并进行了伪静力试验。试验结果表明，所有试件都出现了压缩弯曲破坏，这与数字图像相关分析结果一致。与增加加劲肋数量相比，增加主钢构件厚度对能量耗散、粘滞阻尼系数、延展性和抗剪性能的影响更大。增加加劲肋的数量可使降低退化刚度的效果更加明显。建立了抗剪计算公式，误差在 10% 以内。根据四倍线骨架模型和卸载刚度，建立了恢复力模型。进行了有限元分析以深入分析。结果表明，增加主钢构件的厚度可减小屈服范围，增加加劲肋的数量可使破坏后的应力分布更加均匀。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Constructional Steel Research 工程技术-工程：土木

CiteScore

7.90

自引率

19.50%

发文量

550

审稿时长

46 days

期刊介绍： The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.