Experimental study on seismic behavior of low-aspect-ratio concrete filled funnel-shaped profiled steel sheet composite shear walls

被引：0
|
作者：
Xu L. [1 ]
Guo Z. [1 ,2 ]
Guo Y. [1 ]
Xie X. [1 ]
机构：
[1] College of Civil Engineering, Huaqiao University, Xiamen
[2] Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷 / 02期
关键词：
digital image correlation (DIC); funnel-shaped profiled steel sheet; low-aspect-ratio composite shear wall; low-cyclic reversed loading test; seismic behavior; tension field action;
D O I：
10.14006/j.jzjgxb.2021.0467
中图分类号：
学科分类号：
摘要：
A concrete-filled funnel-shaped profiled steel sheet composite shear wall (CFFPSCW) structure was proposed considering superior connector performance of funnel-shaped ribs and the ability to delay the buckling of steel sheets. In order to investigate influence of axial compression ratio, concrete strength, steel sheet thickness, additional configurations (tapping screws and filling rib seam), test on six specimens with a shear span ratio of 1. 0 were carried out under cyclic loading. Non-contact 3D-DIC (3D-digital image correlation) was used to capture the full-field strain variation of the steel sheet during the loading process. The test results indicate that the funnel-shaped ribs behave as shear connectors, which can greatly enhance the cooperative performance between the steel sheet and the infill concrete. Diagonal tension field action is formed in the direction of principal tensile strain after steel sheet local buckling, and each sheet strips yield at the peak load. All the squat CFFPSCW specimens exhibit stable hysteretic performance and satisfactory deformation capacity. The ultimate drift levels are in the range of 1/ 53 to 1/ 38. No further connection strengthening is required between the steel sheet and infill concrete. Based on the tension field action model of the steel plate and the softened strut-and-tie model of infilled concrete, a calculation formula of the shear capacity of the CFFPSCW was proposed, and the calculated values were in good agreement with the experimental values. © 2023 Science Press. All rights reserved.
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页码：109 / 118
页数：9
相关论文
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