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Experimental study and numerical simulation on seismic behavior of double-skin composite wall
Journal of Constructional Steel Research ( IF 4.1 ) Pub Date : 2021-09-14 , DOI: 10.1016/j.jcsr.2021.106935
Lihua Chen 1, 2 , Song Bai 1, 2 , Lujie Zhou 1, 2 , An Zhou 1, 2
Affiliation  

An innovative double-skin composite wall (DSCW) with L-shaped connectors which can be quickly assembled and simply constructed was proposed. Taking the boundary column length and shear span ratio of the wall as parameters, the failure mode and seismic behavior of the composite shear wall were studied through quasi-static tests of four specimens. Based on the open-source software, OpenSees, the fiber model of the DSCW with L-shaped connectors was established, and the parametric study applied for the fiber model. The common failure phenomenon of each specimen lied in the steel plate tearing at the bottom of the end column, the concrete crushing at the tearing place, and local bulging at the bottom of the steel plate. Test results showed this type of composite shear wall had excellent bearing capacity and ductility, and the peak load range is 734.2 kN–991.3 kN, and the ductility coefficient is between 3.07 and 4.70. According to the analysis of the test results, the deformation performance and bearing capacity of the specimen were affected by both the length and the length -thickness ratio of the boundary column; the change in the shear-span ratio significantly affected the stiffness of the specimen in the elastic stage. With the comparison of the simulation results and the test data, the difference between the peak loads is less than 6%, which verifies the correctness of the model. Thus, taking the specimen model as the benchmark model, the parameters of the model were analyzed, as the supplementary verification of test results.



中文翻译:

双层复合墙体抗震性​​能试验研究与数值模拟

提出了一种具有 L 形连接器的创新双层复合墙 (DSCW),可以快速组装和简单构建。以墙体的边界柱长度和剪跨比为参数,通过四个试件的准静态试验研究了组合剪力墙的破坏模式和抗震性能。基于开源软件OpenSees,建立了带L形连接器的DSCW光纤模型,并对光纤模型进行了参数化研究。各试件常见的破坏现象为端柱底部钢板撕裂、撕裂处混凝土破碎、钢板底部局部鼓包。试验结果表明,该类复合剪力墙具有优良的承载力和延性,峰值荷载范围为734。2 kN~991.3 kN,延性系数在3.07~4.70之间。根据试验结果分析,试件的变形性能和承载力受边界柱长度和长厚比的影响;剪跨比的变化显着影响试件在弹性阶段的刚度。通过仿真结果与试验数据对比,峰值载荷差异小于6%,验证了模型的正确性。因此,以试件模型为基准模型,对模型参数进行分析,作为试验结果的补充验证。试件的变形性能和承载力受边界柱长度和长厚比的影响;剪跨比的变化显着影响试件在弹性阶段的刚度。通过仿真结果与试验数据对比,峰值载荷差异小于6%,验证了模型的正确性。因此,以试件模型为基准模型,对模型参数进行分析,作为试验结果的补充验证。试件的变形性能和承载力受边界柱长度和长厚比的影响;剪跨比的变化显着影响试件在弹性阶段的刚度。通过仿真结果与试验数据对比,峰值载荷差异小于6%,验证了模型的正确性。因此,以试件模型为基准模型,对模型参数进行分析,作为试验结果的补充验证。峰值载荷差小于6%,验证了模型的正确性。因此,以试件模型为基准模型,对模型参数进行分析,作为试验结果的补充验证。峰值载荷差小于6%,验证了模型的正确性。因此,以试件模型为基准模型,对模型参数进行分析,作为试验结果的补充验证。

更新日期:2021-09-14
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