双钢板混凝土组合剪力墙抗震性能试验及数值模拟

Experimental study and numerical simulation on double skin composite walls

为了满足装配式建筑发展的需要,本文提出一种设置L型拉结件的新型双钢板-混凝土组合剪力墙。设计并制作了6片L型拉结件双钢板-混凝土组合剪力墙试件,对其进行了低周往复荷载作用下的拟静力试验。对试件的破坏现象、滞回性能、承载能力和延性进行了分析。试验结果表明:L型拉结件既可以有效地抑制两侧钢面板的局部屈曲,也可以增强对内填混凝土的约束作用,该新型组合剪力墙具有较高的承载力和一定的延性。基于开源软件OpenSees,建立了L型拉结件双钢板-混凝土组合剪力墙的纤维-分层壳模型,通过将其与传统的纤维模型和试验结果进行对比,验证了该模型的正确性,可为多腔体组合结构的数值模拟提供参考。

In order to meet the requirements of the development of assembled buildings,a new type of double-skin composite shear wall(DSCW)with L-shaped connectors was proposed.In this paper,6 high shear span ratio DSCWs were designed and tested under low cyclic reversed horizontal loads.The failure phenomena,hysteretic curve,bearing capacity and ductility of specimens are comprehensively analyzed.The results show that L-shaped connector can not only effectively enhance the confinement effect on core concrete,but also effectively limit the buckling of steel faceplate on both sides.This new type of shear wall has high bearing capacity and good ductility.Based on the open source finite element(FE)code OpenSees,a new fiber-multi layer shell model of DSCW with L-shaped connector is established.The model is validated through comparison with the experimental results,which can provide reference for the future research of multi-cavity combination component.