Shear-displacement diagram of steel plate shear walls with pre-compression from adjacent frame columns
Shear-displacement diagram of steel plate shear walls with pre-compression from adjacent frame columns
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相邻框架柱预压钢板剪力墙剪切位移图
DOI：
10.1002/tal.1585
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发表时间：
--
影响因子：
2.4
通讯作者：
Nawawi Chouw
中科院分区：
文献类型：
--
作者：
吕杨;李玲;吴迪;陈宇;李忠献;Nawawi Chouw
提出了考虑相邻框架柱预压的无加筋钢板剪力墙解析模型，并进行了试验验证。首先，提出了边界柱与填充钢板之间重力荷载的分布和传递。其次，得到压剪作用下SPSW的剪切位移图，并进一步考虑整体弯曲变形，得到SPSW在压剪弯曲作用下的剪切位移图。第三，给出了填充钢板在弹性屈曲状态下的承载能力和变形、I区和III区屈服、II区屈服和边界框架屈服。最后，对柱顶不同轴力作用下的4座单层单凸口无加筋SPSWs进行了循环加载试验，验证了所提分析模型的有效性。将试件的剪切位移关系、抗剪能力和包络曲线与预测值进行比较。结果表明，所建立的解析模型能够合理预测由于边界柱处存在轴向荷载而导致的单轴梁抗剪承载力和刚度下降。
An analytical model of the unstiffened steel plate shear wall (SPSW) considering precompression from the adjacent frame columns is proposed and experimentally verified. First, the distribution and transferring of the gravity loads between boundary columns and the infill steel plate was proposed. Second, the shear‐displacement diagram of the SPSW under compression–shear interaction was obtained, and to further consider the global bending deformation, the shear‐displacement diagram of the SPSW under compression–shear–bending interaction was obtained. Third, the load‐carrying capacities and deformations at the state of elastic buckling of the infill steel plate, the yield of Zones I and III, the yield of Zone II, and the yield of the boundary frame were presented. Finally, cyclic loading test on four scaled one story single bay unstiffened SPSWs under different axial forces at the top of the columns was carried out to verify the proposed analytical model. Shear‐displacement relationship, shear capacity, and envelope curves of the specimens were compared with the predicted values. Results indicate that the proposed analytical model can reasonably predict the decrease of the shear load capacity and stiffness of the SPSWs due to the existence of the axial load at the boundary columns.