王萌, 郭勇超. 内嵌钢板及边缘框架相互作用对带连梁低屈服点钢板剪力墙结构受力性能的影响[J]. 工程力学, 2020, 37(9): 184-198. DOI: 10.6052/j.issn.1000-4750.2019.10.0640
引用本文: 王萌, 郭勇超. 内嵌钢板及边缘框架相互作用对带连梁低屈服点钢板剪力墙结构受力性能的影响[J]. 工程力学, 2020, 37(9): 184-198. DOI: 10.6052/j.issn.1000-4750.2019.10.0640
WANG Meng, GUO Yong-chao. STUDY ON PERFORMANCE OF COUPLED LOW YIELD POINT STEEL PLATE SHEAR WALLS AFFECTED BY THE INTERACTION OF INFILL PLATES AND BOUNDARY FRAME[J]. Engineering Mechanics, 2020, 37(9): 184-198. DOI: 10.6052/j.issn.1000-4750.2019.10.0640
Citation: WANG Meng, GUO Yong-chao. STUDY ON PERFORMANCE OF COUPLED LOW YIELD POINT STEEL PLATE SHEAR WALLS AFFECTED BY THE INTERACTION OF INFILL PLATES AND BOUNDARY FRAME[J]. Engineering Mechanics, 2020, 37(9): 184-198. DOI: 10.6052/j.issn.1000-4750.2019.10.0640

内嵌钢板及边缘框架相互作用对带连梁低屈服点钢板剪力墙结构受力性能的影响

STUDY ON PERFORMANCE OF COUPLED LOW YIELD POINT STEEL PLATE SHEAR WALLS AFFECTED BY THE INTERACTION OF INFILL PLATES AND BOUNDARY FRAME

  • 摘要: 为满足快速发展的高层建筑结构对抗震性能及空间灵活性的要求,将高耗能能力、高延性的低屈服点钢材与带连梁钢板剪力墙组合成新型带连梁低屈服点钢板剪力墙结构体系。采用有限元软件ABAQUS建立带连梁钢板剪力墙结构模型,结合国内外已有的典型试验结果验证数值方法的有效性。在此基础上,设计5个不同耦合度的低屈服点钢板剪力墙结构模型进行单调和循环加载,对比分析其损伤机制、承载性能及滞回耗能能力,探讨内嵌钢板与边缘框架的相互作用对结构及构件受力性能的影响,给出设计建议。结果表明:带连梁低屈服点钢板剪力墙结构内嵌钢板与边缘框架相互作用能够有效提高整体结构承载力、承载效率以及耗能能力。综合考虑材料利用率、承载能力及耗能能力,建议连梁耦合度控制在0.45以内。随着连梁耦合度的提高,边缘框架分担剪力多至60%,内部框架柱的轴力显著减小,连梁转角不断减小。因此,在带连梁低屈服点钢板剪力墙结构设计过程中应充分考虑内嵌钢板与边缘框架的相互作用,适当减小内嵌钢板设计厚度及边缘框架截面尺寸,提高材料利用率及设计经济性。同时,与纯框架抗侧性能相比,内嵌钢板与边缘框架的相互作用有效提高了边缘框架的初始抗侧刚度及承载力。

     

    Abstract: In order to satisfy the requirements on seismic behavior and spatial flexibility of high-rise buildings, based on the combination of high-performance materials and high-performance structures, the low yield point (LYP) steel plate shear wall structure with coupling beams was proposed. The finite element models of steel plate shear wall structures were established by ABAQUS, which were proved accurate through a comparison with the published tests. Using the verified numerical method, five coupled and uncoupled LYP steel plate shear wall structure models with different degrees of coupling were established. These models were subjected to static pushover loads and cyclic loads to compare their failure modes, lateral load carrying-capacities, hysteretic behaviors and energy dissipation performances. The influence of the interaction between infill plates and boundary frame on the mechanical properties of the structures and their members was discussed, and some suggestions were proposed for the design of coupled steel plate shear wall structures. The analysis results show that the interaction between infill plates and boundary frame can effectively improve the bearing capacity, bearing efficiency and energy dissipation capacity of the whole structure. Considering the material efficiency, bearing capacity and energy dissipation capacity, it is suggested that the coupling degree of the connecting beam should be controlled within 0.45. With the increase of coupling degree, the shear force shared by the boundary frame increases to 60%, the axial forces of the internal frame columns significantly decreases, and the rotation of coupling beams keeps decreasing. Therefore, the interaction between infill plates and boundary frame should be fully considered in the design of coupled shear wall structures, which is able to effectively reduce the design thickness of infill plates and the section size of boundary frame, and improves the material efficiency and design economy. At the same time, compared with the pure frame, the interaction between infill plates and boundary frame effectively improves the initial lateral stiffness and bearing capacity of the boundary frame.

     

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