管肋开孔双钢板剪力墙滞回性能研究
Research on Hysteretic Performance of Perforated Double Steel Plate Shear Walls with Tube Stiffeners
为改善钢板剪力墙滞回性能,使其具备稳定耗能能力,本文提出了一种管肋开孔双钢板剪力墙。利用ABAQUS有限元软件建立了包括管肋开孔双钢板剪力墙在内的7种不同类型钢板剪力墙的有限元数值模型,对其破坏模式、滞回性能、承载力、刚度和耗能能力等方面进行了对比分析。结果表明:在墙体钢板横截面总厚度一定的情况下,管肋开孔双钢板剪力墙具有较高的承载能力和良好的滞回性能;钢管作为板间加劲肋,通过合理布置对两侧的墙面板起到较好屈曲约束的效果,平面外变形较小,同时减小了由于墙面板预开孔洞造成的承载力、强度和刚度的损失;使用圆形钢管或方形钢管作为加劲肋对墙体承载能力影响较小,而使用方形钢管具有较好的屈曲约束效果和耗能能力,故使用方形钢管作为管肋开孔双钢板剪力墙的加劲肋时综合性能最优。
To enhance the hysteresis behavior of steel plate shear walls (SPSWs) and enable them to effectively dissipate energy, a novel design incorporating perforated double steel plates with tube stiffeners is introduced. Finite element models of seven distinct SPSW configurations, including the proposed design, were developed using ABAQUS software. Comparative assessments were conducted to evaluate the failure modes, hysteretic performance, structural strength, stiffness, and energy dissipation capabilities of the various SPSW configurations. The findings indicate that the perforated double steel plate shear wall with tube stiffeners exhibits a high load carrying capacity and favorable hysteretic performance compared to a wall with the same total thickness of steel plate. The incorporation of steel tubes as stiffeners between the wall panels enhances buckling restraint and reduces out-of-plane deformation through strategic placement. Additionally, this design approach mitigates the loss of load-carrying capacity, strength, and stiffness resulting from pre-perforation in the wall panels. The utilization of square or round steel tubes as stiffening elements minimally impacts the load-carrying capacity of the wall. However, square steel tubes exhibit superior buckling restraint and energy dissipation capabilities. Optimal performance is achieved when employing square steel tubes as stiffeners in perforated double steel plate shear walls.
开孔双钢板剪力墙 / 钢管加劲肋 / 有限元分析 / 滞回性能 / 耗能能力
perforated double steel plate shear wall / tube stiffener / finite element analysis / hysteretic performance / energy dissipation capacity
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国家自然科学基金(51878522)
湖北省住建厅科技计划项目([2023]1656号-004)
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