摩擦-防屈曲钢板墙复合减震构件简化计算模型及应用  

Calculation model and application of buckling-restrained steel plate wall combined with friction damper

作　　者：胡大柱 占昆旺 吴志平 赵娟 徐春丽 HU Dazhu;ZHAN Kunwang;WU Zhiping;ZHAO Juan;XU Chunli(School of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China;Shanghai Baoye Group Co.,Ltd.,Shanghai 200941,China)

机构地区：[1]上海应用技术大学城市建设与安全工程学院,上海201418 [2]上海宝冶集团有限公司,上海200941

出　　处：《地震工程与工程振动》2024年第6期72-83,共12页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金青年基金项目(51408361)。

摘　　要：为解决防屈曲钢板墙屈服位移大,在小变形阶段仅提供刚度和承载力而无法消能的缺点,将墙式摩擦阻尼器与防屈曲钢板墙在厚度方向进行并联布置,构成新型摩擦-防屈曲钢板墙复合减震构件。小变形阶段,复合构件中的摩擦阻尼器滑动消能,随着变形增大,防屈曲钢板墙进入屈服状态,摩擦阻尼器和防屈曲钢板墙共同消能。基于防屈曲钢板墙、摩擦阻尼器以及摩擦-防屈曲钢板墙复合构件的试验结果以及复合构件构造特点,建立了弹簧束简化计算模型,用于模拟摩擦-防屈曲钢板墙复合减震构件的力学性能。简化模型的计算结果与试验结果基本吻合,可替代实体有限元分析,且可在结构整体分析中直接应用。基于简化模型,通过参数分析的方法,以最优附加阻尼比为控制指标,探讨了复合构件中摩擦阻尼器滑动摩擦力与防屈曲钢板墙屈服承载力的合理比值(滑屈比)、构件高宽比建议值。参数分析结果表明,高宽比建议小于1.5,而滑屈比合理比值范围为0.07~0.10。For the large yield displacement of the buckling-restrained steel plate wall(BRW),only stiffness and bearing capacity can be provided in the small deformation stage.BRW can not dissipate energy in the small deformation stage.To solve this problem,the wall type friction damper(FD)and buckling-restrained steel plate wall are arranged in parallel in the thickness direction to form a new type of buckling-restrained steel plate wall combined with friction damper(FD-BRW).In the small deformation stage,the friction damper in the composite member slides to dissipate energy.As the deformation increases,the buckling-restrained steel plate wall yields,and the friction damper and the buckling-restrained steel plate wall dissipate energy together.Based on the test results of BRW,FD and FD-BRW,a simplified calculation model was established to simulate the mechanical properties of FD-BRW.The simplified calculation model consists of three springs.The calculation results of the simplified model were basically consistent with the experimental results,which can replace the solid finite element analysis and can be directly applied in the overall analysis of the structure.Based on the simplified model,taking the optimal additional damping as the control index,the reasonable ratio of the sliding friction force of friction damper to the yield bearing capacity of the buckling-restrained steel plate wall(slip-yield ratio)and the recommended value of the height-width ratio of the member were discussed through parametric analysis.The results showed that the height-width ratio is recommended to be less than 1.5,and the reasonable range of slip-yield ratio is 0.07~0.10.

关 键 词：摩擦-防屈曲钢板墙复合减震构件 摩擦阻尼器 防屈曲钢板墙 弹簧模型 参数分析 

分 类 号：TU392.4[建筑科学—结构工程]