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被动控制装置用于结构的抗震能量耗散,以减少主要结构构件的破坏。近来研制的一种新型装置——剪力墙屈曲装置(YSPD),可利用薄壁构件的剪切变形来吸收能量。YSPD由薄钢板和方钢管(SHS)焊接而成,其性能由薄膜板、SHS包覆情况与边界条件之间的复杂交互关系决定。已有试验结果表明,循环荷载作用下,YSPD的荷载-位移响应表现出非线性捏缩迟滞特性。并给出预测滞后响应的数学模型,模型使用的参数简单易得,如YSPD的几何特性和材料性能。利用有限元模型结果对给出的模型进行调整,以助于建立YSPD加固框架的足尺模型。
Passive controls are used to dissipate the seismic energy of the structure to reduce damage to the main structural members. Recently developed a new device - the shear wall buckling device (YSPD), thin-walled components can be used to absorb the shear deformation. YSPD is welded from sheet steel and square steel pipe (SHS) and its performance is determined by the complex interaction between the film plate, SHS coating and the boundary conditions. The experimental results show that under cyclic loading, the load-displacement response of YSPD shows nonlinear characteristics of the squeezing hysteresis. The mathematical model of predicting hysteresis response is given. The parameters used in the model are easy to obtain, such as the geometric properties of YSPD and the material properties. The finite element model is used to adjust the model to help establish the full scale model of YSPD reinforced frame.