三种不同设计理念的钢板剪力墙抗震性能分析

Seismic Behavior Analysis of Steel Plate Shear Walls With Three Different Design Concepts

为充分了解在相同的水平地震设计荷载作用下,按三种不同抗震设计理念设计的钢板剪力墙的抗震特点,模拟了6层低屈服点钢板剪力墙、普通钢板剪力墙以及薄钢板剪力墙在顶点加载和倒三角加载两种循环加载方式作用下的抗震性能,并对结构的滞回性能、耗散系数、承载力、抗侧刚度、应力云图等进行了对比分析。结果表明:在相同加载方式下,低屈服点钢板剪力墙滞回环比较饱满,能量耗散系数更大,且增加的速率比其他两种结构大,说明低屈服点钢板剪力墙的抗震耗能更好。

In order to fully investigate the structural seismic characteristics of steel plate shear walls with three different design concepts under the same horizontal seismic loading, the different seismic behaviors of six-story low-yield-point steel plate shear wall, ordinary steel plate shear wall and thin steel plate shear wall are simulated under the two kinds of cyclic loading modes of peak displacement loading and the inverted triangle loading. The hysteretic performance, energy dissipation coefficient, bearing capacity, lateral stiffness and the stress nephogram of three structures are compared and analyzed. The results show that the hysteretic loop of low-yield-point steel plate shear wall is plump, and energy dissipation coefficient and its increasing rate are higher than other two kinds of structure under the same horizontal loading, which demonstrates that the low-yield-point steel plate shear wall has good seismic energy dissipation capacity.