内置钢板与内置钢桁架混凝土组合剪力墙抗震性能对比研究

通过对2组内置钢板混凝土组合剪力墙和内置钢桁架混凝土组合剪力墙拟静力试验的模拟，确定计算模型的建立方法，并选取2片相同含钢率的内置钢板混凝土组合剪力墙和内置钢桁架混凝土组合剪力墙模型进行侧向低周反复荷载作用下的计算分析，对比了2片剪力墙模型的承载力、刚度及其退化过程、延性、耗能及滞回特性，并选取实际工程为算例，对采用两种组合剪力墙的整体结构从抗侧刚度、破坏模式、层间位移角、位移时程及塑性发展等方面进行了抗震性能的对比。研究结果表明：对于构件层次，随着墙体高宽比的增大，内置钢板混凝土组合剪力墙的承载力、耗能能力及延性逐渐优于内置钢桁架混凝土组合剪力墙；对于结构层次，当墙体高宽比较大时，采用内置钢板混凝土组合剪力墙结构的抗震性能要优于采用内置钢桁架混凝土组合剪力墙的结构。

Comparative study on seismic behavior of RC composite shear wall with steel plate and steel truss

Numerical models of two steel-concrete composite shear walls, one with steel truss and the other with steel plate were verified firstly. Then the two shear walls with the same steel ratio were analyzed under cyclic load. The load carrying capacity, stiffness, degradation of strength and stiffness, ductility, energy dissipation characteristics and hysteresis characteristics of the two walls were compared. The seismic performance of structures with two steel-concrete composite shear walls were compared. The result proves that, at component level, with the increase of the aspect ratio, the bearing capacity, ductility and energy-dissipating capacity of steel plate RC shear wall gradually become stronger than RC shear wall with steel truss in the case of same steel ratio. At the structure level, when the aspect ratio is big, the seismic performance of structure with steel plate reinforced concrete shear wall is better than the structure with steel truss RC shear wall.