四边连接组合钢板剪力墙简化模型

在纯钢板墙条带模型的基础上,提出一种适用于组合墙计算的等效拉-压杆模型.拉杆考虑钢板的受拉条带区的作用,组合压杆考虑钢板在混凝土板约束作用下的受压条带区的作用.对初始缺陷和压杆的刚度系数进行参数分析,并推导理论计算公式,由计算公式和试验数据分别确立模型的骨架曲线和滞回规则.将提出的简化计算模型用于自编的FORTRAN程序中,得到简化模型的计算滞回曲线.对单跨单层的组合墙试验进行滞回曲线的计算,计算结果与实测数据符合良好,说明提出的简化计算模型以及推导的计算公式适用于组合钢板剪力墙.

A Simplified Model for Composite Steel Plate Shear Walls

Based on tension strip model for steel plate shear walls,a model composed of equivalent tension strips and combination compression strips was proposed to simulate the composite steel plate shear wall. In this model,the tension action was represented by a series of inclined tension strips and the compression action was represented by a series of inclined assembled compression strips considering the restraint by concrete slabs. With the help of parametric analysis on the initial defection and stiffness coefficient of the combination compression strips,theoretical formulas were established. Based on the formulas and experiment data,skeleton curves and hysteretic rules for the model were established respectively,and the model was then programmed into the software FORTRAN for its verification it with the test results. Analytical results for one span one storey composite wall specimens agree very well with experiment output,showing that the proposed model for composite steel plate shear walls under cyclic loading is of very high accuracy.