循环载荷作用下两类楼板抗震性能的非线性有限元分析

Nonlinear finite element analysis on seismic behavior of two kinds of slabs under cyclic load

为比较组合楼板和普通混凝土楼板的抗震性能,采用非线性有限元分析方法研究它们在循环载荷作用下的受力行为,并由此得到两类楼板的滞回曲线、骨架曲线及应力应变分布规律.计算结果表明,采用可靠构造措施的压型钢板与混凝土组合作用明显,在不失较高承载力的同时,组合楼板仍具有良好的抗震性能.将计算结果与试验数据相比较,验证该数值分析方法的有效性.

To compare seismic behavior of deck-concrete composite slabs and concrete slabs, their mechanical behavior under cyclic load is analyzed by nonlinear finite element method. The hysteresis loop curve, skeleton curve and distribution of stress and strain are obtained. The analytical results indicate that the deck-concrete composite slabs have good seismic performances with the reliable construction measures and good seismic behavior while not losing high load bearing capacity. The validity of the model is verified by comparing the calculation results with the experimental data.