中文摘要：

为了研究组合扁梁楼盖在水平荷载作用下的承载性能和有效宽度,采用有限元分析软件建立了钢—混凝土组合扁梁整体楼盖三维实体有限元模型,并进行了相应的计算分析.计算结果表明：钢—混凝土组合扁梁楼盖具有较大的水平刚度和较好的空间作用,组合扁梁楼盖在水平荷载情况下有效宽度较竖向荷载作用时小.建议进行组合扁梁整体楼盖试验,进一步研究其有效宽度取值.

英文摘要：

A solid 3D FE model of monolithic steel-concrete composite slim floor is established by the ANSYS software package in the present paper. The bearing properties of the FE model under different distribution of horizontal loads are analyzed and compared. The effective widths of both positive moment region and negative moment region of composite slim floor are calculated. The following conclusions can be drawn from the results： （a） the composite slim floor has a good membrane behavior under horizontal loads; （b） the effective width of positive moment under horizontal loads is significantly smaller than that under vertical uniformly distributed loads. Additional integral test is suggested to investigate the load ing capacity and determine the effective width of monolithic steel-concrete slim floor.