混凝土空心楼盖实心区域宽度对挠度的影响研究

Analysis of the impact of solid region width on the deflection of the concrete hollow flat slab

为了得到混凝土空心楼盖实心区域宽度的最佳取值范围,应用有限元分析软件ANSYS对竖向均布荷载作用下的混凝土空心楼盖进行模拟.对两组模型弹塑性计算所得的竖向位移进行对比,分析了混凝土空心楼盖的受力规律和变形特征,得出实心区域与空心管同向时宽度宜取板跨的1/13～1/14,与空心管垂直时宽度宜取板跨的1/14～1/18.

To get the best width range of concrete hollow flat slab＇s solid region, the concrete hollow flat slab is simulated by using the finite element analysis software ANSYS in the effect of vertical uniformly distributed load. Comparing the vertical displacement calculated from the elastoplastic calculation of the two sets of model, the force law and deformation characteristics of concrete hollow flat slab are analyzed, the conclusion is summed up that when solid region and the hollow tube in the same direction, the better width of solid region is between 1/13 to 1/14 of the slab span; when they in the vertical direction, the better width is between 1/14 to 1/18 of the slab span.