论文部分内容阅读
预应力无梁楼盖广泛应用于地下车库,当其上覆土较厚时,采用上反柱帽可达到增大室内空间和简洁美观的目的。而上反柱帽预应力无梁楼盖如何设计计算,却未有相关报道。本文利用SAP2000对上反柱帽和传统柱帽的预应力无梁楼盖分别进行了分析对比,结果表明:在均布荷载作用下,两种柱帽的弯矩和挠度基本相同;采用上反柱帽后预应力筋的矢高有较大提高,但其预应力效应的变化并不显著。
Prestressed non-beam floor is widely used in underground garage, when the overlying soil is thick, the use of anti-column cap can be achieved to increase indoor space and simple and beautiful purpose. However, there is no relevant report on how to design and calculate the prestressed non-beam floor of the inverted cap. In this paper, SAP2000 is used to analyze and compare the prestressed girderless floor with the upper anti-column cap and the traditional column cap respectively. The results show that under the uniform load, the bending moments and deflections of the two column cap are basically the same. After the column cap, the sag of the prestressing tendons is greatly increased, but the change of the prestressing effect is not significant.