（陕西省现代建筑设计研究院， 西安 710048）

［摘要］以实际工程为背景，分析了平板式筏基受冲切承载力的计算方法。由于高层建筑的核心筒位置不再单一布置在筏板中间位置，PKPM结构计算软件的有限元计算结果并不一定完全符合实际情况，应依据核心筒位于筏板的具体位置来制定具体计算方法；基桩对筏板的冲切承载力应考虑抗震墙的竖向压力对板受冲切承载力的有利影响，不能完全参照有限元计算结果进行设计。设计人员应参照规范对不同情况进行计算校核，从而使理论计算能够正确地指导工程设计。

［关键词］平板式筏基； 冲切承载力； 有限元分析； 计算校核  

中图分类号： TU470 文献标识码： A文章编号：  1002-848X(2016)S1-0813-04

Analysis on punching shear strength calculation of slab foundation

Cheng Liang

(Shaanxi Modern Architecture Design & Research Institute， Xi′an 710048， China)

Abstract： Taking the actual project as the background, the calculation method of punching shear strength on slab foundation was analyzed. For the reason that the core tube position of high-rise buildings  is no longer simplex arranged on the middle position of the raft, the finite element calculation result of software PKPM does not fully conform to the actual situation, the specific calculation should be according to the specific location of the core tube; the beneficial effects of vertical pressure from seismic wall should be considered when calculating the punching shear strength capacity, it cannot be entirely referred to the results of finite element . The results should be calculated and checked by designers referring to the specification in different conditions, which makes the theoretical calculation correctly guide the engineering design.

Keywords： slab foundation; punching shear strength; finite element analysis; checking calculation

作者简介： 程亮，高级工程师，一级注册结构工程师，Email: cl_chengliang@sina.com。