地下室抗浮设计时柱下独立基础的抗冲切设计分析

Anti-cutting Design of Single Foundation under Column in the Anti-floating Design of Basement

独立基础加构造底板这种基础形式具有形式简单、受力明确、工程造价低等诸多优点,当地下室深度范围内存在有水位高于构造底板底面的地下水时,独立基础底板在不同情况的地下水浮力作用下,呈现出不同的受力状态。本文定性的分析了地下水位高于构造底板底面时,构造底板及独立基础的受力特性,为地下水位高度大于临界水位(h'w>hwcr)时,独立基础的抗冲切验算提供了力学分析的理论依据。

Single foundation plus structure baseboard as a basic form has the advantages of simple form, clear stress, low cost and so on. When there is ground water whose water level is higher than the bottom of structure baseboard within the depth of the basement, single foundation baseboard shows different stress state under different buoyancy of the ground water. This article makes qualitative analysis of the stress property of the baseboard and single foundation when the ground water level is higher than the structure baseboard bottom （h＇w〉hwcx）. It provides theoretical basis for the anti-cutting checking calculation of single foundation when the ground water level is higher than the critical level.