对地基承载力特征值取值问题的探讨

Discussion on characteristic value determination of foundation bearing capacity

根据实例指出目前岩土工程勘察不提供承载力特征值最大值,特别是持力层的承载力特征值比最大值小的多,这样对天然地基沉降估算和复合地基沉降估算均产生影响,提出勘察报告应提供承载力特征值最大值,而在应用中根据变形要求确定地基的承载力特征值。

Based on actual practices, it is pointed out that the maximum characteristic value of bearing capacity is not provided in current geotechnical investigations, especially that the bearing capacity characteristic value of bearing layer is far less than the maximum value, which produces impacts on the natural foundation settlement evaluation and compound foundation settlement evaluation. It is proposed that the investi- gation report shall provide the maximum characteristic value of bearing capacity, while, in practical application, the bearing capacity characteris- tic value shall be ascertained as deformation requirements.