地基承载力综合确定方法的探讨

Discussions of Bearing Capacity Evaluation Methods for Foundation Soils

在岩土工程勘察中,需要采用多种勘察方法和手段获得地基承载力。土体的非均质性,以及取样扰动、室内试验和现场原位测试操作等的人为误差,使得通过规范查表或理论计算获得的承载力值差异较大,通过综合分析确定地基承载力取值。分析室内土工试验和原位测试方法获得的指标对地基承载力取值的影响,并进行可靠性评价,为地基基础设计提供经济合理的保证,对岩土工程勘察中承载力的取值提供借鉴。

In geotechnical engineering investigation,it is necessary to use a variety of investigation means and methods to obtain the foundation bearing capacity.Because of the heterogeneity of soil,sampling disturbance,indoor test and field in-situ test operations,the bearing capacity values obtained by the standard table or theoretical calculation might usually be significantly different.The bearing capacity values for the foundation soils should be determined by comprehensive analyses.This paper analyzes the influence of the indices obtained by the indoor geotechnical test and the in-situ test methods on the bearing capacity of the foundation soils,and evaluates the reliability,in order to provide an economic and reasonable warrantee for the design and construction of the foundation and a reference for the bearing capacity in the geotechnical investigation.