基于ABAQUS研究持力层厚度对浅地基承载力的影响

INFLUENCE OF BEARING LAYER THICKNESS ON BEARING CAPACITY OF SHALLOW FOUNDATION BASED ON ABAQUS

浅基础广泛应用于城市建设,因为其结构简单、造价成本低、便于施工、工期短等优点。但影响浅基础承载能力因素众多,传统的理论研究地基承载力有局限性,对影响因素没有全面地考虑。因此运用ABAQUS软件对基础破坏过程进行数值仿真,采用Mohr-Coulomb本构模型,并考虑初始地应力的影响,通过增量加载的有限元模拟方法,对几种主要因素对比分析,找出持力层对浅基础承载能力的影响规律,得到持力层承载力发挥的最佳厚度,为实际工程中浅基础设计提供参考。

Shallow Foundation is widely used in urban construction because of its simple structure,low cost,convenient construction and short construction period.However,there are many factors affecting the bearing capacity of Shallow Foundation,and the traditional theoretical research on the bearing capacity of foundation is limited.Therefore,the failure process of foundation is simulated by ABAQUS software,the Mohr-Coulomb constitutive model is adopted,and the effect of initial in-situ stress is considered,the influence rule of bearing layer on bearing capacity of shallow foundation is found out,and the optimum thickness of bearing layer is obtained.It provides a reference for the design of Shallow Foundation in practical engineering.