修正剑桥模型在基坑开挖分析中的应用

分析了修正剑桥模型的应力应变关系，并以该模型为基础，引进接触单元和杆单元，用有限元程序模拟工程实例的开挖过程和开挖要素，模拟计算了不同开挖阶段的地表沉降、基坑隆起和水平位移，根据计算结果与实际情况的比较反证了在软粘土中应用该模型是适合的，同时，对基坑开挖施工、地表沉降预计等作了定性的分析。

Application of Modified Cambridge Model in Foundation Excavation

The relation of stress and stain of modified Cambridge model was analyzed by employing interface element and staff element, the excavation process and constituents of real project were simulated based on this model. With the help of numerical simulation, the surface settlement, the apophysis on the bottom of foundation and the level displacement were calculated and analyzed by using FEM program. The adaptation was proved in the soft viscosoil based on the result of computation and practice situation. Finally, the qualitative conclusions of the excavation and subsidence prediction were obtained by analyzing the calculation results.