深基坑两种常用计算方法比较

Comparison of Two Common Calculation Methods of Deep Foundation Pits

以南通市某高架桥主墩承台深基坑施工为例,在确定施工总体思路和施工顺序的基础上,运用理正深基坑和MIDAS/Civil软件分别建立力学模型,依据施工过程确定计算工况,对钢板桩单元、围檩与支撑构件的受力状况进行计算,验算了模型的受力情况及稳定性,并对两者计算结果进行对比,并分析两种计算方法的适用条件和优劣。

Taking the construction of a deep foundation pit for the base slab of main pier for a viaduct as an example,and on the basis of determining the overall construction thinking and the construction sequence,the lizheng deep foundation pit software and Midas/Civil software are used to separately establish the mechanical models.Based on the construction process,the construction situation is determined and calculated,the stress statuses of steel sheet pile,purlin and supporting member are calculated,and the stress situation and stability of model are checked.The calculation results of two models are compared.The application conditions,advantages and disadvantages of two calculation methods are analyzed.