结合工程实例，根据工程特点和桩基支护特点，用MSC.Marc有限元软件对昆明某软土深基坑开挖与支护过程进行全过程三维数值模拟。得到基坑开挖全过程中的应力与变形的变化规律，同时得到在基坑开挖时的最不利位置，为基坑支护和基坑监测提供可参考依据。%Combined with the practical engineering, and according to the characteristics of the engineering and the pile foundation support, the whole process of a soft soil deep foundation excavation and supporting in Kunming is numerical simulated by using finite element software MSC.Marc, thus getting the principle of the tress and deformation change in the excavation process, and at the same time, getting the most unfavorable position during the excavation, providing reference basis for the foundation pit supporting and foundation pit monitoring.
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