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结合具体工程,采用三维有限元分析方法,对地面堆载作用下邻近桩基变形性状进行了模拟分析。分别研究了浅层土体弹性模量和桩身刚度对各排桩基侧向变形的影响,并将有限元计算结果与实测数据进行了比较。分析结果表明,浅层土体的弹性模量对被动桩基的变形影响更显著;被动桩能有效地控制堆载作用下邻近土体的变形,从而对附近建筑基础起到保护作用。分析结果能为类似工程的设计提供指导。
Combined with specific engineering, the three-dimensional finite element analysis method was used to simulate the deformation behavior of adjacent pile foundations under the ground loading. The effects of elastic modulus and pile stiffness of shallow soil on the lateral deformation of pile foundation are studied respectively. The calculated results are compared with the measured data. The analysis results show that the elastic modulus of shallow soil affects the deformation of passive pile foundation more significantly. Passive pile can effectively control the deformation of adjacent soil under the pile loading and thus protect the nearby building foundation. The results of the analysis can provide guidance for the design of similar projects.