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采用大型通用有限元软件,模拟分析了耦合荷载作用下桩筏基础力学特性。文章结合国华通辽风电场工程实例,通过对八种分析模式的模拟,分析了上覆土层、筏板刚度、土体承载作用以及土体模量对耦合荷载作用下桩筏基础的受力特性的影响,并研究了上覆土层、筏板刚度和土体模量对桩筏基础桩土分担比的影响。最后,根据有限元分析结果提出耦合荷载作用下桩筏基础设计的优化的一些理论参考依据。
The large-scale general finite element software is used to simulate and analyze the mechanical characteristics of piled raft foundation under coupling load. Combining with the project of Guohua Tongliao wind farm project, this paper analyzes the mechanical characteristics of piled raft foundation under the action of coupled load by simulating eight kinds of analysis modes, including the stiffness of overlying soil, raft, bearing capacity of soil and soil modulus The effects of overburden, raft stiffness and soil modulus on the pile-soil ratio of piled raft foundation were studied. Finally, some theoretical references for the optimization of piled raft foundation design under coupling loads are proposed based on the results of finite element analysis.