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风力发电作为发展最快的新型能源之一,得到越来越多的关注,耦合荷载作用下风机基础的优化设计成为一个重要的问题。首先对商业有限元的计算精度以及对耦合荷载的模拟能力进行验证,在该基础上对国华通辽风电场梁板式桩筏基础进行模拟分析,重点讨论在耦合荷载作用下梁板式基础管桩、肋梁和环梁的受力和变形特性,并将有限元计算得出的基础构件内力与规范设计方法计算结果进行对比分析。与此同时,分析风机基础桩土分担比,研究耦合荷载作用下土体的承载作用。计算结果可为实际工程的设计提供参考依据。
As one of the fastest growing new types of energy sources, wind power has drawn more and more attention. The optimal design of wind turbine foundation under coupling load has become an important issue. Firstly, the calculation accuracy of commercial finite element method and the simulation of coupling load are verified. Based on the simulation, the beam-plate piled raft foundation of Guohua Tongliao wind farm is simulated and analyzed. The stress distribution of the beam-plate foundation pipe pile under coupling load, The stress and deformation characteristics of the rib beam and the ring beam, and comparative analysis of the calculated results of the internal force of the basic component and the standard design method calculated by the finite element method. In the meantime, the contribution ratio of pile foundation soil to turbine foundation is analyzed to study the bearing effect of soil under coupled load. The result of the calculation can provide a reference for the design of the actual project.