国华通辽风电场三期工程梁板式桩筏基础性状数值分析

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。

Numerical analysis of piled beam-raft foundation of third-phrase project of Guohua Tongliao wind farms

The wind power generation,as one of the fastest-growing new energy,gets more and more attentions.The optimizational design of wind turbine foundations under coupled loads becomes an important issue.In this paper,the accuracy and the ability of a finite element method to simulate the load coupled effect are verified through comparisons with published results.Then a piled beam-raft foundation of Guohua Tongliao wind farms is analyzed using finite element method.The research mainly focuses on the stress and deformation characteristics of the pipe piles,rib beams and the ring beam of the foundation under coupled loads.The internal forces of them are compared with those from design.At the same time,this paper analyzes the pile-soil-sharing ratio of the wind turbine foundation and investigates the bearing role of soil under coupled load.The results provide a reference for the actual engineering design.