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在软土地基上建造风力发电机,首先要解决的问题就是降低基础造价。筒状基础具有结构简单、施工方便、造价低等特点,可代替传统的桩基,降低造价。本文利用MSC.Marc有限元软件对不同埋深条件下软土地基上的筒状基础进行三维有限元分析,并将有限元分析得到的抗弯承载力与通过单管塔规范计算公式得到的结果进行了比较,得出单管塔规范所采用的简化计算方法是可行的,通过对16m埋深条件下的桩的侧向土压力和侧摩阻力的有限元分析,表明简化方法采用的基本假定和受力机制是合理的。
The first problem to be solved when building wind turbines on soft ground is to reduce the basic cost. The tubular base has the advantages of simple structure, convenient construction and low cost, which can replace the traditional pile foundation and reduce the cost. In this paper, the finite element software MSC.Marc is used to analyze the cylindrical foundation on soft soil foundation under different depths by means of three-dimensional finite element method. The results obtained by finite element analysis of flexural capacity and single-pipe tower standard formula The simplified calculation method adopted in the single-tube tower code is feasible. Through the finite element analysis of the lateral earth pressure and lateral friction of the piles under the depth of 16m, the basic assumption adopted by the simplified method is shown And the force mechanism is reasonable.