风机基础环节点抗弯承载力研究

Study on Bending Bearing Behavior of Connection of Wind Turbine Foundation and Embedded Ring

采用ABAQUS有限元分析软件建立风机结构的三维有限元模型,进行抗弯性能数值模拟,计算结果与工程实际对比较为吻合,研究结果表明:基础下法兰附近混凝土应力沿圆周向呈一定规律分布;基础环下法兰附近的混凝土最容易发生应力集中,容易发生结构损伤破坏,基础表面混凝土也存在明显的应力集中。

The three-dimensional finite element model of the test specimens are established based on ABAQUS finite element analysis software.The results of numerical simulation are in good agreement with the practical engineering.The results are as follows:The concrete near the lower flange of the embedded ring is the most prone to stress concentration,where the damage is the most serious;The stress around the lower flange has a certain distribution along the circumference.The research results can be used for reference to master the bending bearing capacity of the foundation and embedded ring connection and to improve the design method of the embedded ring.