风力发电塔基础设计研究优化

Optimum Design of Wind Turbine Foundations

以四个实际的风力发电塔基础为工程背景,指出了现有基础结构形式的缺点,提出了多向预应力方案,对原方案进行优化设计。对目前两种典型的风机型号:陆地1.5 MW风机和潮间带3 MW风机的基础进行了优化设计和计算,并与原设计进行对比。总结出预应力筋配筋的面积估算公式,并与实际计算结果做对比。结果表明:多向预应力方案更具有经济性,耐久性;面积估算公式结果与实际配筋相差不大。

Disadvantages of the traditional wind turbine structure design were discussed based on four wind turbine foundations. An optimization design, based on the multi-direction prestress scheme, was proposed . The foundations for two types wind turbine, the 1.5MW inland turbine and the 3MW intertidal zone turbine, were optimized in design and compared with the conventional design. Results show that the multi-prestress scheme has a lower cost and higher corrosion resistance. Besides, a design formulation, which can help de- signers estimate the prestressed reinforcement area, was derived and checked.