桩土相互作用对海洋风电装置动力响应的影响研究  

Influence of pile-soil interaction on dynamic response of marine wind power plant

作　　者：李凯文 黄帅[2] LI Kai-wen;HUANG Shuai(Guangdong Power Transmission and Transformation Engineering Co., Ltd., Guangzhou 510160, China;Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China)

机构地区：[1]广东省输变电工程有限公司,广东广州510160 [2]中国地震局地壳应力研究所,北京100085

出　　处：《河南城建学院学报》2019年第2期27-32,共6页Journal of Henan University of Urban Construction

基　　金：国家重点研发计划专题项目(2017YFC1500404)

摘　　要：分别采用m法、p-y曲线法和实体单元法计算海洋风电装置在随机风荷载作用下的动力响应,计算结果表明:采用三种桩土计算方法计算风电机系统的基本自振周期时,计算结果相差不大,而m法对风电机高阶模态影响较大;p-y曲线法用于风电机桩基础计算时结果与实体单元法较为吻合,可用于风电机基础设计,在暴风荷载作用下,p-y曲线法无法考虑土层刚度退化的影响;对m法在循环动力荷载作用下的适用性进行分析,根据规范取值时,取3~4倍m值时较为理想。M method, p-y curve method and solid element method are respectively used to calculate the dynamic response of offshore wind power plant under random wind load. The calculation results show that there is little difference in the calculation results when three pile-soil calculation methods are used to calculate the basic natural vibration Period of wind motor system, while M method has great influence on the high-order modes of wind motor. The results of p-y curve method used in the calculation of wind turbine pile foundation are in good agreement with those of solid element method, which can be used in the design of wind turbine foundation. Under the action of storm load, p-y curve method cannot consider the influence of soil stiffness degradation. The applicability of M method under cyclic dynamic load is analyzed. When the value is taken according to the code, it is ideal to take 3~4 times of M value.

关 键 词：大型海上单桩风电机 M法 P-Y曲线法 实体单元法 随机风荷载 不同边界条件 

分 类 号：TU443[建筑科学—岩土工程]