（华东建筑设计研究院有限公司， 上海 200041）

［摘要］基于气象站的观测数据，推导得到某1.25MW风机位置处的风速风向联合分布函数，对风机塔筒结构的风致响应和疲劳寿命进行计算，将计算结果与现场实测结果进行对比，系统研究了风速风向对风机塔筒结构动力响应和疲劳寿命的影响。结果表明：风向对顺风向和横风向位移响应的影响规律不一致，且风向对塔筒结构的疲劳累积损伤影响较大，在风向出现概率较大的区间产生的疲劳累积损伤较大。与考虑风向角下得到的疲劳寿命相比，不考虑风向角影响的疲劳寿命偏小。为了兼顾风机结构设计的可靠性和经济性要求，需考虑风向对风机塔筒结构疲劳寿命的影响。

［关键词］风力发电机； 塔筒结构； 风速风向； 气象站观测数据； 风速风向联合分布函数； 风致响应； 疲劳寿命

中图分类号：TU312+.1， TU391文献标识码：A文章编号：1002-848X(2020)18-0026-08

Influence of wind speed and wind direction on the dynamic response and fatigue life of wind turbine tower-silo structures

HUO Tao

(East China Architectural Design & Research Institute Co., Ltd., Shanghai 200041, China)

Abstract:Based on the observation datum of the weather station, the joint distribution function of wind speed and wind direction at the site of a 1.25MW wind turbine was derived, and the wind-induced response and fatigue life of the wind turbine tower-silo structure were calculated. The calculated results were compared with the actual measured results, and influence of wind speed and wind direction on the dynamic response and fatigue life of wind turbine tower-silo structure was systematically studied. The results indicate that the influence of wind direction on the displacement response of along-wind direction and cross-wind direction is inconsistent, wind direction has great influence on fatigue cumulative damage, and the greater fatigue cumulative damage occurs in the interval where the larger probability of wind direction appears. Compared with the fatigue life obtained by considering  wind direction, the fatigue life without considering the influence of wind direction is smaller. In order to consider the reliability and economic requirements of wind turbine structural design, it is necessary to consider the influence of wind direction on the fatigue life of wind turbine tower-silo structures.

Keywords:wind turbine generator; tower-silo structure; wind speed and wind direction; observation datum of weather station; joint distribution function of wind speed and direction; wind-induced response; fatigue life

*科技部土木工程防灾国家重点实验室资助项目（SLDRCE14-B-04）。

作者简介：霍涛，博士，工程师，一级建造师，Email:tao_huo@arcplus.com.cn