跟踪式柔性光伏支架结构疲劳损伤评估

赵悦; 王康杰; 俞华锋; 贾媛; 李文倩

doi:10.3724/j.gyjzG25060201

跟踪式柔性光伏支架结构疲劳损伤评估

doi: 10.3724/j.gyjzG25060201

1. 中国电建集团华东勘测设计研究院有限公司, 杭州 311122;
2. 天津大学建筑工程学院, 天津 300072;
3. 天津城建大学经济与管理学院, 天津 300384

基金项目:

中国博士后科学基金（2020M681802）；华东勘测设计研究院科技项目（KY2022-XNY-02-22）。

详细信息

作者简介:
赵悦,博士,主要从事光伏发电、海洋工程方向研究,zhao_y7@hdec.com。

通讯作者:
李文倩,博士,讲师,主要从事地震灾害、新能源方向研究,bxqe@163.com。

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出版历程
- 收稿日期: 2025-06-02
- 网络出版日期: 2026-11-06

Fatigue Damage Assessment of Tracked Flexible Photovoltaic Support Structure

1. PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
3. School of Economics and Management, Tianjin Chengjian University, Tianjin 300384, China

摘要

摘要: 柔性光伏支架长期暴露于自然环境下，受到不均匀强风压的作用，其结构易受到风振影响，产生疲劳损伤。针对柔性光伏支架结构受强风压下的安全运行问题，提出一种跟踪式单跨双排柔性光伏支架结构，并对其风振特性和结构疲劳损伤开展研究。首先进行结构模态分析，探索光伏板倾角与中间连杆对其自振特性的影响规律；随后采用脉动风速谱构建动力荷载时程，计算结构变形特性，选取结构关键杆件，并求得应力时程；选取不同工况进行分析，根据雨流计数法得到荷载实际循环次数，通过结合Palmgren-Miner准则与S-N曲线法，对结构各关键节点的疲劳寿命作出准确评估。结果表明：脉动风长期作用下光伏支架产生的疲劳损伤满足相关规范要求，其中，承重索与斜拉杆的损伤值较大；光伏板倾角越大，结构受损伤值也越大。
- 跟踪结构 /
- 光伏发电 /
- 柔性支架 /
- 风振响应 /
- 疲劳损伤 /
- 寿命预测
Abstract: The flexible photovoltaic bracket has been exposed to the natural environment for a long time， and the structure is susceptible to the influence of wind vibration and fatigue damage. In order to solve the problem of safe operation of flexible photovoltaic bracket structures under strong wind pressure， a tracking single-span and double-row flexible photovoltaic bracket structure was proposed， and its wind vibration response and structural fatigue damage were studied. Then， the fluctuating wind speed spectrum was used to construct the dynamic load time history， the deformation and force characteristics of the structure were calculated， the key members of the structure were selected， and the stress time history was obtained. Different working conditions were selected for analysis， and the actual number of load cycles was obtained according to the rain flow counting method. The fatigue life of each key node of the structure was accurately evaluated by combining the Palmgren-Miner criterion and the S-N curve method. The results show that the fatigue damage generated by the fluctuating wind under the long-term action of the fluctuating wind meets the requirements of the specification， and the damage value of each characteristic position is greater than that of the horizontal wind under the action of the wind load perpendicular to the photovoltaic panel， and the damage value of the cable-stayed rod is the largest， and the larger the flip angle， the greater the damage value of the structure.
- tracking structure /
- photovoltaic power generation /
- flexible brackets /
- wind vibration response /
- fatigue injury /
- life expectancy

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