大跨度光伏跟踪支架结构风振响应特性研究
Research on Wind Vibration Response Characteristics of Large Span Photovoltaic Tracking Support Structure
陈雪辉 1张一凡 1李昊 1马涛 2李威 2高婷1
作者信息
- 1. 安徽建筑大学 机械与电气工程学院,安徽 合肥 230601;高端装备关键摩擦副安徽省重点实验室,安徽 合肥 230601
- 2. 高端装备关键摩擦副安徽省重点实验室,安徽 合肥 230601;合肥波林新材料股份有限公司,安徽 合肥 230601
- 折叠
摘要
为研究大跨度光伏跟踪支架的风振响应特性,以某平单轴跟踪式光伏支架为研究对象,分析其动力学特性,采用谐波叠加法模拟脉动风速时程,通过时程分析方法对支架进行风振响应研究并考察平均风速、光伏板倾角以及风向角对光伏跟踪支架结构风振响应的影响.研究结果表明:光伏跟踪支架自振频率较低且分布集中;所有支撑组件中,檩条风致位移响应最大,主梁和立柱位移响应较小;檩条顺风向长度上位移响应具有不对称性,主梁横风向长度上位移响应与自身结构对称性一致;结构风致位移响应随着平均风速、光伏板倾角、风向角的增大而增大;负向风荷载作用下,光伏跟踪支架风振响应更剧烈,光伏板倾角从 25°增大到 35°时,支架的刚度会迅速降低,横向脉动风对主梁和立柱的位移响应影响很大.
Abstract
To study the wind-induced vibration response characteristics of large-span photovoltaic track-ing brackets,a flat single axis tracking photovoltaic bracket was taken as the research object,and its dynamic characteristics were analyzed.The harmonic superposition method was used to simulate the fluctuating wind speed time history.The wind-induced vibration response of the bracket was studied using the time history analysis method,and the effects of the average wind speed,photovoltaic panel in-clination angle,and wind direction angle on the wind-induced vibration response of the photovoltaic tracking bracket structure were investigated.The results indicate that the natural frequency of photovol-taic tracking brackets is low and distributed centrally.Among all supporting components,the wind in-duced displacement response of purlins is the highest,while the displacement response of main beams and columns is relatively small.The displacement response of purlins along the windward direction has asymmetry,while the displacement response of the main beam along the windward direction is consistent with the symmetry of its own structure.The wind-induced displacement response of the structure increa-ses with the increase of average wind speed,photovoltaic panel inclination angle,and wind direction an-gle.Under negative wind loads,the wind vibration response of photovoltaic tracking brackets is more severe.When the inclination angle of the photovoltaic panel increases from 25° to 35°,the stiffness of the bracket will rapidly decrease.The lateral pulsating wind has a significant impact on the displace-ment response of the main beam and columns.
关键词
光伏跟踪支架/脉动风/风振响应/风荷载Key words
photovoltaic tracking bracket/pulsating wind/wind vibration response/wind load引用本文复制引用
基金项目
安徽省高校杰出青年科研项目(2022AH020025)
安徽省高等学校自然科学重点研究项目(2022AH050257)
国家开发投资集团有限公司科技项目(sdic2023-03)
合肥市自然科学基金资助项目(202317)
安徽省住房城乡建设科学技术计划项目(2022-YF056)
出版年
2024
NETL
NSTL
万方数据