光伏支架结构风参数取值研究  

Study on Wind Parameter Values of Photovoltaic Brackets

作　　者：姜东 Jiang Dong(Northwest Electric Power Design Institute Co.,Ltd.,Xi'an 710075,China)

机构地区：[1]中国电力工程顾问集团西北电力设计院有限公司,西安710075

出　　处：《特种结构》2024年第6期43-48,56,共7页Special Structures

摘　　要：风荷载是光伏支架的主要荷载,其参数取值的合理性对光伏支架结构的安全性和经济性有重要意义。光伏支架风荷载取值目前主要依据电力行业标准,其体型系数、干扰(折减)系数和风振系数取值依据主要来自双柱固定支架的研究成果,不能完全适用于所有支架结构的设计。本文针对单列单坡固定支架,通过风洞试验和风振响应分析,研究其体型系数、干扰(折减)系数和风振系数取值。结果显示体型系数和干扰系数试验值偏小,风振系数值偏大;给出了不同倾角下支架风荷载的综合不利取值,外排区域试验值偏大,内排区域偏小。研究成果可为规范修编提供依据,为类似结构设计提供参考。Wind load is the main load of photovoltaic brackets,and the rationality of its parameter values is of great significance for the safety and economy of photovoltaic bracket structures.The wind load value of photovoltaic brackets is currently mainly based on the standards of the power industry,and the values of their shape coefficient,interference(reduction)coefficient,and wind vibration coefficient are mainly based on the research results of double column fixed brackets,which cannot be fully applicable to the design of all bracket structures.This article focuses on the single row single slope fixed bracket,and studies its shape coefficient,interference(reduction)coefficient,and wind vibration coefficient values through wind tunnel tests and wind vibration response analysis.The results show that the experimental values of body shape coefficient and interference coefficient are relatively small,while the wind vibration coefficient value is relatively large;The comprehensive unfavorable values of wind load on the bracket under different inclination angles were given,with the test values in the outer row area being larger and the inner row area being smaller.The research results can provide a basis for standard revision and reference for similar structural design.

关 键 词：光伏支架 风洞试验 干扰系数 风振系数 

分 类 号：TU312.1[建筑科学—结构工程]