承载光伏的大跨度煤棚风荷载特性研究  

Research on the wind load characteristics of large span coal shed carrying photovoltaics

作　　者：盛旭平 周益君 焦听雷 方伟定 王学民 SHENG Xuping;ZHOU Yijun;JIAO Tinglei;FANG Weiding;WANG Xuemin(Zhejiang Electric Power Design Institute,China Energy Engineering Group,Hangzhou 310012,China)

机构地区：[1]中国能源建设集团浙江省电力设计院有限公司,浙江杭州310012

出　　处：《武汉大学学报(工学版)》2024年第S2期108-114,共7页Engineering Journal of Wuhan University

摘　　要：针对台州某承载大面积光伏组件的大跨度煤棚风荷载特性进行了全面研究,旨在深入理解其在不同风向角下的风荷载行为及风荷载对其结构稳定性的影响。通过刚性模型测压风洞试验,获取了风压系数与极值风压数据,进而利用ANSYS软件进行风振响应的数值模拟与分析。通过风洞试验与模态分析,揭示了墙面与屋面在正、负风压条件下不同风压系数时的表现,结果表明:屋面在反向风压力下的风压较大;结构主要在迎风面受风压力,在顶部和背风面受风吸力,其顶部的风吸力在300°风向角下达到最大;结构响应以竖向为主,垂直风荷载对整体结构影响较大。最后将试验结果与规范进行对比可知,结构承载力符合要求,但迎风面墙体和屋顶的风荷载规范取值较保守。This paper comprehensively studies the wind load characteristics of a large-span coal shed carrying large-area photovoltaic modules in Taizhou,aiming to gain a deeper understanding of its wind load behavior under different wind directions and its impact on structural stability.Through rigid model pressure wind tunnel tests,wind pressure coefficients and extreme wind pressure data are obtained,and then numerical simulation and analysis of wind induced vibration response are carried out by using ANSYS software.Through wind tunnel tests and modal analysis,the different wind pressure coefficients of walls and roofs under positive and negative wind pressure conditions are revealed,reflecting that roofs have higher wind pressure under reverse wind pressure.The structure is mainly subjected to wind pressure on the windward side,and wind suction on the top and leeward sides.The wind suction on the top reaches its maximum at a wind direction angle of 300°.The structural response is mainly vertical,and vertical wind loads have a significant impact on the overall structure.Finally,the experimental results are compared with the specifications,and the structural bearing capacity meet the requirements,but the wind load values for the windward walls and roofs are relatively conservative in the specifications.

关 键 词：光伏屋面 大跨度煤棚 风洞试验 风振分析 有限元 

分 类 号：TU317[建筑科学—结构工程]