悬索光伏支架结构抗风设计方法初探  

Wind-resistant design method of cable-suspended photovoltaic module support structures

作　　者：蔡元 邓华[1,3] 李本悦 CAI Yuan;DENG Hua;LI Benyue(Space Structures Research Center,Zhejiang University,Hangzhou 310058,China;Center for Balance Architecture,Zhejiang University,Hangzhou 310028,China;The Architectural Design&Research Institute of Zhejiang University Co.,Ltd.,Hangzhou 310028,China)

机构地区：[1]浙江大学空间结构研究中心,杭州310058 [2]浙江大学平衡建筑研究中心,杭州310028 [3]浙江大学建筑设计研究院有限公司,杭州310028

出　　处：《振动与冲击》2022年第21期69-77,共9页Journal of Vibration and Shock

摘　　要：建立新型悬索光伏支架结构动力分析的向量式有限元模型,分析结构的风致位移和内力响应特点。定义表征结构风致动力响应的单边标准差,指出可采用正态分布函数近似分析动力响应的保证率。考察预应力、索截面面积、结构跨度、光伏板倾角以及基本风压分别对悬索光伏支架结构风致响应的影响规律。强调支架结构的风振响应取决于结构在平均风作用下平衡构型的性质。阐明结构风致准静力响应标准差与动力响应标准差高度相关,并提出了一种准静力响应标准差的计算策略。利用大规模参数分析结果,拟合出采用结构风致准静力响应标准差来估算风致动力响应标准差的公式,并验证了该公式的计算精度。最后建议了悬索光伏支架结构风致位移和内力响应计算的简便方法。Here,a vector form intrinsic finite element model for dynamic analysis of novel cable-suspended photovoltaic module support structure(CPMSS) was established to analyze characteristics of its wind-induced displacements and internal force responses.The unilateral standard deviation characterizing wind-induced dynamic response of the structure was defined to adopt normal distribution function approximately analyzing CPMSS dynamic response assurance rate.Effects of prestress,cable cross-sectional area,structural span,photovoltaic panel inclination and basic wind pressure on CPMSS wind-induced responses were investigated.It was emphasized that CPMSS wind-induced vibration response depends on the nature of equilibrium configuration of CPMSS under action of average wind.It was clarified that the standard deviation of wind-induced quasi-static response of CPMSS is highly correlated to the standard deviation of CPMSS dynamic response.A calculation strategy for the standard deviation of CPMSS quasi-static response was proposed.Using the results of large-scale parametric analysis,a formula to estimate the standard deviation of CPMSS wind-induced dynamic response was fitted by using the standard deviation of CPMSS wind-induced quasi-static response,and its calculation accuracy was verified.Finally,a simple method to calculate wind-induced displacements and internal force responses of CPMSS was proposed.

关 键 词：光伏组件 支架结构 悬索 风致响应 抗风设计 

分 类 号：TU393.3[建筑科学—结构工程] TU318.1