(中机国际工程设计研究院有限责任公司， 长沙 410007)

［摘要］以某污水处理厂预应力柔性光伏支承体系发电项目为例，对预应力柔性光伏支承体系的结构形式进行了介绍，分析了该种结构形式在污水处理厂光伏项目中具备的优点，同时运用MIDAS Gen软件计算预应力柔性光伏支承体系的自振周期和振型模态，分析了支承体系自振特性；取用Davenport风谱函数计算预应力柔性光伏支承体系中拉索结构风振作用下的位移，并与静力风载作用下的位移进行比较，分析该支承体系风载脉动效应的影响大小。结果表明，结构自振频率错开了风荷载脉动频率，不会发生共振，且风振影响较小。 

［关键词］钢结构；柔性光伏支承体系；预应力；拉索；自振特性；风振响应 

中图分类号：TU318+.2 文献标识码：A文章编号：1002-848X(2021)21-0015-04

Wind vibration analysis of prestressed flexible photovoltaic support system 

XIE  Dan,  FAN  Jun 

(China Machinery International Engineering Design & Research Institute  Co., Ltd., Changsha 410007， China) 

Abstract: Taking a prestressed flexible photovoltaic support system power generation project of a sewage treatment plant as an example, the structural form of the prestressed flexible photovoltaic support system was introduced, the advantages of this structural form in the photovoltaic project of the sewage treatment plant were analyzed, and MIDAS Gen program was used to calculate the natural vibration period and vibration mode of the prestressed flexible photovoltaic support system, the natural vibration characteristics of the support system were analyzed. Davenport wind spectrum function was used to calculate the displacement of cable structure under wind vibration in prestressed flexible photovoltaic support system, and compared with the displacement under static wind load to analyze the influence of wind load pulsation effect of the support system. The results show that the natural vibration frequency of the structure is staggered from the fluctuating frequency of the wind load, resonance will not occur, and the influence of the wind vibration is small。 

Keywords:steel structure； flexible photovoltaic support system； prestress； cable； natural vibration characteristics； wind vibration response

 作者简介：谢丹，学士，高级工程师，一级注册结构工程师，Email:2417901908@qq.com； 通信作者：范军，学士，工程师，Email:2018454938@qq.com。