- 摘 要
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(中機國際工程設計研究院有限責任公司， 長沙 410007)
［摘要］以某污水處理廠預應力柔性光伏支承體系發(fā)電項目為例，對預應力柔性光伏支承體系的結構形式進行了介紹，分析了該種結構形式在污水處理廠光伏項目中具備的優(yōu)點，同時運用MIDAS Gen軟件計算預應力柔性光伏支承體系的自振周期和振型模態(tài)，分析了支承體系自振特性；取用Davenport風譜函數計算預應力柔性光伏支承體系中拉索結構風振作用下的位移，并與靜力風載作用下的位移進行比較，分析該支承體系風載脈動效應的影響大小。結果表明，結構自振頻率錯開了風荷載脈動頻率，不會發(fā)生共振，且風振影響較小。
［關鍵詞］鋼結構；柔性光伏支承體系；預應力；拉索；自振特性；風振響應
中圖分類號：TU318+.2 文獻標識碼：A文章編號：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
作者簡介：謝丹，學士，高級工程師，一級注冊結構工程師，Email:2417901908@qq.com； 通信作者：范軍，學士，工程師，Email:2018454938@qq.com。
