水上柔性光伏双层索系结构分析与施工关键技术研究
杜壮壮 , 王泽强 , 马鑫民 , 赵一峰 , 胡洋 , 陈新礼
建筑钢结构进展 ›› 2025, Vol. 27 ›› Issue (10) : 113 -122.
水上柔性光伏双层索系结构分析与施工关键技术研究
Structural Analysis and Construction Technologies of Floating Flexible Photovoltaic Double-Layer Cable Systems
水上柔性光伏支架可采用单层悬索、双层索系、索网支撑等结构形式。针对北京良乡污水处理厂结构跨度大、造型复杂、施工难的特点,选择双层索系结构光伏支架,该支架由承重索、抗风索和竖向连接索组成。该结构通过对双索和摇摆柱的设计,使结构具有跨度大、自重轻以及拉索受力均衡的优点。在对索结构进行合理的选型设计时,基于等效用钢量的方法对三种索结构设计方案的成本效益进行了评估。对经济效益较好的双层索系结构光伏支架进行了静力性能及参数分析。考虑到地面施工条件受到限制,研究了适合该工程的水上施工方法及关键技术。结果表明:良乡污水处理厂双层索系结构光伏支架的经济效益较好,结构变形及构件应力均满足规范要求。张拉单层拉索的施工张拉方案能够有效节约成本,采用的摇摆柱临时加固措施及辅助钢绞线辅助布索方式,能够有效地保证施工过程的安全,满足质量控制要求。
The floating flexible photovoltaic bracket can be in the form of a single-layer suspension cable,a double-layer cable system,a cable net support and other structural forms. In view of the characteristics of the Beijing Liangxiang sewage treatment plant,which has a large structural span,complex shape,and construction difficulties,a double-layer cable-stayed structure photovoltaic support is chosen. This support consists of load-bearing cables,wind-resistant cables,and vertical connecting cables.. Through the design of double cables and rocking columns,the structure has the advantages of large span,light weight and well-balanced internal forces of the cable. The cable structure was reasonably selected and designed,and the cost-effectiveness of the three cable structure design schemes was evaluated based on the method of equivalent steel consumption. The static performance and parametric analysis of the double-layer cable structure photovoltaic bracket with good economic benefits were carried out. Based on the limited ground conditions,the water-based construction methods and key technologies suitable for the project were studied. The results show that the economic benefits of the double-layer cable structure photovoltaic bracket of Liangxiang Sewage Treatment Plant are good,and the structural deformation and component stress meet the requirements of the specification. The single-layer cable construction tensioning scheme can effectively save costs,and the temporary reinforcement measures of the rocking column and the auxiliary steel strand effectively ensure the safety of the construction process and meet the quality control requirements.
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