摘要
为解决大跨度柔直阀厅网架屋盖吊装过程中面临的跨度大、吊装条件受限、变形控制严格等难点,确保世界首个特高压柔直阀厅顺利实施,本文对阀厅网架屋盖吊装过程中面临的关键技术开展研究。经过对多种吊装方案综合比较,确定采用液压同步提升技术对网架进行整体提升。对吊装全过程进行力学仿真计算并提出有效的挠度控制措施,确保网架受力安全以及变形满足设计要求。引入第三方实时动态监测技术进行监测,对提升过程中网架的状态进行评估和预警,提高了网架吊装施工的安全可靠性。上述成果确保了大跨度柔直阀厅网架屋盖的顺利吊装,其成功经验可为类似结构施工提供借鉴。
In order to solve the problems faced in the hoisting process of large-span grid roof of VSC-UHVDC valve hall,such as large span,limited hoisting conditions and strict deformation control,and ensure the smooth implementation of the world’s first VSC-UHV DC valve hall,in this paper,the key technologies faced in the hoisting of valve hall space truss roof are studied.Through the comprehensive comparison of various hoisting schemes,it is determined to use the hydraulic synchronous lifting technology to lift the grid as a whole.Mechanical simulation calculation for the whole hoisting process is conducted and effective deflection control measures are put forward to ensure that the stress safety and deformation of the grid meet the design requirements.The third-party real-time dynamic monitoring technology is introduced to monitoring,the state of the grid in the lifting process is evaluated and early warned,which improved the safety and reliability of the grid hoisting construction.The results ensured the successful implementation of the world’s first VSC-UHVDC valve hall,and its successful experience can provide references for the construction of similar structures.
作者
石骁
张肖峰
陈进于
SHI Xiao;ZHANG Xiaofeng;CHEN Jinyu(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,Guangdong,China;Architectural Design and Research Institute Co.,Ltd.,of Guangdong Province,Guangzhou 510010,Guangdong,China)
出处
《工程建设》
2022年第2期56-62,共7页
Engineering Construction
