摘要
以义乌市机场路地下通道工程为例,对可能采取的断面型式进行分析比选,同时对影响结构受力的参数,如折板拱高,折板拱宽及顶板自重等进行分析。结果表明:对于跨度在25m左右的超大跨度地下通道工程,当折板拱高2.5m,拱宽5.0m,顶板厚1.2m时,整个结构受力较合理,经济性较高。所得结果可为类似工程设计提供参考。
Taking the Yiwu Airport Road Underground Channel Project as an example, this paper analyzes and compares the possibly adopted section forms, and analyzes the parameters influencing the structure stress, i.e. arch height of folded plate, width of folded plate and dead weight of folded plate. The result shows that the stress is more reasonable and the economy is higher for the super-large span about 25 m underground channel project when the arch height of folded plate is 2.5 m, the width is 5.0 m and the thickness of folded plate is 1.2 m. The achieved result can be referred for the design of the similar projects.
出处
《城市道桥与防洪》
2019年第5期290-293,304,M0031,共6页
Urban Roads Bridges & Flood Control
关键词
地下通道
断面形式
直墙折板拱
超大跨度
underground channel
section form
straight-wall folded plate arch
super-large span
