华东交通大学学报2017，Vol.34Issue(2)：10-19,10.
冲刷线下的杭州越江隧道抗浮分析
Anti-floating Analysis of Cross-river Shield Tunnel under Scour Line in Hangzhou
杨赳1
作者信息
- 1. 北京城建设计发展集团股份有限公司,浙江 杭州 310000
- 折叠
摘要
Abstract
It is a common occurrence that the flood scours the riverbed and the back-silting takes place immedi-ately by turn,which inevitably influences the safety of shield tunnel through the Qiantang River. The buried depth of shield tunnel must content Anti floating requirement.How to determine the thickness of covering layers reasonably is an urgent problem to be solved to ensure the safety of tunnel and the construction cost under con-trol. This paper considers anti floating force of tunnel and its application under various working conditions, and taking the Hangzhou Metro Line 4 crossing the Qiantang River Tunnel as an example. The results shows,the anti floating force of tunnel is controlled by scour line under use phase. the anti floating force of tunnel can choice the gravity anti floating mode,which is safety when the overburden of tunnel is three metres. Special cir-cumstances are also discussed when the tunnel under construction is encountered scour by the river floods in 300 years. In this moment , we need to consider a lot of things,including the shear force of Tunnel bolt,the pri-mary coagulation time and the grouting process.关键词
越江隧道/冲刷线/抗浮Key words
cross-river tunnel/scour line/anti floating分类
交通工程引用本文复制引用
杨赳..冲刷线下的杭州越江隧道抗浮分析[J].华东交通大学学报,2017,34(2):10-19,10.
