华东交通大学学报2016，Vol.33Issue(6)：50-57,8.
越江隧道深切槽段上浮机理分析及控制研究
Mechanism Analysis and Control Study on Upward Movement in Deep Groove of Cross-River Tunnel
雷贺彩1
作者信息
- 1. 中铁第一勘察设计院集团有限公司,陕西 西安 710043
- 折叠
摘要
Abstract
Combined with the study on upward movement of shield tunnel in deep groove of Nanjing Cross-river Tunnel, this paper analyzes the upward movement mechanism and influencing factors of shield tunnel, then cre-ates a shield tunnel beam-spring model by numerical simulation to simulate the upward movement of tunnel un-der construction and finally puts forward control measures against influencing factors. Research results show that the shorter the initial setting time of synchronous grouting is, the faster the driving speed is, and the greater the vertical shear stiffness, the self-weight of rear supporting system and pressure difference between synchronous grouting, which could make the upward movement period smaller in the tunnel construction. Besides, lowering shield posture ahead of time, utilizing rubber gaskets with larger friction coefficient and pre-stressed bolts can also control tunnel upward movement.关键词
盾构隧道/越江隧道/上浮机理Key words
shield tunnel/cross-river tunnel/upward movement mechanism分类
交通工程引用本文复制引用
雷贺彩..越江隧道深切槽段上浮机理分析及控制研究[J].华东交通大学学报,2016,33(6):50-57,8.
