铁道标准设计2018，Vol.62Issue(5)：90-94,5.DOI:10.13238/j.issn.1004-2954.201705110004
三管隧道开挖对周边构筑物影响分析研究
Influential Analysis of Triple Tunnel Construction on Adjacent Structures
邱军1
作者信息
- 1. 中铁十六局集团有限公司,北京 100018
- 折叠
摘要
Abstract
To ensure the safety of the triple tunnels,a three-dimensional numerical model is developed to simulate construction process of subway and railway tunnels and to obtain metro tunnel construction induced track subsidence curve based on numerical simulation. By analyzing the displacement response during tunneling construction, the influences generated by metro shield tunneling and NATM construction on adjacent bridge piers and ground railway tracks are analyzed. Meanwhile, comparison is made between CD method and core soil bench method. The impacts of the two methods on the ground railway tracks are illustrated. Based on numerical simulation results,the tunneling influential range is defined as 44 m in width and 36.5m in longitudinal direction. Based on the influential range, field monitoring scheme is put forward. The field observation results show that the maximum settlement is only 0.5 mm, and the construction with current design scheme can ensure the safety of existing structures. The research results are of certain reference value for multiple tunnel construction in complex underground space.关键词
盾构隧道/NATM/数值模拟/近接Key words
Shield tunnel/NATM/Numerical simulation/Adjacent分类
交通工程引用本文复制引用
邱军..三管隧道开挖对周边构筑物影响分析研究[J].铁道标准设计,2018,62(5):90-94,5.
