四川水力发电2024，Vol.43Issue(2)：141-146,151,7.
小净距换乘通道施工对既有车站隧道及地表影响研究
Study on the Influence of Small Clearance Transfer Channel Construction on Existing Station Tunnel and Surface
缪振畴 1赵东平 2朱龙 3刘晓贺1
作者信息
- 1. 中国水利水电第五工程局有限公司,四川 成都 610066
- 2. 西南交通大学土木工程学院,四川 成都 610031||西南交通大学交通隧道工程教育部重点实验室,四川 成都 610031
- 3. 西南交通大学土木工程学院,四川 成都 610031
- 折叠
摘要
Abstract
The construction of the small clearance upper span of the communication channel will have adverse effects on the existing station tunnels and the ground surface.Reasonable excavation methods can effectively control the adverse effects of construction.Based on the upper span project of the transfer channel of Yudais-han Station in the west extension section of Chongqing Rail Transit Line 4,the three-dimensional numerical method is used to study the influence of the excavation of the transfer channel on the existing station and the surrounding environment under the conditions of the full-section method and the upper and lower step method.The results show that the excavation of transfer channel will reduce the safety of station tunnel support struc-ture.The excavation of the transfer channel will increase the surface settlement and the lowest point of the set-tlement trough will shift from the center of the station tunnel to one side of the transfer channel,and the offset value is about 2.8～5.7 m.By comprehensively comparing the two construction methods,it is recommended to adopt the upper and lower step method in the initial excavation stage(L1 and L2 sections)of the transfer channel in the actual project.After avoiding the large impact area,the full section method is adopted for con-struction,which can take into account the construction efficiency under the premise of ensuring safety.关键词
暗挖施工/换乘通道/小净距/上跨施工/车站隧道Key words
Underground excavation construction/Transfer channel/Small clear transfer channel/Upper span construc-tion/Station tunnel分类
交通运输引用本文复制引用
缪振畴,赵东平,朱龙,刘晓贺..小净距换乘通道施工对既有车站隧道及地表影响研究[J].四川水力发电,2024,43(2):141-146,151,7.
