地铁既有线与延伸段在隧道衔接处的线路错位解决方案*
刘延晨
Solution to Line Dislocation at the Tunnel Junction of Metro Existing Line and Extension Section
LIU Yanchen
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作者信息:广州地铁设计研究院股份有限公司，510010，广州
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Affiliation:Guangzhou Metro Design & Research Institute Co., Ltd., 510010, Guangzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.08.012
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中图分类号/CLCN:U457+6
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栏目/Col:研究报告
摘要:
国内目前尚无简单、实用的思路或方法能够快速解决地铁既有线与延伸线隧道衔接处线路错位问题。根据限界、施工工法特点提出双边控制法,限定线路方案变化范围，实现线路调整可视化,提高工作效率;以广州地铁4号线南延线与既有线隧道衔接处线路错位为例,系统分析线路错位的原因,测量既有线和新建线的边界条件,按照“双边控制法”调整线路方案。测量验证表明,调整后方案是可行的。
Abstracts:
Currently, There are no simple and practical ideas or methods yet to efficiently solve the line dislocation problem at the tunnel junction of metro existing line and extension section in China. According to the characteristics of gauge and construction method, a double track control control method is proposed to limit the changing range in line plan, realize the line adjustment visualization and improve the work efficiency. Taking the line dislocation at tunnel junction of the existing line and the south extension section of Guangzhou metro Line 4 as an example, the causes of line dislocation are systematically analyzed; the boundary conditions of existing and extending lines are measured, and the line plan is adjusted according to the double track control method.
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