广州地铁4号线大直径单圆双线盾构施工段的线路平面设计
刘延晨
Line Plane Design of the Large Diameter Single Circle\|Double Track Shield Construction Section on Guangzhou Metro Line 4
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.2020.08.005
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中图分类号/CLCN:U231.2
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栏目/Col:研究报告
摘要:
介绍了采用大直径单圆双线盾构施工技术与采用传统盾构技术的设计差别。详细阐述了左右线平面设计方法及比选。基于广州地铁4号线，对线间距等关键参数进行了计算。从防火门设置、建筑限界、施工误差等方面校核了线间距取值的合理性，并最终确定施工线位置。
Abstracts:
There are obvious differences between the large diameter single circle\|double track shield technology and that of the traditional shield. In this paper, the plane design method of left and right lines are elaborated and compared. Taking Guangzhou metro Line 4 as an example, key parameters like the line spacing are calculated, the rationality of line spacing is checked from the aspects of fire\|proof door setting, construction clearance and engineering errors. Finally, the location of construction line is determined.
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