重庆北站大断面立体交叉段施工技术研究

黄明利1,宁锐2,瞿晓巍1,谭忠盛1

铁道工程学报 ›› 2017, Vol. 34 ›› Issue (1) : 106-111.

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铁道工程学报 ›› 2017, Vol. 34 ›› Issue (1) : 106-111.
城市轨道工程

重庆北站大断面立体交叉段施工技术研究

  • 黄明利1,宁锐2,瞿晓巍1,谭忠盛1
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Research on the Construction Technology of Large Cross Section of Chongqing North Railway Station

  • HUANG Ming -li1,NING Rui2,QU Xiao - wei1,TAN Zhong - sheng1
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摘要

摘要:研究目的:近距离交叉隧道修建带来的挑战日益增多,本文依托重庆北站10号线与环线交叉换乘车站 工程,运用数值计算、理论分析、现场监测数据等手段,对应力、变形及实测数据进行对比分析,从而确定合理 的施工方案,为类似地铁工程建设提供参考。研究结论 :( 1)在3个备选方案中选择了方案一 : 10号线先开挖,且10号线二次衬砌先施作;(2)对方案 一的交叉段进行数值模拟,最大沉降及最大隆起分别为8. 2 mm和4. 04 mm,都没有超过安全值;(3)实测 数据表明,地表建筑物沉降最大值为1. 30 mm,净空收敛最大值为12. 53 mm(爆破扰动),拱顶最大沉降为 7.76 mm,可见采用方案一开挖交叉段可以很好地控制隧道围岩的稳定性,进一步验证了选择方案一的合理;(4) 重庆 铁车站等 铁车站的施工 。

Abstract

Abstract : Research purposes : The challenges caused by the construction of the near distance cross tunnel are increasing. Relying on the Chongqing North Railway Station line 10 and loop line cross transfer station project, this paper makes a comparative analysis of tlie stress,deformation and measured data,by means of numerical calculation, theoretical analysis,and field monitoring data,to determine the reasonable construction scheme,to provide reference for similar subway projects. Research conclusions:(1) We chose the first scheme in three alternatives : that is line 10 first excavation and followed by line 10 lining. (2) By the numerical simulation of a cross section of tlie program,the maximum settlement and the maximum uplift were 8.2 mm and 4. 04 mm,which are not more than the safety range. (3) The measured data shows that t!ie ground building maximum settlement value is 1.30 mm,the maximum convergence value is 12. 53 mm (blasting disturbance), the maximum settlement of crown is 7. 76 mm. The stability of tunnel surrounding rock can be well controlled by the method of excavation cross section, which further verifies the rationality of the selection scheme. (4) The research results can provide reference for the construction of Chongqing Metro station and ot!ier similar metro station.

关键词

关键词:交叉隧道 / 地铁 / 方案研究 / 数值模拟

Key words

Key words: cross tunnel / metro / research on scheme / numerical simulation

引用本文

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黄明利1, 宁锐2, 瞿晓巍1, . 重庆北站大断面立体交叉段施工技术研究[J]. 铁道工程学报, 2017, 34(1): 106-111
HUANG Ming -li1, NING Rui2, QU Xiao - wei1, et al. Research on the Construction Technology of Large Cross Section of Chongqing North Railway Station[J]. Journal of Railway Engineering Society, 2017, 34(1): 106-111

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