铁道标准设计2018，Vol.62Issue(7)：102-108,7.DOI:10.13238/j.issn.1004-2954.201707040001
广深港高铁深港隧道下穿地铁1号线PBCRD工法数值计算研究
Numerical Analysis of Shengang Tunnel Construction with PBCRD Method on Guangzhou-Shenzhen-Hongkong High Speed Railway
陈建桦 1肖明清1
作者信息
- 1. 中铁第四勘察设计院集团有限公司,武汉 430063
- 折叠
摘要
Abstract
According to a large-section tunnel construction under a metro and underground business street in weak stratum,Midas-GTS numerical simulation is conducted to analyze the safety of the construction with PBCRD method.Research results show that PBCRD method could control displacement and ensure safety of the metro and underground business street,and preliminary support,temporary support and secondary lining of large-section tunnel are also safe guarded.Based on simulating results,construction strategies are provided as the followings.High pressure horizontal shot pile should be used to improve the stratum; advance geology forecast and non-blasting excavation should be employed; tunnel face should be closed and preliminary lining constructed in time; detailed scheme should be given in advance for piles penetrating the newly built tunnel.The structure constructed with PBCRD method has good integrity,less stress transformation,sufficient space for construction and pilot tunnel,and less secondary lining procedures.Meanwhile,it ensures the safety of quick tunnel construction and that of the adjacent buildings.关键词
铁路隧道/先墙后拱交叉中隔壁法/三维数值计算/近接工程/设计对策Key words
Railway tunnel/PBCRD/3D numerical calculation/Adjacent project/Design strategy分类
交通工程引用本文复制引用
陈建桦,肖明清..广深港高铁深港隧道下穿地铁1号线PBCRD工法数值计算研究[J].铁道标准设计,2018,62(7):102-108,7.
