Abstract：Research purposes: The super-large diameter pipe jacking cluster jacking through Beijing-Shanghai railway subgrade in curve manner will inevitably disturb the soil around the pipelines. The effect of different jacking orders on the deformation of railway roadbed and track is analyzed and evaluated via simulation calculation，and the scheme of sleeve valve pipe grouting for roadbed reinforcement is proposed according to geological data，in order to enable pipe jacking cluster to safely run through the railways in operation.
Research conclusions:(1)Given the effect of different jacking orders，the final deformation of railway subgrade caused by jacking is expressed as settlement trough form，with horizontal inclination angle around deformation region boundary line for 45 0 . ( 2)The subgrade deformation will occur at different locations in different times caused by different jacking sequences，with little difference between the final deformations.(3)The influence of pipe jacking on the railway is assessed according to the settlement of subgrade and the vector value of track’s short chord，and the simulation calculation results show that the maximum vector value of the track’s short chord does not exceed the requirements. (4)The settlement curve displays that the maximum settlement of subgrade surface has exceeded 10 mm，and thus grouting sleeve valve pipe results have value in safety for reinforcement can meet existing subgrade technology requirements. (5)The research evaluation and design of structures through railway without open excavation.
Xu Zhixiang, Qu Jingjing. Application of Sleeve Valve Tube Grouting in Treatment of Pipe Jacking Subsidence [J].Transportation Standardization, 2011(20):82-86.
[3]
丛茂强.软土中大直径顶管的施工扰动机理与控制研究 [D].上海:上海交通大学，2013
Zhong Yuhong. Design and Construction of Earth Pressure Balance Push Bench' s Pipe Jacking' s Crossing Railway Subgrade[J].Railway Engineering, 2013 (11);60-63.
Wei Gang. Theoretical Study on Properties of Soil and Structure during Pipe Jacking Construction[D]. Zhejiang:Zhejiang University,2005.
Wang Binglong, Xia Jianguo, Wu Ting. Report about Design Consulting of Xizhi Lake Port Hub Pipe Jacking through Existing Shanghai-Nanjing Railway Subgrade [R].Shanghai:Shanghai Tongji Engineering Consulting Co. Ltd,2013.
Gu Yang. Testing and Analysis of Disturbance Influence upon Building Underneath Testing Passed by Super Large Diameter Pipe-Jacking[J].Building Construction , 2014 ( 4 ) ; 441-443.
Peng Chunqiang, Zhang Yi, Fan Minquan. Application of Super-diameter Reinforced Concrete Pipe Jacking in Drainage Engineering[J].Special Structures, 2011 (4);21-24.
[5]
钟宇宏.土压平衡顶管机顶管下穿铁路路基设计与施工 [J].铁道建筑，2013(11):60-63
Peng Feng, Liu Guangjun. Technology Research on Sleeve-value- Pipe River Grouting for Reinforcing the Pearl Dam Underpassed by Shiziyang Tunnel[J]. Journal of Railway Engineering Society, 2010(7).56- 59.
2015, Vol. 32 
版权所有 © 2014 《铁道工程学报》编辑部