ISSN 2096-4498

   CN 44-1745/U

二维码

New Construction Method for Secondary Lining of Railway Tunnel and Design of Lining Trolley Scheme

  • LI Xianjin ,
  • LIN Chungang ,
  • LI Jing
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  • (1. Construction Center of Guangzhou Nansha Economic and Technological Development Zone, Guangzhou 511458, Guangdong, China; 2. Guangdong Provincial Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure, Guangzhou 511458, Guangdong, China; 3. China Railway Tunnel Consultants Co., Ltd., Guangzhou 511458, Guangdong, China)

Online published: 2021-03-06

Abstract

In traditional secondary lining, problems on honeycomb surface, cracks, void behind the arch and falling blocks always exist. Hence, a secondary lining construction method that uses assembled tunnel arch and its corresponding construction trolley design scheme are demonstrated for Hujiagou tunnel in the east ring line of the Chongqing railway hub. Moreover, the longitudinal sealing schemes for sidewall pouring of the trolley are compared to obtain design scheme for the formwork trolley in three different lining structures. Three main trolley structures in the scheme are similar and share the support, hydraulic, walking, sideformwork, and auxiliary systems, which can be modified at low cost according to different lining structures. The theoretical research demonstrates that the adoption of new method reduces the defects of lining arch cast by integral pouring and eliminates many hidden dangers of driving, which helps in saving pouring time and improving concrete liningconstruction efficiency.

Cite this article

LI Xianjin , LIN Chungang , LI Jing .

New Construction Method for Secondary Lining of Railway Tunnel and Design of Lining Trolley Scheme

[J]. Tunnel Construction, 2021 , 41(2) : 293 -299 . DOI: 10.3973/j.issn.2096-4498.2021.02.016

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