Studying on the Application of the Flat-Top Straight Wall Cross Diaphragm (CRD)+Multiple Pre-Top Bracing Concealed Excavation Construction Method

Abstract:

In this paper, the Beijing 10-line New Gongzhufen station close-attached undercrossing the existing Subway Line 1 Station is taken as engineering background, and studying on the application of the flat-top straight wall Cross Diaphragm (CRD)+ multiple pre-top bracing concealed excavation construction method in the large cross-section metro station closely-attached undercrossing the existing station. The result shows that the construction method can effectively control settlement of the existing station and satisfy the 3mm settlement control indicators of the bottom of the existing station. So the construction method is an applicable value in the construction of the strictly close-attached passing through the existing buildings.

• Periodical: Advanced Materials Research (Volumes 926-930)
• Pages: 640-644
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.926-930.640
• Online since: May 2014
• Authors: Ji Dong Li*, Lian Jin Tao, Jun Hai An, Bin Lin Wu
• Keywords: Close-Attached Undercrossing, Existing Stations, Flat-Top Straight Wall CRD, Multiple Pre-Top Bracing

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DOI: 10.18057/icass2018.p.135