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Study on Excavation Schemes for the Redevelopment Construction of Highway Tunnels with Large Sections
(1 College of Civil Engineering, Chongqing University, Chongqing 400045; 2 Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007; 3 National Engineering Laboratory of Highway Tunnel Construction Technology, China Merchants Chongqing Communications Technology Research & Design Institute Co. Ltd., Chongqing 400067)
Abstract A redevelopment scheme for highway tunnels with large cross sections is presented using analog simula? tions and numerical calculations to study the law of surrounding rock deformation and stress variation during in-situ reconstruction of a large cross section tunnel in weak surrounding rock based on the first domestic in-situ reconstruction of a highway tunnel expanded from a twin-tube, four-lane highway tunnel into a four-tube, eight-lane tunnel. A combined construction scheme is set forth in which new construction goes before expansion, providing a reference for highway tunnels and similar underground works.
Abstract：
A redevelopment scheme for highway tunnels with large cross sections is presented using analog simula? tions and numerical calculations to study the law of surrounding rock deformation and stress variation during in-situ reconstruction of a large cross section tunnel in weak surrounding rock based on the first domestic in-situ reconstruction of a highway tunnel expanded from a twin-tube, four-lane highway tunnel into a four-tube, eight-lane tunnel. A combined construction scheme is set forth in which new construction goes before expansion, providing a reference for highway tunnels and similar underground works.
HUANG Lun-Hai- 1,
3 Qian-Qi-Hu- 1,
2
.Study on Excavation Schemes for the Redevelopment Construction of Highway Tunnels with Large Sections[J] MODERN TUNNELLING TECHNOLOGY, 2016,V53(5): 145-153
2016, Vol. 53 