Open AccessResearch on tunnel ground settlement characteristics by shield method and pipe-jacking method based on numerical simulation
Author(s) -
Tingyu Lin,
Jian Gong
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/531/1/012040
Subject(s) - jacking , shield , settlement (finance) , geotechnical engineering , excavation , tunnel construction , geology , engineering , petrology , art , performance art , world wide web , computer science , payment , art history
Based on a shield tunnel, the ground settlement by shield method and pipe-jacking method in straight tunnel and curve tunnel was studied. The ground settlement curves by the two methods were analyzed by numerical simulation. Compared with straight tunnel, the ground settlement trough in curve tunnel is shifted to the bending direction by about 0.5D. The overall ground settlement difference between shield and pipe-jacking method is relatively small in straight tunnel, and the settlement in curve tunnel by pipe-jacking method is more than that by shield method. With the excavation of the tunnel, the ground settlement trend in curve tunnel is more obvious than that in straight tunnel. And the settlement difference is relatively large in the middle of the tunnel for both straight tunnel and curve tunnel.