Open AccessMeasured Deformation of Pipe-Roof during Box Culvert Jacking in Soft Ground
Author(s) -
Cheng Chen,
Mengbo Liu,
Shaoming Liao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/719/3/032047
Subject(s) - jacking , culvert , deformation (meteorology) , roof , geotechnical engineering , joint (building) , geology , arch , structural engineering , excavation , engineering , art , oceanography , performance art , art history
RBJ method is suitable for shallow covering and micro-disturbed underpassing project. In this paper, the pipe deformation induced by box culvert jacking is analyzed. The research shows that: (1) The closed pipe-roof frame presented a phenomenon of expanding outward, namely the uplift of top pipe and the settlement of bottom pipe. (2) Along the jacking direction, the deformation of pipes was positioned over the box culvert structure and about 10m in front of the excavation face. (3) Due to the bounded constraint of diagram wall, it’s prone to be a reverse deformation at joint between pipe and diagram wall, and resulting in a wave-type deformation pattern.