Randomized trial reveals construction impacts on soil deformation during river-crossing tunneling.
Key Points
The study aims to investigate the differences in stratum response during river-crossing tunneling and how construction parameters affect deep soil deformation.
Field monitoring and measurement of construction parameters.
Three-dimensional finite element simulation using ABAQUS.
Comparison of onshore and riverbed sections under high-water-pressure conditions.
Riverbed section showed a larger cumulative displacement with more intense soil response due to high-water pressure.
Transverse settlement exhibited a double-peak W-shaped distribution in the riverbed section.
Cutterhead torque had the largest effect on absolute settlement variation, followed by total shield thrust and tunneling speed.