An Approximate Prediction of Metro Pit’s Sub-Step Excavation

Wen Wang; Hong Shan Liu

doi:10.4028/www.scientific.net/AMM.90-93.1926

Paper Titles

Analysis on Influence of Shield Tunnel Crossing under Intercity High-Speed Railway Station
p.1904

Numerical Simulation of Lining’s Mechanical Behavior in Subway Tunnel
p.1911

The Pile Reinforcement Effect to the Displacement of Geotechnical Materials in the Stratified Rock Slope
p.1916

Study on Poisson Ratio of Soil-Rock Mixture in Low Strain
p.1921

An Approximate Prediction of Metro Pit’s Sub-Step Excavation
p.1926

Numerical Simulation Research on Earthquake Induced Dynamic Responses of Underground Tunnel
p.1931

Stability Analysis of Tunnel Surrounding Rock and Shotcrete Lining and Rock Bolts Based on Strength Reduction Finite Element Method
p.1936

The Research of Seismic Active Earth Pressure with Mode of Translation by Horizontal Slices Analysis Method and Shaking Table Tests
p.1942

3D Finite Element Simulation on During Shield Tunneling
p.1950

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93An Approximate Prediction of Metro Pit’s Sub-Step...

An Approximate Prediction of Metro Pit’s Sub-Step Excavation

Abstract:

To combine the characters of metro pits and time-space effect, an approximate prediction method is studied. Sub-step excavation width, depth, unsupported exposure time and space effect are the main reasons for the displacement of excavation. To calculate the comparative displacement ratios of different parameters variational conditions and standard excavation condition, the displacement effective modulus of every parameter are obtained, and the differences of every layer excavation are also considered. The displacement of excavation can be predicted when the excavation parameters changed based on this method, and the displacement can be controlled by modulating the excavation parameters.