Three-dimensional multilayer cylindrical tunnel model for calculating train-induced dynamic stress in saturated soils

This study proposes an improved tunnel model for evaluating train-induced dynamic stress in saturated soils, which can consider multiple moving loads, grouting layer and pore-water pressure. Using Shanghai Metro’s actual parameters for train speed, tunnel, grouting layer and soils, the analysis of t...

Full description

Saved in:
Bibliographic Details
Published inComputers and geotechnics Vol. 80; pp. 333 - 345
Main Authors Di, Honggui, Zhou, Shunhua, He, Chao, Zhang, Xiaohui, Luo, Zhe
Format Journal Article
LanguageEnglish
Published New York Elsevier Ltd 01.12.2016
Elsevier BV
Subjects
Dynamic stress
Geographical variations
Grouting
Hydrostatic pressure
Loads (forces)
Mechanical stimuli
Moving loads
Pore water pressure
Saturated soils
Shear stress
Shield tunnel
Soil
Soil analysis
Soil dynamics
Soil investigations
Soil layers
Soil stresses
Soils
Spatial analysis
Spatial distribution
Stress concentration
Subways
Three dimensional models
Train load
Tunnels
Water pressure
Shield tunnel
Dynamic stress
Saturated soils
Train load
Online AccessGet full text

Cover

More Information
Summary:This study proposes an improved tunnel model for evaluating train-induced dynamic stress in saturated soils, which can consider multiple moving loads, grouting layer and pore-water pressure. Using Shanghai Metro’s actual parameters for train speed, tunnel, grouting layer and soils, the analysis of the spatial distribution of dynamic stress for soils and stress state of various locations under moving train loads shows that neglecting effects such as pore-water pressure can lead to underestimating dynamic normal stress and overestimating dynamic shear stress in the soils below tunnel. This model can be further extended to investigate principal stress axes rotations and tunnel settlement.
ISSN:0266-352X
1873-7633
DOI:10.1016/j.compgeo.2016.08.005