Interaction Between Soil Foundation and Subway Shield Tunnel

✍ Scribed by Zhen-Dong Cui

• Publisher: Springer
• Year: 2023
• Tongue: English
• Leaves: 227
• Category: Library

✦ Synopsis

This book addresses the interaction between the soil foundation and the subway shield tunnels under the vibration loading, including the dynamic response of the track inside the shield tunnel, the dynamic properties of soil around the subway shield tunnel, the mechanical properties of subway tunnel, and the long-term settlement of the subway tunnel. Given its scope, it offers a valuable reference guide for designers and construction researchers alike, as well as senior undergraduates and graduate students at colleges and universities.

✦ Table of Contents

Preface
Contents
About the Author
List of Figures
List of Tables
1 Introduction
1.1 Background
1.2 Dynamic Response of Subway Track
1.3 Vibration Induced by Subway Load with Track Irregularity
1.4 Dynamic Response of Around Soil and Subway Shield Tunnel
1.5 Mechanical Properties of Subway Shield Tunnel
1.6 Long-Term Settlement of Subway Shield Tunnel
References
2 Dynamic Response of Subway Track
2.1 Introduction
2.2 Theoretical Analysis of Track Model
2.2.1 Lower Than the First Cut-Off Frequency
2.2.2 Higher Than the First Cut-Off Frequency and Lower Than the Second Cut-Off Frequency
2.2.3 Higher Than the Second Cut-Off Frequency
2.3 Case Study for Theoretical Model
2.3.1 Dispersion Curve and Cut-Off Frequency
2.3.2 Critical Velocity
2.4 Analysis of Parameters for Theoretical Model
2.4.1 Variations of the Load Frequency
2.4.2 Variations of the Load Velocity
2.4.3 Dynamic Response Along the Beams
2.4.4 Variations of the Bending Stiffness
2.4.5 Variations of the Elastic Coefficients
2.4.6 Variations of the Damping Coefficients
2.5 Conclusions
References
3 Vibrations Induced by Subway Load with Track Irregularity
3.1 Introduction
3.2 Simulating Subway Random Load with Excitation of Track Vertical Profile Irregularity
3.3 Finite Element Model
3.4 Numerical Simulation of Dynamic Response
3.4.1 Time-Domain Characteristic of Vertical and Longitudinal Acceleration
3.4.2 Frequency-Domain Characteristic of Vibration Acceleration
3.4.3 Analysis of Ground Vibration Attenuation
3.5 Conclusions
References
4 Dynamic Response of Around Soil and Subway Shield Tunnel
4.1 Introduction
4.2 Dynamic Triaxial Tests
4.2.1 Test Principle
4.2.2 Test Procedure
4.2.3 Test Scheme
4.2.4 Hysteresis Loop
4.2.5 Shear Modulus and Damping Ratio
4.3 Numerical Simulation of Dynamic Response of Around Soil and Shield Tunnel
4.3.1 Finite Difference Model
4.3.2 Dynamic Damping
4.3.3 Dynamic Response of Soft Soils Around Lining
4.3.4 Dynamic Response of Lining
4.3.5 Influence of Velocity
4.3.6 Influence of Interface
4.4 Conclusions
References
5 Mechanical Properties of Subway Shield Tunnel
5.1 Introduction
5.2 Theoretical Model of Functionally Graded Subway Shield Tunnel
5.2.1 Basic Assumptions
5.2.2 Governing Equations
5.2.3 Building Model
5.2.4 Solutions of Internal Force Coefficients
5.3 Single Factor Test on the Functionally Graded Subway Tunnel Model
5.4 Orthogonal Test on the Functionally Graded Subway Tunnel Model
5.4.1 Deformation Mode Analysis
5.4.2 Section Moment Analysis
5.5 Verification of the Numerical Simulation
5.6 Conclusions
References
6 Long-Term Settlement of Subway Shield Tunnel
6.1 Introduction
6.2 Theoretical Analysis of Long-Term Settlement of Subway Shield Tunnel and Numerical Verification
6.2.1 Theoretical Model
6.2.2 Numerical Verification
6.3 Numerical Simulation of Long-Term Settlement of Subway Shield Tunnel
6.3.1 Model Establishment
6.3.2 Simulation Results
6.4 In-Site Monitoring of Long-Term Settlement of Subway Shield Tunnel
6.4.1 Arrangement of Monitoring Benchmarks
6.4.2 Implementation of Measurement
6.4.3 Analysis of Settlements of the Whole Subway Line 1
6.4.4 Analysis of Settlements of Running Tunnels and Subway Stations
6.4.5 Differential Settlements of Running Tunnels
6.5 Prediction of Long-Term Settlement of Subway Shield Tunnel
6.5.1 Prediction of Long-Term Settlement by Cubic Curve Fitting
6.5.2 Prediction of Long-Term Settlement by GM (1, 1) and ARMA (N, M)
6.6 Prediction of Settlement Trough of Subway Shield Tunnel
6.6.1 Settlement Behavior of Subway Tunnels
6.6.2 Settlement Trough of Subway Tunnels
6.6.3 Prediction Model Building
6.6.4 A Case Study
6.7 Conclusions
References
7 Conclusions and Prospects
7.1 Conclusions
7.2 Prospects for Further Study
Appendix A GM (1, 1)
Appendix B ARMA (N, M) Model
Appendix C Major Published Works of the Book Author