Utilization of Horizontally Buried Hollow Pipes for Ground Vibration Mitigation in Public Transport Infrastructure: Innovative Technique
Publication: International Journal of Geomechanics
Volume 22, Issue 12
Abstract
Ground vibrations initiated by the passage of vehicles in public transport infrastructure including railways and highways are likely to produce an adverse influence on adjacent structures. Under extreme conditions, this is likely to introduce disastrous consequences. While mitigation of these vibrations is a challenge to geotechnical engineers, adoption of open trenches besides the transport corridors is one of the widely used techniques followed in last few decades. However, it was reported that such techniques initiated several critical problems mostly relevant to the stability problem of those trenches. In this paper, a new technique is proposed for ground vibration mitigation where the open trench is filled with hollow pipes. A two-dimensional (2D) finite-element model is developed and validated to analyze the efficiency of this new technique in ground vibration isolation. The influence of various critical geometric parameters, including the underground water table and elastic modulus of soils, are studied in detail. In addition, the influences of different frequency harmonic load and measured load on the ground vibration reduction by hollow pipes are investigated. Furthermore, a three-dimensional (3D) finite-element model is developed to carry out a comparative study with the 2D modeling. This 3D modeling was applied analyzing the vibration isolation trench with other configurations including different locations of hollow pipes and moving load on the ground vibration isolation. It is observed that the proposed method is not only potentially viable in mitigation of subsurface vibration but also worthwhile for eliminating stability problems in open trenches. The detailed description of the studies conducted has been presented in this paper.
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Acknowledgments
The authors are very grateful for the support from the National Science Fund for Distinguished Young Scholars Grant No. 51725802 and Study on Long-term Performance Evolution and Big Date Analysis for Roadbed of High-speed Railways Grant No. U1934208.
Notation
The following symbols are used in this paper:
- Ar
- average amplitude reduction ratio;
- ARR
- amplitude reduction ratio;
- A0
- displacement or velocity amplitude before trench installation;
- A1
- displacement or velocity amplitude after trench installation;
- d
- pipe diameter;
- Ex, Ey
- soil Young’s modulus along X and Y directions respectively;
- f
- frequency;
- Gxy
- soil shear modulus in XY plane;
- h
- depth of installation;
- i
- normalized inclination angle;
- LR
- Rayleigh wavelength;
- l
- horizontal distance of trench wall from axis of symmetry;
- n
- number of pipes;
- q
- vibrational stress on ground;
- q0
- stress amplitude of ground vibration;
- t
- time;
- Ux, Uy
- displacement components;
- VR
- Rayleigh wave velocity;
- VS
- shear-wave velocity;
- w
- width of trench;
- α
- inclination angle;
- ν
- soil Poisson’s ratio;
- ρ
- soil density; and
- ξ
- damping coefficient.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 22 • Issue 12 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 24, 2021
Accepted: Jun 20, 2022
Published online: Sep 22, 2022
Published in print: Dec 1, 2022
Discussion open until: Feb 22, 2023
ASCE Technical Topics:
- Business management
- Engineering fundamentals
- Finite element method
- Geotechnical engineering
- Geotechnical investigation
- Ground motion
- Infrastructure
- Methodology (by type)
- Mitigation and remediation
- Models (by type)
- Numerical methods
- Practice and Profession
- Public transportation
- Rail transportation
- Three-dimensional models
- Transportation engineering
- Trenches
- Trenchless technology
- Tunneling
- Tunnels
- Two-dimensional models
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Cited by
- Zhonghua Hu, Qingsheng Chen, Changjie Xu, Sudip Basack, Wenjun Luo, Horizontal hollow pipes used as vibration isolation barriers: Numerical modelling and design optimization, Transportation Geotechnics, 10.1016/j.trgeo.2022.100885, 37, (100885), (2022).