Mitigation of Train-induced Vibration Using EPS Geofoam Filled Trench
Author(s):
Dr. MAINAK MAJUMDER
Keywords:
Ground borne vibrations, EPS Geofoam, vibration screening, FEM, open trench, in-filled trenches.
Abstract
Owing to the havoc infrastructural development the noise in the form of ground vibrations have been inevitable in the urban areas. EPS geofoam has been found to be one of the vast applications of geosynthetics family to mitigate ground vibrations due to high-speed machines/highways, traffics and trains. In the present study an attempt has been made to understand the efficacy of the expanded polystyrene (EPS) Geofoam as an in-filled trench material in reducing train-induced ground vibrations. Base Isolation, tuned mass damper, tuned liquid column damper or magneto-rheological dampers are some of the widely used solutions to minimize the vibrations in structures, but in case of reducing the ground borne shocks; open-trench, in-filled trenches are the most common methods. Thus, to understand the behaviour of the EPS Geofoam in-filled trench a finite element model has been developed using ABAQUS software considering all the parameters like geometric parameters of trench, train speed, EPS density, shear wave velocity mismatch between soil and EPS using commercially available ABAQUS FEM software. The screening efficiency of EPS filled trench has been found to be in the range of 42-65%.
Article Details
Unique Paper ID: 155846

Publication Volume & Issue: Volume 9, Issue 2

Page(s): 148 - 157
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