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Front. Built Environ. | doi: 10.3389/fbuil.2019.00136

Mitigation of Traffic Induced Vibration using Geocell Inclusions

 Amarnath Hegde1* and Hasthi Venkateswarlu1
  • 1Indian Institute of Technology Patna, India

This paper describes the potential use of geocell reinforcement in mitigating the traffic induced vibration. The vibration caused by the vehicular movement was simulated over the unreinforced and geocell reinforced sections using mechanical oscillator. The displacement amplitude and peak particle velocity were measured to understand the vibration mitigation efficacy of geocell. The effect of depth of placement of geocell on the mitigation of vibration parameters was studied. The inclusion of geocell was found effective in reducing the induced vibration based on the experimental results. The vibration mitigation efficacy of geocell was improved significantly at the shallow depth of placement of geocell mattress. The improvement in elasticity of the subgrade was observed maximum when the geocell was placed at a depth of 0.1B from the ground surface. Further, analytical and numerical approaches were used to predict the displacement amplitude versus frequency response of reinforced soil sections. FLAC3D was used for performing the numerical investigation. The geocell was modelled according to its honeycomb shape to acquire the accurate response of geocell reinforced section. Whereas, mass spring dashpot analogy was followed for the analytical evaluation. In overall, the amplitude response predicted from the numerical and analytical studies were found to be in good agreement with the experimental results.

Keywords: Geocell, Traffic vibration, Amplitude reduction ratio, Peak particle velocity, FLAC3D, MSD analogy

Received: 28 Aug 2019; Accepted: 01 Nov 2019.

Copyright: © 2019 Hegde and Venkateswarlu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Amarnath Hegde, Indian Institute of Technology Patna, Patna, 800 013, Bihar, India, ahegde@iitp.ac.in