Seismic Waves Scattering Impact through Tunnel Excavation on Adjacent Monuments Subjected to Far Field Earthquakes

Authors

  • Ehsan Ghobakhloo Department of Civil Engineering, Islamic Azad University-South Tehran Branch, Tehran
  • Mahyar Pourlak Civil Engineering, Hydraulic Structures, Qom University, Iran. Member of Young Researchers Club-Islamic Azad University South Tehran Branch, Tehran
  • Arash Razmkhah Department of Civil Engineering, Islamic Azad University-South Tehran Branch, Tehran

DOI:

https://doi.org/10.9744/ced.17.2.59-66

Keywords:

Scattering of wave, twin tunnel, incident wave direction

Abstract

The study of the effect of seismic wave scattering has attracted extensive attention in the past couple of decades especially in infrastructures like tunnels. A seismic wave, meeting the tunnel, can generate scattering which, in most cases, may incur damages in adjacent structures. In this study, using Finite Element Method (FEM), the effect of seismic wave scattering in far field has been investigated. The twin tunnels of Shiraz subway system are selected as the case study in this research and three far field seismic waves were chosen for time history analyses. Investigating the normal mode (before tunnel construction) in comparison to the excavation mode (after tunnel construction) enables calculation of the effect of displacement in adjacent structures. The analysis results indicate there is a significant difference between before and after tunnel construction (P-value<0.05). Accordingly, the influence of constructing a tunnel on adjacent surface structures is very important for tunnel design.

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[CrossRef]

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Published

2015-09-30

How to Cite

Ghobakhloo, E., Pourlak, M., & Razmkhah, A. (2015). Seismic Waves Scattering Impact through Tunnel Excavation on Adjacent Monuments Subjected to Far Field Earthquakes. Civil Engineering Dimension, 17(2), 59–66. https://doi.org/10.9744/ced.17.2.59-66

Issue

Vol. 17 No. 2 (2015): SEPTEMBER 2015

Section

Articles

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