Investigating on the performance of retrofitted trench with Leca in reducing ground vibrations

Document Type : Research Article

Authors

1 Department of Civil Engineering, Roudehen Branch, Islamic Azad University, Roudehen, Iran

2 Department of Civil Engineering, East Tehran Branch, Islamic Azad University, Tehran, Iran

3 Department of Civil Engineering, Rudehen Branch, Islamic Azad University, Rudehen, Iran

4 Assistant Professor, Department of Civil Engineering, Roudehen Branch, Islamic Azad University, Roudehen, Iran

Abstract

Environmental vibrations can have a significant impact on noise pollution and the health of the residents of buildings adjacent to the vibration sources. Therefore, the studies conducted in the last two decades on reducing vibrations have attracted a lot of attention from researchers. In this study, the effect of different types of improved trenches with Leca lightweight aggregate, including single and double-walled trenches in both active and passive modes, has been investigated, using the combination of Plexis3D finite element software and Python programming language, and the models with the results of other researches. It has been validated and also, and a parametric study has been done to evaluate the effect of geometrical factors including depth, width, and length for both systems. The obtained results indicate that in order to achieve an acceptable amount of trench efficiency, the depth of 0.8λr and 1λr is sufficient as the optimal depth for single and wall systems, respectively, and considering the effect of the width of the trench filled with Leca, a width equal to 0.2λr and 0.15λr is enough to reach the optimal width for single-wall and double-wall systems, respectively. Also, for passive design, the role of depth can be ignored for single and double-walled barriers, because trench width plays a more important role compared to trench depth. Moreover, to achieve an acceptable single-wall system, the normal width should be increased to about 0.2λr.

Keywords

Main Subjects

References

  1. Miller, H. Pursey, E.C. Bullard, On the partition of energy between elastic waves in a semi-infinite solid, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 233(1192) (1955) 55-69.
  2. E. Richart, J.R. Hall, R.D. Woods, Vibrations of soils and foundations, (1970).
  3. M. Al-Hussaini, Vibration isolation by wave barriers, State University of New York at Buffalo, (1992).
  4. R. Massarsch, Vibration isolation using gas-filled cushions, in: Soil dynamics symposium in honor of professor Richard D. Woods, (2005), pp. 1-20.
  5. Mahdavisefat, H. Salehzadeh, A. Heshmati, Full-scale experimental study on screening effectiveness of SRM-filled trench barriers, Géotechnique, 68(10) (2018) 869-882.
  6. Coulier, V. Cuéllar, G. Degrande, G. Lombaert, Experimental and numerical evaluation of the effectiveness of a stiff wave barrier in the soil, Soil Dynamics and Earthquake Engineering, 77 (2015) 238-253.
  7. Gao, Q. Zhang, J. Chen, Q. Chen, Field experiments and numerical analysis on the ground vibration isolation of wave impeding block under horizontal and rocking coupled excitations, Soil Dynamics and Earthquake Engineering, 115 (2018) 507-512.
  8. Bose, D. Choudhury, J. Sprengel, M. Ziegler, Efficiency of open and infill trenches in mitigating ground-borne vibrations, Journal of Geotechnical and Geoenvironmental Engineering, 144(8) (2018) 04018048.
  9. D. Woods, Screening of surface wave in soils, Journal of the soil mechanics and foundations division, 94(4) (1968) 951-979.
  10. Ulgen, O. Toygar, Screening effectiveness of open and in-filled wave barriers: a full-scale experimental study, Construction and Building Materials, 86 (2015) 12-20.
  11. Alzawi, M.H. El Naggar, Full scale experimental study on vibration scattering using open and in-filled (GeoFoam) wave barriers, Soil Dynamics and Earthquake Engineering, 31(3) (2011) 306-317.
  12. Pu, Z. Shi, H. Xiang, Feasibility of ambient vibration screening by periodic geofoam-filled trenches, Soil Dynamics and Earthquake Engineering, 104 (2018) 228-235.
  13. Çelebi, S. Fırat, G. Beyhan, İ. Çankaya, İ. Vural, O. Kırtel, Field experiments on wave propagation and vibration isolation by using wave barriers, Soil dynamics and earthquake engineering, 29(5) (2009) 824-833.
  14. Murillo, L. Thorel, B. Caicedo, Ground vibration isolation with geofoam barriers: Centrifuge modeling, Geotextiles and Geomembranes, 27(6) (2009) 423-434.
  15. Beskos, B. Dasgupta, I. Vardoulakis, Vibration isolation using open or filled trenches: Part 1: 2-D homogeneous soil, Computational mechanics, 1 (1986) 43-63.
  16. E. Beskos, Boundary element methods in dynamic analysis: Part II (1986-1996), (1997).
  17. Ahmad, T. Al-Hussaini, Simplified design for vibration screening by open and in-filled trenches, Journal of geotechnical engineering, 117(1) (1991) 67-88.
  18. Haupt, Wave propagation in the ground and isolation measures, (1995).
  19. Haupt, Isolation of vibrations by concrete core walls, in: Proceedings of the ninth international conference on soil mechanics and foundation engineering, (1977), pp. 251-256.
  20. D. Ekanayake, D. Liyanapathirana, C.J. Leo, Attenuation of ground vibrations using in-filled wave barriers, Soil Dynamics and Earthquake Engineering, 67 (2014) 290-300.
  21. Liyanapathirana, S.D. Ekanayake, Application of EPS geofoam in attenuating ground vibrations during vibratory pile driving, Geotextiles and Geomembranes, 44(1) (2016) 59-69.
  22. Saikia, Numerical study on screening of surface waves using a pair of softer backfilled trenches, Soil dynamics and earthquake engineering, 65 (2014) 206-213.
  23. Schevenels, G. Lombaert, Double wall barriers for the reduction of ground vibration transmission, Soil Dynamics and Earthquake Engineering, 97 (2017) 1-13.
  24. Esmaeili, J.A. Zakeri, S.A. Mosayebi, Investigating the optimized open V-shaped trench performance in reduction of train-induced ground vibrations, International Journal of Geomechanics, 14(3) (2014) 04014004.
  25. -A. Zakeri, M. Esmaeili, S.-A. Mosayebi, Numerical investigation of the effectiveness of a step-shaped trench in reducing train-induced vibrations, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 228(3) (2014) 298-306.
  26. Alzawi, M.H. El Naggar, P.D. Eng, Numerical investigations on vibration screening by in-filled geofoam trenches, in: 64rd Canadian Geotechnical Conference, Toronto, ON, Canada, (2011).
  27. L. Kuhlemeyer, J. Lysmer, Finite element method accuracy for wave propagation problems, Journal of the Soil Mechanics and Foundations Division, 99(5) (1973) 421-427.
  28. -J. Dolling, Abschirming von erschitterungen durch bodenschlitze, Die Bautecnic, 5 (1970) 151-158.
  29. Kattis, D. Polyzos, D. Beskos, Modelling of pile wave barriers by effective trenches and their screening effectiveness, Soil Dynamics and Earthquake Engineering, 18(1) (1999) 1-10.
  30. Sprengel, J., Praktische Anwendung injizierter Isolierkörper als Erschütterungsreduktionsmaß nahme (Doctoral dissertation, Dissertation, RWTH Aachen University, (2017).
  31. Zukri, Application of Finite Element Modelling to Lightweight Aggregate (LECA) Column-Raft, International Journal of Integrated Engineering, 11(9) (2019) 212-223.
  32. Tavasoli, M. Ghazavi, Wave propagation and ground vibrations due to non-uniform cross-sections piles driving, Computers and Geotechnics, 104 (2018) 13-21.
Amirkabir Journal of Civil Engineering
Volume 56, Issue 4
2024
Pages 477-496

Files

Share

How to cite

Statistics