Stability Analysis of Gabion wall with Tieback in Seismic Regions

Hamid Asadpour, Tohid Akhlaghi

Abstract


One of the most important issues in the construction of highways, mountain and urban roads is known as slope stabilization. If the necessary actions for protection are not considered, it could lead to problems and events such as landslides, settlements and even destruction of roads. There are many methods for stabilizing slopes such as Gabion walls and Tiebacks. This study can be used as the beginning of a new synthetic method where the Gabion wall is combined with Tiebacks. Gabion walls and tiebacks can be known as the most flexible methods of slope stabilization methods, because of this reason, if they can be combined with each other, it should show very good results in front of dynamic and even static forces. This combination is the novel point of this research. In this study at first, the gabion wall will be analysed in different loading conditions, and then to deal with earthquake dynamic forces the tiebacks will be used to increase the gabion walls stability.

The software that is used in this study is GEO5 software, nowadays this software can be introduced as one of the best slope stability analysis software's. The results of this study showed that the designed gabion wall could be stable in dense silty gravel soil (GM) in 8.5-meter slope, and with magnitude of 0.25 horizontal coefficient of Manjil earthquake, but in the same geometry and material condition and impact of 0.4 magnitude horizontal coefficient of Bam earthquake it couldn't be stable alone. In this condition four rows of 18 meter tiebacks could stable the gabion wall very well. In this model, under loading condition 3 (with horizontal and vertical pseudo-static coefficient of Bam earthquake) that had the most vertical pseudo-static coefficient, the 23-meter tieback anchors with 12-degree inclination respect to horizontal could stable the considered gabion wall. This result could show that, the combination of gabion walls with tieback anchors gives a satisfactory result and it is an efficient and helpful method for stability of slopes in front of earthquake and dynamic forces.

Keywords


Gabion Wall; Tieback; Slope Stability; Dynamic Investigation; Geo5 Software.

References


Oosthoek, Jorg., "The Stability of Synthetic Gabions in Waves." Thesis for degree of Master of science. Delft University of Technology, 2008.

Racin, J. A., and Thomas P. Hoover, Gabion mesh corrosion: Field Study of Test Panels and Full-scale Facilities, FHWA-CA-TL-99-23, 2001.

Elton, David J., and PE James E. Whitbeck. "Tieback wall design and construction." Final Report to Alabama Highway Research Center (1997): 1-4.

Weatherby, D. E. Tiebacks. Federal Highway Administration, Report No. FHWA RD-82/047, 1982.

Burman, A., S. P. Acharya, R. R. Sahay, and D. Maity. "A comparative study of slope stability analysis using traditional limit equilibrium method and finite element method." ASIAN JOURNAL OF CIVIL ENGINEERING (BHRC) 16, no. 4 (2015): 467-492.

Aryal, K. P., "Slope Stability Evaluations by Limit Equilibrium and Finite Element Methods." Doctoral Thesis at NTNU, Norwegian University of Science and Technology. ISBN 82-471-7881-8, 2006.

Matthews, Carol, Zeena Farook, and Peter Helm. "Slope stability analysis–limit equilibrium or the finite element method." Ground Engineering (2014): 22-28.

Kramer, Steven L., and Nils W. Lindwall. "Dimensionality and directionality effects in Newmark sliding block analyses." Journal of Geotechnical and Geoenvironmental Engineering 130, no. 3 (2004): 303-315.

Nadi, B., F. Askari, and O. Farzaneh. "SEISMIC PERFORMANCE OF SLOPES IN PSEUDO-STATIC DESIGNS WITH DIFFERENT SAFETY FACTORS." Iranian Journal of Science and Technology. Transactions of Civil Engineering 38, no. C2 (2014): 465.

Pathmanathan, R., "Numerical Modelling of Seismic Behaviour of Earth-Retaining Walls." Thesis for Master Degree, Rose School, June 2006.

Kumar, K., "Basic Geotechnical Earthquake Engineering." New Age International (P) Limited, Publishers. ISBN (13): 978-81-224-2620-5, 2008.

Kramer, S.L., "Geotechnical earthquake engineering." Prentice-Hall, New Jersey, USA, ISBN: 0-13-374943-6, 1996.

Jibson, Randall W. "Regression models for estimating coseismic landslide displacement." Engineering Geology 91, no. 2 (2007): 209-218.

Bozbey, Ilknur, and Ozgun Gundogdu. "A methodology to select seismic coefficients based on upper bound “Newmark” displacements using earthquake records from Turkey." Soil Dynamics and Earthquake Engineering 31, no. 3 (2011): 440-451.

Melo, Cristiano, and Sunil Sharma. "Seismic coefficients for pseudostatic slope analysis." In 13 th World Conference on Earthquake Engineering, Vancouver, Canada. 2004.

Hynes-Griffin, M. E., and Franklin, A. G, "Rationalizing the seismic coefficient method." U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, Mississippi, miscellaneous, 1984.

Geo5 user guide (edition 2017), fine civil engineering software, 2016.

Berberian, Manuel, and Richard Walker. "The Rudbār Mw 7.3 earthquake of 1990 June 20; seismotectonics, coseismic and geomorphic displacements, and historic earthquakes of the western ‘High-Alborz’, Iran." Geophysical Journal International 182, no. 3 (2010): 1577-1602.

Nadim, F., " Bam Earthquake of 26 December 2003 (ICG Reconnaissance Mission)" For International Centre for Geohazards, Norway, 2004.


Full Text: PDF

Refbacks

  • There are currently no refbacks.




Copyright (c) 2017 Hamid Asadpour

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
x
Message