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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 612760, 9 pages
http://dx.doi.org/10.1155/2015/612760
Research Article

Evaluation of an Improved Technique for Geosynthetic-Reinforced and Pile-Supported Embankment

1Key Laboratory of Highway Construction and Maintenance Technology in Loess Region, Shanxi Transportation Research Institute, Taiyuan 030006, China
2Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Chengdu 610031, China
3Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA

Received 1 May 2015; Revised 27 June 2015; Accepted 28 June 2015

Academic Editor: João M. P. Q. Delgado

Copyright © 2015 Jun Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

With a large number of applications of conventional technique for geosynthetic-reinforced and pile-supported (GRPS) embankment (called CT embankment), many deficiencies have been exposed. In view of the deficiencies, an improved technique, fixed-geosynthetic-reinforced and pile-supported embankment (called FGT embankment), is developed. To investigate the performance of the FGT embankment, the comparison analyses and parametric studies are conducted by Finite Element Method (FEM). The influencing factors investigated include elastic modulus of soil, tensile stiffness of geosynthetics, pile length, pile spacing, and pile elastic modulus. In addition, the cost evaluation for the FGT embankment and CT embankment is also made. The results show that the FGT embankment can significantly reduce the settlement and differential settlement, enhance the stability, and provide an economical and effective measure for the construction of high embankment at the bridge approach.