Research Article | OPEN ACCESS
Numerical Analysis of Effect of Back Berm in Road Engineering
1Jiequn Liu, 2Luwang Chen and 3Jili Wang
1Department of Computer Science and Technology, Key Lab of Network and Intelligent Information Processing, Hefei University, Hefei 230601, China
2School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009
3Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
Research Journal of Applied Sciences, Engineering and Technology 2013 18:4540-4545
Received: October 17, 2012 | Accepted: December 17, 2012 | Published: May 05, 2013
Abstract
Based on the nonlinear finite element method, the basic characters of road engineering reinforced with back berm are studied. It is found that there is no influence on maximal vertical settlement and distribution of vertical settlement in the scope of original embankment by back berm, only the vertical settlement of foundation under back berm enlarged by back berm. The lateral displacement of embankment could be reduced by back berm, which reduced further by width of back berm enlarged. The stability of embankment increased rapidly with the width of back berm enlarged. But when the width of back berm reach a critical value, the stability of embankment is no more increased with the width of back berm enlarged. In order to utilize land effectively, the width of back berm should not be bigger than the critical value. The critical value of width of back berm could be calculated with the corresponding parameters of road engineering. There is almost no influence on stability of embankment by gravity of back berm. It is suggested to fill the back berm by the soil with big cohesive strength and big internal friction angle.
Keywords:
Back berm, lateral displacement, stability, vertical settlement,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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