Analysis of Overturning Stability for Broken Back Retaining Wall by Considering the Second Failure Surface of Backfill
In the traditional analysis of overturning stability for broken back retaining wall, pressures acting on the upper and the lower parts of wall are calculated independently based on the hypotheses that earth pressure is linear distribution, and its resultant thrust is the vector sum of the pressures acting on the two parts; The existence of the second failure surface of backfill is judged by the formula of the critical angle for wall with gentle back as derived from Rankine theory. Not only this method is complicated, but also the relevant calculating results are tend to be unsafe Therefore, aiming at these problems, formulas for calculating the pressure on the second failure surface and the safety factor against overturning were derived by the horizontal differential element method considering the occurrence of the second failure surface. Then the traditional methods and the proposed one were compared by case studies. The results show that it is unsafe to design broken back retaining wall by these traditional methods and the critical angle formula for wall with gentle back is not suit for broken back retaining wall.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784410493
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Yang, Heping
- Liao, Wenzhou
- Zhong, Zhiyong
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Conference:
- GeoHunan International Conference: Challenges and Recent Advances in Pavement Technologies and Transportation Geotechnics
- Location: Changsha Hunan, China
- Date: 2009-8-3 to 2009-8-6
- Publication Date: 2009
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 142-150
- Monograph Title: Slope Stability, Retaining Walls, and Foundations: Selected Papers From the 2009 GeoHunan International Conference
Subject/Index Terms
- TRT Terms: Backfilling; Earth pressure; Foundations; Geotechnical engineering; Retaining walls; Slope failure; Slope stability
- Subject Areas: Bridges and other structures; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01142156
- Record Type: Publication
- ISBN: 9780784410493
- Files: TRIS
- Created Date: Oct 20 2009 7:41AM