Optimum Base Width of Gravity Retaining Walls of Narrow Backfilled with Recycled Materials

The optimum dimensions of narrow backfill width gravity retaining walls backfilled with recycled materials are obtained by considering the four modes of failure, viz overturning of the wall about its toe, sliding of the wall on its base, eccentricity of the resultant force and bearing capacity failure below the base slab. An analytical method is presented to obtain a solution for the active earth pressure exerted by the backfilling of recycled materials like bottom fly ash, course coal refuses, foundry sand, foundry slag, mill tailing, scrap tires, reclaimed asphalt pavement (RAP) and recycled concrete aggregate (RCA). The proposed method uses the limit equilibrium method with planar slip surfaces. Three different failure mechanisms of the active wedge are considered, namely mechanism 1 (active wedge formed by a single block), mechanism 2 (active wedge is composed of two rigid blocks, one slipping with respect to the other) and mechanism 3 (which considers three blocks). Using these three mechanisms, the magnitude of active earth pressure acting on the gravity wall and point of application of active thrust from the bottom of the wall are computed. The influence of various parameters on the optimum dimensions of the gravity retaining wall is presented in the form of design charts.

• Record URL:
  https://doi.org/10.1061/9780784480151.016
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784480151
• Supplemental Notes:
  • © 2016 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Basha, B Munwar
  • Ahmed, Shaik Moin
  • Moghal, Arif Ali Baig
  • Shanker, Kandukuri
• Conference:
  • Geo-Chicago 2016
  • Location: Chicago Illinois, United States
  • Date: 2016-8-14 to 2016-8-18
• Publication Date: 2016

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 149-158
• Monograph Title: Geo-Chicago 2016: Sustainable Materials and Resource Conservation

Subject/Index Terms

• TRT Terms: Backfilling; Bearing capacity; Earth pressure; Failure; Gravity; Reclaimed asphalt pavements; Recycled materials; Retaining walls
• Subject Areas: Bridges and other structures; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01611068
• Record Type: Publication
• ISBN: 9780784480151
• Files: TRIS, ASCE
• Created Date: Aug 11 2016 3:11PM