Lateral earth pressure problems involved with cantilever retaining structures and stability of those structures

Clayton, Scott (2014) Lateral earth pressure problems involved with cantilever retaining structures and stability of those structures. [USQ Project]

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Abstract

Retaining walls provide support for vertical or near vertical grade changes, while also preventing erosion or down slope movement. The backfill is usually associated with an amount of surface strip load, thereby creating lateral pressure which acts onto the non yielding retaining wall. The purpose of this thesis is to calculate mathematically and graphically the lateral earth pressures and how stability of a retaining structure is influenced by these pressures. Calculations are made which will involve Rankine earth pressure theory and Coulomb earth pressure theory. It also involves determining whether there are any correlations between the two theories. Either Rankine’s or Coulomb’s theory is then taken further to investigate the bearing, sliding and overturning with various soil foundation and backfill material. One of these theories will be representing 64 cases, all unique and presenting varying geometries and soil materials, while backfill is considered inclined throughout. From this outline, the factor of safeties is determined in order to identify the most effective scenario.

The upper and lower bound are calculated in order to determine the material base factor of safety. A numerical approach involving software known as OptumG2 is undertaken in order to calculate a strength reduction factor, involving both the upper and lower bound values of each case. From this, a material base factor of safety will be calculated, and an indirect comparison will be concluded.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Civil) project.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Supervisors: Ghabraie, Kazem
Date Deposited: 09 Sep 2015 04:43
Last Modified: 03 Mar 2016 04:24
Uncontrolled Keywords: earth pressure; cantilever; stability; retaining structures; structural stability
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering
URI: http://eprints.usq.edu.au/id/eprint/27314

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