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Coursework sample - Sheet Pile Design.
Engineering and Construction
Pages 8 (2008 words)
Sheet Pile Design.
Chang-Yu (2006, pp 126-127) stated; “when the shear stress at a point in soil exceeds or equals the shear strength of soil at the point, the point is in the failure state”…
The latter is caused by earth pressures reaching the limiting state on both side of a considered retaining structure, which thereafter moves towards the excavated area until the full-zone failure is reached. As movement can occur on the bottom part of the wall, the analysis of the structure will be taken as a free body. Thus there will be modified free earth support method (The free earth support revised method) and fixed earth support method. It is worth mentioning that both methods have assumed that active stress condition have been fully developed behind the retaining wall while the passive stress is right in front of the structure. This will allow for calculation using coulomb or Boussinesq theories that consider the actual stress distribution. 1. Modified free earth support method of analysis According to Clayton et al (1993, pp213-214), this method often gives the most economical design for retaining walls. For structure such as cantilever wall, the soil at the lower part of the pile should be strong enough to resist overturning moments. As shown in the above figure, the passive zone should be adequate in order to prevent lateral deflection and rotation at the lower end of the wall. ...
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