Effects of adjacent rock face inclination on earth pressure at-rest

Yung-Show Fang*, Cheng Liu, Fu Jyun Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper studied the effects of an adjacent inclined rock face on the at-rest earth pressure acting on a rigid retaining wall. Horizontal earth pressures in loose (Dr = 35%) and compacted (Dr = 72%) dry Ottawa sand were measured. A steel interface plate with inclination angles 0o, 45o, 60o, 70o, and 80o were used to simulate the inclined rock face. The measured distribution of earth pressure was not linearly with depth, and was mostly lower than Jaky's solution. As the rock face inclination angle increased, the magnitude of at-rest soil thrust decreased, and the total thrust rose to a higher location. With the inclination angle of 80o, only a small amount of sand was filled in the narrow gap between the wall and the inclined interface. The vertical stress in the soil slice was partially resisted by the friction on the nearby inclined rock face. With decreasing vertical stress in the soil mass, the horizontal stress acting on the wall decreased.

Original languageEnglish
Title of host publicationProceedings of the 22nd (2012) International Offshore and Polar Engineering Conference
Pages836-841
Number of pages6
StatePublished - 17 Sep 2012
Event22nd International Offshore and Polar Engineering Conference, ISOPE-2012 - Rhodes, Greece
Duration: 17 Jun 201222 Jun 2012

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference22nd International Offshore and Polar Engineering Conference, ISOPE-2012
CountryGreece
CityRhodes
Period17/06/1222/06/12

Keywords

  • Constrained backfill
  • Earth pressure at-rest
  • Model test
  • Retaining wall
  • Sand

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