Study on the interface shear strength of soil nails in a Completely Decomposed Granite soil by laboratory pullout tests and large-size direct shear box tests

Jianhua Yin, Lok Man Chu, Li Jun Su

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

Two laboratory pull-out boxes were developed to investigate the interface shear strength behaviour of a soil nail and a surrounding soil. The soil was a typical Completely Decomposed Granite (CDG) soil taken from a soil nail stabilized slope site in Hong Kong. In addition to the pull-out box tests, a large-size direct shear box was also used to measure the interface shear strength between the CDG soil and a cement grout plate. A number of laboratory pull-out tests and large-size shear box tests were performed with a cement grouted nail (or cement grout plate) in the CDG soil. Major results are presented and discussed in the paper. The results are used to examine the influence of (a) overburden pressure, (b) soil degree of saturation, (c) surface roughness of soil nail, (d) stress release in drill hole, and (e) the interface dilation on the interface shear strength.
Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering
Subtitle of host publicationGeotechnology in Harmony with the Global Environment
Pages2617-2620
Number of pages4
Volume4
Publication statusPublished - 1 Dec 2005
Event16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005 - Osaka, Japan
Duration: 12 Sep 200516 Sep 2005

Conference

Conference16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005
CountryJapan
CityOsaka
Period12/09/0516/09/05

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

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