Numerical analysis of sand reinforced with small diameter model steel piles

Hemanta Hazarika, D. Mujah, N. Watanabe, F. Ahmad, Noriyuki Yasufuku

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The use of reinforcement steel bars and passive piles are the oldest method adopted in slope stabilization measure in which, their reinforcing mechanisms are designed to function independently. This research proposes new kind of piles, hereafter called small diameter steel piles (SDSP), which are able to resist both lateral and vertical forces in countermeasure against slope instability. In this paper, the reinforcing effect of different pile arrangement and failure mechanism in different ground densities of each arrangement were compared and examined through laboratory scale experiment (direct shear test) and 2D numerical analysis. The multi-row arrangement of the installed SDSP was observed to accommodate higher loads and larger deflection in overall slope performance as opposed to the conventional passive piles and reinforcing bars. Failure mode in dense ground is apparently governed by soil's shearing resistance mobilized at a higher strain, while bending stiffness of the reinforcing material is more dominant in loose ground regardless of the piles arrangements.

Original languageEnglish
Title of host publicationGA 2012 - 5th Asian Regional Conference on Geosynthetics: Geosynthetics for Sustainable Adaptation to Climate Change
PublisherAsian Center for Soil Improvement and Geosynthetics
Pages653-658
Number of pages6
Publication statusPublished - 2012
Event5th Asian Regional Conference on Geosynthetics of Geosynthetics Asia 2012: Geosynthetics for Sustainable Adaptation to Climate Change, GA 2012 - Bangkok, Thailand
Duration: Dec 13 2012Dec 16 2012

Other

Other5th Asian Regional Conference on Geosynthetics of Geosynthetics Asia 2012: Geosynthetics for Sustainable Adaptation to Climate Change, GA 2012
CountryThailand
CityBangkok
Period12/13/1212/16/12

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All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Global and Planetary Change
  • Atmospheric Science
  • Environmental Engineering
  • Polymers and Plastics

Cite this

Hazarika, H., Mujah, D., Watanabe, N., Ahmad, F., & Yasufuku, N. (2012). Numerical analysis of sand reinforced with small diameter model steel piles. In GA 2012 - 5th Asian Regional Conference on Geosynthetics: Geosynthetics for Sustainable Adaptation to Climate Change (pp. 653-658). Asian Center for Soil Improvement and Geosynthetics.