Estimation of K 0 in sand using DMT results

Moon Joo Lee, Sung Kun Choi, Mintae Kim, Woojin Lee

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

Abstract

At-rest coefficient of earth pressure, K 0, has been known to be an indirect property reflecting the stress history of sand. In this study, a series of CPTs and DMTs are performed in the calibration chamber to develop the method estimating K 0 value. The method is based on the relation K D/K 0=χ(E Dm′) δ, which is developed by combining two relations such as E Dm′-ψ and K D/K 0-ψ. It is verified that the relation between K D/K 0 and E Dm′ works well for both Busan and Ticino sands. The suggested method is observed to provide more accurate K 0 value than previous ones do, and it is applicable to OC sand as well as NC sand. Main advantage of the suggested method is to estimate the K 0 value using only DMT results. As both K D and E D values are measured simultaneously in the same penetration, the spatial variation of sub-soil condition does not affect the accuracy of estimated K 0 value.

Original languageEnglish
Title of host publication14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
Publication statusPublished - 2011 Dec 1
Event14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011 - Hong Kong, China
Duration: 2011 May 232011 May 27

Other

Other14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011
CountryChina
CityHong Kong
Period11/5/2311/5/27

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ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

Cite this

Lee, M. J., Choi, S. K., Kim, M., & Lee, W. (2011). Estimation of K 0 in sand using DMT results. In 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering