›› 2012, Vol. 33 ›› Issue (4): 979-985.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Back analysis of initial state of sand from pressuremeter test

HUANG Wen-xiong，YANG Hong-mei，LI Chi-qing   

  1. College of Mechanics and Materials, Hohai University, Nanjing 210098, China
  • Received:2010-09-21 Online:2012-04-13 Published:2012-04-26

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Abstract: The back analysis of pressuremeter test of sand is discussed. The measured data of pressuremeter test are used for inversive determination of the in situ state of the soil instead of the material parameters. The material parameters can be determined from the conventional laboratory tests. The characteristics of new hypoplastic model which is independent of soil state are used. The main contents include: establishment of the numerical model based on the finite element method for the back analysis, and determination of the material parameters for a specific sand using the related data from the literature; verification of the numerical model by simulating laboratory pressuremeter test; further numerical study carried out by changing the initial stress and relative density of soil, and establishment of relation between the measured pressuremeter, the stress and the relative density of sand based on the numerical results, which can be used for the back analysis.

Key words: lateral pressure test, hypoplastic model, numerical modeling, initial state, back analysis

CLC Number: 

  • TU 441+.4
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