Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (6): 890-893.DOI: 10.12068/j.issn.1005-3026.2014.06.029

• Resources & Civil Engineering • Previous Articles     Next Articles

ElastoPlastic Constitutive Model of SoilStructure Interface with Slurry

ZENG Xinfa1, PENG Zhenbin1, HE Jie2, PENG Kai3,4   

  1. 1School of Geoscience and InfoPhysics, Central South University, Changsha 410083, China; 2School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China; 3HydroChina Zhongnan Engineering Corporation, Changsha 410014, China; 4Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China.
  • Received:2013-07-02 Revised:2013-07-02 Online:2014-06-15 Published:2014-04-11
  • Contact: ZENG Xinfa
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Abstract: The mechanical behaviors of the interface between coarsegrained soil and concrete were investigated by simple shear tests under the conditions of bentonite slurry. The results indicate that the peak strength and the position of the shear dilatancy are related to normal stress. The shear strain corresponding to the shear dilatation appears to be ahead of that corresponding to the peak value of the shear stress. An elastoplastic constitutive model of soilstructure interface in considering of shear dilatancy and stressstrain softening was formulated in the framework of generalized potential theory. The entire model parameters can be identified by experimental tests. Corresponding finite element program was complied by extending the model to the case of 3D space. Combined with measured values of indoor cutoff wall tests in model slot, the validity of the model was verified and its superiority was demonstrated based on comparison with Goodman model.

Key words: simple shear test, bentonite slurry, generalized potential theory, constitutive model

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