YANG Aiwu, LEI Chaowei, LIU Qi, KONG Lingwei. 2016: STUDY ON STRUCTURE CHARACTERISTICS CONSIDERING STRESS PATHS OF DREDGER FILL. JOURNAL OF ENGINEERING GEOLOGY, 24(6): 1199-1206. DOI: 10.13544/j.cnki.jeg.2016.06.020
    Citation: YANG Aiwu, LEI Chaowei, LIU Qi, KONG Lingwei. 2016: STUDY ON STRUCTURE CHARACTERISTICS CONSIDERING STRESS PATHS OF DREDGER FILL. JOURNAL OF ENGINEERING GEOLOGY, 24(6): 1199-1206. DOI: 10.13544/j.cnki.jeg.2016.06.020

    STUDY ON STRUCTURE CHARACTERISTICS CONSIDERING STRESS PATHS OF DREDGER FILL

    • Using the WF Automatic Triaxial System, conventional triaxial tests under consolidated undrained condition have been carried out on the dredger fill of Tianjin Binhai New Area. And the tests of different stress paths under K0 consolidation condition were carried out. Scanning electron microscopy (SEM) tests also have been carried out. The test results showed that the structure yield when the strain exceed 2%.The structural yielding stress of INP is bigger than KCP, and DEP is the smallest. The yielding stress is increasing with the confining pressure, but maintain a certain value with the increase of cumulative deformation. Analysis of microstructure test showed that the effect of stress paths and damage degree on the microstructure of dredger fill is significant. The soil microstructure is quite different before and after the yield of soil structure.
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