RESEARCH PROGRESS ON THE APPLICATION OF CAVITY EXPANSION THEORY IN IN-SITU TESTING
The cavity expansion theory has obvious applicability and importance in the theoretical analysis of in-situ testing.This paper mainly summarizes and expounds the relevant research results of the cavity expansion theory in the field of in-situ testing e.g.cone penetration test(CPT),piezocone penetration test(CPTU),pressuremeter test(PMT)in recent years,including the prediction of the cone penetration resistance,pore water pressure and bearing capacity of pile foundation based on CPT/PMT method,and the interpretation of relevant soil parameters(strength parameters such as undrained shear strength,internal friction angle,and state parameters such as over-consolidation ratio and relative density).Finally,combined with the application case analysis of indoor and field tests,the limitations and shortcomings of the cavity expansion theory in in-situ testing are summarized,and it points out that the theory needs to be further improved in the future.
cavity expansion theorycone penetration testpiezocone penetration testpressuremeter testpile foundation
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