원위치 관입시험을 이용한 비배수 점토의 유효응력 산정

Estimation of Effective Stress for Undrained Clays using In-situ Penetration test

In this study, a method for estimating the effective stress of clays using in-situ penetration test(PCPT) result is proposed. The proposed method is based on a correlation between the PCPT results and strength increment ratio. According to proposed method, no additional testing procedure for collecting undisturbed soil sample is required, which can reduce overall testing cost. To verify this method, for analysis, various analytical solutions were adopted and used. Measured and predicted effective stress are compared on the test results. The verification sites consist of a variety of soil condition. From comparison, it is seen that predicted value of effective stress using the propose method match well those from measured results.