コーン貫入試験と室内せん断試験の信頼度分析と盛土設計の最適化(<小特集テーマ>地盤調査・試験法の小型・高精度化と設計への適用)

概要

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The reliability of the cone penetration and the undrained shear strength tests are examined from in-situ investigation and labolatory tests for a reliability based design of embankments. In this paper, the in-situ undrained shear strength (q_<u(I)>) was estimated from Shogaki's method. The cone index (N_<kt>) was related to the unconfined compressive strength (q_u) and varied in the range of 7 to 13 on average. The measured q_u/2 values were 62% of q_<u(I)>. An optimum embankment design method was proposed and the q_u, q_<u(I)> and undrained shear strength obtained from N_<kt> concerning the total cost and probability of failure were examined. And it was determined that the q_<u(I)> values have an advantage over other values.
社団法人地盤工学会の論文
2006-08-01