Reliability Analysis of Shear Strength Index Correlation and Bearing Capacity of Cohesive Soil in a Coastal Site in Guinea

Le résumé fourni par la source

As an important coastal country in West Africa, the cohesive soil in Guinea’s coastal area has unique physical and mechanical properties. The clay of a coastal site in Guinea is mainly within 25m, and the physical and mechanical properties vary greatly. Through the correlation and regression analysis of the shear strength indexes obtained by different test methods in the triaxial compression test of cohesive soil in this site, the reliability index of the bearing capacity of cohesive soil foundation in this site is analyzed. The results show that the absolute values of the correlation coefficients between the shear strength index and water content, density, void ratio, liquid limit, plasticity index and liquid index are between 0.005 and 0.610, the maximum correlation coefficient between Cuu and φuu is 0.592, the second correlation coefficient between C′ and φ′ is 0.223, and the minimum correlation coefficient between Ccd and φcd is 0.083; In the consolidated undrained test, the correlation coefficient between Ccu and C′, φcu and φ′ is higher than 0.96; The reliability of bearing capacity of cohesive soil foundation determined by UU strength index (Cuu and φuu) is the lowest, and the reliability index of CD test strength index C′ and φ′ is 2.88. The results can provide reference for the design of foundation engineering in this area.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.