Effective stress analysis of soil-structure systems in practice through strain space multiple mechanism model: validation through 15 case histories

Abstract

Effective stress analyses of various soil-structure systems are performed, including six case histories of river dykes with induced settlements ranging from 2.7m to none (no damage), three case histories of caisson quay walls with induced lateral displacement of 3.7m to none (no damage), four sheet pile quay walls with induced lateral displacement of 1.8m to none (no damage), one breakwater with induced settlement of 2.0m and one pile-supported pier with induced lateral displacement of 1.5m. The analyses are performed with a SPT N-value based parameter calibration procedure of strain space multiple mechanism model of cocktail glass model type (Iai et al, 2011) allowing generation and dissipation of excess pore water pressure. The results of analyses are generally consistent with those of case histories with and without damage. Introduction of Sus (steady state strength) in the analysis shows better representation of degree of damage for river dykes, caisson walls, breakwaters, and pile-supported piers.