Stress‐History‐Based Model for Ge of Cohesionless soils

摘要: An empirical, stress‐history‐based model for the small strain (or elastic) shear modulus Ge of cohesionless soils has been developed. Various sands were tested in an 18 cm diameter oedometer equipped with lateral‐stress measuring capabilities and bender elements propagating recording elastic waves through specimens. While previous efforts have found scaling approximately 1/2 power confining stress (n=0.5), present work shows n on virgin loading n1 ranging from 0.39 to 0.72. Furthermore, was shown be related maximum dimensionless stiffness coefficient 1‐D (S1Dmax). The values unloading reloading nu displayed a much narrower range than nl. average value 0.38, closer theoretical n=1/3 perfect spheres. This is attributed smaller changes number quality intergranular contacts during compression. developed includes overconsolidation ...