Tested and modeled shear stress-displacement behavior of soil-structure interface
Abstract：In order to properly understand mechanical behavior of soil-structure interface,laboratory tests on the interface were carried out by using improved direct shear apparatus in consideration four water contents,and analysis on its stress-displacement model was conducted based on mathematical property points.Investigated test data show that：① shear strength of soil-rock interface and soil itself decreases with higher water content,but that of soil-brick interface increases first and then decreases after reaching one peak value;② shear strength of soil-rock interface is completely smaller than that of soil itself;③ magnitude relationship of shear strength between soil-brick interface and soil itself is uncertain,and it varies with increasing soil water content.On the other hand,a new composite-exponent model to describe interface stress-displacement curve was established,which overcame the weakness of conventional model and was available for both hardening and softening type of stress-displacement curves.Finally,comparison between tests data and new model simulations is performed,and good agreements are found.
Keywords：soil-structure interfaceshear experimentstress-displacement modelshear strength
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)