Study on the Difference between Multipotiential Surface Model and Duncan-Chang Model Based on the Triaxial Test of Heda Highway Turfy Soil

Abstract

Firstly, this paper determined the experiment parameter of Duncan-Chang model, through Heda highway turfy soil ordinary triaxial test. Then get to the elastics strain relationship of the multipotiential surface model according to the data above. And finally get the applicable category of the two model through the contrast of the relationship of body strain and axial strain and the relationship of partial stress and axial strain.

Physical and Mechanical Properties of Turfy Soils under Confining and Axial Pressure Increases Stress Paths in Jilin Province, Northeast China

“…Turfy soil is a special type of humic acid-rich humus soil [1] that possesses a unique set of soil properties, such as high organic matter, high compressibility, high moisture, high permeability, a high void ratio, and a low degree of decomposition [2] because of the unique external environment. It also possesses the general characteristics of soft soil, such as nonlinearity, expansion, contraction, plasticity, anisotropy, and rheology [3][4][5]. e expansion of large-scale construction projects in these turfy soil distribution areas reflects economic development trend, introducing several geotechnical engineering design concerns [6,7].…”