A constitutive model for unsaturated soil-structure interfaces

作者：Lashkari Ali^*; Kadivar Mehdi

来源：International Journal for Numerical and Analytical Methods in Geomechanics, 2016, 40(2): 207-234.

DOI：10.1002/nag.2392

• interface
• constitutive model
• unsaturated soil
• skeleton stress
• dilation

A constitutive model for simulation of the behavior of unsaturated interfaces is presented here. The model is an extension of an existing critical state compatible interface model for dry and saturated interfaces that was already proposed by one of the authors [Lashkari, A. 2013. Int. J. Numer. Anal. Meth. Geomech. 37(8): 904-931]. For a proper simulation of the behavior of partially saturated interfaces, the extended model is formulated in terms of two pairs of work conjugate stress-strain-like variables. The modified model simulations are compared with the existing data of dry, unsaturated, and saturated interfaces. For each interface type, it is shown that the proposed model can capture the essential elements of the behavior using a unique set of parameters.

• 出版日期2016-2-10