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The Simulation of Soil-Concrete Interfaces with a Non-local Constitutive Model

by Z. Chen, Univ of New Mexico, Albuquerque, NM, USA,
H. L. Schreyer, Univ of New Mexico, Albuquerque, NM, USA,



Document Type: Proceeding Paper

Part of: Dynamic Response of Structures

Abstract:

This investigation explores a method for predicting deformation in the vicinity of interfaces of dissimilar materials such as concrete and soil. Based upon the basic features of the deformation field, a new nonlocal approach for simulating soil-concrete interfaces is proposed. It is assumed that the stress field is a function of both strain and strain gradients, and that no relative slip occurs at the contact surface between soil and concrete. Typical response features for the region adjacent to the interface can be obtained by adjusting material parameters. Numerical results for static and dynamic cases show that softening and localization are handled in a stable manner independent of mesh size.

Subject Headings: Soil deformation | Stress strain relations | Strain | Soil stress | Concrete | Constitutive relations | Strain hardening and softening

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