01365683

Component

Many culvert problems require a 3-dimensional analysis of the culvert and the surrounding soil. A simple material model that is available in several 3-dimensional finite element programs is the Mohr-Coulomb model. CANDE is a 2-dimensional finite element program that can utilize a Duncan/Selig hyperbolic soil material model. The Duncan/Selig model is often a preferred choice for simulating soil/structure interaction. Unfortunately, the Duncan/Selig model is not generally available in commercial 3-dimensional finite element programs. This paper looks at a modeling a 2-dimensional culvert problem in both CANDE (with a Duncan/Selig material model) and with the ADINA software program using a Mohr-Coulomb material model. By comparing results, appropriate values for Young’s modulus and Poisson’s ratio are selected for the Mohr-Coulomb model that approximates the results from CANDE. This process may be used to obtain approximate Mohr-Coulomb property values for 3-dimensional problems.

This paper was sponsored by TRB committee AFF70 Culverts and Hydraulic Structures

01362476

12-1210

English

13p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Culverts; Finite element method; Hyperbolic functions; Mathematical models; Software; Soil structure interaction

Bridges and other structures; Geotechnology; Highways; Planning and Forecasting; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics

Transportation Research Board Annual Meeting 2012 Paper #12-1210

TRIS, TRB

Feb 8 2012 5:00PM