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Unformatted text preview: The University of Iowa Department of Civil & Environmental Engineering Fall Semester, 2002 53:030 Soil Mechanics Lab Experiment No. 10: Consolidation Computations Using a FEM Code A. Objective In this laboratory assignment, a finite element program will be used to compute the two-dimensional pore pressure distribution and the two-dimensional elastic consolidation settlements that occur beneath a foundation loading on a soil. While this problem could be treated approximately using one-dimensional models, the objective of this lab assignment is to briefly demonstrate how these problems can also be solved using computer based methods. (In subsequent courses, especially 53:133, you’ll have the opportunity to learn more about how these computer based methods actually work.) The specific problem to be addressed in this lab is shown in Figure 1 of this handout. For the geometry and loading conditions shown, the program solves for equilibrium of both the soil skeleton (1) and the pore fluid (2): [ (1 ) 1 ] ( ) = dry g (1) ( ) + ( ) = g (2) where: is the velocity of the soil skeleton; is the velocity of the pore fluid; is the soil resistivity tensor (inverse of permeability); discharge velocity vector, dry is the dry density of the soil skeleton; is the density of the pore fluid; is the soil permeability; are the soil effective stresses; is the fluid pressure; and g is the gravity body force per unit mass acting on both the fluid and the solid phases. For simplicity in this problem, we will assume that the soil skeletonfluid and the solid phases....
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This note was uploaded on 11/10/2010 for the course CIVIL 53:30 taught by Professor Swan during the Fall '09 term at University of Iowa.
- Fall '09
- Environmental Engineering