Effect of Soil Consolidation on Space Frame-Raft-Soil Interaction
Publication: Journal of Structural Engineering
Volume 123, Issue 11
Abstract
Nonlinear consolidation analysis using a finite-element (FE) formulation based on Biot's consolidation theory has been used to study the time-dependent behavior of three-dimensional (3D) frame structures resting on an elastic or elastic perfectly plastic soil satisfying the Drucker-Prager yield criterion. The effect of soil consolidation on the behavior of a 3D frame-raft-soil mass system is considered. The initial stress method with a modified Newton-Raphson iterative scheme has been used for this study. A coupled finite-infinite element modelization is used for the physical representation of the system. Time history of axial forces and bending moments of the mat foundation and the structural elements (beams and columns) are compared with those of time-independent analysis. The results show that the consolidation of soil increases the internal forces in some elements, so that checking the final forces in the frame by time-independent conventional frame analysis may not be sufficient.
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Published In
Journal of Structural Engineering
Volume 123 • Issue 11 • November 1997
Pages: 1528 - 1534
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Nov 1, 1997
Published in print: Nov 1997
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