Application of the Diflupress L.D. Field Test to Settlement Calculation

by C. Leidwanger, Soils, Solids, Structures Lab, Grenoble, France,
E. Flavigny, Soils, Solids, Structures Lab, Grenoble, France,
R. Chambon, Soils, Solids, Structures Lab, Grenoble, France,
J. L. Giafferi, Soils, Solids, Structures Lab, Grenoble, France,
P. Catel, Soils, Solids, Structures Lab, Grenoble, France,
G. Bufi, Soils, Solids, Structures Lab, Grenoble, France,



Document Type: Proceeding Paper

Part of: Vertical and Horizontal Deformations of Foundations and Embankments

Abstract:

Electricite de France developed a new in situ measurement apparatus (Diflupress L.D.) in order to predict the delayed settlements that can appear under heavy constructions. From the experimental curves we can obtain a characteristic of the test which embodies the viscous behavior of soil. We use this characteristic to calculate the delayed settlements using an adaptation of a classical settlement calculation. This involves simplifications but gives a good approach of delayed settlement. We also perform a complete calculation with an elasto-viscoplastic model implemented in a finite element code. The results are interesting too. It appears that the results of the test with the Diflupress L.D. allow rather good predictions of the delayed settlements.

Subject Headings: Soil settlement | Field tests | Structural settlement | Finite element method | Soil tests | Mathematical models | Soil properties | France | Europe

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