Abstract
This work has two axes: The first one is theoretical (bibliographic analysis) on the theoretical estimation of the settlement under a Shallow foundation with the contribution of the characteristics of the results of the pressurometric tests and the second numerical axis by the numerical evaluation of the settlement generated by a superficial foundation that always happens by estimating the carrying capacity of these foundations by two methods the first is the classical method and the second the empirical method based on the direct interpretation of the in situ test such as the pressuremeter test by the determination Pressuremeter characteristics (Limit pressure (Pl) and the Pressuremeter module (EM)), our contribution consists in using a calculation code based on the finite element method with the contribution of two laws of elastoplastic behavior namely Mohr-Coulomb and Cam- Clay we use geotechnical survey results project of the railway line project (Tissemesilt-Alger-Bughazoul) in Algeria.
Highlights
The evaluation of settlements under shallow foundations and the estimation of carrying capacity are major and traditional problems in geotechnical medium and long term has become more and more common, the need for reliable methods for the design and calculation of these foundations
Several methods have been developed to estimate the settlement that is directly related by the load capacity which can be evaluated by several methods namely the classical method (c and φ) [1], the methods from the results of the in-situ tests and the numerical methods that the objective of this work are based in general on the finite element method
The main objective of this work is the contribution of the pressuremeter characteristics such as in the numerical estimation of this settlement generated by these superficial foundations with two approaches for a railway station structure foundation
Summary
The evaluation of settlements under shallow foundations and the estimation of carrying capacity are major and traditional problems in geotechnical medium and long term has become more and more common, the need for reliable methods for the design and calculation of these foundations. Several methods have been developed to estimate the settlement that is directly related by the load capacity which can be evaluated by several methods namely the classical method (c and φ) [1], the methods from the results of the in-situ tests (pressuremeter test) and the numerical methods that the objective of this work are based in general on the finite element method. The main objective of this work is the contribution of the pressuremeter characteristics such as (the limit pressure and the pressuremeter module) in the numerical estimation of this settlement generated by these superficial foundations with two approaches for a railway station structure foundation. The pressuremeter module (EM) is a deviatoric module, suitable for calculating the settlement of foundations for which the deviatoric stress field is preponderant, namely the "narrow" foundations, such as the footings of buildings and structures [21] .the settlement formula is given by Equation 1
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