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Foundation analysis and design

01 Jan 1968-
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Abstract: Keywords: Fondation ; Mur de soutenement ; Pieux ; Capacite portante ; Ancrage ; Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08
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Journal ArticleDOI
TL;DR: In this article, it is shown that dividing the vertical soil shear tractions and the corresponding settlements along the pile generates depth-dependent Winkler springs that accurately describe the pile-soil interaction, contrary to the widespread belief that the Winkler representation is always approximate.
Abstract: The problem of elastic soil–pile interaction and its modelling using the concept of a Winkler support are revisited. It is shown that dividing the vertical soil shear tractions and the corresponding settlements along the pile generates depth-dependent Winkler springs that accurately describe the pile–soil interaction, contrary to the widespread belief that the Winkler representation is always approximate. A simplified theoretical model is then derived for analysing the response of an end-bearing cylindrical pile in a homogeneous soil stratum. Explicit solutions are obtained for: (a) pile settlement; (b) depth-dependent Winkler modulus; (c) average (depth-independent) Winkler modulus to match pile head settlement. Both infinitely long piles and piles of finite length are examined. The approximate analytical solution compares favourably with finite-element and boundary-element solutions. A simple regression formula for the average Winkler modulus is developed.

88 citations

Journal ArticleDOI
TL;DR: In this paper, analytical solutions have been developed for obtaining the ultimate bearing capacity of footings adjacent to slopes using limit equilibrium and limit analysis approaches, and one-sided ruptur...
Abstract: In this paper, analytical solutions have been developed for obtaining ultimate bearing capacity of footings adjacent to slopes using limit equilibrium and limit analysis approaches. Onesided ruptur...

87 citations

Journal ArticleDOI
TL;DR: In this article, the authors extend the interaction factor concept from the framework of conventional pile groups to that of energy pile groups, and present charts for the analysis of the displacement interaction between two identical energy piles over a broad range of design conditions.

87 citations

Journal ArticleDOI
TL;DR: The proposed approach consists of deriving maximum settlement directions of the investigated buildings from displacement data revealed by radar measurements and then in the cross-comparison of these values with background geological data, constructive features and on-field evidence to better understanding whether or not the detected movements correspond to visible and effective damages to buildings.
Abstract: In recent years, space-borne InSAR (interferometric synthetic aperture radar) techniques have shown their capabilities to provide precise measurements of Earth surface displacements for monitoring natural processes. Landslides threaten human lives and structures, especially in urbanized areas, where the density of elements at risk sensitive to ground movements is high. The methodology described in this paper aims at detecting terrain motions and building deformations at the local scale, by means of satellite radar data combined with in situ validation campaigns. The proposed approach consists of deriving maximum settlement directions of the investigated buildings from displacement data revealed by radar measurements and then in the cross-comparison of these values with background geological data, constructive features and on-field evidence. This validation permits better understanding whether or not the detected movements correspond to visible and effective damages to buildings. The method has been applied to the southwestern sector of Volterra (Tuscany region, Italy), which is a landslide-affected and partially urbanized area, through the use of COSMO-SkyMed satellite images as input data. Moreover, we discuss issues and possible misinterpretations when dealing with PSI (Persistent Scatterer Interferometry) data referring to single manufactures and the consequent difficulty of attributing the motion rate to ground displacements, rather than to structural failures.

86 citations

Journal ArticleDOI
TL;DR: In this article, the concept of response surface method (RSM) is used to generate approximate polynomial functions for ultimate bearing capacity and settlement of a shallow foundation resting on a cohesive frictional soil for a range of expected variation of input soil parameters.

85 citations