Enrique Justo, Isabel González-de-León, Manuel Vázquez-Boza
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引用次数: 0
Abstract
This paper presents a numerical model for calculating settlements and contact stresses of a circular plate resting on an elastic subgrade. The method is an extension of the elastic continuum method developed by Poulos and Davis for piles. Soil settlements are calculated with Mindlin’s equations. Plate settlements are calculated through a finite difference approximation of Kirchhoff’s equations for thin plate bending. The method, originally devised for homogenous soils, has been extended for multilayered soils using the Steinbrenner approximation. Model validation was performed by comparing results with a finite element solution and with previously published methods. The results prove that the method provides a very good approximation for homogenous soils and also for multilayered soils in which soil stiffness increases with depth, while for layered soils with stiffness decreasing with depth the Steinbrenner approximation was found not to be sufficiently accurate. Compared to alternative numerical methods, such as those using variational calculus, the proposed method has the advantage of its greater simplicity.
期刊介绍:
Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed.
The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering.
Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels.
Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.