Foundation slabs bending model with variable stiffness ratio rested on elastic foundation

Author:

Nekrasova Nataliya N.1ORCID,Akchurina Lyudmila V.2ORCID

Affiliation:

1. Candidate of Technical Sciences, Associate Professor, Department of Applied Mathematics and Mechanics, Voronezh State Technical University, Voronezh, Russia (corresponding author: )

2. Candidate of Technical Sciences, Associate Professor, Department of Applied Mathematics and Mechanics, Voronezh State Technical University, Voronezh, Russia

Abstract

The study addresses the problem of designing slabs with variable stiffness to meet such requirements as reducing material consumption, ensuring reliability, durability and cost-effectiveness. The paper offers a solution of the spatial task of contact interaction of orthotropic slabs with elastic foundations. The system of integral−differential equations, which the task is reduced to, is solved numerically by a combination of the finite-difference method and the boundary elements method. The finite-differential scheme is considered to be a shock-capturing type, characterised by the fact that the boundaries of the areas with different mechanical properties are not explicitly highlighted, and in grid nodes the smoothing principle was applied. As the soil foundation models, the elastic linear-strain space and elastically compressional wedge were used. The contact pressure distributions, bending moments and deflections of rectangular slabs of variable stiffness fully adjacent to the base were found. The impact on slabs’ stress−strain behaviour, the degree of soil thickness uneven compressibility and its material orthotropic properties change were analysed. The developed method effectively simulates behaviour of slab-based foundation structures in complex geological conditions where it is necessary to take into account the heterogeneity of soil thickness compressed by a building or a facility.

Publisher

Thomas Telford Ltd.

Subject

Mechanics of Materials,Civil and Structural Engineering

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Vibration analysis of buried pipelines and piles using differential transformation method;Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics;2022-06

2. Editorial;Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics;2019-06

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