1. An analytical model of soil–structure interaction with swelling soils during droughts
- Author
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Olivier Deck, Emad Jahangir, Farimah Masrouri, Laboratoire Environnement Géomécanique et Ouvrages (LAEGO), Institut National Polytechnique de Lorraine (INPL), GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA ), and Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Timoshenko beam theory ,021110 strategic, defence & security studies ,Expansive clay ,0211 other engineering and technologies ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,02 engineering and technology ,Geotechnical Engineering and Engineering Geology ,Finite element method ,Computer Science Applications ,Deflection (engineering) ,Soil structure interaction ,medicine ,Environmental science ,Geotechnical engineering ,Swelling ,medicine.symptom ,Water content ,021101 geological & geomatics engineering ,Shrinkage - Abstract
International audience; Lightly loaded structures constructed on expansive soils may develop structural damage as a result of changes in the soil’s moisture content. This study investigated an analytical model of soil–structure interaction to assess the settlement of dwellings built on swelling soils when droughts occur. The building behavior was investigated with the Euler–Bernoulli beam theory, and the ground behavior was investigated with a Winkler-derived model based on the state surface approach. The analytical model results were compared to those of a finite element analysis using the Barcelona Expansive Model (BExM) performed with Code_Bright. The analytical model was then used to assess the settlement transmission ratio for a typology of clayey soils and different parameters of building. The results indicated that the final deflection of the building increased with the building length and soil suction. The building deflection due to the suction variations was inversely proportional to the load, the rigidity of the building and the embedding depth of the foundation. Increasing these parameters made the building less vulnerable to shrinkage and swelling action.
- Published
- 2013
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