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Vertical stability of anchored concrete soldier-pile walls in clay

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Resumo:The problem of vertical stability in flexible anchored retaining walls is analyzed and the pattern of the behavior under conditions of poor vertical support is described, 011 the basis of results from case histories, small-scale tests, and numerical modelling. The possibility of shear stress mobilization in the soil-to-wall interface of anchored concrete soldier—pile retaining walls is discussed. A finite element procedure to model excavations supported by soldier—pile retaining walls is described and applied to a numerical case study. Finite element analyses are performed, emphasizing the consequences of vertical instability due to buckling of the soldier piles and the role of interface resistance in vertical equilibrium. The understanding of some results of the numerical analyses, which are highly influenced by the complexity of the interaction between the different parts of the structure, is obtained by reassessing the vertical equilibrium issue in the light of limit analysis. This approach makes it possible to estimate the pile resistance corresponding to the limit situation of excavation collapse. The finite element model is used to confirm this resistance. Some conclusions are drawn.
Autores principais:Guerra, Nuno M. da Costa
Outros Autores:Cardoso, António Silva; Fernandes, Manuel Matos; Correia, A. Gomes
Assunto:Retaining walls Finite elements Limit analysis Shear forces Stability Vertical loads
Ano:2004
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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