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Rots, J.G. (author), Frissen, C.M. (author), Feenstra, P.H. (author), TNO Bouw (author)
The relevance of computatiOnal fracture mechanics rationalizing design rules for stacked concrete/masonry structures is demonstrated. Interface softening roodels for tension and shear are used to simulate the initiation, propagation and snap-through of cracks and slip planes in these unreinforced structures. Two examples are included, for the...
conference paper 1999
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Lourenço, P.B. (author), Rots, J.G. (author), van der Pluijm, R. (author), TNO Bouw (author)
The lack of experimental data for the complete characterisation of the inelastic behaviour of masonry is a key issue in numerical modelling of masonry structures. A solution to obtain the material properties of masonry at the macro-level is to derive them on the basis of the geometrical and material properties of the underlying constituents,...
conference paper 1999
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van Zijl, G.P.A.G. (author), Rots, J.G. (author), TNO Bouw (author)
conference paper 1998
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van Zijl, G.P.A.G. (author), de Borst, R. (author), Rots, J.G. (author), TNO Bouw (author)
In this paper a finite element formulation for the analysis of mois-ture migration, creep, shrinkage and cracking in cementitious materi-als, such as masonry, is presented. A decoupled approach is followed, where the pore humidity, the driving force for shrinkage, is solved for from a diffusion equation. The evolution of the shrinkage strain...
conference paper 1998
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van Zijl, G.P.A.G. (author), Rots, J.G. (author), TNO Bouw (author)
State of the art computational rnechanics, in combination with experimental programmes have a lot to offer in providing insight, characterization of total behaviour and predictive ability of structural masonry. Here numerical research towards rationalizing masonry wall movement joint positioning and spacing is reported. Despite restrained...
conference paper 1998
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Feenstra, P.H. (author), Rots, J.G. (author), Arnesen, A. (author), Teigen, J.G. (author), Hoiseth, K.V. (author), TNO Bouw (author)
This paper discusses the concept of the co-rotational elasticity-based crack model and the assumptions made on the behavior of concrete, in specific on the lateral stress effects. The formulation of the constitutive model is given, including the consistent formulation of the tangent stiffness matrix. The model is applied to a plain concrete...
conference paper 1998
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Lourenço, P.B. (author), Rots, J.G. (author), TNO Bouw (author)
Results of using recently developed material models for the analysis of masonry structures are shown. Both interface modeling, in which masonry components (units and joints) are represented, as continuum modeling, in which masonry is represented as a homogeneous continuum, are addressed. It is shown that the power of the models have reached...
conference paper 1998
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van Zijl, G.P.A.G. (author), de Borst, R. (author), Rots, J.G. (author), TNO Bouw (author)
The interaction between moisture migration, creep, shrinkage and cracking in ce-mentitious ntaterials, snelt as masonry, is studied in this paper. A decoupled approach is followed. As driving force for shrinkage, the pore Immidity is solved for from a diffusion equation. Subsequently, the evolution of the shrinkage strain field is derived and...
conference paper 1998
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Hasegawa, T. (author), Kumagai, H. (author), Irino, K. (author), Rots, J.G. (author), Feenstra, P.H. (author)
The paper discusses the finite element simulation with the finite element system DIANA of a large-scale experiment on a reinforced concrete shear wall. The simulation shows that useful information on the failure mode can be obtained from the nonlinear static, and nonlinear transient dynamic analysis
conference paper 1997
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Lourenco, P.B. (author), Rots, J.G. (author), Blaauwendraad, J. (author)
This article presents possible applications of computational modelling of masonry structures. The examples address the problems of design rules and their relation with numerical models, the anal-ysis of existing (complex) structures subjected to new (complex) loading conditions and the safe-ty of existing old structures. The numerical models...
conference paper 1997
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Zijl, G.P.A.G. (author), Rots, J.G. (author)
As part of the Dutch research programme Structural Masonry a ra-tional brick-joint model was developed, describing fracture, shear-slipping and crushing of masonry numerically. In this paper validation of the model by numer-ical simulation of micro-experiments is reported. The model was enhanced with a dilatancy formulation accurately capturing...
conference paper 1997
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Hoiseth, K.V. (author), Kaptijn, N. (author), de Boer, A. (author), Rots, J.G. (author)
In connection with renovation of a skew plate fly-over in concrete, nonlinear analyses have been performed, to assess the load carrying capacity before and after strengthening. The FEM-model was justified by linear analyses, where the influence of spatial resolution, shear and longitudinal curvature was studied. The tensile properties of...
conference paper 1996
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