Multiaxial-coupled analysis of RC cross-sections subjected to combined forces

In this paper a nonlinear sectional formulation to account for full 3D stress–strain states on frame elements is presented, by means of a special cross-section model which allows for warping and section’s shape distortion. This formulation allows using a 3D constitutive model for concrete. Subsequen...

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Veröffentlicht in:Engineering structures 2007-08, Vol.29 (8), p.1722-1738
Hauptverfasser: Bairan, J.M., Mari, A.R.
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description In this paper a nonlinear sectional formulation to account for full 3D stress–strain states on frame elements is presented, by means of a special cross-section model which allows for warping and section’s shape distortion. This formulation allows using a 3D constitutive model for concrete. Subsequently, the approach is applied it to the nonlinear coupled behaviour of RC sections under multiaxial internal forces considering inclined cracking pattern and failure stages. The applicability of the model to RC sections is validated by means of combined tangential-normal loading case studies. The presented formulation uses the traditional six generalized strains 3D sectional analysis; therefore it can be implemented on any 3D frame element without introducing additional degrees of freedom on the frame element.
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subjects 3D Coupled loading
Applied sciences
Building structure
Buildings. Public works
Computation methods. Tables. Charts
Construction (buildings and works)
Exact sciences and technology
Internal forces interaction
Nonlinear analysis
Reinforced concrete
Reinforced concrete structure
Sectional analysis
Shear
Structural analysis. Stresses
Torsion
title Multiaxial-coupled analysis of RC cross-sections subjected to combined forces
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