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Calibri 83ffff̙̙3f3fff3f3f33333f33333.n-TU Delft Repositoryg `+uuidrepository linktitleauthorcontributorpublication yearabstract
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departmentresearch group programmeprojectcoordinates)uuid:ec81d75f-9835-481b-9e48-cbbf81fad44aDhttp://resolver.tudelft.nl/uuid:ec81d75f-9835-481b-9e48-cbbf81fad44aUBending-shear interaction of steel I-shaped cross-sections. Statistical investigation+Dekker, R.W.A.; Snijder, H.H.; Maljaars, J. Clause 6.2 of EN 1993-1-1 covers the cross-sectional resistance of steel sections. The bending-shear interaction design rules for I-shaped cross-sections make use of a reduced yield stress for the web area. On this basis, a reduced design plastic resistance moment allowing for the shear force is presented. The effect of shear on the bending resistance may be neglected if the shear force is less than half of the plastic shear resistance of the cross-section. Plasticity in the Eurocode is described by the well-known Von-Mises yield criterion, however, the formula used for the reduced yield stress deviates from this criterion, resulting in sometimes greater and sometimes smaller values. The background of the Eurocode formula for reduced yield stress can be found in a publication by Drucker. The purpose of the present research is to investigate the influence of shear on the bending resistance of I-shaped steel cross-sections with as result a possible reconsideration of the Eurocode design rules. At Eindhoven University of Technology an experimental investigation on bending-shear interaction in rolled steel I-shaped sections was performed. A numerical model was developed in Abaqus Finite Element software to simulate the experiments. With the validated numerical model a larger database of numerical test results was generated, which was subsequently used in a statistical analysis following Annex D of EN 1990 as further developed in the RFCS project Safebrictile. The statistical distributions of the steel properties recommended by Safebrictile were adopted. This paper presents the results of the statistical analysis and safety assessment of the strong axis bending-shear interaction design rule currently present in Eurocode 3. The parametric test group consists of HEA, HEM and IPE sections in the steel grades S235, S355 and S460: in total 180 numerical simulations with increasing amount of shear. A stress-strain model including strain hardening was used in the numerical simulations, since the influence of strain hardening is also largely present in the experimental test program. Based on strain hardening material behavior it is show in this paper that the current partial factor is un-conservative for shear dominated beams and should be increased. Alternatively, the design rule should be modified.2015 Fluid & Solid Mechanics; SR - Structural Reliability; TS - Technical Sciences; Buildings and Infrastructures; Architecture and Building; 2015 Urbanisation; Statistical evaluation; Cross-sectional resistance; Bending-shear interaction; I-sectionenconference paper)uuid:56e5006d-e31f-48b4-87dd-7a1c80d07f64Dhttp://resolver.tudelft.nl/uuid:56e5006d-e31f-48b4-87dd-7a1c80d07f64dNumerical investigation into strong axis bending shear interaction in rolled I-shaped steel sections+Dekker, R.W.A.; Snijder, B.H.; Maljaars, J.Clause 6.2.8 of EN 1993-1-1 covers the design rules on bending-shear resistance, taking presence of shear into account by a reduced yield stress for the shear area. Numerical research on bending-shear interaction by means of the Abaqus Finite Element modelling soft-ware is presented. The numerical model is validated against the experimental results. A material model based on various tensile test coupons was used incorporating the actual material proper-ties within the tested cross-section. Strong axis three-point bending tests were simulated by means of continuum solid elements. Good agreement was achieved between numerical and experimental result, both are compared with the EN 1993-1-1 design rule.2015 Fluid & <v Solid Mechanics; SR - Structural Reliability; TS - Technical Sciences; Buildings and Infrastructures; Architecture and Building; 2015 Urbanisation)uuid:6ac8a0df-7d24-40e8-a31d-29e774cf9684Dhttp://resolver.tudelft.nl/uuid:6ac8a0df-7d24-40e8-a31d-29e774cf9684MExperimental study into bending shear interaction of rolled I-shaped sectionsThe bending-shear resistance of steel cross-sections is covered in EN 1993-1-1 [1], taking presence of shear into account by a reduced yield stress for the shear area. An experimental investigation on bending-shear interaction of rolled HE280A beams in S235 and S355 was performed by means of 3-point bending tests. Two criteria were considered for the evaluation of the experimental results, being the load at which complete yielding of the cross-section occurred and the ultimate resistance, i.e. the top of the load-displacement curve. Experimental results complied with the design rule when the criterion of the ultimate resistance was chosen. Yielding as failure criterion generated unconservative results for shorter beams2015 Fluid & Solid Mechanics; SR - Structural Reliability; TS - Technical Sciences; Buildings and Infrastructures; Materials; 2015 Urbanisation
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