A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental Research and Modelling of Corbel Strengthened by Steel Accessory
Abstract The aim of the research program developed in Lodz is to find some suitable strengthening methods for corbels. Most elements with shear slenderness a c /h c = 0,5 ÷ 0,6 were presented in (Urban and Krawczyk 2017). Some corbels with a c /h c ≈ 0,3 were prepared and the results were partly published in (Urban et al. 2016). The subject of this paper is Corbel C – III strengthened by the steel accessory. The corbel was strengthened while the load was acting. The strain-load curves for the tested corbel and the reference one are presented. Concept of the model is presented with assumptions and equations necessary to calculate load capacity of the corbel. The conclusion of the paper may be two main findings: (1) Significant strengthening for Corbel C – III was observed. The maximum force was 480 kN (there was no failure). For the reference Corbel C – 0 a failure was observed for 189 kN. It means that strengthening ratio was at least 480/189=2,54. (2) The calculations presented below are inspired by kinematic models and show good compatibility with the corbel behavior during the test. The failure force predicted by the model is slightly higher than maximum loading. In order to prove by calculations that rotation is possible according to the assumption, the test results concerning shear-friction between concrete and the corrugated steel plate are needed. Another question is how conservative the equation for shear resistance of anchors group is.
Experimental Research and Modelling of Corbel Strengthened by Steel Accessory
Abstract The aim of the research program developed in Lodz is to find some suitable strengthening methods for corbels. Most elements with shear slenderness a c /h c = 0,5 ÷ 0,6 were presented in (Urban and Krawczyk 2017). Some corbels with a c /h c ≈ 0,3 were prepared and the results were partly published in (Urban et al. 2016). The subject of this paper is Corbel C – III strengthened by the steel accessory. The corbel was strengthened while the load was acting. The strain-load curves for the tested corbel and the reference one are presented. Concept of the model is presented with assumptions and equations necessary to calculate load capacity of the corbel. The conclusion of the paper may be two main findings: (1) Significant strengthening for Corbel C – III was observed. The maximum force was 480 kN (there was no failure). For the reference Corbel C – 0 a failure was observed for 189 kN. It means that strengthening ratio was at least 480/189=2,54. (2) The calculations presented below are inspired by kinematic models and show good compatibility with the corbel behavior during the test. The failure force predicted by the model is slightly higher than maximum loading. In order to prove by calculations that rotation is possible according to the assumption, the test results concerning shear-friction between concrete and the corrugated steel plate are needed. Another question is how conservative the equation for shear resistance of anchors group is.
Experimental Research and Modelling of Corbel Strengthened by Steel Accessory
Krawczyk, Łukasz (author) / Urban, Tadeusz (author)
2017-08-06
8 pages
Article/Chapter (Book)
Electronic Resource
English
Strenthening of Short Reinforcement Concrete Corbel Using Steel Accessory
| Online Contents | 2018
Steel corbel device and construction method for jacking bridge through steel corbel device
| European Patent Office | 2023