A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete cracking in composite bridges: tests, models and design proposals
Concrete cracking affects the durability and the mechanical behaviour of steel-concrete composite bridges. The main results of an experimental and theoretical study that focused on the mechanical behaviour of steel-concrete composite bridges under non-monotonic service loading are presented. Three 7.2 m long cracked composite beams were tested and a numerical model was developed (the Non-Linear Model). This model is used to evaluate the differences between the real behaviour of continuous composite bridges and the behaviour determined with a simple model that does not consider the influence of the cracked concrete. The tests and the Non-Linear Model demonstrate that tension stiffening of cracked concrete is counteracted, under non-monotonic service loading, by the plastic behaviour of the concrete-reinforcement bond. In addition, the coincidence of transverse reinforcement with the location of cracks as seen in tests means that the influence of the concrete between cracks on the crack widths is less than 10%. Finally, the design proposals based on this analysis that have been developed in order to be used by practising engineers are summarised. (VDEh)
Concrete cracking in composite bridges: tests, models and design proposals
Concrete cracking affects the durability and the mechanical behaviour of steel-concrete composite bridges. The main results of an experimental and theoretical study that focused on the mechanical behaviour of steel-concrete composite bridges under non-monotonic service loading are presented. Three 7.2 m long cracked composite beams were tested and a numerical model was developed (the Non-Linear Model). This model is used to evaluate the differences between the real behaviour of continuous composite bridges and the behaviour determined with a simple model that does not consider the influence of the cracked concrete. The tests and the Non-Linear Model demonstrate that tension stiffening of cracked concrete is counteracted, under non-monotonic service loading, by the plastic behaviour of the concrete-reinforcement bond. In addition, the coincidence of transverse reinforcement with the location of cracks as seen in tests means that the influence of the concrete between cracks on the crack widths is less than 10%. Finally, the design proposals based on this analysis that have been developed in order to be used by practising engineers are summarised. (VDEh)
Concrete cracking in composite bridges: tests, models and design proposals
Rißbildung von Beton in Verbundbrücken: Vorschläge für Prüfverfahren, Modelle und Konstruktion
Navarro, M.G. (author) / Lebet, J.P. (author)
Structural Engineering International ; 11 ; 184-190
2001
7 Seiten, 10 Bilder, 1 Tabelle, 9 Quellen
Article (Journal)
English
Stahlbeton , Verbundbauteil , Beton , Rissbildung , Tragfähigkeit , Steifigkeit , Verformung , Ermüdung , Modellierung
Concrete Cracking in Composite Bridges: Tests, Models and Design Proposals
| British Library Online Contents | 2001
Science and Technology - Concrete Cracking in Composite Bridges: Tests, Models and Design Proposals
| Online Contents | 2001
| British Library Conference Proceedings | 2002
Early Concrete Cracking of Composite Bridges During Construction
| British Library Conference Proceedings | 2002
Early Concrete Cracking of Composite Bridges During Construction
| British Library Conference Proceedings | 2002