Evaluation of the influence of shrinkage strain on the fatigue strength of the connection in steel–concrete composite beams

• Autorzy: Furtak, K.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the author's proposal for calculation of shear stresses (disintegrating) induced by concrete shrinkage at the interface of steel and concrete. The proposal also presents expressions to calculate the fatigue strength of a connection in steel–concrete composite girders. The expressions to calculate fatigue strength are based on the results of experiments performed by the author. Based on the results of analyses it can be stated that the load bearing capacity of a connection with flexible shear connectors is strongly affected by a concrete slab adhesion to a steel girder. This effect depends on the stiffness ratio of the girder to concrete deck (coefficient δ), concrete strength and diameter of shear studs d, as well as the value of shrinkage strain of concrete. Fatigue strength of a connection with strip connectors is affected by the geometry of the composite girder and its components, concrete strength and concrete shrinkage strain. At low values of δ, low concrete grades and large diameters of shear connectors or holes, the fatigue strength of the composite connection is likely to be exhausted.

Słowa kluczowe

PL

zmęczenie materiału; kompozyty; naprężenie ścinające; wytrzymałość betonu

EN

fatigue strength; shrinkage strain; composite elements; flexible shear connectors; perfobond connectors

• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2015
• Tom: Vol. 15, no. 3
• Strony: 767--774
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Furtak, K.

• Department of Building Bridges and Tunnels, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland,

Bibliografia

• [1] J.M. Aribert, Etude critique par voie numerique de la methode proposee dans l Eurocode 4 pour le dimen, Conference Report: Composite Construction – Conventional and Innovative, Innsbruck, September, 1997.
• [2] A. Biegus, W. Lorenc, Projektowanie zespolonych konstrukcji stalowo-betonowych według PN-EN 1994,(Design of composite steel–concrete structures according to EN 1994), in: Konstrukcje Zespolone, Uniwersytet Zielonogórski, Zielona Góra, 201427–48.
• [3] A. Biegus, W. Lorenc, Development of shear connections in steel–concrete composite structures, in: Konstrukcje Zespolone, Uniwersytet Zielonogórski, Zielona Góra, 2014127–136.
• [4] E. Cosenza, S. Mazzolani, Simplified methods to evaluate defections in composite steel–concrete beams with spatial shear connections, in: Proceedings of the 4th ASCCS International Conference on Steel–Concrete Composite Structures, Kosice, June, 1994.
• [5] A. Ďuricová, M. Rovňák, L. Nad, Comparison of shear connection by means of shear studs, perfo-bond and comb-shaped strips, in: l0th International Scientific Conference ‘‘Communications on the edge of the Millenniums’’, Žilina, September, 1998.
• [6] PN-EN 1994-1-1:2008: Design of Composite Steel and Concrete Structures – Part 1-1: General Rules and Rules for Buildings.
• [7] PN-EN1994-2:2010: Eurocode 4 – Design of Composite Steel and concrete Structures – Part 2: General Rules and Rules for Bridges.
• [8] K. Furtak, Mosty zespolone, PWN, Warszawa-Kraków, 1999.
• [9] K. Furtak, Wpływ skurczu betonu i obciążeń zmiennych na nośność zespolenia w elementach typu stal – beton, Inżynieria i Budownictwo 1–2 (2009) 21–23.
• [10] J. Łącki, Nośność zespolenia żelbetowej płyty z dźwigarem stalowym, Kraków, (Praca doktorska), 2004.
• [11] M. Kuczma, B. Kuczma, Steel–concrete composite beams with elasto-plastic connection, in: Mathematical Methods in Continuum Mechanics, Technical University of Lodz Press, Lodz, 2011.
• [12] A. Nakajima, H. Abe, Experimental study on behaviour of horizontalo shear of composite girder, in: Proceedings of the 4th ASCCS International Conference on Steel–Concrete Composite Structures, Košice, June, 1994.

Identyfikatory

DOI

10.1016/j.acme.2014.12.011