Experimental Study of Novel Demountable Shear Connectors for Steel-concrete Composite Buildings

Authors

  • Krisztián Király
    Affiliation
    Department of Structural Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., Kmf. 85, H-1111 Budapest, Hungary
    bim.GROUP Ltd, Lechner Ödön fasor 10/B 4th floor, H-1095 Budapest, Hungary
  • László Dunai
    Affiliation
    Department of Structural Engineering, Faculty of Civil Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., Kmf. 85, H-1111 Budapest, Hungary
https://doi.org/10.3311/PPci.22732

Abstract

Sustainable composite structures in building construction are assembled using demountable structural elements that can be reused in the circular economy. The current research and development project, in cooperation with Budapest University of Technology and Economics and KÉSZ Group, bim.GROUP Ltd., Hungary, aims to design a novel demountable steel-concrete composite slab and frame system for buildings. The key component of this construction is the demountable shear connector. In the current research, novel bolted shear connectors with embedded bolts and threaded rods are developed and studied that can fit the applied technology of the industrial partner. One of the leading aspects of this connection is the consideration of bolt hole clearance, since it occurs initial slip and stiffness reduction of the composite beam. In the first phase of the research program, demountable and economical structural details were developed, which can reduce the stiffness reduction with the proper resistance and ductility features. To study the behavior of these shear connections, a push-out experimental program was designed and completed in March and April 2023. It is observed that novel shear connectors have a proper behavior with sufficient resistance and ductility, which is applicable according to the Eurocode 4 standard and fits the objectives of the research and development project. In the paper, the developed structural details and the push-out experimental program are presented with general results and statements besides a detailed evaluation of a specified specimen type.

Keywords:

sustainable structure, demountable composite structure, shear connector, push-out test

Citation data from Crossref and Scopus

Published Online

2024-02-21

How to Cite

Király, K., Dunai, L. “Experimental Study of Novel Demountable Shear Connectors for Steel-concrete Composite Buildings”, Periodica Polytechnica Civil Engineering, 68(2), pp. 647–656, 2024. https://doi.org/10.3311/PPci.22732

Issue

Section

Research Article