A novel one-sided push-out test for shear connectors-ASCCS2018.pdf (1.35 MB)
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A novel one-sided push-out test for shear connectors in composite beams

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conference contribution
posted on 16.07.2018, 13:13 by Mohammed A. Al-Shuwaili, Alessandro PalmeriAlessandro Palmeri, Mariateresa LombardoMariateresa Lombardo
Push-out tests (POTs) have been widely exploited as an alternative to the more expensive full-scale bending tests to characterize the behaviour of shear connections in steel-concrete composite beams. In these tests, two concrete slabs are typically attached to a steel section with the connectors under investigation, which are then subjected to direct shear. The results allow quantifying the relationship between applied load and displacements at the steel-concrete interface. Since this relationship is highly influenced by the boundary conditions of POT samples, different experimental setups have been used, where the slabs are either restricted or free to slide horizontally, as researchers have tried to reduce any discrepancy between POT and full-scale composite beam testing. Based on a critical review of various POT configurations presented in the dedicated literature, this paper presents an efficient one-sided POT (OSPOT) method. While OSPOT and POT specimens are similar, in the proposed OPSPOT setup only one of the two slabs is directly loaded in each test, and the slab is free to move vertically. Thus, two results can be obtained from one specimen, i.e. one from each slab. A series of POTs and OSPOTs have been conducted to investigate the behaviour and the shear resistance of headed stud connectors through the two methods of testing. The results of this study than were compared with those of different POTs setups conducted by other researchers. The new OSPOT results show in general an excellent agreement with the analytical predictions offered by both British and European standards, as well as the estimated shear resistance proposed other researchers in the literature. These findings suggest that the proposed one-sided setup could be used as an efficient and economical option for conducting the POT, as it has the potential not only to double the number of results, but also to simplify the fabrication of the samples, which is important in any large experimental campaign, and to allow testing with limited capacity of the actuator

History

School

  • Architecture, Building and Civil Engineering

Published in

12th International Conference on Advances in Steel-Concrete Composite Structures (ASCCS 2018)

Citation

AL-SHUWAILI, M., PALMERI, A. and LOMBARDO, M., 2018. A novel one-sided push-out test for shear connectors in composite beams. IN: Albero, V. ...et al. (eds.) Proceedings of the 12th International Conference on Advances in Steel-Concrete Composite Structures (ASCCS 2018), Universitat Politècnica de València, València, Spain, 27-29th June, pp. 169-176.

Publisher

© The Authors. Published by Universitat Politecnica de Valencia

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2018

Notes

This is an Open Access Article. It is published by Universitat Politecnica de Valencia under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

ISBN

9788490486016

Language

en

Location

Universitat Politècnica de València, València, Spain,