Shear resistance of headed shear studs welded on welded plates in composite floors
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2019
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The present paper deals with composite steel-concrete floor with headed shear studs welded onto a flat steel plate. In bridges applications, which are the focus of the paper, very thick steel plates are often combined with a moderate layer of concrete. And, in some wide slab applications, the most performant lay-out for the shear studs could lead to them being welded on top of an existing butt weld between steel plates. Presently, we are ignorant about the shear resistance of the weld-to-weld interface and its possible detrimental effect on the overall resistance of the system. In addition, the ultimate behaviour of the system combines the flexural resistance of a
composite cross-section followed by, when the concrete is cracked, the development of a compressed arch anchored in these headed shear studs, emphasising the importance of such connections. Both questions are addressed in the paper and, based on experiments, an in-depth analysis on the system’s behaviour at ultimate limit st...ate is provided. Two types of tests are performed: pure shear tests complying to the push-out tests of Annex B of
EN 1994-1-1 and beam tests with four-point loading where the studs in the shear spans are loaded with longitudinal shear. For each pair of tests, the reference specimen was made with a steel plate without a butt weld or comprising a butt weld directly under the line of shear studs. Typical floor dimensions from bridge applications are studied. No difference in shear capacity, stiffness or failure mode could be observed. However, it was noticed that the classic design rules provided in EN1994-1-1 cannot accurately predict the failure load of the chosen configuration. Based on assumptions made following the observations of the failure mechanisms, the authors
propose a theoretical evaluation of the capacity of the system.
Ključne reči:
Four-point bending tests / Longitudinal shear resistance / Composite floor / Butt weld / Push-out testIzvor:
Engineering Structures, 2019, 197, 109412, 1-16Izdavač:
- Elsevier Ltd.
DOI: 10.1016/j.engstruct.2019.109412
ISSN: 0141-0296
WoS: 000503100200084
Scopus: 2-s2.0-85069975800
Institucija/grupa
GraFarTY - JOUR AU - Molkens, Tom AU - Dobrić, Jelena AU - Rossi, Barbara PY - 2019 UR - https://grafar.grf.bg.ac.rs/handle/123456789/1772 AB - The present paper deals with composite steel-concrete floor with headed shear studs welded onto a flat steel plate. In bridges applications, which are the focus of the paper, very thick steel plates are often combined with a moderate layer of concrete. And, in some wide slab applications, the most performant lay-out for the shear studs could lead to them being welded on top of an existing butt weld between steel plates. Presently, we are ignorant about the shear resistance of the weld-to-weld interface and its possible detrimental effect on the overall resistance of the system. In addition, the ultimate behaviour of the system combines the flexural resistance of a composite cross-section followed by, when the concrete is cracked, the development of a compressed arch anchored in these headed shear studs, emphasising the importance of such connections. Both questions are addressed in the paper and, based on experiments, an in-depth analysis on the system’s behaviour at ultimate limit state is provided. Two types of tests are performed: pure shear tests complying to the push-out tests of Annex B of EN 1994-1-1 and beam tests with four-point loading where the studs in the shear spans are loaded with longitudinal shear. For each pair of tests, the reference specimen was made with a steel plate without a butt weld or comprising a butt weld directly under the line of shear studs. Typical floor dimensions from bridge applications are studied. No difference in shear capacity, stiffness or failure mode could be observed. However, it was noticed that the classic design rules provided in EN1994-1-1 cannot accurately predict the failure load of the chosen configuration. Based on assumptions made following the observations of the failure mechanisms, the authors propose a theoretical evaluation of the capacity of the system. PB - Elsevier Ltd. T2 - Engineering Structures T1 - Shear resistance of headed shear studs welded on welded plates in composite floors EP - 16 IS - 109412 SP - 1 VL - 197 DO - 10.1016/j.engstruct.2019.109412 ER -
@article{ author = "Molkens, Tom and Dobrić, Jelena and Rossi, Barbara", year = "2019", abstract = "The present paper deals with composite steel-concrete floor with headed shear studs welded onto a flat steel plate. In bridges applications, which are the focus of the paper, very thick steel plates are often combined with a moderate layer of concrete. And, in some wide slab applications, the most performant lay-out for the shear studs could lead to them being welded on top of an existing butt weld between steel plates. Presently, we are ignorant about the shear resistance of the weld-to-weld interface and its possible detrimental effect on the overall resistance of the system. In addition, the ultimate behaviour of the system combines the flexural resistance of a composite cross-section followed by, when the concrete is cracked, the development of a compressed arch anchored in these headed shear studs, emphasising the importance of such connections. Both questions are addressed in the paper and, based on experiments, an in-depth analysis on the system’s behaviour at ultimate limit state is provided. Two types of tests are performed: pure shear tests complying to the push-out tests of Annex B of EN 1994-1-1 and beam tests with four-point loading where the studs in the shear spans are loaded with longitudinal shear. For each pair of tests, the reference specimen was made with a steel plate without a butt weld or comprising a butt weld directly under the line of shear studs. Typical floor dimensions from bridge applications are studied. No difference in shear capacity, stiffness or failure mode could be observed. However, it was noticed that the classic design rules provided in EN1994-1-1 cannot accurately predict the failure load of the chosen configuration. Based on assumptions made following the observations of the failure mechanisms, the authors propose a theoretical evaluation of the capacity of the system.", publisher = "Elsevier Ltd.", journal = "Engineering Structures", title = "Shear resistance of headed shear studs welded on welded plates in composite floors", pages = "16-1", number = "109412", volume = "197", doi = "10.1016/j.engstruct.2019.109412" }
Molkens, T., Dobrić, J.,& Rossi, B.. (2019). Shear resistance of headed shear studs welded on welded plates in composite floors. in Engineering Structures Elsevier Ltd.., 197(109412), 1-16. https://doi.org/10.1016/j.engstruct.2019.109412
Molkens T, Dobrić J, Rossi B. Shear resistance of headed shear studs welded on welded plates in composite floors. in Engineering Structures. 2019;197(109412):1-16. doi:10.1016/j.engstruct.2019.109412 .
Molkens, Tom, Dobrić, Jelena, Rossi, Barbara, "Shear resistance of headed shear studs welded on welded plates in composite floors" in Engineering Structures, 197, no. 109412 (2019):1-16, https://doi.org/10.1016/j.engstruct.2019.109412 . .