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Bolted connectors with mechanical coupler embedded in concrete: Shear resistance under static load

Authorized Users Only
2020
Authors
Milićević, Ivan
Milosavljević, Branko
Pavlovic, Marko
Spremic, Milan
Article (Submitted Version)
,
Techno Press
Metadata
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Abstract
Contemporary design and construction of steel-concrete composite structures employs the use of prefabricated concrete elements and demountable shear connectors in order to reduce the construction time and costs and enable dismantling of elements for their potential reuse at the end of life of buildings. Bolted shear connector with mechanical coupler is presented in this paper. The connector is assembled from mechanical coupler and rebar anchor, embedded in concrete, and steel bolt, used for connecting steel to concrete members. The behaviour and ultimate resistance of bolted connector with mechanical coupler in wide and narrow members were analysed based on push-out tests and FE analyses conducted in Abaqus software, with focus on concrete edge breakout and bolt shear failure modes. The effect of concrete strength, concrete edge distance and diameter and strength of bolts on failure modes and shear resistance was analysed. It was demonstrated that premature failure by breakout of concr...ete edge occurs when connectors are located 100 mm or closer from the edge in low-strength and normal-strength reinforced concrete. Furthermore, the paper presents a relatively simple model for hand calculation of concrete edge breakout resistance when bolted connectors with mechanical coupler are used. The model is based on the modification of prediction model used for cast-in and post-installed anchors loaded parallel to the edge, by implementing equivalent influence length of connector with variable diameter. Good agreement with test and FE results was obtained, thus confirming the validity of the proposed method.

Keywords:
steel-concrete composite structures / shear connectors / mechanical couplers / shear resistance / concrete edge breakout resistance / finite element analysis
Source:
Steel and Composite Structures, 2020, 36, 3, 321-337
Publisher:
  • Techno Press
Projects:
  • Research on condition assessment and improvement methods of civil engineering structures in view of their serviceability, load-bearing capacity, cost effectiveness and maintenance (RS-36048)

DOI: 10.12989/scs.2020.36.3.321

ISSN: 1598-6233

WoS: 000555602000006

[ Google Scholar ]
URI
https://grafar.grf.bg.ac.rs/handle/123456789/2076
Collections
  • Катедра за материјале и конструкције
Institution
GraFar
TY  - JOUR
AU  - Milićević, Ivan
AU  - Milosavljević, Branko
AU  - Pavlovic, Marko
AU  - Spremic, Milan
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2076
AB  - Contemporary design and construction of steel-concrete composite structures employs the use of prefabricated concrete elements and demountable shear connectors in order to reduce the construction time and costs and enable dismantling of elements for their potential reuse at the end of life of buildings. Bolted shear connector with mechanical coupler is presented in this paper. The connector is assembled from mechanical coupler and rebar anchor, embedded in concrete, and steel bolt, used for connecting steel to concrete members. The behaviour and ultimate resistance of bolted connector with mechanical coupler in wide and narrow members were analysed based on push-out tests and FE analyses conducted in Abaqus software, with focus on concrete edge breakout and bolt shear failure modes. The effect of concrete strength, concrete edge distance and diameter and strength of bolts on failure modes and shear resistance was analysed. It was demonstrated that premature failure by breakout of concrete edge occurs when connectors are located 100 mm or closer from the edge in low-strength and normal-strength reinforced concrete. Furthermore, the paper presents a relatively simple model for hand calculation of concrete edge breakout resistance when bolted connectors with mechanical coupler are used. The model is based on the modification of prediction model used for cast-in and post-installed anchors loaded parallel to the edge, by implementing equivalent influence length of connector with variable diameter. Good agreement with test and FE results was obtained, thus confirming the validity of the proposed method.
PB  - Techno Press
T2  - Steel and Composite Structures
T1  - Bolted connectors with mechanical coupler embedded in concrete: Shear resistance under static load
EP  - 337
IS  - 3
SP  - 321
VL  - 36
DO  - 10.12989/scs.2020.36.3.321
ER  - 
@article{
author = "Milićević, Ivan and Milosavljević, Branko and Pavlovic, Marko and Spremic, Milan",
year = "2020",
url = "https://grafar.grf.bg.ac.rs/handle/123456789/2076",
abstract = "Contemporary design and construction of steel-concrete composite structures employs the use of prefabricated concrete elements and demountable shear connectors in order to reduce the construction time and costs and enable dismantling of elements for their potential reuse at the end of life of buildings. Bolted shear connector with mechanical coupler is presented in this paper. The connector is assembled from mechanical coupler and rebar anchor, embedded in concrete, and steel bolt, used for connecting steel to concrete members. The behaviour and ultimate resistance of bolted connector with mechanical coupler in wide and narrow members were analysed based on push-out tests and FE analyses conducted in Abaqus software, with focus on concrete edge breakout and bolt shear failure modes. The effect of concrete strength, concrete edge distance and diameter and strength of bolts on failure modes and shear resistance was analysed. It was demonstrated that premature failure by breakout of concrete edge occurs when connectors are located 100 mm or closer from the edge in low-strength and normal-strength reinforced concrete. Furthermore, the paper presents a relatively simple model for hand calculation of concrete edge breakout resistance when bolted connectors with mechanical coupler are used. The model is based on the modification of prediction model used for cast-in and post-installed anchors loaded parallel to the edge, by implementing equivalent influence length of connector with variable diameter. Good agreement with test and FE results was obtained, thus confirming the validity of the proposed method.",
publisher = "Techno Press",
journal = "Steel and Composite Structures",
title = "Bolted connectors with mechanical coupler embedded in concrete: Shear resistance under static load",
pages = "337-321",
number = "3",
volume = "36",
doi = "10.12989/scs.2020.36.3.321"
}
Milićević I, Milosavljević B, Pavlovic M, Spremic M. Bolted connectors with mechanical coupler embedded in concrete: Shear resistance under static load. Steel and Composite Structures. 2020;36(3):321-337
Milićević, I., Milosavljević, B., Pavlovic, M.,& Spremic, M. (2020). Bolted connectors with mechanical coupler embedded in concrete: Shear resistance under static load.
Steel and Composite StructuresTechno Press., 36(3), 321-337.
https://doi.org/10.12989/scs.2020.36.3.321
Milićević Ivan, Milosavljević Branko, Pavlovic Marko, Spremic Milan, "Bolted connectors with mechanical coupler embedded in concrete: Shear resistance under static load" 36, no. 3 (2020):321-337,
https://doi.org/10.12989/scs.2020.36.3.321 .

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