Vol. 18, No. 4, pp. 745-752 (2022)
SHEAR BEHAVIOR OF NOVEL DEMOUNTABLE BOLTED SHEAR
CONNECTOR FOR PREFABRICATED COMPOSITE BEAM
Yun-Biao Luo 1, 2, Shuo-Ke Sun 2, Jia-Bao Yan 1, 2, *, Yu-Cai Zhao 2 and Dennis Lam 3
1 Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin, 150080, China
Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin,150080, China
2 School of Civil Engineering, Tianjin University, Tianjin 300350, China
3 Department of Civil and Structural Engineering, University of Bradford, Bradford, West Yorkshire, BD7 1DP, UK
* (Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 23 October 2021; Revised: 25 April 2022; Accepted: 2 May 2022
DOI:10.18057/IJASC.2022.18.4.2
 View Article |
Export Citation: Plain Text | RIS | Endnote |
ABSTRACT
Bolted shear connectors offer alternatives to achieve steel-concrete composite action instead of conventional welded headed studs especially for prefabricated constructions and demountable composite structures. This paper firstly proposed a new type of demountable steel-concrete bolted shear connectors based on the double-nut friction-grip high strength bolted connector, which modify the upper nut into conical locking nut. This paper performed ten full scale push-out tests to study shear behaviors of the developed new type of connectors. Testing parameters included bolt configuration, strength, diameter of bolts and strength of infilled grout. Test results indicate that shear behaviors and slip capacity of the conventional bolted connectors are significantly improved when the bolted connector incorporating with conical locking nut. The influences of these studied parameters on shear behaviour of novel bolted shear connectors are revealed and discussed. The developed novel demountable connector exhibits an average 25% improvement in ultimate shear resistance over conventional bolted connectors. Moreover, the shear stiffness of the developed bolted connectors is about six times of the conventional bolted connector through eliminating the clearance between steel flange hole and bolt shank.
KEYWORDS
Bolted connector, Demountable shear connector, Push-out test, Composite structures
REFERENCES
[1] Dedic D.J. and Klaiber F.W., “High-Strength Bolts as Shear Connectors in Rehabilitation Work”, 6, 41-46, 1984.
[2] Kwon G., Engelhardt M.D. and Klingner R.E., “Behavior of post-installed shear connectors under static and fatigue loading”, Journal of Constructional Steel Research, 66, 532-541, 2010.
[3] Kwon G., Engelhardt M.D. and Klingner R.E., “Experimental Behavior of Bridge Beams Retrofitted with Postinstalled Shear Connectors”, Journal of Bridge Engineering, 16, 536-545, 2011.
[4] Pavlović M., Marković Z., Veljković M. and Buđevac D., “Bolted connectors vs. headed studs behaviour in push-out tests”, Journal of Constructional Steel Research, 88, 134-149, 2013.
[5] Moynihan M.C. and Allwood J.M., “Viability and performance of demountable composite connectors”, Journal of Constructional Steel Research, 99, 47-56, 2014.
[6] Dai X.H., Lam D. and Saveri E., “Effect of Concrete Strength and Stud Collar Size to Shear Capacity of Demountable Shear Connectors”, Journal of Structural Engineering, 141, 04015025, 2015.
[7] Liu X., Bradford Mark A. and Lee Michael S.S., “Behavior of High-Strength Friction-Grip Bolted connectors in Sustainable Composite Beams”, Journal of Structural Engineering, 141, 04014149, 2015.
[8] Ataei A., Bradford M.A. and Liu X., “Experimental study of composite beams having a precast geopolymer concrete slab and deconstructable bolted connectors”, Engineering Structures, 114, 1-13, 2016.
[9] Ban H., Uy B., Pathirana S.W., Henderson I., Mirza O. and Zhu X., “Composite beams with blind bolts under sustained loads”, Journal of Constructional Steel Research, 112, 196-207, 2015.
[10] Henderson I.E.J., Zhu X.Q., Uy B. and Mirza O., “Dynamic behaviour of steel–concrete composite beams with different types of shear connectors. Part I: Experimental study”, Engineering Structures, 103, 298-307, 2015.
[11] Henderson I.E.J., Zhu X.Q., Uy B. and Mirza O., “Dynamic behaviour of steel–concrete composite beams with different types of shear connectors. Part II: Modelling and comparison”, Engineering Structures, 103, 308-317, 2015.
[12] Pathirana S.W., Uy B., Mirza O. and Zhu X., “Bolted and welded connectors for the rehabilitation of composite beams”, Journal of Constructional Steel Research, 125, 61-73, 2016.
[13] Yang F., Liu Y., Jiang Z. and Xin H., “Shear performance of a novel demountable steel-concrete bolted connector under static push-out tests”, Engineering Structures, 160, 133-146, 2018.
[14] C. Eurocode 4, “Design of composite steel and concrete structures”, Part, 2004.
[15] Johnson R.P. and Buckby R.J., “Composite structures of steel and concrete”, Wiley Online Library, 1975.
[16] Suwaed Ahmed S. H. and Karavasilis Theodore L., “Novel Demountable Shear Connector for Accelerated Disassembly, Repair, or Replacement of Precast Steel-Concrete Composite Bridges”, Journal of Bridge Engineering, 22, 04017052, 2017.
[17] Suwaed A.S. and Karavasilis T.L., “Removable shear connector for steel-concrete composite bridges”, Steel and Composite Structures, 29, 107-123, 2018.
[18] ACI Committee, American Concrete Institute, International Organization for Standardization, “Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary”, 2008.
[19] Rehman N., Lam D., Dai X. and Ashour A.F., “Experimental study on demountable shear connectors in composite slabs with profiled decking”, Journal of Constructional Steel Research, 122, 178-189, 2016.
[20] Eurocode 4. EN 1994, “Design of composite steel and concrete structures. Part 1 General rules and rules for buildings”, 2004.
[21] ANSI/AISC 360, “Specification for Structural Steel Buildings”, American Institute of Steel Construction, Chicago, Illinois, 2010.
[22] AASHTO, “AASHTO LRFD Bridge Design Specifications”, 6th Edition, AASHTO, 2012.
[23] Luo Y., Hoki K., Hayashi K. and Nakashima M., “Behavior and Strength of Headed Stud–SFRCC Shear Connection. II: Strength Evaluation”, Journal of Structural Engineering, 04015113, 2016.
[24] An L. and Cederwall K., “Push-Out Tests on Studs in High Strength and Normal Strength Concrete”, Journal of Constructional Steel Research, 36, 15-29, 1996.