Performance of the Modified Precast Beam to Column Connection Placed on a Concrete Corbel

Document Type : Research Papers


1 Department of Civil Engineering, Isfahan University of Technology, Isfaha, Iran

2 Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran


Precast concrete structures in Iran are generally designed as continuous columns with hinged beams, thereby making them simple frames. In this system in site show walls in two directions of buildings guaranteed lateral resisting system. However, in order to obtain a seismic resisting frame, the connection between beam and column should be moment resisting and ductile, allowing the formation of plastic hinges at these connections as well as at the column base. In this paper, experimental tests were conducted for precast concrete elements with modified beam-column connection under cyclic load. The precast connection considered for this study was a semi precast beam with welded longitudinal bars to embedded plate into beam where the beam is connected to corbel with welding embedded plated to plate on the corbel. According to the results, the connection shows suitable performance until drift of 2.75% in terms of stiffness, damping and moment resistance.


ACI Committee. (2014). Building code requirements for reinforced concrete and commentary, ACI 318-14/ACI 318R-14, American Concrete Institute, Detroit.
ACI T1.1-01. (2011). Acceptance criteria for moment frames based on structural testing, Reported by ACI Innovation Task Group 1 and Collaborators.
Bahrami, S., Madhkhan, M. and Nazemi, N. (2017a). “Behavior of two new moment resisting precast beam to column connections subjected to lateral loading”, Journal of Engineering and Applied Sciences, (in press).
Bahrami, S., Madhkhan. M. and Shirmohammadi, F. (2017b). “Behavior of two new moment resisting precast beam to column connections subjected to lateral loading”, Engineering Structures, 132, 808-821.
Bahrami, S. and Madhkhan, M. (2017). “Experimental performance of a new precast beam to column connection using hidden corbel”, Asian Journal of Civil Engineering, 18, 791-806.
Bull, D. and Park, R. (1986). “Seismic resistance of frames incorporating precast prestressed concrete beam shells”, PCI Journal, 31, 54-93.
Cheok, G. (1997). “Hybrid reinforced precast frame for seismic regions”, PCI Journal, 42, 20-32.
Dolan, W., Pessiki, S. (1989). “Model testing of precast concrete connections”, PCI Journal, 34, 84-103.
Dolan, CW. and Stanton, JF.  (1987). “Moment resistant connections and simple connections”, PCI Journal, 32, 62-74.
Elliot, K., Davies, G. and Ferreira, M. (2003). “Can precast concrete structures be designed as semi-rigid frames? Part 1: The experimental evidence”, The Structural Engineer, 81, 14-27.
French, C. and Amu, O. (1989). “Connections between precast elements-failure outside connection region”, Journal of Structural Engineering, 115, 316-40.
Ghassemieh, M., Saneeinia, Z. and Baei, M. (2017), “Concrete filled tubular bracing subjected to cyclic loading”, Civil Engineering Infrastructures Journal (CEIJ), 50(1), 165-177.
Görgün, H. (1996). “Semi-rigid behavior of connections in precast concrete structures”, Doctoral Dissertation, University of Nottingham.
Khaloo, A. and Parastesh, H. (2003). “Cyclic loading response of simple moment-resisting precast concrete beam-column connection”, ACI Structural Journal, 100(4), 440-445.
Mahmoudi, M., Mortazavi, S.M. and Ajdari, S. (2016). “The effect of spandrel beam's specification on response modification factor of concrete coupled shear walls”, Civil Engineering Infrastructures Journal (CEIJ), 59(1), 33-43.
Parastesh, H., Hajirasouliha, I. and Ramezani, R. (2014). “A new ductile moment-resisting connection for precast concrete frames in seismic regions: An experimental investigation”, Engineering Structures, 70, 44-57.
Shariatmadar, H. (2014). “An investigation of seismic response of precast concrete beam to column connections: Experimental study”, Asian Journal of Civil Engineering-Building and Housing, 15, 49-67.
Sucuoglu, H. (1995). “Effect of connection rigidity on seismic response of precast concrete frames”, PCI Journal, 40, 94-103.