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Reversed Cyclic Loading Tests on Precast Beam-Column Joints with Headed Reinforcement
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 Title & Authors
Reversed Cyclic Loading Tests on Precast Beam-Column Joints with Headed Reinforcement
Kim, In-Gyu; Yu, Sung-Yong;
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One of the most complex reinforcement location in the precast building frame is the beam-column joint in a prefabricated construction. It is generally resulted from the vortical bars of column, anchorage bars of beam, and bars of hoop. Particularly the hooked anchorage bars of beam are confronted with hoop and main column bars. The headed reinforcement is considered to place them easily and to reduce the anchorage length in a precast construction. Reversed cyclic loading tests are performed on four beam-column specimens to evaluate the strength and behavior of beam to column and column to column connections. The result of test shows that the headed reinforcement has a similar performance than that of hooked reinforcement in a precast specimen with strong column and weak beam joints. The splice column joints which are used frequently in the domestic fields also show reliable behaviors in those tests with strong column and weak beam joints.
beam-column joint;headed reinforcement;splice;anchorage;cyclic loading;precast;
 Cited by
ACI Committee 318, 'BuiIdine Code Requirements for Reinforced Concrete and Commentary - ACI 318-99' ACI, Detroit, MI

ACI-ASCE Committee 352, 'Reconmendations for Design of Beam-Column Joints in Monolithic Reinforced Concrete Structures,' ACI 352-91, American Concrete Institute, Farmington Hills, 1991

John W. Wallace, Scott W. Mcconnell, Piush Gupta, and Paul A. Cote., 'Use of Headed Reinforcement in Beam-Column Joints Subjected to Earthquake Loads,' ACI Structural Journal, September-October 1998. pp. 590-606

Devries, R.A., Jirsa, J.O., and Bashandy, T., 'Anchorage Capacity in Concrete of Headed Reinforcement with Shallow Embedments,' ACI Struc. Journal, V96, No.5, Sep-Oct. 1999, PP.728-736