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Steel and Composite Structures
  Volume 1, Number 3, September 2001 , pages 295-312

Experimental study on simplified steel reinforced concrete beam-column joints in construction technology
Masaru Teraoka, Koji Morita, Satoshi Sasaki and Daisuke Katsura(Japan)

    The purpose of this paper is to propose a new type of steel reinforced concrete (SRC) beam-columnrnjoints and to examine the structural performance of the proposed joints, which simplify the construction procedurernof steel fabrication, welding works, concrete casting and joint strengthening. In the proposed beam-column joints,rnthe steel element of columns forms continuously built-in crossing of H-sections ( ), with adjacent flanges ofrncolumn being connected by horizontal stiffeners in a joint at the level of the beam flanges. In addition, simplifiedrnlateral reinforcement ( ) is adopted in a joint to confine the longitudinal reinforcing bars in columns.rnExperimental and analytical studies have been carried out to estimate the structural performance of the proposedrnjoints. Twelve cruciform specimens and seven SRC beam-column subassemblage specimens were prepared andrntested. The following can be concluded from this study: (1) SRC subassemblages with the proposed beam-columnrnjoints show adequate seismic performances which are superior to the demand of the current code; (2) The yieldrnand ultimate strength capacities of the beam-to-column connections can be estimated by analysis based on thernyield line theory; (3) The skeleton curves and the ultimate shear capacities of the beam-column joint panel arernpredicted with a fair degree of accuracy by considering a simple stress transfer mechanism.
Key Words
    new type of SRC beam-column joint; simplifying construction procedure; structural performance;limit analysis; yield line theory.
Masaru Teraoka, Technology Development Division, Fujita Corporation, 2025-1 Ono, Atsugi-shi, Kanagawa, JapanrnKoji Morita, Department of Design and Architecture, Faculty of Engineering, Chiba University 1-33 Yayoi-cho, Chiba-shi, Chiba, JapanrnSatoshi Sasaki and Daisuke Katsura, Technology Development Division, Fujita Corporation, 2025-1 Ono, Atsugi-shi, Kanagawa, Japan

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