Development of Precast Concrete Beams with Splice-bar Joints of Longitudinal Bars at the Midspan
By H. Watanabe, T. Terashima, A. Hattori and T. Korenaga
Concrete Journal, Vol.46, No.11, Nov. 2008
- Synopsis
- In this study, bending and shear tests were conducted to clarify the performance of reinforced concrete beams formed by joining together two precast beam-end elements at the midspan using cast-in-place concrete with splice-bar joints of longitudinal bars. A total of 27 specimens were used, and the parameters were strength of the longitudinal bars and the cast-in-place concrete, transverse reinforcement spacing and the amount of U-shaped reinforcement in the lap splice region. As a result of the test, an evaluation method for bond splitting strength taking into account the effect of the U-shaped bars and the influence of the stress gradient, developed by modifying evaluation formulas currently in use, was proposed.
- Keywords:
- reinforced concrete, precast, lap splices, splice-bar, bond splitting strength
