主筋を梁せい方向に重ねた全数重ね継手の付着割裂強度に関する実験的研究

概要

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Many of previous studies regarding main reinforcing steel bars (rebars) lap splice describe the respective rebars as being lapped side by side (horizontal splicing). The case of lap splice in which the respective spliced rebars are lapped by placing one on top of the other (vertical splicing), as used in precast shell form system, etc., are still not too clear. In order to comprehend the bond splitting strength of vertical splicing, a pure bending test was conducted. The test parameters were the transverse reinforcement ratio and existence of inner supplementary tie. As the result, the effect of transverse reinforcement on bond splitting strength of vertical splicing was about twice of horizontal splicing. An equation was obtained regarding the bond splitting strength of vertical splicing that reflect the difference with the horizontal splicing.
2000-03-30