高靱性繊維補強セメント複合材料を用いた梁の付着割裂実験

摘要

Recently, RC buildings with core wall structures have been constructed. The coupling beams connecting core walls are possible to be failed by bond splitting during an earthquake. Short span beams using SHCC (Strain Hardening Cementitious Composites) with PVA fibers have been developed to improve brittle behavior. In this study, cantilever-shaped specimens were subjected to bond splitting tests to investigate bond characteristics of SHCC beams. The experimental bond strength shows higher value than calculated strength by conventional formulas for RC beams. The effect of SHCC can be expressed by modifying the term of lateral reinforcement ratio in these formulas.