2010 Fiscal Year Final Research Report
Research on valuation method establishment of the hinge rotation limit in end of a RC beam
| Project/Area Number |
20560536
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Building structures/materials
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Fumio 東京理科大学, 工学部, 教授 (80385533)
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| Project Period (FY) |
2008 – 2010
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| Keywords | RC梁 / 材端ヒンジ / 回転限界 / せん断余裕度 / 靭性能 / 主筋座屈 / 拘束効果 |
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| Research Abstract |
It aims at building the technique evaluated about the rotation limit(ductility ability appraisal method・shear design method) in a reinforced concrete beam(RC beam) in this research. The RC beam which is 1/2-1/3 scale of real size carried out the shear and flexial experiment in 2008 and the 2009, and the partial experiment which modeled the hinge segment of the beam end was conducted in the 2010.The hinge region length in a beam end needed to be decided, and the result checked being greatly affected in strength of concrete and an arrangement of steel rods(double line ratio, the amount of shear reinforcement, the space of shear reinforcement) by influence, in order to have evaluated the rotation limit in RC beam. Evaluation by the degree of margin to the flexial capacity of the shear capacity is appropriate to a valuation method. However, when stress concentrated without a beam end hinge region spreading, it proposed that it was necessary to take into consideration that a rotation limit is determined at an early stage.
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