| Project/Area Number |
08455252
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Nagoya Institute of Technology |
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Principal Investigator |
ICHINOSE Toshikatsu Nagoya Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (10151474)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1997: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1996: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | reinforced concrete / reinforcing bars / transverse reinforcement / bond / splices / rigid-body-spring-model / 付着 / 重ね長さ |
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| Research Abstract |
The objective of this study is to develop a rational and reliable equation to evaluate bond splitting strength of reinforcing bars in concrete. In 1996, a series of experiments of lap splices were conducted with the following parameters :
(a) ratio of transverse reinforcement (0.3% and 1,2%) ;
(b) with or without sub-ties
(c) clearance between main bars and transverse reinforcement
(d) splice length (10times or 40 times of main bar diameter)
The third parameter was especially important to verify whether our model based on the assumption of triangular beams was correct or not. The results were against our prediction. Thus, in 1997, the model was revised. In the new model, beam section with splice was partitioned using Voronoi diagram, and anlyzed using the rigid-body-spring-model. The results were integrated along the splice. Much better agreement was obtained.
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