| Project/Area Number |
11650464
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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 |
土木材料・力学一般
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| Research Institution | Yokohama National University |
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Principal Investigator |
TSUBAKI Tatsuya Yokohama National University, Faculty of Engineering, Professor, 工学部, 教授 (40134902)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2000: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1999: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | Fiber reinforced material / Cementitious material / Constitutive model / Steel fiber / Mechanical properties / Combined stresses / Repeated loading |
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| Research Abstract |
Modeling a constitutive relationship to express the behavior of fiber reinforced cementitious materials under various stress conditions was investigated in this research. The mechanical behavior of steel fiber reinforced concrete (SFRC) was experimentally studied and constitutive models were obtained based on the test results as summarized in the following.
1. Deformational properties under uniaxial tension and shear :
The peak load and the displacement at the peak are influenced by the fiber shape (i.e., indented straight type, hooked type and anchored type). The load-displacement curve of each fiber can be expressed by a multi-linear model. The overall behavior of SFRC is modeled by superimposing the behavior of each fiber and considering the interaction between fibers.
2. Deformational properties under repeated loading :
The effect of repeated loading on the load-displacement curve is different for each fiber type. The load-displacement relationship is expressed by a multi-linear model.
3. Effect of fiber embedment length on the pullout properties :
The peak load and the displacement at the peak are expressed by a bilinear model with respect to fiber embedment length. The effect of embedment length on the load-displacement curve and the AE event pattern depends on the fiber shape.
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