| Project/Area Number |
08555118
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Saitama University |
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Principal Investigator |
YOSHINAKA Ryunoshin Saitama University, Department of Civil & Environmental Engineering Professor., 工学部, 教授 (00008822)
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| Co-Investigator(Kenkyū-buntansha) |
OSADA Masahiko Saitama University, Department of Civil & Environmental Engineering Research Ass, 工学部, 助手 (00214114)
YAMABE Tadashi Saitama University, Department of Civil & Environmental Engineering Associate Pr, 工学部, 助教授 (40125894)
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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 |
¥11,700,000 (Direct Cost: ¥11,700,000)
Fiscal Year 1997: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1996: ¥7,800,000 (Direct Cost: ¥7,800,000)
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| Keywords | Discontinuous rock / Rock bolt / Reinforcement system / 補強効果 / 不連続変形法 / 地山特性曲線 / トンネル |
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| Research Abstract |
Rock bolts are used as a principal supporting member in discontinuous rock mass. To clarify the mechanism of reinforcement induced by rock bolts, direct shear tests were conducted on the specimen with a simple discontinuous joints through which bolts were mounted. As the results, the reinforcing effects are estimated by proposed equation. And the equation system to interprete the mechanical behavior of rock bolts and rock mass are incorporated to the elasto-plastic finite element analysis. The numerical results by the developed finite element code are obtained for the underground excavation and reinforcement system. The numerical results are compared with the experimental results, it is clarified that the reinforced behavior of rock are represented by the proposed methods. And Manifold method are also investigated to examine the applicability for the excavation problem in discontinuous rocks.
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