| Project/Area Number |
17360210
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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 |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
NIWA Junichiro Tokyo Institute of Technology, Department of Civil Engineering, Professor, 大学院・理工学研究科, 教授 (60164638)
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| Co-Investigator(Kenkyū-buntansha) |
YOKOTA Hiroshi Port and Airport Research Institute, Structural Mechanics Division, Head of Division, 港湾空港技術研究所・構造強度研究室, 室長 (50344312)
MIKI Tomohiro Tokyo Institute of Technology, Department of Civil Engineering, Assistant Professor, 大学院・理工学研究科, 助手 (30401540)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥16,000,000 (Direct Cost: ¥16,000,000)
Fiscal Year 2006: ¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 2005: ¥11,500,000 (Direct Cost: ¥11,500,000)
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| Keywords | prestressed concrete beam / shear failure / external cable method / truss analogy / shear capacity / shear reinforcement / nonlinear analysis / prestressed concrete segment |
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| Research Abstract |
The purpose of this research is to evaluate the shear resisting mechanism of prestressed concrete (PC) structural members based on the mechanical consideration and to provide the adequate safety against the shear failure of PC structural members. To achieve this purpose, experimental and numerical investigations have been done during 2005 and 2006. Obtained results are as follows :
In 2005, experiments and numerical analyses were carried out to evaluate the shear resisting mechanism of PC members. Various experimental data were collected throughout the world. These data were used to evaluate the accuracy and validity of the simplified truss model. Parametric numerical analyses were also performed to formulate the simplified truss model for PC structural members with shear reinforcement. Finally, the simplified truss model to explain the shear resisting mechanism of PC members has been proposed.
In 2006, the experiments of externally prestressed concrete beams and also segmental PC beams with external cables were performed. These experiments have been done to examine the accuracy and validity of the simplified truss model. From the experimental and numerical examinations, it has been confirmed that the simplified truss model can be adopted to evaluate the shear resisting mechanism and also to predict the shear resisting capacity of PC members.
The obtained results of this research have been published in various journals, such as JSCE Journal of Material, Concrete Structures and Pavements, and the Proceeding of Japan Concrete Institutes, etc.
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