2005 Fiscal Year Final Research Report Summary
Development of High Performance Seismic Members
| Project/Area Number |
14205066
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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 | 一般 |
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| Research Field |
構造工学・地震工学
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| Research Institution | Tohoku University |
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Principal Investigator |
SUZUKI Motoyuki Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (60124591)
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| Co-Investigator(Kenkyū-buntansha) |
AKIYAMA Mitsuyoshi Tohoku University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (00302191)
NAITO Hideki Tohoku University, Graduate School of Engineering, Research Associate, 大学院・工学研究科, 助手 (50361142)
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| Project Period (FY) |
2002 – 2005
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| Keywords | High Strength Materials / Steel-Concrete Composite Structure / High Performance Seismic Member / Reinforced Concrete / Concrete Encased Steel / Shear Strength Characteristic / Stress-Strain Relationship / Ductility Evaluation |
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| Research Abstract |
In this study, the development and the seismic design approach of high performance structures using RC and SRC members have been done. The results of the study from 2002 to 2004 are shown below.
1. Shear strength characteristic of RC beams using high-strength materials
The shear loading tests of RC beams without stirrup using high-strength concrete of compressive strength ranging to 130MPa have been carried out.
(1)A shear strength equation of RC beams without stirrup using high-strength concrete has been suggested.
(2)A shear strength equation of RC beams with stirrup using high-strength concrete and reinforcing bars has been suggested by referring to the previous test results.
2. Uniaxial compressive strength characteristic of RC columns using high-strength materials
The uniaxial compressive loading tests of RC columns (rectangular and circular section) have been carried out.
(1)By measuring the strain distribution of the core concrete, it is possible to quantitatively evaluate the changing of failure region caused by the concrete strength and the quantity of tie reinforcement.
(2)By using the compressive failure energy, the stress-strain relationship of confined concrete of normal to high strength has been formulated.
3. Reversed cyclic loading tests of SRC columns and the ductility evaluation
Load-deflection characteristics, plastic curvature distribution, and strain distribution of longitudinal bars and H-shaped steel were measured in the cyclic loading tests of SRC columns.
(1)The buckling analysis model of longitudinal bars has been suggested. Using this model, it is possible to fairly evaluate the displacement at the spalling of RC and SRC columns.
(2)A ductility evaluation of SRC columns focused on the local buckling of the H-shaped steel has been suggested. The same response can be obtained by using proposed method to calculate the ultimate displacement, the buckling length and plastic length of flange plate.
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Research Products
(26 results)
