2004 Fiscal Year Final Research Report Summary
Seismic design of steel building with H-section columns and energy absorbing elements
| Project/Area Number |
15560485
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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 |
Building structures/materials
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| Research Institution | Chiba University |
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Principal Investigator |
MORITA Koji Chiba University, Faculty of Engineering, Professor, 工学部, 教授 (20057227)
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| Co-Investigator(Kenkyū-buntansha) |
HARADA Yukihiro Chiba University, Graduate School of Science and Technology, Associate Professor, 大学院・自然科学研究科, 助教授 (10272791)
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| Project Period (FY) |
2003 – 2004
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| Keywords | H-section column / Strong axis column / Weak axis column / High-strength bolted tensile connection / Subassemblage test / Energy absorption / Seismic design |
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| Research Abstract |
The purpose of this research is to experimentally investigate structural behavior of a steel framework with H-section columns and semi-rigid beam-end connections. This research will help to promote mechanically and economically rational seisimic design of steel buildings using H-section columns. The conclusions of this research are summarized as follows.
1.Structural behaviors of flange-split-T and web-split-T tensile connections are experimentally investigated by tensile loading tests. Observed full plastic strength and ultimate strength of the connections can be estimated well by plastic analysis.
2.Structural behavior of a subassemblage with flange-split-T semi-rigid moment connections is experimentally investigated by cyclic loading tests. The tensile connection behavior in the subassemblage specimen is in good agreement with that in the tensile specimens ; this indicates that the structural behavior of steel frameworks with the flange-split-T semi-rigid moment connections can be predicted by using the knowledge about the flange-split-T tensile connections. It is also observed at the subassemblage loading test that flat plates in a panel zone and angle members at the flange attached with high-strength bolts show good out-of-plane reinforcement effect on plate elements in the H-section columns.
3.Stmctural behavior of a subassemblage with web-split-T moment connections is experimentally investigated by cyclic loading test. The tensile connection behavior in the subassemblage specimen is in good agreement with that in the tensile specimens; this is the same as the flange-split-T connections.
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