2001 Fiscal Year Final Research Report Summary
A Fundamental Study on Strain and Stress Condition of Beam-Column of Steel Square Tubs close to it's Diaphagm
| Project/Area Number |
11650597
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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 | Niigata Inst. of Tech. |
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Principal Investigator |
HODZUMI Hideo Niigata Inst. of Tech., Faculty of Eng., Professor, 工学部, 教授 (10084336)
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| Project Period (FY) |
1999 – 2001
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| Keywords | cold-rolled steel square tube / beam-column / cyclic loading / structural behavior / strain condition / stress condition |
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| Research Abstract |
Beam-Column made of a cold-rolled steel square tube sometimes fracture at its column base. To elucidate the mechanism of fracture, as a fundamental study, I investigate strain and stress distribution close to the diaphragm under cyclic bending load. Experimental variables were width-thickness ratio, and existence of heat treatment (normalize). I calculated the stress hysteresis from strain hysteresis and found that the bottom of the column is under the influence of being restrained by the diaphragm. And I also investigate the stress by means offinite element method. The results of analysis coincide with the results of experiment.
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