| Project/Area Number |
23760434
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Osaka Institute of Technology |
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Principal Investigator |
OHYAMA Osamu 大阪工業大学, 工学部, 准教授 (70411410)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 橋梁 / 火災 / 耐火被覆 |
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| Research Abstract |
Recently, the fire attack for the bridges due to turning over accident of a tank lorry vehicle, incendiary fire and so on trends to increase in Japan and also in foreign countries. One of the examples of such accident in Japan occurred in Ikebukuro line of Metropolitan Expressway at the beginning of August in 2008. In this case, the height of the steel girder was sunk from 1200mm to 700mm due to shear buckling in the region of the support. As a consequence, this urban expressway was closed about two and half months for repairs. According to the announcement of Metropolitan Expressway Company Limited, the economic loss by this accident reached to approximately 4.5 Billion Yen. To prevent a serious damage of the bridge due to fire attack, the authors have been proposed the adoption of Fire Protection Panel (hereafter referred to as FPP) for the viaduct or normal bridge only where they have high occurrence possibility of fire accident. The author carried out the fire test of steel-concrete composite girder with and without FPP. This paper reports on the outline of the FPP and the experimental results of the temperature distributions in the steel girder.
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