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Steel plates which help to reduce initial cost
(1) TMCP type SM570 steel plate (Ausformed bainitic steel)
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Short time delivery has been realized equivalent to that for the ordinary steel. |
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Welding preheating is unnecessary. |
(2) LP steel plates (Longitudinally profiled steel plate)
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Plate thickness varies longitudinally by a maximum of 5 mm/M. (Consultation is available up to 7 mm/M.) |
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The plates serve to reduce steel weight |
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This also contributes to improving appearance of bridges and preventing corrosion at a step joint by omitting insert plates. |
(3) Constant minimum yield point steel plate
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The same specified minimum yield point is guaranteed as that of thinner products even if plate thickness is over 40mm, which contributes to reducing design plate thickness. |
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| 2. |
Steel plates contributing to reducing LCC, and related technologies
(1) JIS atmospheric corrosion resistant steel plates.
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Painting is unnecessary for minimum maintenance. |
(2) echnology supporting the application of weathering steels.
(Weather act treatment)
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Treatment for accelerating growth of protective rust |
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Reducing initial rust and rust-laden water. |
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Expanding application scope of JIS atmospheric corrosion resistant steel
(Restricted amount of airborne salt : 0.05mdd -> 0.4mdd) |
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| 3. |
Steel plates to improve reliability
(1)High strength steel with improved weldabilty
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Reliability of weld joints is increased and construction cost is reduced by use of high tensile strength steel which can omit welding preheating or lower the preheating temperature. |
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| (4) |
Steel plates to help provide a more attractive bridge design
(1)Steel plates suitable for hard bending
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High toughness is assured in consideration of the required toughness after bending |
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Example of use of LP steel plate:
HINOMOTO Bridges constructed by the Ministry of Land,Infrastructure and Transport
Example of Weather Act treated weathering steel bridge.
(the Izukidani Bridge)
Example of using HT780 which realizes to lower welding preheating temperature
(the Great Akashi Bridge)
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