Corrugated steel web bridges
1. Overview
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Corrugated steel web PC bridges are composite structures of concrete and steel, which replace the PC bridge web with corrugated steel plates, and this rational form of bridge structure was developed in France in the 1980s.
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Because of the accordion effect of the corrugated steel web, the rigidity of the steel plate web in the axial direction is extremely low, allowing the introduction of prestress force to be effectively transmitted to the upper and lower floor slabs, and the corrugation provides shear yield strength for buckling, thereby eliminating the need for stiffening members.
2. Key Features
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Because lightweight corrugated steel is used for the web, which makes up 10-30% of the main girder weight, the main girders can be made lighter, thereby extending span length and saving construction labor. Also, the understructure can be made more slender.
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The corrugated shape of the steel plates provides high shear yield strength for buckling, eliminating the need for stiffening members.
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Because the accordion effect of the corrugated steel provides no resistance to axial force, prestress can be efficiently introduced to just the concrete floor slabs.
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Because no concrete web is needed, it allows for more streamlined construction with a shorter construction period and lower construction costs.
3. Our Construction
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Shin-Meishin Expressway Saho River Bridge (PC superstructure work) construction
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Shin-Meishin Expressway Shimo-Otowa River Bridge (PC superstructure work) construction
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Higashihiroshima-Kure Road Kotaki River Bridge PC superstructure construction