Research and Development > JFE TECHNICAL REPORT > No.16 Special Issue on “Engineering,” “Steel Section Products,” and “Iron and Steel Powders” > Development of New H-Section Steel Shape with Inner Rib, “J-grip H,“ and Its Application to Steel Concrete Composite Diaphragm Wall

No.16 Special Issue on “Engineering,” “Steel Section Products,” and “Iron and Steel Powders”

Development of New H-Section Steel Shape with Inner Rib, “J-grip H,“ and Its Application to Steel Concrete Composite Diaphragm Wall

ONDA Kunihiko    KOJO Rinya    AOKI Hidemi

Abstract

JFE Steel has developed new H-section steel shapes, J-grip H, which shows excellent adhesion performance with concrete materials, due to ribs formed inside flange during hot rolling and applied to the steel-concrete (SC) composition diaphragm walls as the wall body. J-grip H greatly contributes to cost reduction by thinning wall thickness of SC composition structure. This paper describes manufacturing methods, basic mechanical data of SC composition structure, such as adhesion and bending performance, and an example of actual application of J-grip H at the examination construction of the Nakanoshima new line.

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