‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.5 ( May 1982 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
Introducing Composite Structures Using Newly Developed Checkered Steel Pipe and Deformed Flange H-shapes
Masakatsu Sato, Michihiko Hara, Masao Ishiwata, Eisuke Yamanaka |
Synopsis : For a steel-concrete composite structure, a fail-safe mechanism of stress transmission in the steel-concrete interface is of primary importance. The authors have developed H-shapes with deformed flange surfaces and steel pipes with checkered projections on their surfaces as a means of increasing bond resistance with concrete. The composite new steel pipes and the encased new H composite beams have been subjected to several kinds of tests including pull-out, push-out and bending, and the following points are confirmed: (1) Checkered projection is found to be significantly effective in resisting push-out and bending loads. (2) The mechanical properties of the encased deformed flange H composite gbeams are found to be at most equivalent to that of reinforced concrete beams using large-diameter deformed bars. |
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