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Seismic Performance of Concrete Filled Steel Tube Column Building Using Ultra High Strength Steel H-SA700

Kazuhiro Hayashi, Wataru Hachimori, and Shogo Kaneda
Department of Arch. and Civil Eng., Toyohashi University of Technology Toyohashi, Japan
Abstract—The ultra-high strength steel H-SA700 is a relatively new and environment-friendly structural steel with no requirement for intensive heat treatment during manufacturing. In this paper, the seismic performance of concrete filled steel tube (CFT) column building using ultra high strength steel H-SA700 was investigated analytically. For the time history response analysis, a three-dimensional seismic response analysis program STERA_3D was used. The target building is 50.4 by 46.0 meters, and 12 floors above the ground. The building model, using size reduced H-SA700 steel columns as opposed to the conventional steel ones used in the reference model, is able to secure seismic performance almost equal to that of the reference model. The model reduces the usage of steel material by about 20%, and the cross sectional dimension reduces by 10% to the reference model using conventional steel. Furthermore, the time history response analysis revealed that the columns on the upper floors of the building can be further reduced in size. 

Index Terms—ultra-high strength steel, concrete filled steel tube, H-SA700, time history response analysis

Cite: Kazuhiro Hayashi, Wataru Hachimori, and Shogo Kaneda, "Seismic Performance of Concrete Filled Steel Tube Column Building Using Ultra High Strength Steel H-SA700," International Journal of Structural and Civil Engineering Research, Vol. 7, No. 2, pp. 92-98, May 2018. doi: 10.18178/ijscer.7.2.92-98
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