Structural Design PLUS ONE Co.

Japan

Structural Design PLUS ONE Co.

Japan

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Kaneda K.,Structural Design Plus One Co. | Kaneda K.,Shibaura Institute of Technology | Kimura Y.,Nagasaki University | Miyahara N.,Nagasaki University | Wada A.,Tokyo Institute of Technology
Journal of Structural and Construction Engineering | Year: 2011

In the seismic behaviors of the frames with fixed column bases, the soft story mechanism may occur when the frames are subjected to unexpected seismic horizontal force. This paper proposes the new columns support systems on the first story. The first story columns consist of the reinforced concrete downside column and the steel topside column, and their joints with the anchor bolts and the shear plates are supposed to be pinned. This paper clarifies the damage distribution and the seismic capacity for the steel moment resisting frames with these support system to perform the collapse mechanism which means the maximum story drift when the ductility demand reach the plastic deformation capacity for a member first.


Kaneda K.,Nihon University | Takeuchi T.,Tokyo Institute of Technology | Takahashi K.,Structural Design PLUS ONE Co. | Tokunou M.,Tokyo Institute of Technology | And 2 more authors.
AIJ Journal of Technology and Design | Year: 2012

The authors have proposed mid-floor leveled column base system. The first story columns consist of the reinforced concrete downside column and the steel topside column, and their joints with the anchor bolts and the shear plates are supposed to be pinned. In this paper, the building designed by using mid-floor leveled column base system of applicability and seismic performance are studied. In order to compare mid-floor leveled column base system and conventional column base system, the building designed by using exposed type column base and embedded type column base are studied.


Kimura Y.,Tohoku University | Kaneda K.,Structural Design PLUS ONE Co. | Kaneda K.,Nihon University | Wada A.,Tokyo Institute of Technology
Journal of Structural and Construction Engineering | Year: 2012

For E-Defense project, it was shown that the soft story mechanism on 1st story occurred when the 4 story steel moment resisting frame with fixed base column was subjected to huge seismic force. To prevent the plastic collapse of the column on 1st story, our previous paper suggested the new column support system on 1st story, which consist of the reinforced concrete downside column and the steel topside column. In this paper, the fishbone-shaped frames are applied to estimate the damage distribution and the collapse deformation capacity of the steel moment resisting frames with these support systems, and the column and beam demands to keep the columns elastic are clarified.


Kimura Y.,Tohoku University | Kaneda K.,Structural Design Plus one co. | Kaneda K.,Nihon University | Wada A.,Tokyo Institute of Technology
Journal of Structural and Construction Engineering | Year: 2013

In the steel frames, the column base is allowed to yield after beam yielding subjected to large earthquake in Japanese design codes such as "The Building Standard Low of Japan" by Building Center of Japan. If the frames have unexpected seismic horizontal force, the soft story mechanism may occur. To prevent the plastic collapse of the column on 1st story, our previous paper suggested the new column support system on 1 st story, which consist of the reinforced concrete downside column and the steel topside column. In this paper, the virtual work method is applied to estimate the damage distribution and the collapse deformation capacity of the steel moment resisting frames with these support systems, and the shear and axial demands the column joints on 1st story are clarified.


Kaneda K.,Nihon University | Kimura Y.,Tohoku University | Mutsukura K.,Nagasaki University | Kadoya H.,Okabe Co. | And 2 more authors.
Journal of Structural and Construction Engineering | Year: 2011

In our previous papers, the new column support system is suggested, and it is shown that the columns base for the steel moment resisting fbmes never yield during large earthquake by the dynamic analyses. In this paper, the cyclic loading tests are performed for the partial steel fbmes with the embedded column base or our proposal new column support system. The columns for the proposal support system are shown to keep elastic by the large plastic range of the frames such as the angle of 0.05, even though the columns for the embedded column base become as much plastic as the beams.


Kimura Y.,Tohoku University | Furukawa S.,Tohoku University | Kaneda K.,Structural Design PLUS ONE Co. | Watanabe T.,Okabe Co. | Wada A.,Tokyo Institute of Technology
Journal of Structural and Construction Engineering | Year: 2015

Our previous papers proposed a pin column support system on 1st story, which consist of the reinforced concrete downside column and the steel topside column to keep column elastic against base shear force issued by the huge seismic force. The joint consists of an anchor bolt, a cover plate on the RC column and a shear plates into RC column. In this paper, the vertical loading tests are performed to clarify the transmission system of axial force for the joints between the reinforced concrete downside column and the steel topside column. Finally, the yielding strength and ultimate strength are estimated by the closed form solution of the experimental results. © 2015, Architectural Institute of Japan. All rights reserved.

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