USE OF SFRCC IN SHALLOWLY EMBEDDED STEEL COLUMN BASES

概要

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This paper is concerned with the shallowly embedded steel column base that consists of an exposed column base and a covering reinforced SFRCC floor slab. A series of tests are conducted for this type of column bases that are subjected to horizontal cyclic loading leading to very large deformations, and the effects of the floor slab on the strength and ductility are examined. The elastic stiffness, maximum strength and dissipated energy of the column bases when featured with SFRCC increase by 40%, 70% and 70% compared with those of corresponding column bases with concrete floor slab. Better bonding behavior is notable for SFRCC, and the maximum strength and dissipated energy further increase by 15% to 30% and 70% to 90%, respectively, by careful arrangement of rebars. Although the punching shear failure in the floor slab around the column is the main failure mode, it is practical to design the column base so that the column bottom would yield and fail before the punching failure of the column base.
一般社団法人日本建築学会の論文
2009-03-27