Seismic Behavior of Concrete-Filled Square Steel Tubular Column-to-Beam Connections with through Diaphragm

Abstract:

This paper studies seismic behavior of concrete-filled square steel tubular column-to-beam connection with through diaphragm, which is popular in Japan, but rarely used in China. Four full-scale cruciform specimens are tested under low-cyclic reversed load and the result of study indicates that diaphragm-through joints have stable hysteretic characteristics and enough energy dissipation capacities to be used in the field. Details of the steel beam flange connecting with the diaphragm have obvious effects on joint ductility and energy dissipation, and the seismic behavior of joints with circular fillet at the connecting zone are better than that reinforced by taper plate welded to the beam flanges. For the specimens failed in the beam, diaphragm thickness, size of concrete cast holes, width-to-thickness ratio of the tube, and the level of axial load in the column have less influence on joint seismic behavior.

• Periodical: Applied Mechanics and Materials (Volumes 94-96)
• Pages: 1344-1351
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.94-96.1344
• Online since: September 2011
• Authors: Ji Kui Miao, Zhi Hua Chen
• Keywords: Column-to-Beam Connection, Concrete-Filled Square Steel Tubular Column, Low-Cyclic Reversed Loading, Seismic Behavior, Through Diaphragm

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