| Title |
An Experimental Study on Moment Resisting Connection of H-shaped Beam-to-square Tube Column Using Fillet welding |
| Authors |
Chung Jin-An ; Suh Sung-Yeon ; Choi Sung-Mo |
| Keywords |
Beam-to-column connection ; Vertical stiffener ; Outer diaphragm ; Fillet welding |
| Abstract |
In seismically active regions such as Japan, most of steel structures are constructed using moment resisting frames that are composed of square tubular section columns and H-shaped beams. Through-type diaphragm was widely used in the case beam-to- box column connection in spite of theirs complexity of fabrication. The Hyogoken-Nanbu earthquake in 1995, however, caused very severe damage to through-type diaphragm. Most of through-type diaphragm connections were damaged in both welding part of beams and columns. While outer diaphragm have merit of reducing the process of fabrication, because it is not need the cutting of the column to connect, and of convince of assuring concrete compactness of concrete filled-steel tubular columns. This study focuses on the development of a new connection method of H-shaped beam-to-square tubular column connections. The connection method using external stiffener of outer diaphragm was presented. A specific type of H-shaped beam-to-square tubular column connections with vertical stiffener has been experimentally studied under cyclic loading. Six test specimens have been tested at the structural Laboratory of Kyushu University. The structural performance of the test specimens is discussed well as resulting conclusions. |