Comparison
of Strength Capacity for Steel Building Structures
in the United States and Japan
Summary:
This paper presents a study on U.S. and Japanese
seismic design provisions stipulated for steel moment
resisting and braced frames. Width-to-thickness requirements,
structural classification, seismic force reduction coefficients,
and design seismic forces are compared, and differences
and similarities are discussed. Unreduced seismic forces
are relatively similar between the two countries, but
significant differences are present for the seismic force
reduction coefficients that allow for system ductility.
Expected strength capacity of braced frames is estimated
in consideration of seismic force reduction coefficients,
strength carried by braces relative to frames, and buckling
and post-buckling strengths of braces. Design force requirements
are significantly larger for Japanese braced frames than
for the corresponding U.S. braced frames, when the frames
are arranged with braces of medium lengths.
Format:
Pages : 13
Size: 585 kb
Author : Motohide Tada , Tomonori Fukui , Masayoshi
Nakashima ,
Charles W.
Roeder
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