Experimental Study on Moment–Plastic Rotation Capacity of Hybrid Beams
Publication: Journal of Bridge Engineering
Volume 10, Issue 4
Abstract
The moment–inelastic rotation behavior of hybrid steel girder bridges is experimentally investigated. Six welded girders having compact flanges and webs are statically loaded under three-point bending condition in order to simulate the interior pier section of a two-span continuous girder. Six girders, three with hybrid sections and three with homogeneous sections, are designed with three types of web slenderness ratios, resulting in three pairs of hybrid and homogeneous girders. The inelastic rotation capacities obtained from the experimental tests are then compared between hybrid and homogeneous girders. In addition, the results are compared with the prediction moment–inelastic rotation curve proposed in 1998 by White and Barth. It is concluded that, under the condition in this study, hybrid girders have more deformation capacity than homogeneous girders, and that the prediction curve is more conservative for a specimen with higher web slenderness ratio.
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Acknowledgment
The writers would like to gratefully thank Dr. Theodore V. Galambos of the University of Minnesota, for his valuable comments on some experimental results and conclusions.
References
American Association of State Highway and Transportation Officials (AASHTO). (1986). “Guide specification for alternate load factor design procedures for steel beam bridges using braced compact section.” Washington, D.C.
American Association of State Highway and Transportation Officials (AASHTO). (1998). LRFD bridge design specifications, 2nd Ed., Washington, D.C.
American Institute of Steel Construction (AISC). (1978). “Specification for the design, fabrication and erection of structural steel for buildings.” Chicago.
American Society of Civil Engineers (ASCE). (1968). “Report of the subcommittee 1 on hybrid beams and girders Joint ASCE-AASHTO committee on flexural members: Design of hybrid steel beams.” Proc., ASCE, 94(ST6), 1397–1426, June.
Barth, K. E., and White, D. W. (1998). “Finite element evaluation of pier moment–rotation characteristics in continuous-span steel I girders.” Eng. Struct., 20(8), 76–778.
Barth, K. E., and White, D. W. (2000). “Inelastic design of steel I-girder bridges.” J. Bridge Eng., 5(3), 179–190.
Carskaddan, P. S., Haaijer, G., and Grubb, M. A. (1982). “Computing the effective plastic moment.” Eng. J., 19(1), 12–15.
Grubb, M. A., and Carskaddan, P. S. (1979). “Autostress design of highway bridges: Phase 3. Initial moment-rotation test.” AISI Project 188, American Iron and Steel Institute, Washington, D. C.
Grubb, M. A., and Carskaddan, P. S. (1981). “Autostress design of highway bridges: Phase 3. Moment-rotation requirements.” AISI Project 188, American Iron and Steel Institute, Washington, D.C.
Hartnagel, B. A., and Barker, M. G. (2000). “Inelastic design and testing of steel bridge comprising noncompact sections.” Eng. J., 37(1), 3–12.
Japanese Society of Steel Construction (JSSC). (2002). “Draft of the design specifications for hybrid girders based on Limit State Design.” Tech. Rep., No. 53, Japan.
Nozaka, K. (1995). “Study on the auto-stress design procedure for two-span continuous girders.” Senior Paper, Ritsumeikan Univ., Shiga, Japan.
Schilling, C. G. (1985). “Autostress design of highway bridges: Phase 3. Moment–rotation tests of steel bridge girders.” AISI Project 188, American Iron and Steel Institute, Washington, D.C.
Schilling, C. G. (1988). “Moment-rotation tests on steel bridge girders.” J. Struct. Eng., 114(1), 134–149.
White, D. W., and Barth, K. E. (1998). “Strength and ductility of compact-flange I-girders in negative bending.” J. Constr. Steel Res., 45(3), 241–280.
Yamasaki, K. (2003). “Experimental study on application of SM570 steel to inelastic design.” Master’s thesis, Ritsumeikan Univ., Shiga, Japan.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 10 • Issue 4 • July 2005
Pages: 490 - 496
Copyright
© 2005 ASCE.
History
Received: Jul 29, 2003
Accepted: Aug 19, 2004
Published online: Jul 1, 2005
Published in print: Jul 2005
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