| Seismic vulnerability evaluation of axially loaded steel built-up laced members I： experimental results |
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| 基金项目： | Supported by： Federal Highway Administration Under Grant No. DTFH61-98-C-00094 .Acknowledgements This work was conducted at the University at Buffalo and was supported by the Federal Highway Administration under contract number DTFH61-98-C- 00094 to the Multidisciplinary Center for Earthquake Engineering Research. However, any opinions, findings, conclusions, and/or recommendations presented in this paper are those of the authors and do not necessarily reflect the views of the sponsors. |
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| 摘 要： | An experimental program was initiated to investigate the seismic performance of built-up laced steel brace members. Quasi-static testing of twelve typical steel built-up laced member （BLM） specimens was conducted. These were designed to span a range of parameters typically encountered for such members based on findings from a survey of commonly used shapes and details that have been historically used. The specimens were subdivided into groups of three different cross-sectional shapes, namely built-up I-shape section, and built-up box shapes buckling about the x or the y axis. Within each group, global and local buckling slenderness ratios had either kl/r values of 60 or 120, and b/t ratios of 8 or 16. The specific inelastic cyclic behavior germane to each specimen, and general observations on overall member hysteretic behavior as a function of the considered parameters, are reported. A companion paper （Lee and Bruneau 2008） investigates this observed response against predictions from analytical models, and behavior in the perspective of system performance.
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| 关 键 词： | 易损性 试验研究 钢建筑 技术性能 |
Seismic vulnerability evaluation of axially loaded steel built-up laced members I: experimental results |
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| Authors: | Kangmin Lee Michel Bruneau |
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| Institution: | [1]Department of Architectural Engineering, Chungnam National University, Korea [2]Department of Civil, Structural, and Environmental Engineering, University at Buffalo, State University of New York, USA |
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| Abstract: | An experimental program was initiated to investigate the seismic performance of built-up laced steel brace members. Quasi-static
testing of twelve typical steel built-up laced member (BLM) specimens was conducted. These were designed to span a range of
parameters typically encountered for such members based on findings from a survey of commonly used shapes and details that
have been historically used. The specimens were subdivided into groups of three different cross-sectional shapes, namely built-up
I-shape section, and built-up box shapes buckling about the x or the y axis. Within each group, global and local buckling slenderness ratios had either kl/r values of 60 or 120, and b/t ratios of 8 or 16. The specific inelastic cyclic behavior germane to each specimen, and general observations on overall member
hysteretic behavior as a function of the considered parameters, are reported. A companion paper (Lee and Bruneau 2008) investigates
this observed response against predictions from analytical models, and behavior in the perspective of system performance.
Supported by: Federal Highway Administration Under Grant No. DTFH61-98-C-00094 |
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| Keywords: | quasi-static testing built-up laced compression member experimental program brace |
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