高强钢薄壁箱形截面梁稳定性.pdf
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40 6 2010 6
1 2 2 1
高 磊 , 孙宏才, 徐关尧, 戚 亮
( 1 , 210007; 2 , 100093)
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Stability study on thin-walled box- section beam of high-strength steel
1 2 2 1
Gao Lei , Sun Hongcai , Xu Guanyao , Qi Liang
( 1 Enginee ing Institute of Enginee ing Co ps, PLAUST, Nanjing 210007, China;
2 No. 2 Institute of Enginee Co ps, Gene al Equipment Headqua te s, Beij ing 100093, China)
Abstract: Basing on elasto- plasticity la ge deflection finite element theo y of the thin-walled steel plate, all kinds of impe fections
we e conside ed. The pa amete s that included the slende ness atio, the width-thickness atio of flange and the section side atio
we e studied. Conside ing the elative buckling of the local and ove all of the beam, the ultimate load- ca ying calculation
exp ession is put fo wa d, which takes the width- thickness atio of flange and the section side atio as the pa amete s. The
effectiveness of the exp ession is ve ified. T he esults can p ovide efe ence fo the design of the thin-walled box- section beam of
high- st ength steel.
Keywords: box beam; stability facto ; thin-walled box- section beam; high- st ength steel; elative buckling
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