EFFECT OF LATERAL-ROTATIONAL RESTRAINT OF CONTINUOUS BRACES ON LATERAL BUCKLING STRENGTH FOR H-SHAPED STEEL BEAMS WITH COMPRESSIVE AXIAL FORCE AND FLEXURAL MOMENT
EFFECT OF LATERAL-ROTATIONAL RESTRAINT OF CONTINUOUS BRACES ON LATERAL BUCKLING STRENGTH FOR H-SHAPED STEEL BEAMS WITH COMPRESSIVE AXIAL FORCE AND FLEXURAL MOMENT
复制标题
连续支撑横向旋转约束对受压轴力和弯矩的H型钢梁横向屈曲强度的影响
DOI：
10.3130/aijs.81.1321
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Y. Yoshino
中科院分区：
文献类型：
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作者：
Y. Kimura;Y. Sugita;Y. Yoshino
安装钢阻尼器的H型钢梁在弯矩作用下还承受轴压作用，其屈曲性能比仅受弯矩作用时更不稳定。另一方面，连续支撑对防止H形梁的侧向屈曲是有效的。本文阐明了带连续支撑的H形截面梁在弯矩和轴压作用下的侧向屈曲性能，并采用能量法和数值分析方法计算了梁的弹塑性侧向屈曲应力或连续支撑的侧向加劲力和转动加劲力矩。
H-shaped steel beams connected to steel dampers are subjected to compressive axial forces in addition to flexural moment, so that its buckling behavior is more unstable than that to only flexural moment. On the other hand, it is effective for continuous braces to prevent the lateral bucking of H-shaped beams. In this paper, the lateral buckling behavior for H-shaped beams with continuous braces under flexural moment and compressive axial force is clarified, and elasto-plastic lateral buckling stresses of the beams or lateral stiffing force and rotational stiffing moment of continuous braces are evaluated by the energy method and numerical analyses.