EFFECT OF LATERAL-ROTATIONAL RESTRAINT AND STRENGTH OF CONTINUOUSLY BRACES ON LATERAL BUCKLING LOAD FOR H-SHAPED BEAMS
EFFECT OF LATERAL-ROTATIONAL RESTRAINT AND STRENGTH OF CONTINUOUSLY BRACES ON LATERAL BUCKLING LOAD FOR H-SHAPED BEAMS
复制标题
连续支撑横向旋转约束和强度对H型梁横向屈曲载荷的影响
DOI：
10.3130/aijs.78.193
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Jun Ogawa
中科院分区：
文献类型：
--
作者：
Y. Kimura;Y. Yoshino;Jun Ogawa
当连续支撑与h型梁的上翼缘连接时，期望连续支撑能够有效地抑制h型梁的侧向变形。本文用能量法推导了连续支撑h型梁的弹性侧向屈曲载荷及支撑的侧向刚度和转动刚度要求。其次，采用修正长细比对连续支撑的弹性侧向屈曲载荷进行弹塑性屈曲应力评估。最后，阐明了支撑刚度与强度之间的关系。
When the continuously braces such as folded-roof plate can be jointed to the upper flanges of H-shaped beams� the continuously braces are expected to be effective to restrain the lateral deformation of H-shaped beams. In this paper� the elastic lateral buckling load of H-shaped beams with continuously bracings and the required lateral and rotational rigidities of braces are developed with the energy method. Next� the elasto-plastic buckling stress is evaluated using the modified slenderness ratio with the elastic lateral buckling load for continuously braces. Finally� the relationship between the rigidity and strength of braces is clarified.