加劲板横向加劲肋刚性判断公式的一种推导  

A Derivation of the Formula for Distinguishing Rigid Transverse Rib of Stiffened Plate

作　　者：张华敏 ZHANG Huamin

机构地区：[1]上海同豪土木工程咨询有限公司,上海20092

出　　处：《上海公路》2019年第1期61-63,共3页Shanghai Highways

摘　　要：《公路钢结构桥梁设计规范》(JTG D64-2015)第5.1.6条关于刚性加劲肋刚度要求的规定引自日本规范,但其中判断横向加劲肋为刚性的式(5.1.6-3)与日本规范有所不同。基于我国规范附录B.0.1条的均匀受压加劲板弹性屈曲系数的计算公式,设加劲板与被横肋分割后的子板块两者弹性屈曲系数相等,经过演算,得到了日本规范中的公式。因而推测我国规范有误。Item 5.1.6 in Specifications for Design of Highway Steel Bridge(JTG D64-2015) provides formulas to distinguish rigid ribs.These formulas are from Japanese specifications.But formula(5.1.6-3) for distinguishing rigid transverse rib is different from the one in Japanese specifications.Based on elastic buckling coefficient formulas provided by article B.0.1 in(JTG D64-2015),setting buckling coefficients of total plate buckling to equal sub plates buckling, the formula in Japanese specifications is derived.Therefore, formula(5.1.6-3) in(JTG D64 -2015) may be incorrect.

关 键 词：钢桥规范 加劲板 横向加劲肋 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]