摘要
波形钢腹板组合曲线箱梁腹板具有手风琴效应,纵向弹性模量很小,相比混凝土腹板箱梁,容易发生畸变变形,因此需要设置一定数量的横隔板减小截面畸变的影响。文章采用有限元Ansys模拟分析曲线箱梁高宽比、曲率半径对横隔板间距的影响,按截面翘曲正应力与弯曲正应力之比≤10%的原则,拟合出横隔板合理间距计算公式,对实际工程应用具有一定的参考价值。
Because the webs of curved box girder with corrugated steel webs have accordion effect, the longitudinal elastic modulus is small. Compared to the concrete box girder, the cross-section with corrugated steel webs may be more prone to distortion deformation, so numbers of diaphragm should be set to reduce cross-sectional distortion. Based on the ratio of sectional warping normal stress to bending stress ratio less than 10%, the influence of the aspect ratio and radius to the diaphragm spacing was studied by Ansys software, fitting the reasonable formula. It has a certain reference value for practical application.
出处
《现代交通技术》
2016年第6期36-38,47,共4页
Modern Transportation Technology
基金
国家自然科学基金项目(项目编号:51378106)
关键词
波形钢腹板
曲线箱梁
横隔板
翘曲正应力
corrugated steel webs
curved box girder
diaphragm
warping normal stress
