东南大学学报（自然科学版）2011，Vol.41Issue(5)：1065-1069,5.DOI:10.3969/j.issn.1001-0505.2011.05.032
波形钢腹板箱梁畸变应力分析
Stress analysis of box girders with corrugate steel webs under distorsion
摘要
Abstract
According to mechanical characteristics of box girders with corrugated steel webs and theory of box girders, the warping normal stress of box girders with corrugated steel webs caused by distortion is studied. Considering that corrugated webs have fold effects, the corrugated webs are regarded as an orthotropic plate. Distortion governing differential equations of box girders with corrugated steel webs are derived under the equilibrium relation of plane force system within them. Their distortion angle and distortion bimoment are obtained using the beam elastic foundation (BEF) method , and then the longitudinal distortion stress is obtained. An analytical example is given to compare two types of box girders, concrete box girders and box girders with corrugated steel webs. The results of the example demonstrate that the box girders with corrugated steel webs have less lateral frame stiffness than concrete ones; thus, the distortional warping normal stress of box girders with corrugated steel webs is larger than that of concrete box girders.关键词
波形钢腹板/箱梁/力系平衡/畸变Key words
corrugated steel webs/ box girders/ balanced system of forces/ distortion分类
交通工程引用本文复制引用
杨丙文,黎雅乐,万水,张建东..波形钢腹板箱梁畸变应力分析[J].东南大学学报（自然科学版）,2011,41(5):1065-1069,5.基金项目
国家自然科学基金资助项目(50078014). （50078014）
