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波形钢腹板箱梁的扭转应力分析
引用本文:杨丙文,黎雅乐,万水,张建东.波形钢腹板箱梁的扭转应力分析[J].华南理工大学学报(自然科学版),2012,40(2):19-22,34.
作者姓名:杨丙文  黎雅乐  万水  张建东
作者单位:1. 东南大学交通学院,江苏南京,210096
2. 江苏省交通科学研究院,江苏南京,210017
基金项目:国家自然科学基金资助项目(50078014)
摘    要:与普通混凝土腹板箱梁相比,波形钢腹板箱梁由于其结构的特殊性,截面抗扭刚度较小,由扭转产生的翘曲应力较大.为深入研究波形钢腹板箱梁扭转产生的翘曲应力,文中在箱梁理论的基础上,根据波形钢腹板箱梁的力学特性,将波形钢腹板作为正交异性板,采用乌氏第二理论,推导出波形钢腹板箱梁的扭转微分方程,并采用初参数法求得约束扭转正应力和约束扭转剪应力.将计算结果与已有的试验结果相比较,结果表明文中分析的精确度较高.

关 键 词:箱梁  波形钢腹板  扭转应力  扭转微分方程  乌氏第二理论

Stress Analysis of Box Girder with Corrugate Steel Webs Under Torsion
Yang Bing-wen , Li Ya-le , Wan Shui , Zhang Jian-dong.Stress Analysis of Box Girder with Corrugate Steel Webs Under Torsion[J].Journal of South China University of Technology(Natural Science Edition),2012,40(2):19-22,34.
Authors:Yang Bing-wen  Li Ya-le  Wan Shui  Zhang Jian-dong
Institution:1.School of Transportation,Southeast University,Nanjing 210096,Jiangsu,China; 2.Jiangsu Transportation Research Institute,Nanjing 210017,Jiangsu,China)
Abstract:As compared with common concrete box girders,box girders with corrugated steel webs are of lower torsional rigidity and greater torsional normal stress due to their structural particularity.In order to deeply investigate the warping stress loading on the box girders with corrugated steel webs under torsion,corrugated steel webs are taken as orthotropic plates based on the theory and the mechanical characteristics of box girders,with corrugated steel webs,and a torsion differential equation of box girders with corrugated steel webs is deduced by using the se-cond theory of Wu.Then,the constraint torsional normal stress and shear stress are calculated by employing the initial parameter method,and the results are compared with the test ones.It is found that the stress analysis in this paper is correct and more precise.
Keywords:box girder  corrugated steel web  torsional stress  torsion differential equation  the second theory of Wu
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