摘要
本文结合弹性薄壁梁理论和解析有限条法,用最小势能原理,推出曲线梁桥的弹性控制微分方程。该方程组可分为弯扭方程组和畸变方程组,前者为Vlasov方程,后者为Dabrowski方程的推广。试验结果表明,所提供的近似解可供初步设计应用。
In the paper, the thin-walled beam theory has been directly combined with the analytic finite strip technique to derive the elastic governing differentil equations for curved multi-girder bridges by the principle of minimum potential energy. These equations consist of two groups: those for bending-torsion and those for distortion. The former is Vlasov equation and the latter is an extension of Dabrowski equation. The test results show that the offered approximate solution can be used for preliminary design.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
1990年第1期49-62,共14页
China Journal of Highway and Transport
关键词
曲线梁桥
微分方程
弹性控制
Curved multi-girder bridges Thin-walled beam theory Classical bending-torsion equations Analytic finite strip method Differentil equations for distorton
