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.

• 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。