不同半径、汽车荷载对曲线桥抗倾覆稳定性研究

Study on the anti-overturning stability of curved bridge with different radius and vehicle load

以曲线梁桥为工程背景,对《公路钢筋混凝土及预应力混凝土桥涵设计规范》(征求意见稿)中关于曲线桥抗倾覆稳定安全系数计算方法进行补充完善,并对其计算公式进行了改进。利用新公式计算不同曲率半径及工况下结构抗倾覆稳定系数,并与"征求意见稿"中抗倾覆稳定安全系数进行对比。

In this paper,the curved beam bridge is used as the engineering background,and the calculation method of the anti-overturning stability coefficient in the‘draft＇of‘Design Code Road Reinforced Concrete and Prestressed Concrete Bridges and Culverts ＇is supp-lemented,and its formula is improved. The anti-overturning stability coefficient of the structure with different radius of curvature and different working conditions is calculated by using the new evaluation system,and the anti-overturning stability coefficient is compared with the draft.