拖带船队撞击钢围堰防撞墩的数值模拟分析

Numerical Simulation for the Towing Fleet Impact on Anti-collision Pier of Steel Cofferdam

拖带船队是京杭运河中的重要船型之一,运河中船桥相撞击事故时有发生。为了探讨拖带船队对运河桥梁桥墩的撞击作用,以便更好地设计运河桥墩的防撞设施,该文利用ANSYS/LS-DYNA软件建立了拖带船队和钢围堰填土防撞墩的有限元计算模型,模拟计算了拖船与防撞墩之间的撞击作用,得到了撞击力和撞击能量时间历程的合理规律,可供运河桥墩的防撞设施设计参考。

Towing fleet are one of the main ship types in the the Grand Canal,where collision accidents between ships and canal bridges often occur. For discussing the role of pulling mule-fleet impact on the canal bridge pier and in order to better design the anti-collision facilities of the canal bridge piers,finite element models of pulling mule-fleet and anti-collision pier of steel cofferdam was set up based on ANSYS/LS-DYNA Software. The simulate calculation of impact effect between pulling mule-fleet and anti-collision pier was carried out. And the time course laws of both percussive-force variation and percussive-energy variation was analyzed,which may be taken as references for the engineer design of anti-collision facilities.