It is possible for ship to happen lateral collision to bridge pier,when crossing waterway, drifting out of control,avoiding frontal crash and so on. Because of the bigger added water mass of hull,as well as the larger contact area between broadside and pier,lateral collision is so harmful that is not allowed to be neglectable. Based on the large bridge engineering for river-crossing, the lateral collision between cargo hold of 3000 DWT tanker at the speed of 3. 0 m/s and bridge pier is simulated by the nonlinear finite element analysis software MSC. Dytran. The impact force and the evolution process of energy can be analyzed under the condition of different eccentric distance. Simulation results show that the value of lateral collision force is not less than bow frontal collision force under the same conditions. Moreover,it is recommended that the initial lateral impact force should be controlled in the context of adequate security conditions. By means of the additional protective devices of bridge pier, it's able to achieve this goal.%当船舶横穿水道、失控漂移或者船舶规避正面碰撞等情况下,船舶将有可能与桥墩发生侧撞.由于侧撞时船体附连水质量较大,舷侧与桥墩接触面积也很大,故其对桥梁的撞击危害是不容忽视的.本文以某大型跨江桥梁工程为背景,应用非线性有限元软件MSC.Dytran,选取3000DWT油船在3.0 m/s的失控速度下,船舶货舱区侧撞桥梁墩身的有限元仿真试验,并且分析了不同偏心距条件下撞击力和能量的演变过程.仿真试验表明,在同等条件下船舶侧撞的危害不亚于船首正撞.同时,建议将初始侧撞击力控制在足够安全的范围内,而通过增设桥墩的防撞保护装置能实现这一目标.
展开▼
