基于ABAQUS的斜桩-重力式结构靠泊撞击力

通过有限元软件ABAQUS对船舶靠泊撞击作用下的斜桩-重力式结构进行动、静力响应研究,对比结构响应的异同,得到了靠泊撞击力作用下结构的位移放大效应,并探讨不同有效撞击能量下的放大效应变化规律。研究表明,相同有效撞击能量作用下的复合结构撞击力动力放大系数也相同;在进行斜桩-重力式结构设计时,当船舶有效撞击能量大于1 350.4 k J时,靠泊撞击力分项系数按规范取1.5偏小;当设计船型为30万吨级油船时,推荐靠泊撞击力分项系数取2.12。

Berthing impact force applied to inclined pile-gravity structure by ABAQUS

The paper carries out the static and dynamic analysis of the inclined pile-gravity structure under the action of berthing impact force by ABAQUS.By comparing the dynamic displacements with the static displacements of the inclined pile-gravity structure,the dynamic amplification factor of the impact force is get.The amplification effect changing rule of different effective impact energy is discussed.The results show that the dynamic amplification coefficients of the composite structures under the same effective impact energy are the same.In the design of inclined pile-gravity structure,when the ships effective impact energy is greater than 1 350.4 kJ,the coefficient of the berthing impact force is 1.5 according to the standard,which is small;when the design vessel type is 300 thousand DWT,it is recommended to take 2.12.