多级重力式码头最不利失效模式分析

On worst failure mode for multi-stage gravity quay

通过将上一级码头的竖向地基应力和横向摩擦力视为一种超载,并转化为土压力作用在下一级码头上,运用可靠度方法,结合纳溪沟码头工程实例分析多级重力式码头的最不利工况组合及最不利失效模式。结果表明:多级重力式码头的各种作用组合中,水位与多级重力式码头的上、下级码头墙身等高时的抗滑稳定性可靠度最低,即为控制工况。

The vertical foundation stress and horizontal friction of the higher level wharf is taken as an overload, which is converted into the earth pressure and acting on the lower level wharf. Based on the reliability theory and combining with the project example of Naxigou wharf, we analyze the most disadvantageous condition combination and the worst failure mode of the multi-stage gravity wharf. The results show that the anti-sliding stability has a minimum reliability when water-level is the same as the height of the junior and the greater wharf among various kinds of function combinations, which is the controlling condition.