重力式码头抛石基床内部滑移破坏研究

Study of slipping in the rubble-bedding of gravity quays

摘要: 研究讨论了重力式码头厚抛石基床内部水平滑移破坏问题,并提出了一套简化的计算分析方法。利用原规范中的计算方法和考虑基床后方土压力的计算方法计算分析了重力式码头厚抛石基床的内部滑移破坏情况,并将两种方法所得的结果与采用Plaxis弹塑性有限元数值分析结果相比较,结果表明:考虑基床后方土压力的新计算方法所得结果与Plaxis分析结果吻合较好,同时研究显示在抛石基床内部存在着潜在的滑移破坏面,该破坏面的位置与码头结构的高度和宽度、后方荷载和土体的参数有关。

Abstract: Horizontal slipping in the deep rubble-bedding of gravity quays was studied and a simplified method was put forward.The slipping was respectively analyzed by use of the method of original standand and the method considering the earth pressure on back of the rubble-bedding.The results of the two methods were compared with those of the elastic-plastic FEM called Plaxis.It was indicated that the result of the method considering the earth pressure on back of the rubble-bedding was coincident with that of Plaxis.There was a potential slipping plane in the rubble-bedding and its position was related to the height and width of the structure,load and parameters of the soil.