钢板桩护岸结构数值模拟分析

The numerical analysis of steel sheet piles revetment structure

采用有限元计算软件ABAQUS对钢板桩航道护岸结构进行数值模拟分析与研究.通过大量的数值计算与分析,研究悬臂式钢板桩护岸结构不同插入比下岸坡土体的塑性变形以及桩的位移与内力,得出悬臂式钢板桩的最优插入比为1.05～1.27.在此基础上研究锚杆对悬臂式钢板桩护岸的加固效果,通过增设锚杆可改善护岸结构的变形与内力、约束岸坡土体的变形,并起到减小桩长的效果.在确定插入比的情况下研究锚杆位置与倾角对护岸的影响,通过对比岸坡土体塑性变形与结构的位移得出锚杆的最佳锚固位置为距离桩顶1.5 ～2 m,锚杆倾角对于钢板桩护岸结构的影响较小.

The general finite element software ABAQUS was utilized to analysis and study the steel sheet piles revetment structure. Through a lot of numerical analysis and study, this article researches the slope soil plastic deformation and the displacement and internal force of the pile for cantilever steel sheet pile revetment structure in the case of different insertion ratio. The results show that the optimal insertion ratio of steel sheet pile is 1.05 - 1.27. On this basis, this article researches bolt reinforce for cantilever sheet pile revetment. Adding bolt can improve revetment structure＇ s deibrmation and internal force, constraint slope soil deformation and aim to reducing the pile length. In the case of fixed insertion ratio, this article researches anchor＇ s position and inclination affect on revetment. Through comparing slope soil plastic deformation and structure displacement, it is concluded that the optimal anchor position is 1.5 - 2m from the top of pile, the influence of bolt inclination is small.