软土地基上板桩码头结构方案研究

以某软土地基上的板桩码头工程为例，采用地下连续墙作前墙、混凝土梁连接前后桩基的设计方案。考虑到软土地基的材料非线性，地基土体采用邓肯-张模型，并使用有限单元法分析板桩码头各构件的应力分布规律和变形特点。另外，采用多种方案对比的方法对码头结构设计方案中的前墙入土深度和两排PHC桩基的桩长进行研究。分析前墙入土深度和PHC桩长对板桩码头位移和内力的影响，并给出前墙入土深度和PHC桩长的优化结果，为工程实践中板桩码头的结构优化设计提供依据。

Structural scheme of sheet pile wharf on soft soil foundation

Taking the sheet pile wharf project on soft soil foundation for example,we propose the sheet pile wharf design scheme using underground continuous wall as the front wall and concrete beams to connect the front and rear as a whole is proposed.Considering the material nonlinearity of the soft soil foundation,foundation soil adopts Duncan-Chang model.The sheet pile wharf stress distribution and deformation characteristics are analyzed by the finite element method.Moreover,front wall buried depth and the length of prestressed high strength concrete pile belonging to structure design scheme of the sheet pile wharf is researched.Different front wall buried depth and prestressed high strength concrete pile length can impact the sheet pile wharf stress and displacement.By analyzing the impact,the optimization result of front wall buried depth and prestressed high strength concrete pile length can be decided.Those results provide the basis of sheet pile wharf structure optimization in engineering practice.