中国海洋大学学报（自然科学版）2024，Vol.54Issue(9)：141-147,7.DOI:10.16441/j.cnki.hdxb.20230191
静压群桩挤土效应对邻近既有码头桩基影响数值分析
Numerical Analysis of the Influence of Static Pressure Pile Group Squeezing Effect on Pile Foundation of Adjacent Existing Wharf
摘要
Abstract
In order to investigate the adverse effects of static pressure pile groups on surrounding build-ings and structures in soft soil areas,based on a photovoltaic power generation project in Zhejiang prov-ince as an example,the cylindrical cavity expansion method is used to simulate the effect of pile driving,and the hardening soil(HS)constitutive model is used for the soil to establish a three-dimensional finite element model of pile-soil and pile-pile interaction.The influences of piling sequence and compacting effect on the adjacent existing pier foundation are analyzed.The results show that the maximum de-formation of the adjacent existing pile foundation is 6.09 mm when piling sequence and compacting effect are ignored,and the pier pile foundation is in an elastic state.After considering the piling se-quence and compacting effect,the soil displacement on the left side of the pile group is reduced.The de-formation and internal force of existing piles are easily affected by factors such as the pile sinking se-quence and the relative position of the pile sinking,which should pay sufficient attention in engineering design and construction.It is recommended that the pile sinking sequence be sequential pile pressing without changing the direction row by row in this project.关键词
静压沉桩/圆孔扩张法/硬化土模型/沉桩顺序/遮拦效应Key words
jacked group pile/cylindrical cavity expansion method/hardening soil model/piling se-quence/compacting effect分类
建筑与水利引用本文复制引用
杜文博,谢伟,王滨,倪卫达,沈侃敏,高广运..静压群桩挤土效应对邻近既有码头桩基影响数值分析[J].中国海洋大学学报（自然科学版）,2024,54(9):141-147,7.基金项目
国家自然科学基金项目(42277130)资助 Supported by the National Natural Science Foundation of China(42277130) （42277130）
