港池开挖对高桩梁板码头影响的数值分析

Numerical Analysis of the Impact of Harbor Basin Excavation of High-Piled Beam Plate Wharf

摘要: 通过高桩梁板码头结构数值模拟与分析，探讨了开挖过程中土体卸荷对高桩码头群桩的影响。使用PLAXIS-3D有限元软件构建了三维模型，考虑了地基土层、开挖工况、桩基布置方式的影响并通过模拟分析了不同阶段的桩基结构弯矩、位移等关键参数。研究表明：发现随着开挖深度增加，桩身水平位移和沉降量增加，并与开挖深度呈线性关系。同时，开挖过程会导致码头桩基产生明显弯矩，呈现“弓”字形变化。

Abstract: Through numerical simulation and analysis of high-piled wharf structures, the influence of soil unloading during excavation on the piles of high-piled wharves was investigated. A three-dimensional model was constructed using PLAXIS-3D finite element software, considering the effects of foundation soil layers, excavation processes, and pile layout methods. Key parameters such as bending moment and displacement of pile foundations at different stages were analyzed through simulation. The study revealed that with increasing excavation depth, horizontal displacement and settlement of the piles increased linearly. Additionally, excavation processes led to significant bending moments in the wharf piles, exhibiting a “bow” shaped variation.