高桩码头适用于软土层较厚的地基，而软土地基的弹塑性变形与蠕变变形会引起结构安全问题。天津港某高桩码头后承台横梁出现的非对称破损，通过结构检测与变形观测分析，该损伤为非对称荷载和土体蠕变所致。文中采用Singh-Mitchell模型模拟土体蠕变，结合三维精细有限元理论，对非对称荷载下高桩码头变形与损伤进行计算分析。结果表明，该码头结构变形与损伤与检测结果一致。提出的数值分析方法可以较好地反映码头在非对称荷载和土体蠕变下的结构变形与损伤，为保证高桩码头的结构安全提供科学依据。%A piled wharf is a type of foundation suitable for thick soft soils, but the elastic-plastic deformation and creep of the soft soil may affect the structural safety. The asymmetric damage to the beams on the rear piled platform of a piled wharf in Tianjin Port was analyzed according to the results of structural testing and deformation observation, it was concluded that the asymmetrical loading and creep of soil mass had caused the damage. In this paper, the deformation and damage of the piled wharf under asymmetric loads was calculated and analyzed by the Singh-Mitchell Model to simulate the creep of soil and the 3D finite element method. The calculation results show that the structural deformation and damage to the piled wharf is consistent with the results of structure testing. The numerical analysis method in the paper may well reflect the structural deformation and damage to a piled wharf under the asymmetric loading and with the creep of soil, which provides scientific basis to ensure the structural safety of piled wharfs.
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