上海交通大学学报

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (S1): 87-93.doi: 10.16183/j.cnki.jsjtu.2023.S1.11

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坞墙组合钢板桩锈蚀损伤应力分析

田吟雪1(), 金国龙1, 王勇1, 李华梅1, 周东荣2, 戴青2, 朱小东2, 唐继蔚2   

  1. 1.中船第九设计研究院工程有限公司,上海 200063
    2.交通运输部上海打捞局,上海200090
  • 收稿日期:2023-06-07 修回日期:2022-07-25 接受日期:2022-08-22 出版日期:2023-10-27 发布日期:2023-11-10
  • 作者简介:田吟雪(1994-),工程师,从事岩土及水运工程研究.E-mail:tianyx1226@163.com.

Analysis of Corrosion Damage Stress of Composite Steel Sheet Pile for Dock Wall

TIAN Yinxue1(), JIN Guolong1, WANG Yong1, LI Huamei1, ZHOU Dongrong2, DAI Qing2, ZHU Xiaodong2, TANG Jiwei2   

  1. 1. China Shipbuilding NDRI Engineering Co., Ltd., Shanghai 200063, China
    2. Shanghai Salvage of the Ministry of Transport, Shanghai 200090, China
  • Received:2023-06-07 Revised:2022-07-25 Accepted:2022-08-22 Online:2023-10-27 Published:2023-11-10

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摘要：

原上海船厂1#船坞在船厂搬迁后年久失修,组合钢板桩坞墙结构出现一定程度的锈蚀损伤,墙后减压排水设施失效.为探究锈蚀后的组合钢板桩坞墙在近期古船进坞及后续博物院建设中的承载性能,分别建立船坞与钢板桩坞墙的数值模型,得到其位移、内力,以及锈蚀区局部应力,得出以下结论:①组合钢板桩暂处于强度安全状态,短期内可承受古船进坞产生的荷载;②随着钢板桩锈蚀程度的发展,当锈坑深度达到4.6 mm时,钢板桩将难以满足承载力要求;③建议在锈蚀检测后的7年内补强修复钢板桩,重新建立防锈体系,以保证后续工程建设时船坞结构的安全.

关键词: 组合钢板桩, 锈蚀损伤, 应力验算

Abstract:

Dry Dock No. 1 of Shanghai Shipyard has been in disrepair after the relocation of the shipyard. The composite-steel-sheet-pile dock walls have been corroded to a certain extent, and the under-drained system behind the wall failed. In order to explore the bearing performance of the corroded composite steel sheet pile dock wall during the recent docking of ancient ships and the subsequent construction of the museum, numerical models of the dock and steel sheet pile dock wall were established, and their displacements, internal forces, and local stresses in the corroded area were obtained. It is concluded that the composite steel sheet pile is temporarily in the strength safety state, and can withstand the load generated by the ancient ship docking in the short term. When the depth of rust pits reaches 4.6 mm, it will be difficult for steel sheet piles to meet the bearing capacity requirements. It is suggested that steel sheet piles should be reinforced and repaired within 7 years after rust detection, and the rust prevention system should be re-established to ensure the safety of the dock structure during subsequent engineering construction.

Key words: composite steel sheet pile, corrosion damage, stress calculation

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