坞墙组合钢板桩锈蚀损伤应力分析  

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

作　　者：田吟雪 金国龙[1] 王勇[1] 李华梅[1] 周东荣[2] 戴青 朱小东[2] 唐继蔚 TIAN Yinxue;JIN Guolong;WANG Yong;LI Huamei;ZHOU Dongrong;DAI Qing;ZHU Xiaodong;TANG Jiwei(China Shipbuilding NDRI Engineering Co.,Ltd.,Shanghai 200063,China;Shanghai Salvage of the Ministry of Transport,Shanghai 200090,China)

机构地区：[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

出　　处：《上海交通大学学报》2023年第S01期87-93,共7页Journal of Shanghai Jiaotong University

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.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.

关 键 词：组合钢板桩 锈蚀损伤 应力验算 

分 类 号：TU9[建筑科学]