外海钢壳沉管隧道接头防腐施工技术研究与应用  

Research and application of anti-corrosion construction technology for joints of steel shell immersed tube tunnel in open seas

作　　者：高衡 周相荣 宁进进 董辉 陈一尤 GAO Heng;ZHOU Xiang-rong;NING Jin-jin;DONG Hui;CHEN Yi-you(No.2 Engineering Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Qingdao,Shandong 266071,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China)

机构地区：[1]中交一航局第二工程有限公司,山东青岛266071 [2]中交第一航务工程局有限公司,天津300461

出　　处：《中国港湾建设》2024年第7期76-81,共6页China Harbour Engineering

摘　　要：深中通道于国内首次大规模采用了钢壳混凝土形式沉管,其施工工艺、质量控制重点不同于传统钢筋混凝土沉管,在海洋环境影响下,钢壳的防腐施工是保证钢壳沉管主体耐久性的关键之一。沉管前后端因施工过程中多种影响因素限制,沉管内部对接处的前后4 m范围为沉管防腐涂层易损区域,为保障沉管的防腐性能,需于沉管内相关前置工序完成后进行二次修复补涂。较陆地厂内涂装,二次涂装面临着高温高湿以及施工频繁交叉的作业环境,针对上述条件,在厂内防腐施工基础上改进了施工工艺及施工机具的配合方式,经现场实践证明,施工质量及效率均取得良好成效。The Shenzhen-Zhongshan Link is the first large-scale use of steel shell concrete immersed tube in China,its construction technology and quality control focus are different from the traditional reinforced concrete immersed tube.Under the influence of marine environment,the anti-corrosion construction of steel shell is one of the key to ensure the durability of the main body of steel shell immersed tube.Due to the limitations of various influencing factors in the construction process on the front and rear ends of the immersed tube,the range of 4 m before and after the internal docking of the immersed tube is the vulnerable area of the anti-corrosion coating of the immersed tube.To ensure the anti-corrosion performance of the immersed tube,secondary repair and repainting should be carried out after the completion of relevant pre-processing inside the immersed tube.Compared to on-site painting,secondary painting faces high temperature,high humidity,and frequent cross construction environments.In view of the above conditions,the construction technology and the coordination of construction equipment and tools have been improved on the basis of anti-corrosion construction in the factory,and the construction quality and efficiency have achieved good results through on-site practice.

关 键 词：深中通道 钢壳沉管 沉管接头 新型平台 外海工程涂装防腐 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程]