海上桩基固定式石油平台是我国海洋石油生产的主要结构形式。目前，张紧式外加电流阴极保护技术已成为海上桩基固定式导管架平台阴极保护的主要技术手段。新建导管架平台均采用陆地安装张紧式复合缆-电极系统的方式，但面对338m导管架的设计高度，要在其卧式建造过程中安装长约340m、重约3.5t的复合缆，挑战巨大且无相关研究成果和行业经验可供借鉴。为了解决这个难题，研究引入了静态滑索复合缆安装法安装试验，基于力学计算及三维仿真、视频监测及实现对复合缆实际过程的动态监测，并将实际监测数据与理论计算数据、现场试验测试数据进行综合对比，重点研究复合缆安装过程中钢丝绳滑索及牵引钢丝绳的受力状态、复合缆局部挠度与整体挠度、安装过程中复合缆运动姿态的变化规律，验证深水卧式导管架外加电流阴极保护（ICCP）复合缆滑索式安装方案的可行性。

Offshore pile foundation fixed oil platforms are the main structural form of offshore oil production in China. At present， the tension type external current cathodic protection technology has become the main technical means of cathodic protection for offshore pile foundation fixed jacket platforms. The newly built jacket platform adopts the method of installing a tensioned composite cable electrode system on land， but facing the design height of 338 meters of jacket， it is a huge challenge to install a composite cable about 340 meters long and weighing about 3.5 tons during its horizontal construction process， and there are no relevant research results or industry experience to draw on. In order to solve this problem， this article proposes a static sliding cable composite cable installation method for installation testing. Based on mechanical calculations and 3D simulation， video monitoring， and dynamic monitoring of the actual process of the composite cable， the actual monitoring data is comprehensively compared with theoretical calculation data and onsite test data. The focus is on studying the stress state of the steel wire rope sliding cable and traction steel wire rope during the installation process of the composite cable， the local deflection and overall deflection of the composite cable， and the change law of the composite cable motion posture during the installation process， to verify the feasibility of the impressed current cathodic protection （ICCP） composite cable sliding cable installation scheme for deepwater horizontal jackets.