45000t集装箱滚装船超大型艉门安装技术研究

45000t集装箱滚装船艉门是艉部大开口密封设备，由艉门主体和滚装翼板组成，艉门主体对整个滚装区域与外部空间进行水密分隔，滚装翼板作为艉跳板与滚装通道衔接。滚装翼板在工作状态下搭在艉跳板上，保证车辆顺利进入滚装货舱；通道关闭时，先收拢滚装翼板，再关闭艉门，确保艉门周围的水密结构正常，保证通道的水密性。主要对艉门主体、滚装翼板及其相关部件的安装进行研究，阐述艉门主体、滚装翼板的前期安装准备和过程控制，以及艉门安装过程中相关安装精度的控制，以确保艉门安装的准确性和可靠性，进而达到预期的设计要求，为后续系列船的艉门安装提供参考。

Research on the Installation of Super Large Stern Door of 45000t Con-Ro Ship

The stern door is a watertight device for the large stern opening of the 45000t Con-Ro ship. It consists of the main body and the ro/ro flap which are actuated by the hydro-cylinder with the mode of top lift-up opening. The main body functions as the watertight boundary between the ro/ro cargo space and the external space, while the ro/ro flap functions as the connection between stern ramp and the ro/ro passage way. Under working condition, the ro/ro flap is attached to the stern ramp to ensure that the cars enter the cargo space without hindrance. When the passage way is to be closed, the ro/ro flap is retrieved before the stern door is closed, which makes the surrounding structures recuperated to the normal condition and the passage way kept watertight. This paper mainly studies the installation of the main body, the ro/ro flap and its components, as well as their pre-installation preparations and process control together with the precision control of the stern door in both opening and closing process. The purpose is to achieve the required installation accuracy and reliability which meet the anticipated design requirements, and to provide reference for the stern door installation of the subsequent ships.