45000t集装箱滚装船超高导轨架精度控制

45000t集装箱滚装船的货舱区采用特殊的无绑扎、无舱盖设计，并使用最长约30m的超高导轨架结构对集装箱进行装载限位。为顺利安装超高导轨架并满足相关规范的要求，对传统的安装工艺及精度控制进行对比分析，根据超高导轨架特殊的结构形式及相关用途，重新梳理一套安装流程，分阶段加强精度控制。介绍该类型船所采用的超高导轨架的结构形式特点，对导轨架安装难点和精度策划思路进行详细阐述，给出导轨架分段预装工艺，详细描述超高导轨安装时各阶段的精度控制要点。通过吊箱试验验证该策划方案的可行性，结果表明，其在保证生产效率的同时能有效保证超高导轨架的建造精度，可为后续产品提高施工质量及施工效率提供参考。

Precision Control Technique for Ultra-High Guide Frame onboard 45000t Con-Ro Ship

The 45000t Con-Ro ship is specially designed without lashing and hatch cover, but there is an ultra-high guide frame in a maximum length of 30m to keep the position of containers. In order to make the ultra-high guide frame installed precisely and in compliance with the rules and regulations, the traditional installation technique and precision control are compared and analyzed according to the special structure and function of the ultra-high guide frame, and new installation procedures are proposed to enhance the precision control at different stages. This paper introduces the structure characteristics of ultra-high guide frame for the type of ship, elaborates the difficulties and the precision planning of the installation, explains the pre-assembly technique of the block, and describes in detail the key points of precision control at different stages of the installation. The procedures are validated feasible in the container lifting test and the result shows that the proposed method can effectively guarantee the construction precision of the ultra-high guide frame without losing production efficiency. The study could provide reference for the subsequent products which need to improve construction quality and efficiency.