大型模块建造多采取分片预制、整体总装的建造形式，整体结构复杂、尺寸大，尺寸控制节点多，附属管线对接处尺寸公差要求严格。以海洋石油工程青岛场地承建的Ichthys液化天然气（LNG）陆地终端项目为例，对结构分片进行尺寸控制，并标记甲板中心点，为总装阶段建立三维坐标控制网。基于坐标控制网与甲板中心点对结构片进行总装尺寸定位，并对管线对接处尺寸进行控制，有效控制了误差积累，保证了模块总装尺寸精度，为大型模块尺寸控制提供了可供借鉴的经验。
For large-scale ocean engineering modules, the construction method is usually pre-fabricating in pieces and field-assembling on site. About the dimensional control, there are more control points for the structure and stricter tolerance for attached pipe docking because of the complicated structure and huge overall size. Taking Ichthys liquefied natural gas (LNG) land terminal project which was built on COOEC Qingdao yard as an example, dimensional control is applied to structure pieces and the best-fit center line is marked on them in the pre-fabrication process. Three-dimensional coordinate system control network is established on the final assembly site. According to the system, the positioning and dimensional control of structure pieces, as well as those of the pipe docking, are achieved using the best-fit center line. The three-dimensional coordinate system can effectively ensure the accuracy of the module in the field-assembly process and control the error accumulation, which provides experiences for the dimensional control of large-scale modules in the future.
1 张志宽. 大型导管架三维坐标控制网尺寸控制技术初步分析[J]. 中国造船, 2012, 53(增2): 86.
Zhang Zhi-kuan. Preliminary analysis of huge jacket dimension control technology using three-dimensional coordinates control net [J]. Shipbuilding of China, 2012, 53(S2): 86.
2 杨现阳, 王亚男, 荆鹏, 等. 超大型海洋平台建造尺寸控制工艺探讨[J]. 中国造船, 2014, 55(增1): 340.
Yang Xian-yang, Wang Ya-nan, Jing Peng, et al. Dimension control technology for fabrication of super platform [J]. Shipbuilding of China, 2014, 55(S1): 340.
3 孙云虎, 李海峰, 荆鹏. 深水导管架尺寸控制工艺探讨[J]. 中国造船, 2013, 54(增2): 144.
Sun Yun-hu, Li Hai-feng, Jing Peng. The study on dimensional control procedure for deep water jacket [J]. Shipbuilding of China, 2013, 54(S2): 144.
4 孙丕松, 李凡, 潘庆敏. 大型LNG模块一体化联合建造计划研究[J]. 中国石油和化工标准与质量, 2017, 37(4): 25.
Sun Pi-song, Li Fan, Pan Qing-min. Research on the integration construction planning of large-scale LNG modules [J]. China Petroleum and Chemical Standards and Quality, 2017, 37(4): 25.
5 刘荣坤, 李家军, 田从永, 等. LNG钢结构模块沉降分析及修正研究[J]. 海洋工程装备与技术, 2017, 4(4): 240.
Liu Rong-kun, Li Jia-jun, Tian Cong-yong, et al. Research on module settlement and adjustment of LNG steel project [J]. Ocean Engineering Equipment and Technology, 2017, 4(4): 240.
