肘板焊接结构光纤监测技术研究  

Research on optical fiber monitoring technology of elbow plate welding structure

作　　者：康永田 万波[1] 李民刚 周然 肖文生[3] 李阳 KANG Yongtian;WAN Bo;LI Mingang;ZHOU Ran;XIAO Wensheng;LI Yang(CCS Offshore Engineering Technology Center,Tianjin 300450,China;Qingdao DMAR Offshore Engineering Co.,Ltd.,Qingdao 266000,China;Department of Mechanics and Electrical,China University of Petroleum,Qingdao 266000,China;China Offshore Oil Research Centre,Beijing 100027,China)

机构地区：[1]中国船级社海洋工程技术中心,天津300450 [2]青岛迪玛尔海洋工程有限公司,山东青岛266000 [3]中国石油大学(华东),山东青岛266000 [4]中海石油研究总院有限公司,北京100027

出　　处：《石油工程建设》2021年第S02期210-214,共5页Petroleum Engineering Construction

基　　金：国家工信部高技术船舶科研项目“海洋油气装备关键设备测试认证技术体系研究”(CY05N20)专项。

摘　　要：深水浮式平台和船舶中的肘板结构通常是采用焊接工艺制造完成,连接肘板受到张力、风、浪、流等多种载荷的相互作用,极易发生损坏,所以连接肘板的结构应力状态需要重点关注。使用光纤监测技术研究连接肘板的结构应力,在连接肘板试验模型的垂直方向布置光纤传感器。对模型进行了有限元分析,并与试验监测数据进行对比,结果显示有限元分析结果与试验监测数据的误差在2.17%~4.39%之间,说明光纤监测技术在结构应力监测试验中有较高的监测精度,可在实际浮式平台工程项目做进一步的试验验证。The elbow structures in deepwater floating platforms and ships are usually manufactured using welding processes.The connecting elbow plates are interacted by various loads such as tension,wind,wave and current,and are easy to be damaged,so the connecting elbow plate structure need to be paid more attention to.In this paper,the optical fiber monitoring technology was applied to monitor the stress state of the elbow plate structure.The test model of the elbow plate structure was made and the optical fiber sensors were arranged in the vertical direction of the welding seam on the connecting elbow plate structure.A finite element analysis of the model is conducted and compared with the experimental monitoring data.The results show that the data error between the finite element analysis and the model test is 2.17%to 4.39%,the optical fiber monitoring technology has a high accuracy in the sturctural stress monitoring test,which can be further verified in the actual floating platform project.

关 键 词：肘板结构 光纤监测 有限元 试验研究 

分 类 号：TE95[石油与天然气工程—石油机械设备] TG44[金属学及工艺—焊接]