摘要
为了研究寒区埋地输油管道的管道应变与保温层应变的关系,将热缩管封装在PVC管外表面建立带保温层的管道模型,在PVC管和热缩管的外表面分别布设8个光纤光栅传感器,并在管道模型上施加集中荷载开展管道变形监测试验.试验结果表明:同一荷载作用下,光纤光栅传感器测试得到的PVC管道的应变要大于热缩管上的应变,热缩管上应变到PVC管上的应变传递系数为1.40.实际工程测试中,具有良好弹性的保温层管道可以通过在保温层表面布设传感器开展变形监测.
The heat-shrinkable tube was encapsulated on the outer surface of PVC pipe to establish one pipeline model with insulation layer to study the strain relationship between pipeline and insulation of the buried oil pipeline in cold region.Eight fiber Bragg grating(FBG)sensors were installed on the outer surface of PVC pipe and heat-shrinkable tube respectively,and the pipeline deformation monitoring test was carried out by applying concentrated load on the pipeline model.The test results show that the strain of the PVC pipe measured by the FBG sensors is greater than that of the heat-shrinkable tube under the same load,the strain transfer coefficient from heat-shrinkable tube to PVC pipe is about 1.40.In the field test,the insulation pipeline with good elasticity can be monitored by placing sensors on the surface of the insulation layer.
作者
李昌航
何欣
张黎
张世海
何建平
LI Changhang;HE Xin;ZHANG Li;ZHANG Shihai;HE Jianping(School of Civil Engineering,Dalian University of Technology,Dalian 116024,China;Nanchang Management Office,West-to-East Gas Transmission Branch,CNPC,Nanchang 330000,China;School of Civil Engineering,Nanyang Institute of Technology,Nanyang 473001,China)
出处
《昆明理工大学学报（自然科学版）》
CAS
北大核心
2020年第4期115-119,共5页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金面上项目(61675102)
中央高校基本科研业务费项目(DUT20LAB140)
关键词
管道
保温层
变形监测
光纤光栅
pipeline
insulation layer
deformation monitoring
fiber bragg grating
