复合材料增强管线钢管的预应力处理及水压试验
发布时间：2018-09-17 18:32
【摘要】：天然气需求量不断增加对长输管道的承压能力提出了更高的要求,而增加管道壁厚和提高钢级均有一定的局限性,因此开发了复合材料增强管线钢管,即通过在钢管外表面缠绕连续纤维复合材料的方法,提高管道的承压能力。以外径508 mm的管线钢管为基础,制成了复合材料增强管线钢管样管,使用预应力法处理管材,并对处理后的管材进行了水压爆破试验分析。结果表明:复合材料增强管线钢管的承压能力是钢层和复合材料层承载叠加的结果;预应力处理对结构层的应力分布进行了重新分配,提高了复合材料层的承载比例;当管道失效时,复合材料层首先被破坏。在试验结果的基础上,对目前使用的复合材料增强管线钢管设计压力计算方法进行了修正。
[Abstract]:The increasing demand for natural gas has put forward higher requirements for the pressure bearing capacity of long distance pipeline, but increasing the wall thickness of pipeline and raising steel grade have some limitations, so the composite material reinforced pipeline steel pipe has been developed. In other words, the pressure bearing capacity of the pipe is improved by winding the continuous fiber composite material on the outer surface of the pipe. Based on the pipe with the outer diameter of 508 mm, the composite reinforced pipe is made. The pipe is treated by prestressing method, and the treated pipe is analyzed by water pressure blasting test. The results show that the bearing capacity of the composite reinforced pipeline steel pipe is the result of the superposition of the steel layer and the composite layer, the stress distribution of the structure layer is redistributed by prestress treatment, and the bearing ratio of the composite layer is increased. When the pipe fails, the composite layer is first destroyed. Based on the experimental results, the design pressure calculation method of composite reinforced pipeline pipe is modified.
【作者单位】： 中国石油集团石油管工程技术研究院/石油管材及装备材料服役行为与结构安全国家重点实验室;
【基金】：中国石油天然气集团公司科学研究与技术开发项目“复合材料增强管线钢管及非金属管道超前储备研究”,2014B-3312
【分类号】：TE973
本文编号：2246758
[Abstract]:The increasing demand for natural gas has put forward higher requirements for the pressure bearing capacity of long distance pipeline, but increasing the wall thickness of pipeline and raising steel grade have some limitations, so the composite material reinforced pipeline steel pipe has been developed. In other words, the pressure bearing capacity of the pipe is improved by winding the continuous fiber composite material on the outer surface of the pipe. Based on the pipe with the outer diameter of 508 mm, the composite reinforced pipe is made. The pipe is treated by prestressing method, and the treated pipe is analyzed by water pressure blasting test. The results show that the bearing capacity of the composite reinforced pipeline steel pipe is the result of the superposition of the steel layer and the composite layer, the stress distribution of the structure layer is redistributed by prestress treatment, and the bearing ratio of the composite layer is increased. When the pipe fails, the composite layer is first destroyed. Based on the experimental results, the design pressure calculation method of composite reinforced pipeline pipe is modified.
【作者单位】： 中国石油集团石油管工程技术研究院/石油管材及装备材料服役行为与结构安全国家重点实验室;
【基金】：中国石油天然气集团公司科学研究与技术开发项目“复合材料增强管线钢管及非金属管道超前储备研究”,2014B-3312
【分类号】：TE973
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