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传统的跨越管道安装主要采用钢结构滚动支座,不仅造价高,工期长,而且维护成本高。为了有效规避钢结构滚动支座的不足,针对中石油江苏LNG外输跨海管道安装的特点,设计研发了滑动支座、固定墩、固定支座、管道支托和方形补偿器。介绍了管道支座的整体布置,以及管道支座的4个组成部分:固定墩、固定支座、管道支托和聚乙烯高性能滑动支座的设计情况,对补偿器进行了选型和补偿计算。实践表明:补偿器可以有效地对管道的热伸长进行补偿,管道支座技术可行,造价低,易实现,易维护,可为其他大跨度架空管道的安装提供参考。
The traditional cross-pipe installation mainly adopts steel rolling support, which not only has high cost, long construction period, but also high maintenance cost. In order to effectively avoid the shortcomings of the rolling bearing of steel structure, aiming at the characteristics of CNG Jiangsu LNG trans-oceanic pipeline installation, a sliding bearing, a fixed pier, a fixed bearing, a pipe support and a square compensator were designed and developed. The overall layout of the pipe support and the four components of the pipe support are introduced. The design of the fixed pier, the fixed support, the pipe support and the polyethylene high performance sliding support are introduced. The compensator is selected and compensated Calculate. The practice shows that the compensator can effectively compensate for the thermal expansion of the pipeline. The pipeline bearing technology is feasible, low in cost, easy to implement and easy to maintain, which can provide reference for the installation of other long-span overhead pipes.