论文部分内容阅读
广坪河梁式跨越为兰成原油管道工程与中贵天然气管道工程共用,采用卷扬机牵引预制管道、空中发送的方式完成跨越管道的就位。介绍了该施工技术的特点,探讨了其施工操作要点,包括卷扬机基础的精度控制、卷扬机的操作控制、跨越管段的控制、吊车的选型、保温作业的安全保障。主要工序包括施工准备、脚手架的安装、管道支座的安装、卷扬机的安装、跨越管段的预制、跨越管段的空中发送、补偿段热煨弯管的安装、固定墩的安装、管垫的安装、保温层的安装、试压与干燥。该技术减少了高空作业量,降低了高空作业的不利因素,避免了脚手架平台的重复搭建,最大限度地保障了操作人员安全,降低了施工成本,值得推广应用。
Guangping river beam span for the Lancheng crude oil pipeline project and the expensive natural gas pipeline project share the use of windlass traction prefabricated pipelines, air way to complete the cross over the pipeline in place. The characteristics of the construction technology are introduced. The key points of the construction operation are discussed, including the precision control of the hoist, the operation control of the hoist, the control over the pipe section, the selection of the crane, and the security of the insulation work. The main processes include construction preparation, installation of scaffolds, installation of pipe supports, installation of winches, prefabrication of cross-over pipe sections, over-the-air transmission over pipe sections, installation of compensation elbows, installation of fixed piers, Insulation installation, pressure test and drying. The technology reduces the workload of aerial work, reduces the unfavorable factors of aerial work, avoids the repeated construction of the scaffolding platform, maximizes the safety of the operator, reduces the construction cost, and is worth popularizing and applying.