长距离曲线退管中内置中继间及钢绞线的应用

Application of Rear Relay Room and Steel Strand in Long Distance Curve Backpipe

摘要:

以上海市某排水提标改造工程为例，以国内顶管退管工程实例及现有设计、施工规范为基础，提出通过加装内置中继间、钢绞线分丝器及托架等装置，解决长距离曲线退管中反力提供和曲线段钢绞线布置的技术问题。退管工作的顺利实施，表明该方法在长距离退管中能提供可靠的回退反力，可为其他类似长距离曲线退管工程提供技术参考。

Abstract:

Taking a drainage upgrade project in Shanghai as an example, based on domestic pipe jacking and pipe withdrawal project instances and existing design and construction standards, this paper proposes the installation of devices such as built-in relay chambers, steel strand separators, and brackets to address the technical issues of providing reaction force and arranging steel strands in long-distance curved pipe withdrawal. The successful implementation of the pipe withdrawal work indicates that this method can provide reliable retraction reaction force in long-distance pipe withdrawal and serves as a reference for other similar long-distance curved pipe withdrawal projects.