纳入大直径热力管的综合管廊设计研究
- Title:
- Research on Design of Utility Tunnel Integrating Large-diameter Thermal Pipes
- 关键词:
- font-size: 10pt; ">综合管廊; 大直径热力管; 总体设计; 节点设计
- 摘要:
-
以北方某城市综合管廊工程为背景，介绍非蒸汽大直径热力管入廊需要解决的几个重要问题。在管廊的断面设计中，应结合规划部门要求、管廊周边环境以及入廊管线种类综合考虑热力管线的布置形式。在管廊的平纵设计中，应尽量避免在管廊内出现竖向和水平向转角，如果管廊主体结构需要在同一处的水平和竖向上设置转角，管廊主体在水平方向上的转角应和竖向上转角错开。在管廊节点设计中，管廊接出口位置应结合规划和地块管线需求进行布置，且接出口的分支长度和预留的洞口间距应考虑管道和管道节点的安装要求；综合管廊内还可通过设置热力管专属接出口方便大直径主干热力管的接入和接出；管廊节点处局部外凸的位置应设置在热力管的另一侧。在管廊的土建设计中，当管廊内需设置分段阀门时，应在管廊内预留出分段阀门的安装空间；由于大直径热力管线支架的预埋件结构形式复杂，截面尺寸较大，建议在浇筑管廊主体结构时，同步进行支架预埋件施工。
- Abstract:
-
Based on a practical project of the utility tunnel in a city in the north of China, some important problems in the process of the non-steam large-diameter thermal pipe entering the utility tunnel were introduced. It was pointed out that in the section design of the utility tunnel, the arrangement of largediameter thermal pipe in utility tunnel should be combined with the planning authority requirements, utility tunnel surrounding environment, and the pipeline types. In the horizontal and vertical pipe utility design, the angle should not appear in horizontal and vertical sections. If there is angle on horizontal and vertical sections at the same place in the main structure of the utility tunnel, the angle on the horizontal direction should stagger with the vertical angle. In the design of exclusive junctions of tunnel utility, the installation requirements of pipes and pipe joints should be considered, the branch length and reserved hole of the junction set based on the installation requirement of pipeline; the exclusive junction should be set up to facilitate the access and output of thermal pipe; the local protruding position inutility tunnel should be arranged on the other side of the thermal pipe. In the installation design of the utility tunnel, if sectional valves were installed in the utility tunnel, space should be reserved for installation of sectional valves; and it was suggested to simultaneously carry out the embedded parts of the support when the main structure of the utility tunnel were constructed.
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