LIMeng,CHENJiang-zhou,LINSi-xiang,et al.Structural Protection and Construction Design for Relocation and Renovation of Raw Water Pipelines under Unique Conditions[J].China Water & Wastewater,2024,40(14):57-62.
Structural Protection and Construction Design for Relocation and Renovation of Raw Water Pipelines under Unique Conditions
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第14期
Page:
57-62
Column:
Date of publication:
2024-07-17
- Keywords:
- raw water pipeline; relocation engineering; structural protection; construction design; scheme comparison and selection
- Abstract:
- Due to the requirements of urban expansion and infrastructure upgrading, the relocation of a large diameter raw water pipeline needs to be completed in a short period of time. Considering the special conditions such as ensuring uninterrupted water supply for pipelines during relocation and renovation, the design should focus on comparing structural protection schemes and construction techniques. This paper thoroughly discussed the technical and economic feasibility of five structural protection schemes for the pipeline: directly buried pipeline, inner circular steel casing protection, inner circular concrete half-wrapped protection, full concentric round steel casing protection, and reinforced concrete casing protection. Additionally, two design schemes for wall piers at the connection points were also examined in detail. The scheme of reinforced concrete casing protection offered comprehensive advantages in terms of construction period, construction technology, and meeting the requirements of relocation engineering. The pre-cast reinforced concrete wall pier served as a temporary drag pier at the pipeline connection turning point, effectively reducing the connection time. In addition, the construction technology for the crossing section, protection point, and connection point was designed and implemented in advance to ensure the swift relocation and connection of the raw water pipeline, thereby guaranteeing access to clean water for people’s livelihood.
Last Update:
2024-07-17