特殊条件下原水管道迁改的结构保护及施工设计  

Structural Protection and Construction Design for Relocation and Renovation of Raw Water Pipelines underUnique Conditions

作　　者：李猛 陈江舟 林斯香 谢富强 董斌 LI Meng;CHEN Jiang-zhou;LIN Si-xiang;XIE Fu-qiang;DONG Bin(Central&Southern China Municipal Engineering Design and Research Institute Co.Ltd.,Wuhan 430010,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉430010

出　　处：《中国给水排水》2024年第14期57-62,共6页China Water & Wastewater

摘　　要：由于城市扩建和基础设施升级,某大口径原水管道需在短时间内完成迁改。考虑到迁改中需确保管道不间断通水等特殊条件,设计中应重点关注结构保护方案对比和施工技术。详细讨论了过路段管道结构保护的5种方案(包括直埋管道、内切圆钢套管保护、内切圆混凝土半包保护、满包同心圆钢套管保护、钢筋混凝土包管保护)以及接驳处2种墙墩设计方案的技术和经济可行性。结果表明,钢筋混凝土包管保护方案在工期、施工工艺以及满足迁改工程要求等方面具有综合优势;预先浇筑的钢筋混凝土墙墩可用作管道接驳转弯处的临时拖拉墩,缩短接驳时间。此外,对过路段、保护点和接驳点的施工工艺进行了优化设计,并提前施工,以确保在短时间内完成原水管道的迁改和接驳,保障民生用水。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.

关 键 词：原水管道 迁改工程 结构保护 施工设计 方案比选 

分 类 号：TU991[建筑科学—市政工程]