大口径PCCP断丝加固技术工程应用和效果评价_《混凝土与水泥制品》杂志社

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大口径PCCP断丝加固技术工程应用和效果评价

Engineering Practice and Effect Evaluation of Reinforcement Technologies for Large-Diameter PCCP with Broken Wires

2023年第4期

预应力钢筒混凝土管(PCCP)；断丝；加固技术；碳纤维；钢绞线

Prestressed concrete cylinder pipe (PCCP); Broken wire; Reinforcement technology; CFRP; Steel strand

2023年第4期

10.19761/j.1000-4637.2023.04.039.06

赵绍华1，王英歌1，张海鹏1，窦铁生2，赵祎3

1.北京市南水北调干线管理处，北京 100097；2.中国水利水电科学研究院，北京 100038； 3.北京市城市河湖管理处，北京 100089

赵绍华1，王英歌1，张海鹏1，窦铁生2，赵祎3

赵绍华,王英歌,张海鹏,等.大口径PCCP断丝加固技术工程应用和效果评价[J].混凝土与水泥制品,2023(4):39-43,53.

ZHAO S H,WANG Y G,ZHANG H P,et al.Engineering Practice and Effect Evaluation of Reinforcement Technologies for Large-Diameter PCCP with Broken Wires[J].China Concrete and Cement Products,2023(4):39-43,53.

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摘要：针对埋地预应力钢筒混凝土管（PCCP）的断丝现象，介绍了常用的三种加固方案，即在断丝管节内壁粘贴碳纤维片材、对断丝管节进行体外预应力加固以及更换断丝管节方式对其进行了修补加固。为了验证这些加固技术的应用效果，对断丝管节加固前后的断丝数据及冬夏季典型时段断丝数据进行了分析，并对加固方案效果进行了评价。结果表明：碳纤维加固不能显著减少断丝的持续发生；体外预应力加固效果明显，可基本解决断丝的发生，是相对可靠的断丝管节加固技术；更换断丝管节，需耗费大量的人财物，适用于管线应急修复。 Abstract: Due to the broken wires phenomenon of buried prestressed concrete cylinder pipes (PCCP), the reinforced technologies method of pasting CFRP on the inner wall, strengthening with external prestressed steel strands and replacing the broken pipes were introduced. In order to determine the practical effect of reinforcement technology, the data of broken wires before and after the reinforcement of broken pipes and the data of broken wires during typical periods in winter and summer were studied and analyzed. The results show that the reinforement technology with CFRP cannot reduce the continuous occurrence of broken wires. And the reinforcement technology with external prestressed steel strands has obvious reinforcement effect, which can basically solve the occurrence of broken wires, so it is a reliable reinforcement technology for the pipelines with broken wires. The replacement of the broken pipe requires a lot of people and property, and is suitable for pipeline emergency repair.

英文名 : Engineering Practice and Effect Evaluation of Reinforcement Technologies for Large-Diameter PCCP with Broken Wires

刊期 : 2023年第4期

关键词 : 预应力钢筒混凝土管(PCCP)；断丝；加固技术；碳纤维；钢绞线

Key words : Prestressed concrete cylinder pipe (PCCP); Broken wire; Reinforcement technology; CFRP; Steel strand

刊期 : 2023年第4期

DOI : 10.19761/j.1000-4637.2023.04.039.06

文章编号 :

基金项目 :

作者 : 赵绍华1，王英歌1，张海鹏1，窦铁生2，赵祎3

单位 : 1.北京市南水北调干线管理处，北京 100097；2.中国水利水电科学研究院，北京 100038； 3.北京市城市河湖管理处，北京 100089

赵绍华1，王英歌1，张海鹏1，窦铁生2，赵祎3

赵绍华,王英歌,张海鹏,等.大口径PCCP断丝加固技术工程应用和效果评价[J].混凝土与水泥制品,2023(4):39-43,53.

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摘要

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结论

参考文献

引用本文

Abstract: Due to the broken wires phenomenon of buried prestressed concrete cylinder pipes (PCCP), the reinforced technologies method of pasting CFRP on the inner wall, strengthening with external prestressed steel strands and replacing the broken pipes were introduced. In order to determine the practical effect of reinforcement technology, the data of broken wires before and after the reinforcement of broken pipes and the data of broken wires during typical periods in winter and summer were studied and analyzed. The results show that the reinforement technology with CFRP cannot reduce the continuous occurrence of broken wires. And the reinforcement technology with external prestressed steel strands has obvious reinforcement effect, which can basically solve the occurrence of broken wires, so it is a reliable reinforcement technology for the pipelines with broken wires. The replacement of the broken pipe requires a lot of people and property, and is suitable for pipeline emergency repair.

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