摘要
虽然超大口径PCCP管道已经广泛应用在国内的大型调水工程中,但其断丝修复技术尚不成熟,针对断丝修复的效果分析甚少,基于工程实践的相关文献也屈指可数。国内某超大口径PCCP输水工程已出现多处预应力钢丝断裂现象,为了避免中断供水,除了在PCCP管的断丝区域黏贴碳纤维布并表面涂刷环氧涂层的补强加固措施外,还新增管道上方土体沉降监测、地下水位监测、实时断丝监测等措施进行监控保护。详细介绍了断丝修复后的保护方式,并通过监测数据分析修复效果,以期将这种技术更多地应用到工程实践中。
Although ultra-large diameter PCCP pipeline has been widely used in large-scale water diversion projects in China,its wire breakage repair technology is still immature,and there is little analysis on the effect of wire breakage repair,and there are few related literatures based on engineering practice.Fracture of prestressed steel wire has been already appeared in a ultra-large diameter PCCP Water Conveyance Project in China,In order to avoid interruption of water supply,in addition to the reinforcement measures of pasting carbon fiber cloth and coating epoxy coating on the broken area of PCCP pipe,measures such as soil settlement monitoring,groundwater level monitoring and real-time wire breakage monitoring are added to monitor and protect the ultra-large diameter PCCP water conveyance project.The protection method after wire breakage repair is introduced in detail,and the repair effect is analyzed by monitoring data,in order to apply this technology to engineering practice more.
作者
刘冬雨
郭子玉
冯萃敏
冉强三
张炯
LIU Dong-yu;GUO Zi-yu;FENG Cui-min;RAN Qiang-san;ZHANG Jiong(Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture, Beijing 100044, China;Beijing Daning Management Office of South-to-North Water Diversion, Beijing 100195, China;Beijing General Municipal Engineering Design & Research Institute Co. Ltd, Beijing 100082, China)
出处
《中国农村水利水电》
北大核心
2020年第2期72-76,共5页
China Rural Water and Hydropower
基金
北京市科技计划项目(Z171100000517007)
北京建筑大学研究生创新项目(PG2019044)。
