The elderly water supply pipelines rehabilitated with cured-in-place-pipe (CIPP) technology can withstand internal water pressure loads. However, the existing pipeline's hole defects provide seepage channels for groundwater around the pipe, leading to a significant increase in local static water external pressure and causing instability and failure of the lining. Through static water external pressure tests and finite element analysis of two full-scale pipeline groups, DN 600 and DN 1000, this study investigates the deformation patterns and instability characteristics of the cured lining under the influence of static water external pressure. It explores the influence of lining DR values and ellipticity on the buckling behavior of the inner lining under interface bonding conditions. The results indicate that: The inner lining undergoes five stages under static water external pressure: uplift, bending, ultimate external pressure buckling, local fiber fracture, and lining fracture. The bonding strength of the interface significantly affects the buckling of the lining. When repairing water supply pipes using CIPP technology, it is essential to ensure the durability of the bonding performance and bonding effect between the CIPP lining and the existing pipeline.
Luo Hongchuan
,
Ma Baosong
,
Zheng Lining
,
Bi Jingjie
,
Zhao Yahong
. Research on Full-Scale Testing of Stability in Water Supply Pipeline Linings under External Hydrostatic Pressure[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(6)
: 2040
-2050
.
DOI: 10.20174/j.JUSE.2025.06.20
[1] 马保松.非开挖管道修复更新技术[M].北京:人民交通出版社, 2014.(Ma Baosong.Trenchless Pipeline Rehabilitation and Renewal Technology[M].Beijing: China Communications Press, 2014.(in Chinese))
[2] 向维刚, 马保松, 赵雅宏.给排水管道非开挖CIPP修复技术研究综述[J].中国给水排水, 2020, 36(20): 1-9.(Xiang Weigang, Ma Baosong, Zhao Yahong.Research Review on Trenchless CIPP Repair Technology in Water Supply and Drainage Pipes[J].China Water & Wastewater, 2020, 36(20): 1-9.(in Chinese))
[3] 李明.排水管道CIPP法修复内衬结构稳定性分析[J].铁道建筑技术, 2022(10): 138-43.(Li Ming.Analysis of Structural Stability of CIPP Liner for Drainage Pipe Rehabilitation[J].Railway Construction Technology, 2022(10): 138-43.(in Chinese))
[4] Glock D.Post-critical behavior of a rigidly encased circular pipe subject to external water pressure and temperature rise[J].Der Stahlbau, 1977, 46(7): 212-217.
[5] 郑玉,郑世华.非开挖紫外光固化技术在砖涵修复中的应用[J].地下空间与工程学报, 2020, 16(增2):812-817.(Zheng Yu, Zheng Shihua.Application of Trenchless UV Curing Technology in the Repair of Brick Culvert[J].Chinese Journal of Underground Space and Engineering.2020, 16(Supp.2):812-817.(in Chinese))
[6] Boot J C, Javadi A A, Toropova I L.The structural performance of polymeric linings for nominally cylindrical gravity pipes[J].Thin-Walled Structures, 2004, 42(8): 1139-60.
[7] 周维.管道薄壁不锈钢内衬屈曲失效理论与试验研究[D].武汉:中国地质大学, 2017.(Zhou Wei.Theoretical and Experimental Study on Buckling failure of the Thin-wall Stainless Steel Liner of Pipelines.Wuhan: China University of Geosciences (Wuhan), 2017.(in Chinese))
[8] 李秀锋, 李涛, 梁光强, 等.海底管道侧向屈曲激发设计应用及验证[J].中国海洋平台, 2023, 38(5): 67-74, 94.(Li Xiufeng, Li Tao, Liang Guangqiang, et al.Design, Application and Verification of Subsea Pipeline Lateral Buckling lnitiator[J].China Offshore Platform, 2023, 38(5): 67-74, 94.(in Chinese))
[9] 王诺思.纤维缠绕增强复合管外压及组合荷载下的屈曲性能研究[D].杭州: 浙江大学, 2013.(Wang Ruosi.Investigation on Buckling and Collapse Mechanisms of Filament-wound Fiber-reinforced Composite Pipe under External Pressure and Combined Load[D].Hangzhou: Zhejiang University.2013.(in Chinese))
[10] Aggarwal S C, Cooper M J.External pressure testing of Insituform lining[J].Internal ReportCoventry: Coventry (Lanchester) Polytechnic, 1984, 124: 1350.
[11] 赵雅宏, 马保松, 张海丰, 等.既有管道与内衬叠合界面受力性能及计算方法[J].哈尔滨工业大学学报, 2020, 52(11): 167-174.(Zhao Yahong, Ma Baosong, Zhang Haifeng, et al.Mechanical behavior and calculation method of interface between hostpipeline and lining[J].Journal of Harbin Institute of Technology.2020, 52(11): 167-174.(in Chinese))
[12] Treitz J, Lan H T, Moore I D, et al.Testing and analysis of PVC liners under simulated grouting pressure[J].Engineering Structures, 2022, 250: 113496.
