[1]翟科杰,方宏远,张冲博,等.PCCP管承插口力学性能与失效模式仿真分析[J].中国给水排水,2020,36(20):10-18.
　ZHAI Ke-jie,FANG Hong-yuan,ZHANG Chong-bo,et al.Mechanical Properties and Failure Mode Simulation Analysis of Joints in PCCP[J].China Water & Wastewater,2020,36(20):10-18.
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PCCP管承插口力学性能与失效模式仿真分析

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷 期数: 2020年第20期 页码: 10-18 栏目: 出版日期: 2020-10-17
Title:
Mechanical Properties and Failure Mode Simulation Analysis of Joints in PCCP
作者:
翟科杰1,方宏远2,3,4,张冲博2,3,4,李斌2,3,4,薛冰寒2,3,4,吴汉英2,3,4
(1.中山大学土木工程学院，广东广州510275；2.郑州大学水利科学与工程学院，河南郑州450001；3.重大基础设施检测修复技术国家地方联合工程实验室，河南郑州450001；4.水利与交通基础设施安全防护河南省协同创新中心，河南郑州450001)
Author(s):
ZHAI Ke-jie1,FANG Hong-yuan2,3,4,ZHANG Chong-bo2,3,4,LI Bin2,3,4,XUE Bing-han2,3,4,WU Han-ying2,3,4
(1. School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China; 2. School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China; 3. National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China; 4. The Collaborative Innovation Center of Water Conservancy & Transportation Infrastructure Safety, Henan Province, Zhengzhou 450001, China)
关键词:
预应力钢筒混凝土管; 承插口; 相对转角; 力学性能; 失效分析
Keywords:
prestressed concrete cylinder pipe (PCCP); joint; relative angle; mechanical response; failure analysis
摘要:
预应力钢筒混凝土管（PCCP）承插口接头是易发生破坏的位置。为了研究承插口在发生相对转角时的受力特性与失效模式，基于非线性有限元建立了PCCP承插口精细化三维模型，结合承插口处各材料应力分布与橡胶圈的滑出失效分析，研究了相对转角、接头间隙和配合间隙对承插口的影响。结果表明，当相对转角达到1.434°时，承插口会因橡胶圈的完全滑出而失效，且承插口处混凝土最易发生拉裂破坏；配合间隙的增加会使橡胶圈滑出量增大，但有助于减小各材料的应力；接头间隙的增加不利于承插口接头保护。研究结果可为PCCP管道设计、施工与维护提供依据。
Abstract:
The joint of prestressed concrete cylinder pipe (PCCP) is the most vulnerable location. In order to study the mechanical response and failure mode of the joint when the relative angle occurs, a refined three-dimensional model of the PCCP joint was established based on nonlinear finite element method. Combining the stress distribution of each material at the joint and the slip-out failure analysis of the rubber, the effects of the relative angle, joint gap, and the fit clearance on the joint were studied. The results showed that when the relative angle reached 1.434°, the joint would fail due to the rubber slipping out completely, and the concrete at the joint was the most vulnerable to tensile cracking. The slip out of the rubber would increase with the development of fit clearance, but it would help reduce the stress of each material. The increase of the joint gap was not conducive to the protection of the joint. The research results can provide basis for the design, construction and maintenance of PCCP.
更新日期/Last Update: 2020-10-17