双区域断丝PCCP极限内水压力及破坏模式研究_《混凝土与水泥制品》杂志社

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双区域断丝PCCP极限内水压力及破坏模式研究

Study on Failure Modes and Ultimate Internal Pressure for PCCP with Double-zone Broken Wires

2022年第7期

双区域断丝；极限内水压力；预应力钢筒混凝土管；失效模式；非线性有限元

Double-zone broken wire; Ultimate internal pressure; Prestressed concrete cylinder pipe; Failure mode; Nonlinear finite element analysis

2022年第7期

10.19761/j.1000-4637.2022.07.045.06

国家自然科学基金面上项目（52079024）；中央高校基本科研业务费资助项目（DUT20LAB133）。

张宽1，冯新1，李海珍1，刘贤良2

1.大连理工大学建设工程学部，辽宁大连 116024；2.大连港油品码头公司，辽宁大连 116601

张宽1，冯新1，李海珍1，刘贤良2

张宽,冯新,李海珍,等.双区域断丝PCCP极限内水压力及破坏模式研究[J].混凝土与水泥制品,2022(7):45-49,68.

ZHANG K,FENG X,LI H Z,et al.Study on Failure Modes and Ultimate Internal Pressure for PCCP with Double-zone Broken Wires[J].China Concrete and Cement Products,2022(7):45-49,68.

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摘要：为研究腐蚀断裂对预应力钢筒混凝土管（PCCP）失效的影响，建立了PCCP双区域断丝三维非线性管-土相互作用有限元模型，得到了不同间距轴向双区域断丝情况下管道的损伤演化、失效模式和极限承载能力。结果表明，断丝区域间距越大，相互影响越小，当间距大于150 cm后，两个区域之间基本没有相互作用，其极限内水压力与单区域断丝的结果差别显著。研究结果可为PCCP实际工程中的双区域断丝损伤评价及承载能力分析提供参考。 Abstract: In order to study the effect of corrosion fracture on the failure of prestressed concrete cylinder pipe (PCCP), the 3D nonlinear finite element model of PCCP with double-zone broken wires was established to investigate the structural responses and the ultimate internal pressure by considering the pipe-soil interaction. The results show that the greater the distance between the two regions, the smaller the mutual influence. When the interval is greater than 150 cm, it can be considered that there is no interaction between the two regions, and the ultimate internal pressure is much larger than that of the single-zone broken wires with the same axial length. The research results can provide the theoretical basis for multi-region broken wire damage evaluation and bearing capacity analysis in real applications.

英文名 : Study on Failure Modes and Ultimate Internal Pressure for PCCP with Double-zone Broken Wires

刊期 : 2022年第7期

关键词 : 双区域断丝；极限内水压力；预应力钢筒混凝土管；失效模式；非线性有限元

Key words : Double-zone broken wire; Ultimate internal pressure; Prestressed concrete cylinder pipe; Failure mode; Nonlinear finite element analysis

刊期 : 2022年第7期

DOI : 10.19761/j.1000-4637.2022.07.045.06

文章编号 :

基金项目 : 国家自然科学基金面上项目（52079024）；中央高校基本科研业务费资助项目（DUT20LAB133）。

作者 : 张宽1，冯新1，李海珍1，刘贤良2

单位 : 1.大连理工大学建设工程学部，辽宁大连 116024；2.大连港油品码头公司，辽宁大连 116601

张宽1，冯新1，李海珍1，刘贤良2

张宽,冯新,李海珍,等.双区域断丝PCCP极限内水压力及破坏模式研究[J].混凝土与水泥制品,2022(7):45-49,68.

ZHANG K,FENG X,LI H Z,et al.Study on Failure Modes and Ultimate Internal Pressure for PCCP with Double-zone Broken Wires[J].China Concrete and Cement Products,2022(7):45-49,68.

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摘要

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结论

参考文献

引用本文

Abstract: In order to study the effect of corrosion fracture on the failure of prestressed concrete cylinder pipe (PCCP), the 3D nonlinear finite element model of PCCP with double-zone broken wires was established to investigate the structural responses and the ultimate internal pressure by considering the pipe-soil interaction. The results show that the greater the distance between the two regions, the smaller the mutual influence. When the interval is greater than 150 cm, it can be considered that there is no interaction between the two regions, and the ultimate internal pressure is much larger than that of the single-zone broken wires with the same axial length. The research results can provide the theoretical basis for multi-region broken wire damage evaluation and bearing capacity analysis in real applications.

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