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首页> 外文会议>American Society of Civil Engineers(ASCE) International Conference on Pipeline Engineering and Construction v.1; 20030713-20030716; Baltimore,MD; US >Risk Analysis of Prestressed Concrete Cylinder Pipe with Broken Wires
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Risk Analysis of Prestressed Concrete Cylinder Pipe with Broken Wires

机译：断线预应力混凝土圆筒管的风险分析

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摘要

This paper presents the results of a research program sponsored by the PCCP Users Group on the risk of failure of prestressed concrete cylinder pipe with broken wires subjected to the combined effects of pipe and fluid weights, earth load and internal pressure. As a part of this research work, we performed nonlinear finite-element analysis of PCCP with broken wires subjected to the combined effects of internal pressure, pipe and fluid weights and earth loads, modeling the cracking process and the interlocking behavior of cracked concrete core. We also performed field investigation of the condition of pipes outside of the broken wire zone and hydrostatic pressure testing of pipes with broken wires. Based on the results of the finite-element analyses, hydrostatic pressure tests and field investigation of PCCP with broken wires, we have developed risk curves expressed in terms of pressures versus the number of broken wires corresponding to serviceability, damage and strength limit states, and repair priorities of PCCP with broken wires.
机译：本文介绍了由PCCP用户组发起的一项研究计划的结果，该研究计划涉及到预应力混凝土圆柱管断裂时的断裂风险，这些断裂受管道和流体重量，土载荷和内部压力的综合影响。作为这项研究工作的一部分，我们对断线的PCCP进行了非线性有限元分析，受到内部压力，管道和流体重量以及土载荷的共同影响，对开裂过程和开裂混凝土芯的联锁行为进行了建模。我们还对断丝区以外的管道状况进行了现场调查，并对断丝的管道进行了静水压力测试。根据有限元分析，静水压力测试和PCCP断线现场调查的结果，我们开发了风险曲线，用压力对断线的数量表示，对应于使用寿命，损坏和强度极限状态，以及用断线修复PCCP的优先级。

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