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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 >Pipeline System Renewal Technologies
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Pipeline System Renewal Technologies

机译：管道系统更新技术

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The ASCE Pipeline Infrastructure (PINS) Committee formed the Task Committee "Design Guidelines for Pipeline Renewal Systems" during 1998. Prior to 1998 it was apparent that the reality of loadings was altogether different from what design engineers have been using. The PINS Task Committee initiated a research effort evaluating the design methodologies and material performance of renewal methods. Many design procedures were overly conservative while others were insufficient and/or incomplete. With ongoing research, the following parameters were evaluated; 1) soil loadings, 2) hydrostatic buckling, 3) annulus grouting, 4) soil buckling, 5) flexural modulus, 6) flexible/rigid design, 7) ovality, 8) strain, and 9) bending stress. Due to the importance of these parameters and many other issues, it was determined by the PINS Committee that the Task Committee develop a design guideline pamphlet for the designer of pipeline renewal systems. This being very timely in that the ASCE Manual No. 62 was up for review and many of these items were needed for manual review updating. The principal problem facing the Task Committee was re-evaluating the currently used tech- nologies regarding their correctness, validity and foundation. It was a general agreement and understanding that most of the design input was based on new flexible pipe installation standards. This in itself was basically irrational in that installation stresses and direct loading was for a trench condition. The Task Committee from the outset realized that the arbitrarily established terminology of "Partially Deteriorated" and 'Totally Deteriorated" concepts were misleading and somewhat misunderstood. The initial work was started on redefining the pipe conditions for evaluating the needs of system renewal. It was determined during the research that some of the committee members would develop papers addressing flexible/rigid design, hydrostatic loadings and annulus grouting issues. The papers address most of the parameters that were originally outlined. These papers were written and reviewed by the Task Committee and disseminated to the Pipeline Infrastructure Committee for their review and evaluation. These papers and an Introduction are the input for the ASCE Pamphlet and will soon be available for designer distribution and use.
机译：ASCE管道基础设施（PINS）委员会在1998年成立了任务委员会“管道更新系统设计准则”。在1998年之前，很明显，负载的实际情况与设计工程师一直在使用的情况完全不同。 PINS任务委员会发起了一项研究工作，以评估更新方法的设计方法和材料性能。许多设计程序过于保守，而另一些则不足和/或不完整。经过不断的研究，对以下参数进行了评估； 1）土壤荷载，2）静液压屈曲，3）环形灌浆，4）土壤屈曲，5）弯曲模量，6）柔性/刚性设计，7）椭圆度，8）应变和9）弯曲应力。由于这些参数的重要性和许多其他问题，PINS委员会确定任务委员会为管道更新系统的设计人员开发了设计指南手册。这是非常及时的，因为ASCE第62号手册已经过审核，并且其中许多项目需要进行手动审核更新。任务委员会面临的主要问题是重新评估当前使用的技术的正确性，有效性和基础性。达成了一项普遍协议，并理解大多数设计输入均基于新的挠性管道安装标准。就安装应力而言，这本身基本上是不合理的，而直接加载是针对沟槽条件。任务委员会从一开始就意识到，任意确立的“部分恶化”和“完全恶化”的术语具有误导性和误解，开始了重新定义管道条件以评估系统更新需求的初步工作。在研究过程中，委员会的一些成员将开发解决柔性/刚性设计，静水荷载和环空注浆问题的论文，这些论文解决了最初概述的大多数参数，这些论文由任务委员会撰写和审查，并分发给了这些文件和引言是ASCE手册的输入内容，不久将可供设计人员分发和使用。

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