Fundamentals of Buried Pipe Installation

埋地管道安装的基础知识

• 批准号: 9309533
• 负责人: Ernest Selig
• 金额: $ 40万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1997-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9309533&HistoricalAwards=false
• 关键词: Fundamentals; Buried; Pipe; Installation

WPC 2 B V J Z Courier T ? x x x x 6 X @ C X @ QMS PS 800 II QMPS80II.PRS x @ h h h h v?X @ #| x 2 9309533 Selig The specific objectives of the research are: 1) critically examine current pipe installation practice, 2) evaluate the implications of installation practices on pipe performance to assess the benefits of new methods, 3) determine the basis for representing the influence of adjacent methods 3) determine the basis for representing the influence of adjacent undisturbed soil conditions, 4) define bedding alternatives and their effect on performance, and 5) develop improved compaction specifications for more efficient construction. Because these subjects have a very important influence on pipe performance, and because the early work is out of date as a result of changes in engineering and construction technologies over the years, the proposed new research is critically needed. Laboratory tests will be used to investigate compatibility of backfill soil, to study soil behavior in the important haunch zone and to investigate stresses and deflections induced during compaction of the backfill. Field tests will be performed to investigate the nature of bedding and installation methods under realistic conditions. Computer analyses will be used to interpret the experimental conditions and extend the applicability to conditions not tested.

wpc2 B V J Z Courier T ？QMS PS 800 II QMPS80II QMPS80IIPRS x @ h h h h v？研究的具体目标是：1)严格检查当前的管道安装实践，2)评估安装实践对管道性能的影响，以评估新方法的好处，3)确定表示相邻方法影响的基础，3)确定表示相邻未受干扰土壤条件影响的基础，4)定义垫层替代品及其对性能的影响，5)制定改进的压实规范，以提高施工效率。由于这些课题对管道性能有非常重要的影响，并且由于多年来工程和施工技术的变化，早期的工作已经过时，因此迫切需要提出新的研究。实验室试验将用于研究回填土的相容性，研究重要后弯区的土壤行为，并研究在回填土压实过程中引起的应力和挠度。将进行现场试验，以调查实际条件下垫层的性质和安装方法。计算机分析将用于解释实验条件，并将其适用性扩展到未测试的条件。