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首页> 外文期刊>Journal of Transportation Engineering >Peaking Deflections of Flexible Pipe during Initial Backfilling Process
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Peaking Deflections of Flexible Pipe during Initial Backfilling Process

机译：初始回填过程中挠性管的峰值挠度

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摘要

Most thermoplastic pipes exhibit peaking behavior during the initial backfilling process. It is shown with the actual field data that the peaking deflections can be beneficial for minimizing the long-term deflections of the pipe. An approach similar to the one proposed by Spangler is used to derive a formula for estimating the peaking deflections of thermoplastic pipe due to forces generated during the initial backfilling. The formula is tested in light of a number of field installation cases. The results show that the proposed formula predicts peaking deflections of both polyvinyl chloride and high density polyethylene pipes accurately under a variety of backfilled conditions.
机译：大多数热塑管在初始回填过程中都会出现峰化现象。实际的现场数据表明，峰值挠度可能有利于最大程度地减小管道的长期挠度。一种类似于Spangler提出的方法，可用来推导一个公式，用于估算由于初始回填过程中产生的力而导致的热塑性管的峰值挠度。该公式已根据许多现场安装案例进行了测试。结果表明，所提出的公式可预测各种回填条件下聚氯乙烯和高密度聚乙烯管道的峰值挠度。

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