民用高层建筑翻弯跨越交叉管道应力研究

Research on Stress of Turning over Crossing Pipes in Civil High-Rise Buildings

摘要: 民用高层建筑复杂的管线很容易引发同水平面不同管道交叉的问题，而翻弯跨越交叉管道的处理方式成为较为合理的处理方法，因此针对上述方法的管道应力分布开展研究有相当的必要性。本文对采用上下90˚、120˚与135˚翻弯跨越的管道的应力分布进行研究，得出结论：一次最大应力点为前后直管段支吊架点，且随着翻弯角度增大，应力水平逐渐降低，以限制一次应力为目的时135˚翻弯为最佳选择；同等温度条件下，翻弯角度越大，二次应力越大，以限制二次应力为目的时90˚翻弯为最佳选择。

Abstract: The complicated pipelines of civil high-rise buildings can easily lead to the problem of crossing different pipelines in the horizontal plane. And turning over the intersecting pipeline becomes a more reasonable countermeasure. Therefore, it is quite necessary to carry out research on the pipeline stress distribution of the above method. In this paper, the stress distribution of pipelines spanning 90˚, 120˚ and 135˚ is studied. It is concluded that the maximum stress point is the front and rear straight pipe supporting hanger points, and when the turning angle is increased, the stress level is gradually reduced, and the 135˚ turning is the best choice for the purpose of limiting the primary stress. Under the same temperature condition, the larger the turning angle is, the larger the secondary stress is, so as to limit the secondary stress. 90˚ turning is the best choice for the purpose.