厂区热力管网典型π型弯支座反力对比研究

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〔摘 要〕厂区热力管网的热膨胀常采用π型弯进行吸收，不同π型弯的型式其支座反力的表现不尽相同，文章将其归纳为6种典型型式，并分别建立了相应型式的管系有限元模型，通过对各有限元模型进行计算分析，对比研究厂区热力管网各种空间π型弯型式的支座反力表现（轴向、横向、竖向反力值及支座脱空情况）。

〔关键词〕厂区热力管网；π型弯；有限元；管系柔性分析；支座反力

中图分类号：TK2      文献标志码：B  文章编号：1004-4345（2024）01-0044-05

Comparative Study on the Reaction of Typical π-Shaped Bend Support in the Plant

Heat Supply Pipe Network

JIA Zhe

（China Nerin Engineering Co.， Ltd.， Nanchang， Jiangxi 330038， China）

Abstract   The thermal expansion of the plant heat supply pipe network is often absorbed by π - shaped bends. Different types of π - shaped bend exhibit different support reactions， which is classified into six typical types. The corresponding finite element models of different types of the pipe systems are established. Through calculation and analysis of the finite element models， the support reaction performances of different types of π - shaped bend in various spaces are conducted in a comparative study， including axial， horizontal and vertical reaction values of the plant heat supply pipe network， as well as support bearing separation.

Keywords  plant heat supply pipe network; π-shaped bend; finite element; flexibility analysis of pipe system ; support reaction

随着工业厂区大型化、规模化发展，热力管道已逐渐成为冶金、化工等领域厂区综合管网的重要组成部分。（剩余4424字）