| 直埋热水供热管道摩擦力计算探讨 |
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| 引用本文： | 赵志刚,门亚琨,杨宝锐.直埋热水供热管道摩擦力计算探讨[J].煤气与热力,2011,31(9):15-17. |
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| 作者姓名： | 赵志刚 门亚琨 杨宝锐 |
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| 作者单位： | 中科院建筑设计研究院有限公司热力所,北京,100190 |
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| 摘 要： | 根据CJJ／T81-98《城镇直埋供热管道工程技术规程》，给出单位长度直埋供热管道与土壤之间摩擦力的计算式。针对大管径（大于DN500mm）管道，对计算式中，直埋供热管道外壳与土壤间的摩擦系数、管顶覆土深度的取值进行了探讨。结合实际工程，对以上两个参数取值，对DN800mm管段进行设计计算，运行效果良好，降低了固定支座造价。
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| 关 键 词： | 直埋热水供热管道 摩擦系数 管顶覆土深度 摩擦力 |
Discussion on Friction Calculation of Directly Buried Hot-water Heating Pipeline |
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| ZHAO Zhigang,MEN Yakun,YANG Baorui.Discussion on Friction Calculation of Directly Buried Hot-water Heating Pipeline[J].Gas & Heat,2011,31(9):15-17. |
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| Authors: | ZHAO Zhigang MEN Yakun YANG Baorui |
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| Affiliation: | ZHAO Zhigang, MEN Yakun, YANG Baorui |
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| Abstract: | According to the Technical Specification for Directly Buried Heating Pipeline Engineering in City （ CJJ/T 81 - 98） the calculation formula of friction between per unit length directly buried hot-wa- ter heating pipeline and soil is given. The friction coefficient between directly buried hot-water heating pipeline shell and soil as well as the cover depth above top of pipe for large diameter pipeline of more than DN 500 mm are discussed. The above-mentioned parameters of DN 800 mm pipe are designed and calculated with an engineering example. The operation effect is good, and the cost of fixed supports is reduced. |
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| Keywords: | directly buried hot-water heating pipeline friction coefficient cover depth abovetop of pipe friction |
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