| 大管径热水供热管道直埋设计的探讨 |
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| 引用本文： | 牛小化.大管径热水供热管道直埋设计的探讨[J].煤气与热力,2007,27(7):76-81. |
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| 作者姓名： | 牛小化 |
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| 作者单位： | 北京特泽热力工程设计有限责任公司,北京,100027 |
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| 摘 要： | 介绍了直埋热水管道应力分析理论。从管道的屈服温差、单位长度摩擦力、直管段锚固段的强度、钢管椭圆化变形、水平转角管段的应力、疲劳破坏、局部屈曲、聚氨酯泡沫塑料保温层的剪切强度的设计计算分析了大管径热水管道直埋设计中的主要问题。
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| 关 键 词： | 热水供热管道 直埋敷设 大管径 管道强度 屈服极限 应力 |
| 文章编号： | 1000-4416（2007）07-0076-06 |
| 修稿时间： | 2007-01-232007-04-28 |
Discussion on Directly Buried Design of Large-diameter Hot-water Heating Pipeline |
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| NIU Xiao-hua.Discussion on Directly Buried Design of Large-diameter Hot-water Heating Pipeline[J].Gas & Heat,2007,27(7):76-81. |
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| Authors: | NIU Xiao-hua |
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| Affiliation: | Beijing Teze Heating Engineering Design Co., Ltd., Beijing 100027, China |
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| Abstract: | The stress analysis theory of directly buried hot-water heating pipeline is introduced.The main problems existing in directly buried design of large-diameter hot-water heating pipeline are analyzed in aspects of yield temperature difference of pipe,friction per unit length,strength of anchoring section of straight pipe,elliptical deformation of steel pipe,stress of horizontal corner section,fatigue fracture,local bending,design calculation of shear strength of polyurethane foam insulation layer and so on. |
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| Keywords: | hot-water heating pipeline directly buried installation large diameter pipe strength yield limit stress |
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