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管状纺织复合材料以翻衬的方法衬于管道,以"管中管"的形式修复管道,受到翻转压力和输送介质压力的作用,其强度直接影响修复效果.本文中采用材料力学和工程流体力学相关理论,对管状纺织复合材料翻衬时和衬于管道后的受力情况,建立了较为系统且完整的计算公式,并以修复燃气管道为例,对管状纺织复合材料经向和纬向的强度进行了设计.结果表明:管道内压引起的管状纺织复合材料的纬向应力是经向应力的2倍;而翻转压力引起的经向应力,还与翻转速度和温度有关.

参考文献

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