For construction practice, the paper analysed some problem in waterproof, drainage design and construction of freeway communication conduit, proposed some methods for solving the problem.
从工程施工实践的角度，剖析了高速公路通讯管道防排水工程设计与施工中出现的一些问题，并提出了解决的办法。
The analysis results are that the design condition of hot gas conduit falls in the stability area, in other word, running at design condition, the flow induced large amplitude vibration doesn't exist.
分析结果表明，热气导管的设计工况完全处于稳定区内，即其在设计工况下运行时，不会产生大振幅的流致振动。
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