无补偿直埋供热管道应力计算理论探讨

Theoretical Discussion on Stress Calculation of Directly Buried Heat-supply Pipeline without Expansion Joint

对目前国内无补偿直埋供热管道应力计算采用的弹性理论、安定性理论进行了介绍。通过理论分析和对比,提出在无补偿直埋供热管道应力计算中采用安定性理论有待商榷。

The elastic theory and shake-down theory in stress calculation of directly buried heatsupply pipeline without expansion joint recently applied in China are introduced. Through the theoretical analysis and comparison, it is put forward that using the shake-down theory in stress calculation of directly buried heat-supply pipeline without expansion joint should be discussed.