冰力作用下穿越河流输水管线的可靠性分析

Reliability analysis of water line passing through rivers under ice load

针对我国北方河冰灾害情况,分析了冰力作用下穿越河流输水管道的受力情况,研究了其失效模式,提出了冰荷载的计算模型;在此基础上,建立了输水管道在冰荷载作用下安全裕度方程,提出了冰力作用下输水管线可靠性的计算方法,并结合实际计算,验证了方法的适用性。

In light of situation of river′s ice disaster in northern China,the force borne by water line passing through rivers under action of ice was analyzed,the failure mode of the water line was researched and the calculating model for estimation of ice load was presented.Based on this,safety margin equation for water line under ice load was established and the calculation method for reliability of water line undr ice action was presented.In combination with actual calculation the adaptability of the method was verified.