交通载荷作用下聚乙烯燃气管道失效率分析  

The Analysis of Failure Rate of Polyethylene Gas Pipeline under Traffic Load

作　　者：郑绵彬[1] 张玲[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《塑料工业》2009年第2期39-42,共4页China Plastics Industry

摘　　要：聚乙烯(PE)燃气管道具有的许多卓越特性,圆满地解决了传统管道的腐蚀和接头泄漏两大难题,但机械强度较低是其主要缺点,长期静液压强度(MRS)是衡量PE管材长期使用性能的主要指标。针对PE管材MRS值,建立了交通载荷作用下的失效率计算模型,并且编制了模型的计算机程序,通过简单的程序计算,能够获得PE管材在不同埋深及内外载荷共同作用下的失效率。Polyethylene （PE） gas pipeline had many outstanding features, which successfully solved thetwo major traditional pipeline corrosion and joint leakage problems. But the lower mechanical strength was the main drawback, and minimum required strength （MRS） was one of the key index to measure pipe performance of long-term use. This paper aimed at PE pipe MRS value to establish failure rate calculation model under traffic load and developed the model＇s computer program. Through simple procedure calculation, we could access to the PE pipe failure rate at different depths and under common internal and external load.

关 键 词：PE燃气管道 MRS 交通载荷 失效率 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]