塑料波纹管与铁皮波纹管摩阻系数对比分析  

Comparison and Analysis of Prestressing Frictional Resistance Loss Factors of Plastic and Iron Sheet Corrugated Ducts

作　　者：张秋陵[1] 肖光宏[2] 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆交通大学土木学院,重庆400074

出　　处：《世界桥梁》2010年第3期47-49,共3页World Bridges

基　　金：重庆市自然科学基金项目(8577)

摘　　要：为了解塑料波纹管和铁皮波纹管的摩阻损失,以融侨大道螺旋桥为研究对象,选取该桥五跨一联的曲梁内安放塑料波纹管,在其四跨一联的梁段内安放铁皮波纹管,分别测出其摩阻损失值,采用数理统计回归方法求得预应力摩阻损失系数μ、k,并对2种管道的摩阻损失系数进行比较分析。试验结果表明:采用塑料波纹管可有效减少预应力摩阻损失,管道长度越长,塑料波纹管减少摩阻损失效果越显著。To have a good understanding of the prestressing frictional resistance loss of both the plastic and iron sheet corrugated ducts,the Rongqiao Road Spiral Bridge in Chongqing was cited as a research object,a 5-span curved girder in one continuous unit and a 4-span curved girder in one continuous unit of the Bridge were selected and the plastic corrugated ducts and iron sheet corrugated ducts were respectively arranged in the girders.The prestressing frictional resistance loss values of the two types of the du...

关 键 词：铁皮波纹管 塑料波纹管 空间曲线 预应力 摩阻系数 摩阻损失 

分 类 号：U444[建筑科学—桥梁与隧道工程]