大跨度PC桥孔道摩阻偏差系数试验研究  

Experiment Research on the Friction Factor between Tendons and Duct Wall in Long-span PC Continuous Beam Bridge

作　　者：涂杨志[1] 张开银[1] 张世飙 彭翠玲[1] 叶方谦 

机构地区：[1]武汉理工大学,湖北武汉430063 [2]湖北省襄十高速公路建设指挥部,湖北十堰442000

出　　处：《公路交通科技》2003年第6期45-48,共4页Journal of Highway and Transportation Research and Development

基　　金：湖北省自然科学基金资助项目(2001ABB084);湖北省交通科技资助项目(鄂交科教[2002]466号)

摘　　要：通过对湖北襄十高速公路襄樊汉江四桥预应力混凝土连续梁桥纵向预应力束孔道摩阻的测试,并加以数据分析,给出合理的管道摩阻偏差系数值。其结果对该桥梁结构的应力和变形计算、结构的施工控制,提供了可靠的数据,确保了施工质量。In this paper,a reasonable friction factor k between longitudinal prestressed tendons and the wall of duct on the prestressed concrete continuous beam bridge is presented.The experiment was done on the fourth-Hanjinag bridge of Xiang-Shi expressway in Hubei Province,and a great number of data were analysed.The conclusion may provide reliable parameters for calculating stress and deformation of bridge structure,and the conclusion also can be used in structure construction controlling.So the experiment research on the friction factor between tendons and duct wall in long-span prestressed continuous beam bridge is very important for bridge design and construction control.

关 键 词：预应力筋 孔道摩擦 摩擦偏差系数 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]