无粘结预应力技术在混凝土压力管中的试验研究  

Study on Technique of Prestressed with Unbonded Tendons Applied Concrete Pipes

作　　者：陆灏[1] 徐连兵[2] 

机构地区：[1]中南电力设计院,武汉430071 [2]中国国电集团公司,北京100034

出　　处：《特种结构》2007年第3期56-57,88,共3页Special Structures

摘　　要：本文首次将无粘结预应力技术运用到管道结构设计中,并针对圆形混凝土管道无粘结预应力张拉损失、管道应力分布、内压、外荷作用等方面进行了试验测试。测试结果表明,无粘结预应力混凝土管道在技术上是可行的,具有管体应力均匀、预应力张拉可灵活控制、管道整体制作等方面的优点,有着良好的工程运用前景。This paper applies prestressing-without-bond technique to the structure design of pipeline for the first time and makes tests on the design and experimentation of the stretching loss of prestressing-without-bond , stress distribution of conduit, and internal/external force. The result says , prestressing-without-bond concrete pipeline is feasible on technique. The characteristic is ： stress distribute uniformly, the stretching of prestressed can be controlled neatly and the pipe can be made as a whole. It will have a great future in project.

关 键 词：无粘结预应力 预应力损失 混凝土管道 试验 

分 类 号：TU375[建筑科学—结构工程] TU757