无粘结预应力技术在混凝土压力管中的试验研究

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。

Study on Technique of Prestressed with Unbonded Tendons Applied Concrete Pipes

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.