Theoretical Calculation And Experimental Analysis Of "#" Type Prestressed System The Cable Tower Anchorage Zone Of Cable-Stayed Bridge

With the development of technology and the increasing requirement of traffic, bridge class will be higher and bridge span is longer. Cable-stayed bridge is a main style of long span bridge, and is widely applied in practice more and more. JiangJin Yangtse Brdige in Chingqing is taken as an engineering example in this thesis. On basis of collecting information about the application of prestressed system to anchorage zone of pylon for cable-stayed bridge, theoretical analysis and full-scale mode test are carried out to research the application of circular prestressed system which radius is small and prestressed force is strong.Firstly,the domestic researches, which have been reported, are introduced. Then the characteristic of the system in estimation of prestressed losses is analyzed by theoretical method and experiment, and the reasons that the elimination of tendon is large and test results are not consistent are pointed. Using FEM software ANSYS, anchorage zone of pylon are analyzed. The analysis result is compared with that of full-scale model test.In this thesis, theoretical analysis and full-scale mode test are carried out to research the application of"#"type prestressed system. Some general conclusions obtained can be regarded as the reference of related codes. The research is useful in the structural design and construction practices.