Stress Analysis On Straight Prestress Strengthening Of Anchorage Zone Of Cable-stayed Brige

The anchorage zone of the pylon is a key part for cable-stayed bridges, where the local concentrated force of cable will be transferred to the pylon safely and uniformly. Because of the powerful local concentrated forces, anchoring forces from prestressed steels and weaken factors from opening holes, the strength state at this area is very complicated. Therefore, analysis of strength performance at the anchorage zone of cable-stayed bridge tower has been attracted attention in bridge engineering all the time and anchorage zone of tower is also the difficult and important part in designing and conshucting of cable-stayed bridge. In order to deal with the problem,not only is the model test a usually methd,but also the finite element method is important to do with it before the model test .The finite element method is able to improve the model test and make up the deficiency of it.In the main tower design of cable-stayed bridges , traditional annular tedon and liner finish rolling deformed bar to reinforce the anchorage zone of the main tower.In China the scholars who research the before are many,but the scholars are few who reseach the behind. Based on Guan Yinyan Changjiang River Bridge of Chongqing, clear numerical analysis and the optimum plan was also proposed in this paper. The content of the paper is as follows:With the analysis of the results, some valuable rules were got and can be used for reference in design for homothetic anchorage zones.