Research On The Anchor Program Of The Tower Of Small And Medium Span Cable-stayed Bridge

The anchorage zone of the pylon, which bears giant cable forces and has complicated structure, is a key part for cable-stayed bridges. It is important to know the stress distribution of anchorage zones well. Not only is the model test a useful method to deal with this problem, but also the finite element is important to do with it before the model test. The finite element method is able to improve the model test and makes up the deficiency of it. Modern cable-stayed bridges not only meet the needs of the function, but also attach importance to the landscape design,so it restricts the sectional dimension of the anchorage. And some orthodox anchor manners were not used in actual projects.Due to the small dimension of the anchorage of the mid-small span cable-stayed bridges, this paper is based on the 2nd bridge of the project in Dalian worldview, putting forth three characters, and analyses the stress distribution of the anchorage zones and lower tower using the finite element software ANSYS.The three characters are compared in some aspects, and some correlative suggests are raised.With the analysis of the results, some valuable rules were got and can be used for reference in design, construction, monitor and control of the cable-stayed bridge for homothetic anchorage zones.