doi:

DOI: 10.3724/SP.J.1249.2018.04377

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2018/35:4 PP.377-382

Parameters analysis of earth-anchored preseressed concrete cable-stayed bridge with single pylon based on totally rigidity


Abstract:
Referencing the analytical calculation method of the pylon top horizontal displacement for double pylon self-anchored and partly earth-anchored cable-stayed bridge and combining the structural characteristics of dispersed cables and inclined pylon, we deduce the calculation formula of pylon top horizontal displacement of the structural integral rigidity in order to obtain the influence of variations of the parameters of single pylon earth-anchored PC cable-stayed bridge on the structure integral rigidity. The calculation precision is verified based on a background project, and the effects of pylon inclination, back cable inclination of anchor, cross section area and pylon rigidity on the integral rigidity are analyzed. The integral rigidity has negative correlation with pylon inclination and back cable inclination of anchor, more sensitive to pylon inclination. And the integral rigidity has positive correlation with back cable cross section area and pylon rigidity, obviously more sensitive to back cable cross section area. Therefore, pylon inclination, inclination and cross section area of back cable should be changed in turn when the integral rigidity needs to be adjusted. Meanwhile, the effect of pylon rigidity should be ignored.

Key words:bridge engineering,preseressed concrete,cable-stayed bridge,earth-anchored,integral rigidity,pylon top displacement

ReleaseDate:2018-07-26 10:51:03



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