The Study Of Peristaltic Simulation And Safety Evaluation In Anchorage Of Suspension Bridge

As one of the particularly large bridges commonly built in China, and all locatedon vital communication lines, suspension bridges generally rank first in investmentand maintenance cost among various bridges. The two suspension bridges in theThree Gorges Reservoir Area, considering the relatively good engineering geologicalconditions, a tunnel anchorage system is thus preferred. However, after the reservoirstores water, the complex water erosion condition would lower the stability of thetunnel anchorage wall rock and the anchorage foundation, and change the anchorage’sstress and shape. All of these would result in motion of the anchorage structure, whichwould have effects on all the main components of the suspension bridge, and threatenthe secure of using it. Therefore, it’s quite emergent and practical to conductresearches on the stress and deformation caused by motion of a suspension bridge’sanchorage.This paper introduces the three calculation theory of suspension bridge, theprinciple of analytic method and the finite element method to calculate linearsuspension bridge. Then based on zhongxian Yangtze River Bridge, analyzed theanchorage structural displacement influence on main cables, the boom, reinforcedbeams, stress and deformation of the cable tower, compared the changing trend of theforce and deformation of the main component under different displacement ofanchorage value. On this basis, in different,span, different span ratio, different cabletower height, analyzed the structural displacement of anchorage influence on structurestress and deformation of suspension bridge, and find out the key factors that thestructural displacement of anchorage great impact on suspension bridge. Using theresults of the analysis and calculation, and summarized that under the condition of thesame anchorage structure displacement value, bottom of cable tower moment on theside that happened anchorage structural displacement is relatively largely affected; Inaddition, in the few parameters of the suspension bridge, different span ratio is themost sensitive factors to the anchorage structure displacement.The research,from Zhongxian Yangtze River bridge, finally expands to underdifferent parameters of suspension bridge,gets the preliminary conclusion of thesuspension bridge structure caused by the anchorage structure displacement,providing a positive reference significance of the suspension bridge anchorage structure for the future...