The FEA Of Puguang Suspension Bridge In The Conditions Of Static Load, Pigging Load And Seismic Load

Pipeline suspension bridge is one of the main forms in the pipe-linetransportation. Pipeline suspension bridge, which is composed of major cable,anti-wind cable, towers, bridge truss (grid) and anchor, is the same of civilhighway and railway suspension bridge in the structure. But they also havedifference, such as the pipeline suspension bridge’s transport object ispetroleum or natural gas, and the rigidity of the pipeline suspension bridge issmaller than the highway and railway suspension, and what’s more thepipeline of pipeline suspension must be cleaned every once in a while, thepigging load is one of the characteristics of pipeline suspension bridge.On the basis of the research achievements in the literature and withPUGUANGHOUHE bridge as the object, a finite element model was built byANSYS software. Structural analysis in different conditions such as staticload, pigging load and seismic load were considered.Because of geometric nonlinear of suspension, how to get the exact cableshape of suspension bridge at cable finished stage is the key which can ensurethe successful construction of suspension bridge. This paper provides amethod that we can use the theme of optimized design of structure and thetool of optimized design of structure in the ANSYS to find the extract cableshape and the stress distribution of the cable. By analyzing the result which isfrom the method, the cable shape of suspension bridge at cable finished stagematches the shape got by numerical-analytical method in other researchachievements in the literature.When considering the structural in the conditions of pigging load, thetime-history analysis module of ANSYS was used to simulate the runningprocess of pigging ball in pipeline. Different stresses and displacements weregot when changed the speed of the pigging ball.When considering the structural in the conditions of seismic load, thetime-history analysis module of ANSYS was used to simulate seismic wave.By comparing the stresses and displacements results from one-way seismic wave and from three-way seismic wave, this paper summarized some ruleswhich could be ensure this type of bridge.