Static, Pigging And Seismic Analysis Of The Pipeline Suspension Bridge

Pipeline suspension bridge is one of the main forms in the pipe-line transportation, and is composed of major cables, anti-wind cables, towers, anchor foundations and pipeline bridge. The shape and dimension of the major cables and the anti-wind cables are changed with size, location and distribution of the load. In this paper, a finite element model for the analysis of the pipeline suspension bridge was set up with considering the initial internal force and verticality of the staying cable. Structural static analysis in different conditions was considered and stress and displacements were calculated for the major components of the pipeline suspension bridge. Natural frequency , modes and the bridge's dynamic performance in pigging operation were also obtained by performing dynamic analysis of the bridge.On the basis of the research achievements in the literature and with BaPanxia Bridge as the object, ANSYS structural analysis procedures and the spectral analysis theory are both used to calculate the seismic response .With the results, according to the features of BaPanxia Bridge, the suitable standard response spectrum curve and damping-modified formula and modified the response spectrum curve were chosen. Inputting the modified response spectrum curve along the longitudinal, transverse, vertical and multidimensional directions, the seismic responses of BaPanxia Bridge were anslysed and the results for two working conditions, i.e. damping-modified and unmodified, were compared detailly and some conclusions were arrived.Finally, the work in this paper is summarized and some conclusions about the study are drawn, and further more, the further research suggestions are given.