Analysis Of Cable-stayed Bridge And Local Key Parts In Synchronous Construction Of Pylon And Beam

The cable-stayed bridge is an indeterminate structure with high degrees and thestructure analysis of the cable-stayed bridge is very complicated．The constructionmethodis closely related to the internal forces and deformation of the bridge．Thesynchronous construction technology of beam and pylon is different from thetraditional technology that the main pylon construction before the main beamsconstruction. Cantilever Construction on the girder segment begins while theconstruction of the main pylon is still on. The Synchronous construction technologyof beam and pylon has many outstanding features,such as a short work cycle,goodeconomic returns and so on.On the project background of Kangbo cable-stayed bridge in Sichuan,establishedthe full-bridge finite element model by the software of MIDAS and the local key partsfinite element model by the software of ANSYS ,based on the reasonable design stateof cable forces determined by the minimum bending energy method,analysis of thefull-bridge behaviors under the action of the permanent load,live load,temperatureload and so on. Further study on the stress distribution of the local key parts andexperiment study on full-scale model of anchorage zone in pylon of cable-stayedbridge,all shows that the synchronous construction technology of beam and pylon issafe and reliable.