Overall Design of Baitanhu Lake Bridge

Given the demands of landscape effect of city bridges,the design scheme of a(150+150)m concrete single pylon cable-stayed bridge that is symmetrically arranged in the longitudinal direction is chosen for the main bridge of Baitanhu Lake Bridge.The pylon which is basically an arch is designed as an elliptic arched pylon structure.The main girder is the prestressed concrete three-cell single box structure with inclined webs.The sidewalk is arranged along the outer side of the anchorage zone of the stay cables.The stay cables are fanned out in spatial double cable planes,which are anchored to the main girder via concrete teeth,but anchored to the pylon with the assistance of concrete blocks and bulkheads.The transitional piers are vase-shaped plate piers.The pylon is constructed by climbing formwork and the pylon cross beam is cast in segments with a 2mlong closure section.The main girder is cast in segments on scaffoldings and a total of 13 construction segments are made.The results of the finite element calculation indicate that the force conditions of the structure can meet the code requirements.