Study The Behavior Of Steel-concrete Composite Beam Cable-stayed Bridge

The cable-stayed bridge is a major structural forms of modern long-span bridges. It hasexcellent spanning capacity, good economy, ease construction, stand out in the competitionamong the large span bridges. Steel-concrete composite beam cable-stayed bridge is animportant form of cable-stayed bridge. It make up the lack of steel box girder cable-stayedbridge by project cost and Steel deck pavement durability. By spanning capacity andeconomics of large-span bridges, steel-concrete composite beam is better than concrete beam.Jiuzhou Channel Bridge is an important part of the Hong Kong-Zhuhai-Macao Bridgeproject. The bridge located the Lingdingyang waters southwest across the Jiuzhou PortChannel. Jiuzhou Channel Bridge is twin towers single cable plane steel-concrete compositebeam cable-stayed bridge, the main span set the single-hole two-way shipping, the bridgespan is (85+127.5+268+127.5+85) m, the total length is693m. The main bridge is locatedon the vertical curve of radius R=14500m, Main span deck standard width is36.8m, besidesof the main tower it gradient to33.1m. Deck located2.5%cross slope. Jiuzhou ChannelBridge belong to tower-beam-pier consolidation system. The main beam is separate openingssteel box+concrete bridge deck. The main tower steel-concrete structure with "Sail" shape. Ithas beautiful landscape. The Cable has harp-shaped arrangement,the cable spacing on beam is12.5m, on tower is6.1m.Use three-dimensional finite element analysis program Midas Civil computational tools toestablish the spatial three-dimensional model of the Jiuzhou Channel Bridge. Determine steelconcrete composite beam cable-stayed bridge reasonable overall constraction. Make staticforce analysis, Calculated selfweight, second dead loads, car, shrinkage and creep,temperature and other internal forces and displacements. Find steel-concrete composite beamcable-stayed bridge, structural features and internal forces, deformation variation. Calculatethe response of the cable-stayed bridge along the bridge of Lateral and vertical seismic action,and in three directions under total response. Analysis the effect of isolation bearing in Steeland Concrete Composite Cable-Stayed Bridge.