The Global And Local Analysis Of Hybrid Girder Cable-stayed Bridge

With the continuous progress and growth of the cable-stayed bridge construction,hybrid girder cable-stayed bridge with its good mechanical properties and ascendanteconomic characteristics to attract the attention of more and more bridge designers.Firstly, a brief introduction of the development at home and abroad as well as thestructure force characteristics for the hybrid girder cable-stayed bridge,then states andanalysis the hybrid girder bridge from overall&local structure, also introduced relatedtheory of dynamic characteristics of the bridge structure.The papers based on the design of a hybrid girder cable-stayed bridge at Chaohu asengineering background, Establish full bridge spatial finite element model to analyzethe bridge in different construction stages of the stress and deformation conditions. Atthe same time, A brief analysis about the stress of the cable-stayed bridge underdifferent loads at the operation stages. On the basis of static analysis to built the wholebridge finite element model, perfect to get the analysis model of the dynamic calculationof the bridge.Then calculated and analyzed the dynamic characteristics of the hybridgirder cable-stayed bridge, including the analysis of natural vibration frequency andresponse spectrum method. The paper further using ANSYS finite element software,combing steel-mixed local finite element model, Then can calculation and analysis ofsteel-mixed combination and distribution of changeover portion under the mostunfavorable loads condition during the operation stage. Verify the security andrationality of steel-mixed joint section design. Thesis research has certain guidingsignificance on the design and construction of the same kind of bridge monitoring.