| Self-anchored suspension-cable-stayed combined structure system bridge is a kind of special bridge structural style,which bridge tower one side is self-anchored suspension system,other side is cable-stayed system,so it has both self-anchored suspension bridge and cable-stayed bridge characteristics.This kind of Combined structure system is a complicated structure,which give design and manufacture and construction to bring relatively large difficulty,especially in construction stage,which cable system present serious nonlinear. Based on existing research results and the relevant literature at home and abroad,which include the theory of suspension bridge,cable-stayed bridge,and non-linear structure,aiming at cable system of self-anchored Suspension-cable-stayed combined structure system bridge, which statics characteristic were studied on construction stage.Main research contents to be as follows:1.Based on structure analysis theory,using space model,by simplified and accurate analysis procedure of cable system,the linetypes of the cable on the final stageand initial stage are catculated,determining final cable curve,separate cable force,suspender force, stay-cable force and initial cable curve,and puting forward check-calculation method of cable system's stress amplitudea nd emergency capacity.2.By using the finite element,stress characteristics of self-anchored suspension-cable -stayed combined structure system Bridge is analysed,determining suspender reasonable stretching plan,then analysing statics characteristic of cable system,and determining mechanical change law of cable system on construction process.3.To take real bridge project for research object,combining with simulation analysis, dynamic monitoring method of real bridge cable curve and cable tension is proposed,then it has conducted comparative analysis of calculation results and measured results,which is verified effectiveness of monitoring method and reasonableness of analysis method.
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