Construction Control & Research For Hybrid Girder Cable-Stayed Bridge With Single Pylon And Single Cable Plane

Single Tower Cable Stayed Bridge surface is a hybrid girder of the last century began to emerge in the 1970 s new bridge structure,its beautiful shape,the structure of the force balance and other features make this type of cable-stayed bridge has been widely used,Especially in urban bridge structure type is particularly popular.But its construction process complexity,difficulty controlling more so for such a study bridge construction control is especially necessary.In this paper Xiamen Maxin Bridge in the background of the project,main contents include:From the static equilibrium effects single tower cable for cable-stayed bridge bearing system are classified,depending on the structural characteristics of the studied mechanical properties of single tower cable-stayed bridge under different loading systems.Midas Civil establish dimensional finite element model of the bridge structure by finite element software,come to stress,displacement changes in each condition of the bridge structure.By determining the mixing Stayed Bridge girder bridge into reasonable condition,according to the forward iteration method to determine a reasonable initial tension and the secondary transfer cable force values.The calculation results of finite element software MIDAS Civil results with finite element software BSAS be checked,comparing two different finite element calculations and accuracy,and determines the final cable force is reasonable.By the second tune cable tension and elevation measured by theory contrast cord after the completion of the value of the cable force and precise construction elevation control to ensure the accuracy and cable-stayed bridge tension line fluency.Through the construction control theory analysis of the indicators and comparative analysis of the experimental results show,for the medium and small span steel-concrete composite beam cable-stayed bridge construction monitoring,beam element finite element model has sufficient accuracy,the calculation results can be used to guide the construction,and can achieve better results.Determine the mixed beam Stayed Bridge vibration die state and overall buckling mode dynamic characteristics analysis.