Analysis And Research Of Shear Lag Effect On Concrete Wide-box Girder Of Single Cable Plane Cable-stayed Bridge

On the basis of detailing the domestic and overseas present status of researches andmethods in Shear lag Effects of the bridge structure, summarizes some of the problemsthat currently exist about Shear Lag Effects, then studies the Shear Lag Effects on theconcrete wide-box girder of single cable plane cable-stayed bridge according to the actualproject. The main content of the article summarized as follows:Introduce the characteristics and development situation of concrete cable-stayedbridge, this thesis summarizes and compared the domestic and overseas present status ofresearches and methods about the Shear Lag Effects on concrete wide-box girder ofcable-stayed bridge.By comparing all of the existing analyzing methods of Shear Lag Effects, analysisthe common approach as variational method, bar simulation method, finite segmentmethod and so on, combined with multi-room box beam theory analysis of the statusquo,determine the energy variational method of theoretical analysis, and then use thespatial finite element method to verification. Box girder displacement function isconstructed in the moment and axial force, moment analysis in accordance with theparabola; also in axial force, for the longitudinal component of the fitting function madespecific analysis, Improve the practicality. This thesis expounds the standard consideredShear Lag Effects of many countries including PRC,The United States, Germany, Britishand Europe. And then describe the significance of the thesis.Comparative analysis some parameters about single cable plane concretecable-stayed bridge width box girder these parameters including the followings:comparative analysis of concrete cable-stayed bridge with double cable planes, width andspan ratio, distance to the cable tower may affect the Shear Lag Effects of concretewide-box girder of single cable plane cable-stayed bridge, cable force.