Curve Of Continuous Steel Box Girder Bridge Resistive Overturning Stability Analysis Of The Research As A Whole

Along with the national city construction enterprise rapid development,more and more application of curve continuous steel bridges are in municipal engineering.At the same time,there are a lot of overturning accidents,which bring great economic loss to the country.The Suzhou high tech Zone Yushan road viaduct,on the basis of the existing research,on the basis of theory and overturning coefficient of overturning stability as the evaluation criteria,the Suzhou high tech Zone Yushan Road Viaduct curve continuous steel bridge has carried on the theory of stress analysis and finite element analysis were compared with test data and the real bridge,comprehensively analyzes the problem of anti overturning the whole curve continuous steel box girder bridge,the main factors affecting the curve continuous steel bridge of anti overturning and design advice.The following results are obtained in this paper:(1)The use of finite element model simulation in six kinds of moving vehicle loads under the corresponding force and overturning coefficient,by comparing the size of them find out the most unfavorable loading conditions for mode five(live load of 2 Lane loading).(2)Curve continuous steel box girder bridge in the operation side of vertical force,relative pier bearing force of value is smaller,about 1/5,said that the pier bearing most easily void,in the design of the bridge,should be paid more attention.(3)With the decrease of the curvature radius of the Pier 1,2,3 force difference is increasing,therefore,the decrease of the curvature radius of the bearing force,the safe operation of the bridge,the minimum radius of curvature of the safe operation of the bridge was 92 meters.(4)The increase of the support distance of the side support is beneficial to the stability of the structure,and the maximum support spacing of the bridge is 6.3m.(5)Compared with the other two kinds of load deflection method,the inner spacing 2.15 m and the external 3.15 m are more conducive to the stability of the structure.(6)Within the distance of 2.15 m remained unchanged,only the side span along the center line of bearing outer support to offset will increase the side bearing force and anti overturning ability).(7)To change the layout of the side support,the overall anti overturning performance of the structure is improved.(8)In the side of the bridge pier in the side of the fulcrum of the pressure,not only it can increase the bearing capacity of the reaction,but also improve the overall performance of the anti overturning.