Continuous Oblique Beam Bridge Structural Forces Analysis Of The Influencing Factors

With the development of traffic, High-grade highways, urban roads and construction of interchange hub continuous helical beam bridge has been widely used. For skew bridge focused on the analysis of simple supported skew beam bridge, less continuous research skew bridge, so it is necessary to the continuous internal forces skew bridge features an in-depth analysis. Under dead load gradient ranging from continuous helical beam bridge internal force characteristics more in-depth analysis, continuous test skew bridge No.0at the station at supporting a slope of30°, the slope of the rest of the support at all for15°. The ABAQUS were established0°,15°,30°,45°and60°in the same span continuous helical beam bridge, comparative analysis under dead load inclination on the continuous oblique beam bridge internal force and continuous helical beam test bridge model comparison analysis ranging from slope continuous helical beam bridge internal force characteristics, draw bending moment and support reaction force distribution law. By changing the test oblique beam bridge slope difference and span ratio analysis to changes in internal forces ranging gradient skew bridge, at the same time, the analysis of the effect of bearing stiffness of continuous oblique girder bridge main research work includes the following four aspects:(1)A profiled continuous oblique girder bridge upper structure based on the actual situation, which works out schemes for field test and on-site test construction loads of internal force of the beam and the cross section deformation condition.(2)Based on the ABAQUS finite element software platform establish the bridge upper structure3d simulation model. The finite element model proving ground measured values were compared to data is good.(3)Analysis of different slope continuous the oblique box girder bending moment and support reaction force distribution obtained influence of inclination on the continuous oblique beam bridge.(4) Comparative analysis of the test skew bridge with slope of15and30consecutive oblique beam bridge bending moment and support reaction force distribution, reaching ranging slope continuous helical beam bridge internal force distribution law changing the test skew bridges lope difference between the span ratio of internal forces of change has been continuous skew bridge, analysis bearing rigidity and beams thickness continuous oblique beam bridge internal force influence.