Structure Stress Analysis Of Long Span Curve Rigid Frame Bridge

Along with our country the rapid development of the high-grade highway,Large span curve rigid frame bridge construction in China has been booming developed,it has also made great progress, yet, at present a large number of studies have focused mainly on the straight bridge, there are still many problems to be solved urgently, In this paper, rely on the Ba Yang No.1bridge as the engineering background, The use of large finite element software, on high pier, long-span, Curve Rigid Frame Bridge by static performance and analysis of shear lag effect. The main contents and results are as follows:â‘ Summary of the curve bridge development history and current situation, introduced the curve rigid frame bridge with commonly used analysis theory and differential equations.â‘¡Study of different curvature radius of curve rigid frame bridge construction state and operation state of the bridge under the influence of elastic stability.The results show that:with the increases gradually, wind load effect on the stability is not obvious.â‘¢Establishment of Ba Yang No.1bridge space finite element model of the bridge.into the state,studied different curvature radius of curve rigid frame bridge with high pier, different static performance, the result showed that:the main girder of the torque and the out-of-plane moment and pier out-of-plane moment along with the increase of the radius of curvature are gradually reduced, increasing the height of piers on the main girder in plane bending and torsion effect is not obvious, but the main girder and pier moment bending moment decrease.â‘£Using the finite element method on BaYang No.1bridge shear lag effect analysis, calculation of box beam each control section of the transverse shear lag coefficient and the extension direction of each section of the bridge longitudinal shear lag coefficient. Summary of single cell box curved continuous box girder shear lag effect of the horizontal and vertical distribution characters. Further research the curvature radius and width to span ratio on the shear lag effect of specific effect.