Research On Structural Design Technology And Stability Of Steep Curved Bridge

The paper is based on the bridge of Mingshanshuangguishan with steep slope.Establishment of Spatial Finite Element Model.The influence of temperature,vehicle load(including braking force and centrifugal force)on its force and displacement is discussed.The span of the bridge is discussed.The reasonable span of the bridge and reasonable part;and a comparative analysis of the support arrangement,the number of pier girder consolidation produce different stress and displacement,determine a reasonable number of pier girder consolidation and bearing arrangement,points out the adverse effects of the high pier bridge ring;in addition to the line segment the bridge overturning stability analysis.Results were as follows:1,The influence of temperature load,vehicle load(including centrifugal force and braking force)on the force and displacement of the Mingshanshuangguishan bridge is analyzed.2,Create a calculation model,the influence of bridge slope and pier height on the force and displacement of steep curved bridge is discussed.3,Taking the Mingshanshuangguishan Bridge with steep and steepness as an example,so this paper discusses the reasonable span arrangement and distribution of this kind of bridge:the conclusion is that the reasonable span is 20 m and the first joint is 5 × 20 m,the second joint is 3 × 20 m.4,In order to overcome the unfavorable anti-overturning of the bridge,the reasonable support layout of bridge bearing is also studied.It is concluded that the reasonable support layout of the bridge is such that,apart from the consolidation of the two pillars in the middle curve segment,full set of torsion support.5,In addition,the anti-overturning stability coefficient of the second joint(straight section)of the Mingshanshuangguishan bridge is also calculated.The anti-overturning stability parameters of the joint are obtained.