Analysis Of Space Stress On Skew Continuous T Girder Bridge Transformed From Simple Supported System

With the development of economy and the rapid promotion of the technical levelof the highway bridge, for the large highway bridges,for example the high gradehighway and city overpass etc, the construction is demanded higher and higher. Weshould not only satisfy the requirement of the high speed smooth and comfortabledriving, but also reasonably to choice of bridge deck lines, considering various factorssuch as quality, economy and appearance, in the process of highway bridge construction,oblique bridge is more and more used in practical engineering. Inclined mechanicalcharacteristics different from right bridge, the bridge is slightly complicated, a lot ofplaces and oblique bridge in our country starts late, for many of the key issues inoblique bridge at home and abroad, also stay in a shallow level, on the basis of such asdesign theory, the mechanics characteristic, structure features and main points ofconstruction and other related problems need further in-depth study. Therefore, theanalysis and study of skew bridge is very important. This article through to the basictheoretical analysis and calculation method of skew girder bridge, combined with thefinite element grillage method, turn on the simply supported continuous construction ofinclined T bridge space mechanical characteristics analysis and research on thefollowing：1．For the skew girder bridge structure theory and calculation method is a morein-depth analysis. From the internal force influence factors of skew girder bridge,calculation method and to analyze the load transverse distribution, and the single spanand multi span skew beam structure under different supporting form produced by theinternal force and reaction made in this paper, the calculation method of skew girderbridge are summarized, which should be considered in the calculation of transversedistribution of the problem, can help us for the skew girder bridge overall grasp ofknowledge system. 2．Combined with the grillage theory, using Midas Civil2012to rely on theinclined T girder bridge in a continuous Liang Jianli finite element model into a state ofbridge, analysis of the structure internal force under different load conditions, andsummarizes the change rule of the force and displacement.3．Combining the theory of skew girder bridge and an engineering example, spacegrillage model establish multiple different angles. Without changing stiffness ratio ofbearing stiffness, bending and twisting and wide span than loudness parameters, loadeffect analysis of the impact of different structure internal force and displacement of theslope. Through data comparison, analysis under the action of dead load and supportingin the structure across the cross section of the internal force, bending moment, shearforce and the counterforce distribution rule.In this paper the stress of the inclined T girder bridge under different loadcondition rule and researches on the change of design parameters, the conclusion canprovide certain reference for the same type bridge design, and promote the skew bridgein the bridge engineering application and development.