Study On The Influence Of Transverse Mechanical Properties Of Steel-Concrete Composite Beams

In recent years,with the rapid development of China’s comprehensive national strength and economic strength,higher requirements have been put forward for the construction of roads and bridges in China.China needs to vigorously develop basic infrastructure.Bridges,as an important part of highway,railway and urban construction,have naturally become an important part of urban development.Steel-concrete composite beam bridges have the characteristics of high strength and light weight,and can play their respective advantages when subjected to force,so they are widely used in bridge construction.Considering the safety and reliability of the structure,the calculation of the transverse distribution coefficient of the composite beam has also become an important task in bridge design.Based on the theory of transverse distribution coefficient calculation,this paper takes steel-concrete composite beam bridge as the basis and uses ANSYS finite element software for numerical simulation.The main research contents are as follows:1.Elaborate on the research significance of the topic,introduce the current research status of damage and lateral load distribution of steel-concrete composite beam bridges at home and abroad after sliding,and explore the manifestation forms of bridge damage and sliding.2.Based on theoretical analysis,analyze the calculation process of lateral distribution coefficient under different calculation methods,and the scope of application of each calculation method.3.Using ANSYS software,analyze the degree of influence of changing the span,plate thickness,number of main beams,and shear connector strength of steel-concrete composite beam bridges on the strength of the transverse distribution coefficient,and analyze the variation law of the transverse distribution coefficient of steel-concrete composite beam bridges.4.Based on the theory of rigid beam connection,a mechanical analytical model that can consider the effect of damage and slip between the bridge deck and steel beam on the lateral distribution coefficient of steel-concrete is established.The change of lateral distribution coefficient of steel-concrete composite beam bridge when comparing damaged and undamaged composite beams is analyzed.The change of lateral distribution coefficient of bridge when considering the slip of steel-concrete composite beam bridge is also analyzed.