Force Characteristic Analysis And Experimental Investigation On Flying Swallow Type CFST Arch Bridge

The application of concrete-filled steel tube (CFST) structures to bridges has solved the problem of the development of the high-strength material of the arch bridge and problem of the non-bracket construction and the lightweight arch beam, therefore, the development of the arch bridge is infused with fresh vitality. In recent ten years, CFST arch bridge has gained a booming opportunity in our country, but there has no one code for design and construction of CFST arch bridge in our country and the study on dynamic performance of the structure gets relatively behind the study on static feature of the structures. In this article, taking the example of Eastern bridge, with the great general spatial finite element program–ANSYS, the linear elastic static and dynamic analysis of the flying swallow type CFST arch bridge is done, some useful conclusions are get.The following are the main work of the thesis:(1) Taking the example of Eastern bridge of Changzhou, the linear elastic and dynamic analysis of bridge is done through the loading test, evaluate the bridge normal usage function, contrast the model and the test result, find out the reason between them.(2) On the basis of dynamic spatial finite element theories, the Estern bridge model was build and the natural vibration characteristics was analyzed and calculated, at the same time, analyze the effects of natural vibration characteristics of the differences of structure parameters. Some factors, such as design parameters,bridge structure and material characteristics.(3) Taking the example of Eastern bridge, the stabilization of structure is analysed and gets the stabilization fator under different load case. At the same time, the influencing fators of the stabilization of the structure are briefly considered.