Seismic Response Analysis Of Steel-box Single-ribbed Tied Arch Bridge

The steel-box single-ribbed tied arch bridge is a new type of bridge in recent years, it is good mechanical properties, elegant appearance and novel structure, the structure has great development space on the bridge construction field. In this thesis, taking the Zhuanghe gangouzi bridge as an example, it is necessary for the single-ribbed tied arch bridge to study the seismic performance, the article uses the response spectrum and time history method to analyze the dynamic response of the bridge under the simple multi-point excitation support.The main research is described as follows:1,Some basic theories of certain seismic analysis are reviewed firstly in this paper, then some basic theories of the response spectrum and time history method are introduced, and the rules and differences of the seismic code in several foreign country are studied.2,Establish reasonable calculation model of bridge, and taking account of the seismic pile-soil-structure interaction and the pier consolidation,the differences of both of the dynamic properties are studied,at last the response spectrucm and time history method of arch bridge are analyzed, and both of the results are compared.3,Taking example for the project, several important parameters of the single-ribbed tied arch bridge,such as arch rib stiffness,the height of the pier and so on, are studied to analyze the influence of the dynamic properties, the change of the structure force and displacement in earthquake is studied, and some useful conclusions are drawn.