Simulation Analysis Of Long Span Arch Bridges

It has been nearly more than 100 years since the construction of long span arch bridges. It is only 133 years before the first long span arch bridge constructed namely the Eads bridge in American Missouri which was a steel truss rib arch bridge with span of 153m+ 158m+153m and erected by cantilever method. Therefore the theory of long span arch bridges is not ripe regardless of designing,simulation analysis and construction. Basing on this background and according to author's experiences, this paper summarized some questions about simulation analysis and put forward author's views and improvement method about some questions.Author summarized the development of arch bridge first and pointed out a direction of development of arch bridge in the future, next author summarized the development of theory of construction control of long span bridges and research situation in the world in the first chapter of this paper. Finally author put forward the contents of research in this paper according to open questiones.In the second chapter of this article, author analyzed the long span arch bridges theoretically and put forward the deflection equation of arch bridge under the Uniformly-distributed Load and the formula of force of tie-rod of tied arch bridge. After that, combining with FEM, author summarized the methods of static analysis of arch bridge in order to put a foundation for simulation analysis.Combining with FEM software—ANSYS, author discussed the methods of making model of arch bridge first and some detail questions in the third chapter. For example, author put forward some views on simulation of curved pre-stressed concrete and simulation of pull force of tied bar and concise way to solve the influence line. In the fourth chapter of the paper, combining with three projects which is Zhongzhaiwan bridge and Wushi road bridge in Xiamen and South Kangfu road bridge in Yiyang, author analyzed the ultimate bearing capacity of long span arch bridges and the influenced factors of arch bridge and the stress of non-linear temperature, except that author analyzed the properties of shrinkage and creep of South Kangfu Road bridge with the data of experiment of Maocaojie CFST bridge. Through above-mentioned analysis, author acquired some significance conclusions.In the last chapter, author proposed some unsolved questions. It is high time for development of simulation analysis of long span arch bridges in the future.