| Concrete -filled steel tubular arch bridge has been soon applied and developed in our country in recent years, and now has come in long-spans and nearly competed in very long spans for five hundred, used in bridge construct project not only in the locations where bridges crossing rivers but also crossing seas. It demands to go deep into theoretic research for the type of bridge in theoretic of designing, structural static performance, structural dynamic performance, security, durability and authenticity.The paper detailedly introduced the essential capability of concrete -filled steel tube and the structure of concrete -filled steel tubular arch bridge, based on which the paper also go into particulars the method and steps of designation and calculation of concrete -filled steel tubular arch bridge. The paper processed whole analyse of bridge structure by applying bridge structure analytic software, and then emphasized spacial stress in foot of arch by used spacial finite element software. Through referring related documents and data of built bridge present code of bridge designation concrete -filled steel tubular arch bridge ,the author made a summary of main parameters necessary to design of these bridges, realizing static performance of concrete -filled steel tubular arch bridge and offering to designation and construction to refer.Through analysis and study on the dumbbell section of concrete -filled steel tubular arch bridge, The paper introduced the structure of concrete -filled steel tubular arch bridge on designation and calculation and made a summary of experience in structure design by ANSYS, supporting for promoting the extensive research and to build the kind of bridge in our country in the future. |
