The Design of Small Rise-span Ratio Deck Concrete-filled Steel Tube Space Truss Arch Bridge
In order to solve the problems of complex struc-tural stress and large thrust at arch foot of concrete-filled steel tube landscape arch bridge with small rise-span ratio,the design of a deck concrete-filled steel tube arch bridge with a net span of 80 m and a net rise-span ratio of 1/8 is analyzed in this paper.The structural measures of adopting spatial four-tube truss section arch ribs and light spandrel structure are put forward.Finally,the static analysis of the whole bridge structure during construction and operation stage is carried out by using the general finite element program.The results show that the application of these structural measures can effectively improve the bearing capacity and stability of the arch ring,and the bridge deck system is reduced by 63.4%.The design of small rise-span ratio concrete-filled steel tube landscape arch bridge meets the requirements of relevant specifications.
NETL
NSTL
万方数据
