Design Research On Partially Anchored Arched Single Tower Curved Cable-stayed Bridge

Partially anchored arched single tower curved cable-stayed bridge is a new type structural system of cable-stayed bridge.It has the characteristics of novel structure and beautiful shape,And fully utilized the mechanical balance three relationships between kinds of eables tower and main beam,has the perfect expression of the mechanical aesthetic sense of the bridge structure.There are successful cases of partially anchored arched single tower curved cable-stayed bridge both at home and abroad.However,there are few related research,it does not systematically research the applicability of the structure system and the rationality of the structural parameters.In the light of Partially anchored arched single tower curved cable-stayed bridge,carried out the theoretical related research and numerical simulation,improving the theoretical research on the analysis of the single tower anchored cable-stayed bridge,has important practical significance and broad prospect of engineering application.This paper takes Chengdu Lu Lake Q7 bridge as the engineering background,use of finite element analysis as the research method,Research on Partially anchored arched single tower curved cable-stayed bridge,The main research work of this paper is as follows:(1)The design principles and key design points of the partially anchored arched single tower curved cable-stayed bridge are summarized,In order to achieve the purpose of guiding the design of similar bridges.(2)Take the actual project as an example.Through the finite element analysis method,the finite element calculation model of a partially anchored arch single tower curved cable-stayed bridge is established.Through calculation and analysis of internal force changes,Summarize the rules in it as the foundation of the research of similar bridges.(3)The finite element analysis of the partially anchored arched single tower curved cable-stayed bridge under the semi floating system and the tower beam consolidation system,the relative internal force changes under the two systems are compared.The law of internal force changes of the structure under different systems are analyzed.In order to guide the selection of different systems of the same kind of bridge.(4)According to the calculation and analysis of the key parts such as cable anchorage device,anchorage tunnel steel anchor ring and tower beam connection location,the laws of stress and deformation are obtained,so as to guide the design of such members.