Analysis On The Influence Of Construction Uncertain Factors For The Single Tower Partially Earth-Anchored Cable-Stayed Bridge

Compared with self-anchored cable-stayed bridge,single tower partially earth-anchored cable-stayed bridge has better structural stability and stiffness of structure.However,partially earth-anchored cable-stayed bridge started late in our country,the researches on the kind of bridge and project examples are less,thus,it has certain significance to explore the construction and construction control.Taking a single tower anchored prestressed concrete cable-stayed bridge under construction as the project background,with the finite element analysis software,this article explores the influence of uncertain factors to cantilever construction and bridge engineering control.This paper elaborates the development and design feature of the cable-stayed bridge,including the partially earth-anchored cable-stayed bridge.Then,introduces the theory and method of bridge engineering control,and describes the development and current situation of bridge engineering control.In the exploration of the influence factors on the bridge,this paper analyzes the influence of natural factors and human factors mostly.About human factors,this paper studies the influence of cable-stayed cracking,the pouring of concrete section,hanging basket dropping and temporary loads to the bridge structure.About natural factors,this paper discusses the temperature factor and wind factor.This paper explores the response of this bridge to the temperature,what's more,considering the different temperature in construction period,analyzes the bridge structure.Then,this paper explores the static response of the structure under different wind speeds.Though the above analysis,this paper gets some relevant conclusions.These conclusions could help the bridge construction and construction control,provide a certain reference value for the construction and construction control of the partially earth-anchored cable-stayed bridge in the future.