The Under-loading Analysis And Controlling During The Construction For The CFST

In the construction of bridge, Arch-Bridge of Concrete Filled Steel Tubular Bridge often adopt the means of using cable to suspend without bracket. The linetype of the structure of arch rib is difficult to control during construction. The thesis discuss the principle and means of controlling the linetype of CFST bridge in the construction and establish mechanics mode to carry out controlling calculation on the foundation of the stabilization, stress,deformation of the bridge in detail basing on expatiating the analysis of internal force and controlling factors, offering change rules of parameter of different construction phases on the basis of which optimizing the process of loading in order to optimize the level of stress The series of construction means put forward in the thesis are proved to be right and reasonable and can be economical, efficient in the premise of good quality in the practice of HeYang JiaLing river bridge in HeChuan. The series of construction means have important coach effect on the construction of CFST bridge.