Research Of Reasonable Finished Dead State And Reasonable Construction Reasonable Construction State Of A Cable-stayed Bridge With Single Inclined Tower And Hybrid Girder

Cable-stayed bridge is highly redundant complex structure, mainly by the dead load force control. The advantages of cable-stayed bridge is under the constant load power by adjusting the cables of the cable to improve the structure of the stress state. Reasonable determination of bridge condition is the key to cable-stayed bridge design calculations, a reasonable construction of the state of bridge monitoring is calculated to determine the main content.A reasonable status of the completed cable-stayed bridge include reasonable force state, and a reasonable linear state. When the structure size, material, load form is determined, a reasonable stress state depends on the structure of the cable tension. Rational bridge design longitudinal linear decision by the state. The reasonable linear state is decided by the design Vertical section. The reasonable construction state of cable bridge is a construction process in order to achieve reasonable Status of the bridge, the main problem is to calculate the construction phase of the cable tensile force and the main beam height.This paper focuses on cable-stayed bridge rational and reasonable construction of state to determine the state of the theme to work, to finite element analysis program as a platform to Ganzhou Dragon Island Bridge (single tower cable-stayed bridge asymmetric composite beam) as study, fully adjustable cable tension using this feature, detailing the state of cable-stayed bridge to determine a reasonable and rational method of determining the construction of the state and analyze the advantages and disadvantages of each method, calculation method proposed in this paper. Summary, this paper,has done the following work:1,Summarizes the characteristics of cable-stayed structure, development and mechanical characteristics, and proposed problems in this paper to solve2,Research the reasonable Status of the completed cable-stayed bridge.Include: a reasonable determination of the principles of bridge completion; reasonable steps in the calculation of cable force; zero displacement method, and the bending energy method, the stress influence matrix method and principle balance method of calculation; completion state of the optimization equation. 3,Based on the midas unknown load factor,I proposed a method of the reasonable Status of the completed cable-stayed bridge, as the load and structure defined circumstances, the method has been applied calculated Feilong-Island Bridge, defined the reasonable bridge cable force.4,Research the reasonable construction state theory of calculation.Include: calculation principles; to the demolition of law, no stress control method is loaded-to dismantle iterative method, iterative method of calculation is installed principle; the main beam height calculation principle.5,Proposed calculation method based on the construction is being installed state of practical calculations. Afater reseach the number of cable-stayed bridge during construction tension theory, developed tension Dragon Island Bridge, on the basis of the program, using this method, I calculate the reasonable construction and the main beam height Force of Feilong-Island Bridge.