Accurate Simulation Of Cable System In Construction Process Of The Suspension Bridge

The main bearing structure of suspension bridge is main cable.Because of great spanning capacity, good anti-seismic performance, economic and reasonable, light and beautiful, suspension bridge become the first bridge of large span Bridges. As main bearing component of suspension bridge,main cable has the characteristics of strong geometric nonlinearity which is the biggest difficulty in the calculation of suspension bridge. The cable system of suspension Bridges must be accurately simulated in order to make the state of suspension bridge can achieve reasonable completion of the bridge.The research work and achievements this paper has done are mainly in several aspects:(1) This paper mainly summarizes the long development history of suspension bridges which including the suspension bridges in China and other foreign countries. This paper also summarizes the development history of suspension Bridges in structural calculation and construction methods. The main components of suspension bridges and structure features and functions are also be described.(2) The method of static analysis of suspension bridges are discussed which mainly introduces the analysis method of the suspension bridge under vertical load.It is the most important part in the design and calculation of suspension bridge. This paper introduces each kind of method applicable scope, assumptions and calculation theory and points out their advantages and disadvantages in calculation.(3) This paper study the main cable system geometric nonlinearity of suspension bridges. The influence of nonlinear factors in the analysis of suspension Bridges are discussed.The different causes of the geometric nonlinear analysis methods are also discussed. Based on the finite displacement theory of finite element analysis method, the simulation of main cable unit mainly include linear units and curved shape units.(4) In order to doing accurate simulation of the suspension bridge main cable system this paper summarizes the existing calculation method of main cable system. On the accurate simulation of the main cable system this paper calculates the main cable shape and the suspension bridge cable saddle of partial quantity calculation.(5) This paper discusses the characteristics of anchor span of suspension Bridges.Based on the characteristics of anchor span the geometrical parameters is discussed.