Analysis of the Cable Force Variation Law of Self-anchored Suspension Bridge of Large Span

Combining with the 1/30scale full-bridge model test of the Taohuayu Yellow River Bridge, establishing the test bridge finite element model and real bridge finite element model,the relevant research of the cable forces variation of the key cables for large span suspension bridges in the construction is carried out to clarify the cable force variation of the side and middle span slings,reveals the main source of bridge cable force,explains the influence of structure system transformation on the cable force change,verify the accuracy and rationality of the model test of the whole bridge,in order to provide reference for the future design and construction of the similar domestic and foreign bridge projects.