Study On Constuction Control Of Cable-stayed Bridge Without Backstays

Currently, Cable-stayed bridge which have made a significant contribution to thedevelopment of the socio-economic, is one of the most popular styles in China.Because of the high correlation between design and construction, the scientific andelaborated construction control system is being used to monitor in the whole processof the construction in order to the reasonable finial bridge state. With the increases ofthe span length and the complexity of the structural style, the research on theconstruction control technology of such structure is becoming more and moreimportant.This paper brefly introduce the development of a cable-stayed bridge, as well asthe status quo of the cable-stayed bridge construction control, then detailed introducemost of the contents, theory and methods in a cable-stayed bridge construction controlsystem. Including the idea of the cable-stayed construction control; focus on thestructure analysis and simulation of the cable-stayed bridge; including the method ofcalculating of the reasonable bridge’s state and constuction phase; elaborate on someof the major factors of the cable-stayed bridge construction control; the theory andmethods of the patameters’ identification and analysis of the errors in the cable-stayedbridge construction control.Then the finite element software, Midas/Civil, was used to establish the bridgesimulation model, according to the full-bridge finite element model,make a detailedanalysis of construction control of the simulation results. calculated the power of thecable in the raasonable state of the bridge.Processing on-site data collection, compared with theoretical data, the errors ofthe results were at a reasonable range.Finally, make a stability analysis of this bridge,obtained the diffierent modes ofinstability form,and verify stability factor of this bridge in the situation Whether ornot to meet specification requirements.