Stability Analysis Of The Scaffold With Cableway Erection

As one of the most ancient form of bridge structure in China,arch bridges were widely used in various types of highway and railway bridges. Concrete-filled steel tube arch bridge modelling beautiful, economical and practical, has developed greatly.Nowadays,the concrete-filled steel tube arch bridge use erection woth cableway for construction. the stability of hoisting tower have high requirements for this method.There are a lot of ways in concrete filled steel tubular arch bridge construction,the most common way is erection cableway which no stents cable hoisting system method for lifting the stability of the arch rib of the tower is very demanding. Based on consulting the literatures in China and abroad,the paper established finite element model to simulate and calculate the several factors influenced the stability of the scaffold. Respectively from the angle of the scaffold setting back line, lateral line set the Angle of the wind, constraint form at the bottom of the tower, tower height, the twin towers of different forms of assembling, study the influence of above factors on the stability of bailey beam and tower, look for patterns in order to enhance the stability, and this kind of scaffold construction provides certain reference for the application in the future.Finally, the paper use Laos Nam Ngum hydropower station downstream bridge as the engineering example, combined with the established finite element model, the calculated results, the analysis of the structure before and after optimization, the stress and stability coefficient of the maximal displacement and stability after contrast optimize, meet the specification requirements, to meet the requirements of construction to ensure the stability of the. To prove the validity of the factors influencing law analysis.This article will be to the cable hoisting construction method of a certain degree of reference for the design and construction.