Construction Characteristics And Control Technology Of Concrete Cable-Stayed Bridges With Removable Frame

Construction of long span cable-stayed bridge main beam commonly usedcantilever pouring method and cantilever erection method, however, small andmedium span bridge clearance is relatively low, flat riverbed lots, taking intoaccount the difficulty of construction and engineering cost and other reasons,mobile bracketsitu method has become the preferred solution. Construction andcontrol of the bridge workers on long-span cable-stayed bridge has been veryfull, small bracket situ of the small and medium span cable-stayed bridgeconstruction technology and control, low precision of the number of bridges inclose, as the bridge alignment ideal, the cable force, uneven force structure toachieve the desired into a bridge. Therefore, it is necessary to cast-in-placetechnology and control technology for small and medium span cable-stayedbridge mobile frame.In this paper, the Geng Cun Dou Bridge for the background on thetechnical characteristics of concrete cable-stayed bridge mobile bracketconstruction and related technical measures. Detailed analysis of thecharacteristics of the concrete cable-stayed bridge mobile frame construction technology, foundation treatment, bracket, pre-pressure and other technicalmeasures, given bracket calculation, formwork elevation determined.Detail the control of cable-stayed bridge construction, combined with thethe Geng Cun Dou bridge construction program characteristics, use the bridgefinite element analysis software bridges Dr. v3.03, the Midas/Civil to establisha bridge simulation model and determine construction procedures and methods.By theoretical calculations with the measured data compared to verify thefeasibility of the method of construction control, to ensure that the main bridgestructure in the construction process, the force and deformation is always in theexpected range, and into a bridge after the main beam alignment and structure ofthe force to meet the design requirements.The paper solve the problems in the mobile frame cast-in-place cable-stayed bridge construction, can provide experience and guidance for a similarcable-stayed bridge construction.