Research On The Construction Controlling Technology Of The Reinforced Concrete Arch Bridge Usedhanging Basket Cantilever-casting Method

Currently, the cantilever casting method as a new bridge construction tech-niques used in the construction process, which overcomes the deficiencies unfa-vorable terrain, making the bridge can be cast as a phased construction like a cable-stayed bridge and continuous rigid frame, with investment relatively less convenient construction, structural integrity, and less post-maintenance, easy ma-intenanceadvantages. For the the development of China western regions arch o-pened upbroad prospects. As the cantilever casting method is seldom used in the country,the process is not yet mature, and therefore establish a reasonable constructioncontrol system to ensure the safety of the construction process of the cantileverbridge, a bridge alignment and internal forces can meet the design requirements is particularly important.Based on the existing domestic and international data collection and research,and the results, around the existence of the subject, the following research:①In order to ensure the safety of large-span cantilever pouring concrete arch bridge construction process and into linear and internal forces to meet the design requirements, proposed the establishment of the construction process to adaptits control system construction;②In summary abroad bridge construction control system based on the principle of the cantilever construction method is given control system established withthe task of construction control purposes and to establish how to build construction control system; and Panzhihua New Midi Bridge, for example, the establishment of relevant construction control system;③Bridges designed using software Midas/Civil establish full bridge finiteelement model, considering the shrinkage and creep of concrete on construction control process simulation calculations, given the state of the control objectives are expected to bridge displacements and internal forces, etc.; the largest cantileverarch stage, weight and wind stability of the structure have been studied in windload drawn little effect on the stability of arch；④The key issues raised during the construction boom pouring impact of the construction of the control target, Cradle pouring cantilever bridge constructionas the main load-bearing equipment, Cradle of stiffness and safety is an issue during walking bridge built more concerned about the process, but also affect the linear arch an important factor, the paper Ansys software construction process ofthe main load-bearing equipment Cradle be counted seized stiffness, and walkingsystem Cradle rollover resistance checking, to ensure the safety of the construction process; summary cable force optimization method, to the construction processclaims based on reasonable tone, and to explore methods arch bridge closed after cable force removal and other issues, analyze and summarize the corresponding；⑤Cantilever pouring construction process of the main relevant parameters sensitivity analysis, several parameters are given a greater impact in the design stage and construction control should be given attention, after using this method forthe construction of the bridge to provide a reference.