Continuous Girder Bridge Jacking Demolition Of Construction Process Simulation Analysis And Construction Control Study

Pusher is biggest characteristic as the construction process, construction structure, thecoordinates of boundary support condition and the corresponding structure internal force,deformation, etc are constantly changing.This dissertation is based on the open highwayBuddha beijiang bridge jacking construction demolition as engineering background, theconstruction of prestressed concrete continuous girder bridge by jacking method inconstruction process simulation analysis and construction monitoring. Aiming at thischaracteristic, this article USES the finite element method, the realization of jackingconstruction process simulation effectively, and influence the jacking construction steelguide beam alignment and stress distribution is calculated. Aiming at this characteristic, thisarticle USES the finite element method, the realization of jacking construction processsimulation effectively, and influence the jacking construction steel guide beam alignmentand stress distribution is calculated. In addition, the steel guide beam in constructionmonitoring of pusher demolition method, guarantee continuous beam in the process ofpushing dismantle remain the design requirements within the scope of linear and strainedcondition.First of all, this article summarizes the origin and development of pushing theconstruction and the construction characteristics and the application and existing problemsin the continuous girder bridge demolition process. Expounds the Buddha to open highwayof beijiang bridge pusher demolition of construction process is given priority to with linearcontrol method of main girder, stress control is complementary control principle.Secondly, the paper introduces in detail the Buddha open highway of beijiang bridgejacking to dismantle the whole method and the whole process, and USES the bridgeanalysis software Midas Civil professional dismantling of2010of beijiang bridgeconstruction process simulation, analyzed the main girder internal force, stress anddisplacement of dynamic change in the process of construction, provide theoretical data forconstruction control. Finally, based on structure calculation and analysis of linear, bridge constructionmonitoring is to construction of the main link and process monitoring and control, on thebasis of the structural calculation and linear analysis, ensure security of structure during theprocess of construction state, and according to the actual structure of the state, to use avariety of testing and monitoring means to obtain the data tracking correction calculation,given the subsequent feedback data of each construction stage structure, used to guide andcontrol the construction process. Of beijiang bridge jacking demolition of constructionprocess for the timely and effective monitoring and control structure of the stress state, notonly can avoid the unsafe factors in the process of construction, but also can provide thebasis for assessment of structure safety and construction safety, the pusher type bridgedemolition of construction simulation and construction control to provide certain referencevalue.