Steeltube Reinforced Concrete Arch Bridge Simulation Analysis During The Perfusion Constrution Stage

The concrete arched bridge of steel tube has been fast growing in our country in the past ten years,with the increase of the quantity,increasing constantly across foot-path and scale,distributed in the area wider and wider,except that the concrete arched bridge of steel tube is having a high,reason of the advantage convenient,handsome in appearance of construction of material intensity,in extensive loud environment of period of infrastructure construction of traffic there are close relations with our country.But up till now,except that a few research units have carried on the limited steel tube concrete arched bridge receive the overall performance of strength,laboratory model test of creeping etc.of bearing the weight of the strength,temperature stress,concrete terminally and outside the theory,most research is real bridge testing,proving test and analysis of finite element relying mainly on large-scale general program that are carried on to the concrete bridge,the performance of motive force is studied less.This make of our country steel tube concrete arched bridge employ,lack essential technology plan on a large scale,there is greater blindness in practical application.In actual application,also there is no design and operation technical specification comparatively unifying the complete steel tube concrete arched bridge at present,make the design and operation of the project have no chapter to follow,these may cause the quality problem and potential safety hazard to project and waste and leave.Especially the stability of the arched bridge in the course of pouring into construction,and under earthquake function coupling,the security of the arched bridge,still lack careful understanding and deep research.This text takes victorious bridge of Tongliao as an example,pouring into construction stage to this bridge one has carried on the optimization analysis which pours into the order,set up different construction finite element model of order, calculate every pour into order,joining rib stress,displacement,etc.of operating mode of different construction,has compared with electing the comparatively rational order of pouring into from it;Consider because arched bridge store installation error in,use material itself store defect in and toad the deviation of the point of application in construction etc,it is not in the ideal linear state to join the rib,so,in order to go still one step further to study the stability that the arched bridge is pouring into the course, this text non-linear geometry non-linear to consider material and material and geometry double non-linear factor analyze bucking to construction structure of arched bridge of course;We know our country is that an earthquake occur frequently in the area,the impact on structure of the bridge of earthquake function can't be ignored,study different stage of pouring into and earthquake function earthquake of arched bridge respond,can meet for construction by chance,happen suddenly state offer beneficial help in the course at the coupling,prevent trouble before it happens,so,this text tries to study and pours into the response of the arched bridge in earthquake function happens suddenly cases in the course,offer the reference basis for antidetonation of resisting shock of the construction course.