Theoretical Design And Numerical Simulation On Prefabricated Prestress Concrete Hollow Slab Bridge

The hollow board bridge of prestressing force is in a kind of configuration that little span bridge uses frequently, it is little that this kind bridge structure have building altitude , dead weight light, construction factory melt etc. advantage use for a long time do not decline. Board bridge structure not single external shape simple, and inside need not deploy specially normally to fight cut reinforcing bar, need to bend partial main tendons , so has simple construction, at the same time, shuttering and the project of reinforcing bar are also saved fairly , can accomplish modular design , are prefabricated , transportation , rise to hang , the advantages such as installation convenience. For higher level highway with city stand to hand over the work Cheng, the hollow board bridge of prestressing force again with is easy very much to satisfy oblique , bend , slope as well as the special requirements such as S shape and trumpet shape get pay attention highly.This kind of structure as well as the research present situation of the combination hollow board of this paper of prestressing force are being designed , the aspects such as construction the application condition of saving in Jilin have developed the research of some following aspects.According to its characteristic, development course and the classfication of the hollow board bridge of prestressing force as it summarizes , , has introduced the present hollow research of prestressing force of board bridge in the aspects such as theory and experiment with develop present situation.According to related theories such as structural design theory and bridge structural mechanics behavior of reinforced concrete, the design that has given the stress of the hollow board bridge of prestressing force and warps is theoretical to be the method with construction checking computation. At the same time combine actual project for prestressing force hollow harden Gou design calculation. Have carried out limited first value simulated calculation using ANSYS software for the hollow board bridge of prestressing force , and analyse for calculating result, have studied that the whole of board bridge get force state , and have carried out optimization for it, at the same time have analysed board bridge weak position Jiao seam get force state, have given to strengthen Jiao the reasonably improvement measure of seam position link level.According to above theoretical research, study for the hollow board bridge of prestressing force on construction process and construction optimization , have ensured reasonable construction technology to guarantee that the hollow board bridge of prestressing force has highest use and safety performance in using course in the future for accomplishment.