Numerical Analysis Of Transverse Creep Of Curved Girder Bridge Under Radial Force

Because the curved girder bridge has been put into operation, there are various kinds of diseases, especially in the most serious transverse climbing. Large lateral displacement of the bridge often lead to bridge bearing shear failure, pier ring to cracking and other secondary diseases. So, not only poses a threat to the safety of the operation of the bridge, also seriously affected the service life of the bridge. Therefore, to study the mechanism of the curved girder bridge transverse climbing move, effectively control the main girder of lateral move to climb, become urgent problems today. Existing research shows that the radial force of curved girder bridge during operation received is the main reason for the bridge transverse shift. But the radial force of beam transverse crawled moving mechanism and the lateral creeping motion of the beam under the action of radial force has no definite conclusion, needs further research.This article, according to the transverse climbing problem of the curved girder bridge under the action of radial force, the finite element model is established by the finite element software ANSYS., and analyzed the transverse climbing motion of the beam. The main research contents of this paper are as follows:(1)By consulting the relevant data, the paper summarizes the achievements and research status of the research on the transverse movement of the curved girder bridge, and points out the deficiency of the research on the transverse movement of the curved girder bridge under the action of radial force.(2)Discussed the important parameters and methods of ANSYS finite element analysis, focus around the base of the simulation, calculation of radial force time history expand analysis research, and then putted forward the methods that basin type rubber bearing equivalent to three different stiffness springs and established the finite element simulation model of laminated rubber bearing, and the accuracy is verified by an example.(3)Based on the elastic history analysis of ANSYS, a series of simulation calculations are carried out for the girder under the action of the radial force obtained by in does not consider the vehicle bridge coupling effect, considering the coupling effect, obtained the dynamic response of the whole bridge under the action of radial force, and analyzed the displacement time history curve of the key section of the beam and the time history curve of the support force. And compared and analyzed the girder climb trend on different situation, summarized the main beam under the action of radial force crawling rules. At the same time, the influence of the dynamic load effect on the main girder is analyzed, and some important conclusions are obtained.(4)Selected the girder creep state when considered dynamic effect of vehicle, calculated and analyzed girder restoring force of girder in the condition of the residual displacement when considered concrete creep and shrinkage effect, getted the key sections of the girder of the recovery force changes in the value, and the calculation results are compared and analyzed, summarized the concrete shrinkage and creep of the girder recovery force.(5)Through analysised the action of girder creep numerical simulation under the radial force, and the crawling rules of the beam under the action of radial force is presented in this paper; and the research prospect, of which still needs to be improved and further research problems are summarized.Hope that through this article research, will be able to have certain value and significance to the development of curved girder bridge, and contribute to the curved girder bridge’s safety operation.