Study On High-Pier Stability Under Influence Of Temperature And Uprightness

Recent years, large-span and continuum-firm bridge with high-pier has been growing up rapidly with the development of transportation enterprise. The problem of stability of bridge becomes more and more important with the increase of its span and pier height.Now,for the stability analysis of large-span and continuum-firm bridge with high-pier, whatever the theoretics or computational analysis is not comprehensive. This paper summarize the used stability theory and analysis large-span and continuum-firm bridge with high-pier stability influence factors on base of considering the actual project factors,put forward the sampling and modeling of the temperature field,in conclusion give the result of influence of the temperature and uprightness for high-pier. And give an effective method for uprightness control.By installing temperature sensor inside pier and measuring outside pier, sampling the actual temperature data. Utilizing the ANSYS program modeling the temperature field of the high-pier, analyzing and computing the internal force and distortion under temperature load. The actual and computing result are almost same so the method is proved exact. At the same time, considering the temperature and uprightness, utilizing the ANSYS program,use nonlinearity flection analysis method analyzing the stability of the bridge under influence of the temperature and uprightness and give a conclusion that for the stability analysis the nonlinearity must be considered. In addition, by the project of Hong Ling bridge design a method for uprightness control and be proved exact by using in construction.