Cfst Truss Arch Calculation Mode

On the basis of relative researches in the world, the hooping theory of CFST was deduced by use of energy principle and minimum potatial energy principle, moreover, use modified axial elastic modulus of steel tube and core concrete in order to reckon in the increase of CFST load-carrying capacity. Based on this, this paper put forwards a simplified calculate mode of the CFST truss arch bridge ? the isometric box-arch calculate method, and which was analyzed comparatively combined with the traditional calculate mode(rigid frame calculate mode and truss calculate mode ) by use of the real bridge data .As a result, we conclude that the method 梩he isometric box arch calculate method which brought forward in this paper in static analysis is veritable~ reliable and the means is simple. Otherwise, the temperature internal forces of the CFST truss arch bridge were also studied and deduced in this paper.