The passing dam building of Xiangjiaba water conservancy project adopts gear-rack climbing vertical structure. The structure demands highly on the deformation compatibility of relative displacement between tower and nut column, and rack and guide. If it is constructed poorly, it will directly influence the ship lifts running and construction period. The paper takes this as its key research object. 3D FEM is used to analyze the tower structure, mainly calculating the deformation of the tower under the temperature, weight, wind load and other loads in a normal single case and combination cases. By focusing on the theory analysis of the important parts such as nut column, rack and guide, the structures deformation fitness, this paper offers a fair theoretical reference and technological guidance to the construction of every part of the tower.

To study the effect of transverse stiffness on the mechanical behavior of reinforced concrete rigid-frame arch bridge, an integral model was set up by using the spatial finite element analysis software, four different spans rigid frame arch bridges were analyzed and the influence of transverse load distribution coefficients on different deck stiffness was studied. Compared with the results of deflection method, it shows that the transverse load distribution coefficient calculated by elastically supported continuous beam method is smaller; also, the transverse stiffness is directly related to the magnitude of transverse load distribution of the bridge and a serious difference of the forces calculated with traditional design theory, which should be modified in the design.