Structural Design and Analysis of Aluminum Dome for Caofeidian Coal Storage

摘要

The upper part of Caofeidian coal-storage dome is an aluminum shell with an approximately hemispherical shape, which is covered with aluminum alloys plate. The capsule is made of aluminum alloys material, and its span is 125 meters. In the design, according to TEMCOR joint, the finite element software MIDAS was used to create accurate geometry and analysis models of aluminum alloys single layer latticed dome structures. By considering the combination of dead loads, live loads, snow load, wind load, temperature effect and other working conditions, we summarized the material consumption of the structures and also studied the structural internal force, deformation and stiffness. In addition, seismic dynamic loads in two different directions X and Y were applied to the structure. The structural seismic performance under two modes was studied through the structural mode analysis of the vibration frequency. The single layer dome was controlled by the stability. The three-dimensional frame element model was set up in ANSYS, and the eigenvalue buckling analysis was carried out. With the geometrical nonlinear finite element method, the stability coefficient and the weak parts of the structure were obtained considering initial imperfections and material nonlinear.