Analysis And Research Of Compound Structure Combining Suspend Arch Truss And Single-layer Reticulated Shell

Nowadays individuals require more on the large span structure function. Space structures step into the florescent period with various advantages like modeling diversity, large inner space, reasonable load transfer, satisfactory global stability, enormous space stiffness, good seismic resistance capacity. Among tons of space structures, reticulated shell is one of the main structural forms. It owns the reticulated shell characteristics of simple connecting, as well as the thin shell structure property of reasonable load transfer. Compared with the accustomed single-layer reticulated shells, Tianshan Rice Cube reticulated shell roof adopts compound structures which combines the single-layer reticulated shell and suspend arch truss together. It is ellipsoidal with long axis 200 meters and short axis 140 meters. It is 30 meters high and four concrete filled steel tube columns were set at the spot 20 meters and 30 meters away from the medial axis. Four well-shaped intersected arch truss were arranged. Cables were set at the arch foot and the structure between arch trusses is single-layer reticulated shell. Considered the load characteristics, the advantage of the single-layer reticulated shell and suspend arch truss combine together to construct a reasonable structure system.The structural design requirement was considered. Three structural schemes are compared among arch structure, compound structure combining suspend arch truss and single-layer reticulated shell and double layer shell. Compound structure was the final choice. The glass curtain wall was analyzed and the basic static and dynamic behavior was gained.According to the boundary conditions of this structure, load condition and other basic design information and the corresponding design principle, in ANSYS analysis software and Midas analysis software based on the finite element model of the whole, the corresponding section of stems can be chosen.To establish finite element model, according to the corresponding load conditions, the more detailed analysis of the static has been completed. Through to the corresponding load condition combination, the structure of the counteracting force, stem a stress and deformation amount to carry on the analysis, we can understand the structure of the static response. The research of static stability was done. Complete the eigenvalue buckling analysis, the initial defects on the influence of the structure stability was considered. And then the structure with geometrical nonlinearity analysis in the whole process, in the selection of the representative nodes are whole process tracking, and draw the conclusion that loaddeflection curves and stability coefficient to evaluate the structure stability is good or not.The analysis of the engineering anti-seismic performance was done. First this paper introduced the Lanczos method which was used to calculation the structural self-vibration characteristics and vibration shapes-separation-spectra-method which was used to calculation the earthquake action. Competed the analysis of the structural self-vibration and the earthquake action with the corresponding method, the evaluation and suggestions can be proposed for the seismic design.The analysis of the influence of the temperature difference between the structure which sets glass partition is done, and the details of this structure of nodes are checked the design. Setting the representative temperature difference according to season, we can realize the influence of the temperature difference to the structural performance. For the part of the structure of details nodes, according to the corresponding standards and the situation of internal checking the design, it can be made to meet the engineering requirement.