Stability Analysis For A Single-Layer Cylindrical Latticed Domes Of An Airport Building

Space latticed dome is a type of structural system whose major character is three-dimensional shape and three-dimensional loaded. The rationally loaded character, great stiffness, lightweight, low fabrication cost, novel and lively pattern, beauty and great expression art measuring are features of this type of structure. Therefore the latticed domes are widely used abroad and home.Total trend in development of latticed domes is that the span of latticed dome becomes more and more large, as well as the material used becomes more and more economic with the development of building materials, computer technique and structural theory. So, the stability is the key problem on the structural design of latticed domes. Only by the load-displacement nonlinear analysis during the whole process of the structure, the stability capability of the single-layer unite latticed domes can be estimated correctly. Therefore, based on the nonlinear whole process analysis of structure, the paper studies on the stability capability of cylindrical latticed domes.Based on FEM analysis software ANSYS, a cylindrical latticed dome of an aerodrome is analyzed as an example. The progress of load-displacement for the whole structure-- cylindrical latticed dome & columns is record. The influence of geometric nonlinear to the structures'stability is discussed, and the response of the structures with initial imperfection is analyzed by the consistent modal method. The characteristic of endogenetic force of the cylindrical latticed domes and some advice for the design are offered in the conclusion.