| In the recent years, the development of lattice shell is fast many types. Single-layer has the defect of low capacity, and it is designed by stability, economic indicator is low , it is confined by span, for large span structure , the single-layer is not applicable anymore; Double-deck lattice shell have some too many elements and nodes, and architectural effect is not ideal , what is more important is consumption of amounts of steel. Satisfy the need of large span, stability and save steel, author put forward new layout of ribs and cables on the basic of single-layer spherical lattice shell, prestressed cable single-layer spherical lattice shell. The structure which satisfying the need of stability and saving steel, gives full play to material performance and enhance the ultimate capacity, has economic benefit, which apply reference and guiding significance to engineering.The article attach important to the 110m's single-layer spherical lattice shell, and emphasize static, dynamic and stability of K6, K8 shell. Consider the effect of four types of ratio of high to span, two types layout of cable, four types of initial defects, two types of distributing loads and two types distributing ribs. Thorough the calculating comparison, put forward most optimized structural style, horizontal push force in the upper poles and moment in the lower poles has been deceased after exerting prestression, consequently have some characteristics, for instance, saving steel, cutting down own gravity, strong rigidity, good stability and so on, it can satisfy large span and save steel, which has evident economic benefits.To study many types of mechanic analysis of prestressed cable single-layer spherical lattice shell conveniently, ANSYS is exploited secondarily and carry out parameterization of build model, solve, post-preprocessor of prestressed single-layer spherical lattice shell, which bring much convenient to study.
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