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Stability Behavior Analysis and Application of Suspen-Dome

Author: ChenXiaoPei
Tutor: FanFeng
School: Harbin Institute of Technology
Course: Structural Engineering
Keywords: Suspendome structure Stability Ultimate load Buckling Parametric analysis
CLC: TU399
Type: Master's thesis
Year: 2007
Downloads: 211
Quote: 7
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Abstract


Suspendome structure is based on single-layer spherical shell and tensegrity structure, a new hybrid spatial structure system, which effectively improved the upper shell structure stability, improve the overall stiffness of the structure, while reducing construction difficulty, the application prospect. In recent years, along with some small success SUSPENDOME structural design, domestic and foreign scholars suspendome structural design and construction technology has carried out some research work, but for suspendome structural stability, especially considering the double Nonlinear effects ultimate bearing capacity of the structure of the upper shell stability degree of improvement, as well as multi-parameter change on the stability of the impact, the study is not very systematic and comprehensive enough, the lack of systematic research. Therefore, the system carried out suspendome plastic stability behavior of the structure for this type of structure is very widely used in practical value. Based on these ideas, using finite element analysis software ANSYS and ABAQUS, combined with self before and after processing, mastered the use of two software ANSYS and ABAQUS combining suspendome double nonlinear structural analysis of practical methods, and through a large numerical example groping for the program part of the calculation coefficient gives recommendations to facilitate the analysis of convergence of empirical values. On this basis, through suspendome structure typical example for the whole process of elastic-plastic analysis conducted suspendome mastered double nonlinear structural analysis process, and the structure and the same geometrical parameters of single-layer spherical shell the stability of a careful comparative analysis for elastoplastic stability of such structures have a preliminary understanding, the structural parameters of the system for subsequent analysis laid analysis of ideas and theoretical basis. This paper focuses on the 40m and 60m span suspendome launched a massive structural parameters of the system analysis, and seek the suspendome structural limit load and buckling mode, the system examines the span ratio, pole height, cable The initial prestressing ring Sorbian way home, load distribution patterns and initial geometric imperfections and other important factors on the structural stability performance. By analyzing a large number of parameters, more comprehensive grasp suspendome structure stability, and get some quantitative and qualitative results of the analysis, design engineers can provide an effective design basis. This article also uses suspen shell structure, Yingkou City Olympic competition hall for the conduct of a conventional roof structure design, focusing on the rationalization of the structure of the program in the form of comparative analysis and some geometry parameter selection, made a number of suitable critical nodes in the form of such works for the engineering design of such structures and practices designed to provide some valuable suggestions.

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