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Static Analysis and Construction Design of Suspend Keel-arch

Author: LiGang
Tutor: YuanFang
School: Tianjin University
Course: Structural Engineering
Keywords: suspend keel-arch nonlinear finite element method cellular element method computer simulation construction simulation
CLC: TU399
Type: Master's thesis
Year: 2007
Downloads: 29
Quote: 1
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Abstract


The application and prospects for the development of prestressed long-span steel structure are incomparably broad in recent years, with advantages of reasonable force flow, high rigidity, low weight and simple installation. Based on the realization of long-span structure and the principles of Suspend Dome and cable stayed bridge, this paper constructs a new kind of structure system——Suspend Keel-arch structure. It has also carried through static behavior analysis and the construction simulation analysis for the kind of structure.This paper gives a simple introduction about the concept and characteristics of prestressed spatial steel structure and makes some elaborations about suspend dome at the same time in order to construct a structure system which can cross a larger space on their basis. Some related knowledge of computer simulation is expatiated, which helps to establish the foundation for construction simulation.Cellular element methods based on the cellular automata are introduced. On the basis of finite element method and cellular element method, the structure static computation procedure is compiled with related knowledge of VBA.Taking space truss as basic component, this article construct one new kind of structure——suspend keel-arch according to certain combination way. Considered truss quantity may influence the structure performance probably, this paper constructs two models according to different ways. Then static analysis is carried on for the dome structure and the contrast analysis for two model force distribution situations has been made in this paper.This paper also makes some contrast analysis for different prestressed load plan to the structure behavior influence, discovering a comparatively rational construction order. This article has made detailed elaboration and analysis to the method of exerting pre-stress and the exerting order. The construction process is simulated for the improvement model with finite element procedure.

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