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Analysis of Form Finding and Tensegrity Construction Simulation of Cable-membrane Roof Structures

Author: GengYanLi
Tutor: SunWenBo
School: South China University of Technology
Course: Structural Engineering
Keywords: Spoke tension cable car membrane structure Geometric nonlinearity Finite Element Method Tensioned construction simulation Jack unit
CLC: TU399
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
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Abstract


Spoke tension cable car styling resilient membrane structure, mechanical properties, and fully reflects the structure of the lightweight, high-strength and other characteristics, as a membrane structure is widely used in today's increasingly large span structures. Due to the current large-span structures increasing scale, complex construction, construction technology and reasonable structure forming installation program is the primary guarantee, while the structure after forming the stress state also has a direct impact. To ensure the safety of the construction process and the installation is complete and reliable structure, it is necessary for tensioning the whole construction process simulation analysis to pre-determine a reasonable construction scheme, effectively guide the actual tensioning construction process safety smoothly. Firstly, in a lot of reading relevant literature and summarize the work, based on nonlinear finite element theory, considering the weight of the structure, using the finite element software Strand7 spoke on the car structure was finding analysis. Looking-shaped structure on the basis of analysis of the nonlinear static calculation, the results meet the regulatory requirements, form-finding results verified the rationality and reliability of simulation analysis for the subsequent construction of the foundation. Subsequently, the paper introduces a more comprehensive tensioned cable membrane structure construction simulation analysis of the theoretical basis, and the existing tension cable membrane structure common construction methods and simulation methods are introduced. Analysis and discussion of positive anti-analysis principles and characteristics, comparisons of this car spoke tensioning structure construction simulation methods. Reference to the existing construction methods, this paper uses a radial tensioning cable method on the car spoke tensioning structure tensioned construction, the use of inverse analysis method of the whole construction process simulation. Analysis occurred during the convergence analysis of the issues and propose solutions. Construction forming process resulting geometry of the structure and variation of member forces and construction stages of control parameters. Finally, focusing on the construction of tensioned against the inadequacies of simulation based on the model Strand7 state in Cable unit into the jack unit to simulate the actual construction of the dragline, the tension on the radial cables in place to further the process of simulation analysis , results obtained with the actual rules and data match. Show Strand7 based platform jack unit back analysis method can improve the shortcomings, so that better tensioned cable membrane structure used in the construction of simulation analysis.

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