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 OJCE  Vol.6 No.2 , March 2016
Tensile Structures of Cables Net, Guidelines to Design and Applications
Abstract: The structural engineering design of not conventional typologies imposes a complex path that begins evaluating procedures of a preliminary design and ends with complex procedures to validate the analysis response. Any guide lines to follow are often available. About complex shapes, in particular, any details are presented in the codes to evaluate wind action and so wind tunnel experiments are necessary to valuate this. The evaluation of wind tunnel data is a complex process that often needs new and specific subroutines programmed by researchers. The difficult increases when the objective is to study a not specific building but general aspects as for examples the dependence of a generic phenomenon by a geometric sample; in this case it is necessary to design and to program numerical subroutines before and then the wind tunnel experiments. Often, these subroutines are left detached and are non-generalizable process. Purpose of this paper is to describe a complete procedure to pre- and post-process wind tunnel data with the objective to design a not convectional structure as a tensile structure. In this particular case the research aim is a parametrization of the aerodynamic behavior of Hyperbolic Paraboloid roofs, shape used for cables net. The reason of the experiments is the absence in the international codes of the pressure coefficients for these geometries. The paper describes the numerical procedure evaluated to choose a sufficient representative geometric sample, the numerical procedure evaluated to design and to construct the wind tunnel models and FE models, the numerical procedure to evaluate and to use for FEM analyses of the wind tunnel data, the numerical procedure to calculate nonlinear structural analysis, and, finally some applications. All these numerical procedures use basic theory derived for example by the cable theory, the fluid mechanic, the nonlinear geometric analysis and other. However specific codes were necessary and were programmed to apply the theories on the specific case of study; the complete methodology followed is presented. The goal is to create a free open domain where the numerical procedures evaluated are merged, added, modified by researchers with the aim to obtain a common space of use for wind engineering of not conventional structure.
Cite this paper: Rizzo, F. (2016) Tensile Structures of Cables Net, Guidelines to Design and Applications. Open Journal of Civil Engineering, 6, 254-285. doi: 10.4236/ojce.2016.62023.
References

[1]   Rizzo, F. (2014) Aerodynamic of Tensile Structures. Silvana Editoriale, Milan.

[2]   Rizzo, F., D’Asdia, P., Lazzari, M. and Procino, L. (2011) Wind Action Evaluation on Tension Roofs of Hyperbolic Paraboloid Shape. Engineering Structures, 33, 445-461.
http://dx.doi.org/10.1016/j.engstruct.2010.11.001

[3]   Rizzo, F., D’Asdia, P., Ricciardelli, F. and Bartoli, G. (2012) Characterisation of Pressure Coefficients on Hyperbolic Paraboloid Roofs. Journal of Wind Engineering & Industrial Aerodynamics, 102, 61-71.
http://dx.doi.org/10.1016/j.jweia.2012.01.003

[4]   Rizzo, F. (2012) Wind Tunnel Tests on Hyperbolic Paraboloid Roofs with Elliptical Plane Shapes. Engineering Structures, 45, 536-558.
http://dx.doi.org/10.1016/j.engstruct.2012.06.049

[5]   Rizzo, F., D’Asdia, P. and Speziale, F. (2012) FEM Analysis of Tension Structures with Experimental Wind Action. The 2012 International Conference on Advances in Wind and Structures (AWAS’12), Seoul, 26-30 August 2012, 3373-3381.

[6]   Rizzo, F. and Sepe, V. (2015) Static Loads to Simulate Dynamic Effects of Wind on Hyperbolic Paraboloid Roofs with Square Plan. Journal of Wind Engineering & Industrial Aerodynamics, 137, 46-57.
http://dx.doi.org/10.1016/j.jweia.2014.11.012

[7]   Rizzo, F., D’Asdia, P. and Speziale, F. (2014) Design of Hyperbolic Paraboloid Roofs with Circular and Elliptical Plan Shape. 13th National Conference of Wind Engineering, Geneva, 22-25 June 2014.

[8]   Lewis, W.J. (2004) Tension Structures: Form and Behaviour. ASCE Standard.

[9]   Majowiecki, M. (2004) Tensostrutture: Progetto e Verifica. Edizioni Crea, Milano. (In Italian)

[10]   Melchers, R.E. (1987) Structural Reliability. Elley Horwood Ltd., UK.

[11]   ASCE (American Society of Civil Engineers) (2005) Minimum Design Loads for Buildings and Other Structures. ASCE 7-05.

[12]   Australian/New Zealand Standard (2002) Structural Design Actions; Part 2: Wind Actions. AS/NZS 1170.2:2002.

[13]   Borrough, P.A. (1986) Principles of Geographical Information Systems for Land Resources Assessment. Oxford University Press, Oxford. ESRI (1996) ArcView Spatial Analyst Manual (Ver. 3.0).

[14]   CNR (National Research Council of Italy) (2011) CNR-DT 207/2008—Guide for the Assessment of Wind Actions and Effects on Structures.

[15]   CEN (Comité Européen de Normalisation) (2005) EN 1991-1-4: Eurocode 1: Actions on Structures—Part 1-4: General Actions—Wind Actions.

[16]   Crisfield, M.A. (1991) Non-Linear Finite Element Analysis of Solids and Structures. Vol. 1, John Wiley & Sons, Hoboken.

[17]   Greville, T.N.E., Ed. (1969) Theory and Applications of Spline Functions. Proceedings of an Advanced Seminar, Madison, 7-9 October 1968, Academic Press, New York.

[18]   Smith, I.M. and Griffiths, D.V. (1982) Programming the Finite Element Method. John Wiley & Sons, Hoboken.

[19]   Cook, N.J. and Mayne, J.R. (1979) A Novel Working Approach to the Assessment of Wind Loads for Equivalent Static Design. Journal of Wind Engineering & Industrial Aerodynamics, 4, 149-164.
http://dx.doi.org/10.1016/0167-6105(79)90043-6

[20]   Cook, N.J. and Mayne, J.R. (1980) A Refined Working Approach to the Assessment of Wind Loads for Equivalent Static Design. Journal of Wind Engineering & Industrial Aerodynamics, 6, 125-137.
http://dx.doi.org/10.1016/0167-6105(80)90026-4

[21]   Elashkar, I. and Novak, M. (1983) Wind Tunnel Studies of CABLE ROOFS. Journal of Wind Engineering & Industrial Aerodynamics, 13, 407-419.
http://dx.doi.org/10.1016/0167-6105(83)90160-5

[22]   Gumbel, E.J. (1958) Statistic of Extremes. Columbia University Press, Columbia. Mayne, J.R. (1978) On Design Procedures for Wind Loading. Building Research Establishment, Garston.

[23]   Gumbel, E.J. (1958) Statistic of Extremes. Columbia University Press, Columbia. Lieblein J. (1974) Efficient Methods of Extreme Value Methodology. Report 74-602, National Bureau of Standards, Washington DC.

[24]   Shen, S. and Yang, Q. (1999) Wind-Induced Response Analysis and Wind-Resistant Design of Hyperbolic Paraboloid Cable Net Structures. International Journal of Space Structures, 14, 57-65.
http://dx.doi.org/10.1260/0266351991494696

[25]   Simiu, E. and Scanlan, R.H. (1986) Wind Effects on Structures. John Wiley & Sons, Hoboken.

 
 
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