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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

ANALYSIS OF FOLDING PATTERNS TYPICAL FOR MEMBRANE STRUCTURES WITH INTERNAL SUPPORTS

Vestnik MGSU 11/2012
  • Kondrashov Kirill Nikolaevich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Metal Structures, Moscow State University of Civil Engineering (MGSU), Off. 407 ULK, 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Tusnin Alesandr Romanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Chair, Department of Metal Structures, +7(495)287-49-14, ext. 3053, Moscow State University of Civil Engineering (MGSU), Off. 407 ULK, 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 67 - 73

The nature of the stress-strain state of membrane structures is highly dependent on the initial
strain. The article contains an analysis of the folding pattern under the weight of the cover, depending
on the number and location of internal supports. The authors have analyzed the two alternative
layouts of supports. In the first case, the option of one (central) support is considered; in the second
case, the cover is based on vertical load-bearing structures located in four points at equal distances
from the ends of the block.
Numerical calculations performed by Lyra 9.4 software have identified that the biggest deflection
of the membrane occurs in its central part.
We can conclude that the most intensive folding originates from the edges of support struts.
A qualitative assessment of the results of numerical calculations was performed using the testing
model of the membrane cover. Conclusions about the distribution of initial strains over the structure
and assessment of their influence on the stress-strain state of the membrane unit were made.
A qualitative picture of the deformation was obtained using the numerical simulation and its comparison
with the experimental results.

DOI: 10.22227/1997-0935.2012.11.67 - 73

References
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  6. Braslavskiy B.M. Pryamougol’naya membrana s deformiruemym opornym konturom [Rectangular Membrane with a Deformable Support Frame]. Visyachie pokrytiya [Hanging Covers]. Trudy NIZhB [Works of Scientific and Research Institute of Reinforced Concrete]. Moscow, Stroyizdat Publ., 1973, no. 6, pp. 25—30.
  7. Grigor’ev A.S., Shadrin V.A. O ravnovesii kvadratnoy membrany pri bol’shikh progibakh [Equilibrium of a Square Membrane in the Event of Substantial Defl ections]. Issledovanie po teorii sooruzheniy [Research into the Structural Theory]. Moscow, Stroyizdat Publ., 1980, no. 24, pp. 115—120.
  8. Kiselev B.E. O napryazhennom i deformirovannom sostoyanii ploskikh ograzhdayushchikh konstruktsiy iz metallicheskikh lent [The Stress-strained State of Flat Envelope Structures Made of Metal Strips]. Stroitel’naya mekhanika i raschet sooruzheniy [Structural Mechanics and Analysis of Structures]. 1972, no. 6, pp. 14—19.
  9. Lenskiy V.V. Eksperimental’noe issledovanie shatrovogo pokrytiya v vide tonkolistovoy membrannoy obolochki. Prostranstvennaya rabota konstruktsiy promyshlennykh zdaniy i inzhenernykh sooruzheniy [Experimental Study of the Tent Cover Sheet That Represents a Thin Membrane Shell. 3D Performance of Constructions of Industrial Buildings and Engineering Structures]. Lenpromstroyproekt publ., Leningrad, 1981, no. 2, pp. 74—85.
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