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Vol. 37 (1996) No. 3 December n. 122


Experimental investigations of large span complex structures

< Table of Contents for Vol. 37 (1996) No. 3 December n. 122
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 37 (1996) No. 3 December n. 122
  • Title: Experimental investigations of large span complex structures
  • Author(s): Ü. A.Tärno, O. V.Shevtshenko
  • Keywords: experimental analysis, physical models, shells
Abstract
The architecture of the large span buildings changes from day to day. In purpose of diversifying both space and plane, thinwalled and framed structures may be used together combining them experiently. Combinations of positive and negative double curvature shells turn out to be especially interesting. The former may be both of square and rectangular plan, added near standing structures are of rectangular or triangular plan. There are used the experiences and traditions of the professor Heinrich Laul scientific school (TTU, Tallinn, Estonia) for the investigations of the very large span (D>120m) shell structures. To enable to study space structures with real edge conditions and additional influences form suporting elements fiberglass plastic geometrical scale models have been made and tested. For practical purposes, complex spatial structures were investigated: 1) pentagonal hanging roofs, 2) pentagonal quasidomes, 3) complex shells consisting of 12 panels, 4) ribbed folded plate structures consisting of 14 sections 5) ribbed folded plate on four spatial columns, 6) complex roof from flat shell, hypars, and supporting cables. The test were carried out in real, artificial, and accidental situations. On the basis of the experimental data the investigated complex structure can be divided to the supporting and covering parts. The latter takes part in the load carrying processes only with the help of the supporting elements.

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