Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reflections on the behaviour of reinforced concrete shells
AbstractMethods for the analysis of shell structures took a major step forward with the development of the finite element method. The advantages of the method lie in its ability to handle realistic support conditions including isolated column supports, edge beams placed eccentric to the shell surface, and thickness changes that may be present in the surface. There are some omissions and incompatibilities in the interaction of the shell with its edge beams. For some problems the choice of element has a significant impact upon the quality of the results.Shell structures achieve a substantial contribution to their strength from geometry. An important material characteristic of concrete is its ageing viscoelastic behaviour. This produces a change in geometry associated with the creep deflections. These changes in geometry can actually cause a change in the failure load for some shallow shells. One example for which this projected behaviour appears to have occurred to a hyperbolic paraboloidal shell which experienced a complete failure a number of years after completion. Nonlinear finite element techniques can be used to investigate load capacity of these shells.
Reflections on the behaviour of reinforced concrete shells
AbstractMethods for the analysis of shell structures took a major step forward with the development of the finite element method. The advantages of the method lie in its ability to handle realistic support conditions including isolated column supports, edge beams placed eccentric to the shell surface, and thickness changes that may be present in the surface. There are some omissions and incompatibilities in the interaction of the shell with its edge beams. For some problems the choice of element has a significant impact upon the quality of the results.Shell structures achieve a substantial contribution to their strength from geometry. An important material characteristic of concrete is its ageing viscoelastic behaviour. This produces a change in geometry associated with the creep deflections. These changes in geometry can actually cause a change in the failure load for some shallow shells. One example for which this projected behaviour appears to have occurred to a hyperbolic paraboloidal shell which experienced a complete failure a number of years after completion. Nonlinear finite element techniques can be used to investigate load capacity of these shells.
Reflections on the behaviour of reinforced concrete shells
Schnobrich, W.C. (Autor:in)
Engineering Structures ; 13 ; 199-210
01.01.1991
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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