The influence of initial geometric imperfections on the buckling load of single and double curvature concrete shells
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2012-02Publisher
Elsevier ScienceBibliographic Citation
TOMÁS ESPÍN, Antonio, TOVAR PEÑARANDA, Juan Pedro. The influence of initial geometric imperfections on the buckling load of single and double curvature concrete shells. En Computers and Structures, 2012, nº 96-97 p. 34-45. ISSN 0045-7949Keywords
Imperfection sensitivity factorBuckling
Concrete shells
Abstract
Several traditional methods are available to address the problem of instability in concrete shells, usually by means of curves representing the influence of the initial geometric imperfections in the buckling load
for simple geometries (spheres and cylinders). Although some revisions of these methods have been made, new curves for other geometries have not been stated. In this study, the imperfection sensitivity
factor in shell structures with different geometries (spherical dome, barrel vault, and double-curvature ruled surface) is determined graphically. This graphical method is useful to the designer in the early
stages of the design of shell structures when dimensioning.
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