文档介绍：Journal of Constructional Steel Research 61 (2005) 786–807
ate/jcsr
Wind pressures and buckling of cylindrical steel
tanks with a conical roof
G. Portelaa,,∗
aDepartment of General Engineering, University of Puerto Rico, Mayagüez 00681-9044, Puerto Rico
bCivil Infrastructure Research Center, Department of Civil Engineering and Surveying, University of
Puerto Rico, Mayagüez 00681-9041, Puerto Rico
Received 5 July 2004; accepted 19 November 2004
Abstract
Tanks with a conical roof are studied in this paper under wind load, for a roof which is supported
by rafters and columns. Buckling occurs in the formofdeflections in the cylindrical shell and the
buckling mode is localized in the windward region. Both bifurcation analysis and geometrically
nonlinear analysis have been performed using finite element discretizations of the structure. The
wind pressures have been obtained from wind tunnel experiments performed as part of the research,
and have been obtained for tank geometries for which information was not previously available. The
results show high imperfection sensitivity of tanks with a conical roof, and buckling loads for wind
velocities in the same order as those expected to occur in the Caribbean region.
© 2004 Elsevier Ltd. All rights reserved.
Keywords: Buckling; Conical roof; Finite element analysis; Imperfections; Steel tanks; Wind pressures; Wind
tunnel
∗
Corresponding address: Department of Civil Engineering, University of Puerto Rico, Mayagüez Campus,
006819041 Mayagüez, Puerto Rico. Tel.: +1787 265 3815; fax: +1787 833 8260.
E-mail addresses: ******@ (G. Portela), ******@ (. Godoy).
0143-974X/$ - see front matter © 2004 Elsevier Ltd. All rights reserved.
doi:.
G. Portela, . Godoy / Journal of Constructional Steel Research 61 (2005) 786–807 787
1. Introduction
This paper addresses the problem of buckling of thin-walled steel tanks with a conical
roof, pares