文档介绍：Journal of Constructional Steel Research 61 (2005) 808–824
ate/jcsr
Wind pressures and buckling of cylindrical steel
tanks with a dome 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
An putational strategy is used in this paper to evaluate the buckling behavior
of steel tanks with a dome roof under exposure to wind. First, wind tunnel experiments using small
scale rigid models were carried out, from which pressure distributions due to wind on the cylindrical
part and on the roof were obtained. Second, putational model of the structure (using the
pressures obtained in the experiments) was used to evaluate buckling loads and modes and to study
the imperfection sensitivity of the tanks. putational tools used were bifurcation buckling
analysis (eigenvalue analysis) and geometrical nonlinear analysis (step-by-step incremental analysis).
Geometric imperfections and changes in the buckling results due to reductions in the thickness were
also included in the study to investigate reductions in the buckling strength of the shell. For the
geometries considered, the results show low imperfection sensitivity of the tanks and buckling loads
associated with wind speeds 45% higher than those specified by the ASCE 7-02 standard.
© 2004 Elsevier Ltd. All rights reserved.
Keywords: Buckling; Dome roof; Finite element analysis; Imperfections; Steel tanks; Wind pressures; Wind
tunnel
∗
Corresponding author. 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 Constr