Advanced Steel Construction

Vol. 7, No. 4, pp. 344-358 (2011)


RESEARCH ON DISTRIBUTION AND MAGNITUDE OF INITIAL GEOMETRICAL IMPERFECTION AFFECTING STABILITY OF SUSPEN-DOME

 

Jiamin Guo

College of Ocean Environment and Engineering, Shanghai Maritime University, Shanghai 200135, China

(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. )

Received: 17 February 2011; Revised: 22 March 2011; Accepted: 24 March 2011

 

DOI:10.18057/IJASC.2011.7.4.3

 

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ABSTRACT

Stability calculation is the main content during analysis of suspen-dome. To ensure the analysis results, with consideration initial geometrical imperfection, estimate structural stability reliably, looking for the worst distribution and magnitude of initial geometrical imperfection during stability calculation is the focus in this paper. First, a single-layer latticed shell and three types of suspen-domes are selected to study the influence of initial geometrical imperfection distribution on their overall stability by consistent imperfection mode method. Then, the influence of initial geometrical imperfection magnitude on structural stability was studied by the same method. Using calculation results from above numerical models, different distribution of initial geometrical imperfection, which is adopted during stability calculation, is listed, and the load-displacement curves which can reflect structural overall stability are drawn. Results show that the stability factor is lower when the first antisymmetric buckling mode is adopted as initial geometrical imperfection distribution and its magnitude lays between 1/500 and 1/300 structural span, and structural stiffness is also lower. The conclusions derived from the paper are applicable to similar practical structure.

 

KEYWORDS

Suspen-dome, Initial geometrical imperfection, Buckling modes, Stability, Aberrance structure, Structural stiffness


REFERENCES

[1].      Shen, S.Z. and Chen, X., “Stability of Lattice Shell Structures”, Science Press of China, 1999.

[2].      Kawaguchi, M. and Abe, M. and Tatemichi, I., “Design, Test, and Realization of "Suspend-Dome" System”, Journal of IASS, 1999, Vol. 40, No. 131, pp. 179-192.

[3].      Kang, W.J. and Chen, Z.H. and Lam, H.F. etal, “Analysis and Design of the General and Outmost-ring Stiffened Suspen-dome Structures”, Engineering Structures, 2003, Vol. 25, No. 13, pp. 1685-1695.

[4].      Kitipornchai, S. and Kang, W.J. and Lam, H.F. etal, “Factors Affecting the Design and Construction of Lamella Suspen-dome Systems”, Journal of Constructional Steel Research”, 2005, Vol. 61, No. 61, pp. 764–785.

[5].      Guo, J.M. and Dong, S.L. and Yuan, X.F., “Morphological Analysis of Suspend-dome Structures and Its Practical Analysis Method”, China civil engineering journal, 2009, Vol. 41, No. 12, pp.1-7. (in Chinese)

[6].      Zhang, Z.H. and Cao, Q.S. and Dong, S.L. etal, “Structural Design of a Practical Suspen-dome”, Advanced Steel construction, 2008, Vol. 4, No. 4, pp. 323–340.

[7].      Luo, B. and Guo, Z.X. and Feng, Y. etal, “Stability Research on Elliptic Paraboloid Suspen-dome of Changzhou Municipal Gymnasium”, Journal of Building Structures, 2009, Vol. 30, No. 6, pp.148-154. (in Chinese)

[8].      Ge, J.Q. and Zhang, G.J. and Wang, S.T. etal. “The Overall Stability Analysis of the Suspend-dome Structure System of the Badminton Gymnasium for 2008 Olympic Games”, Journal of Building Structures, 2007, Vol. 28, No. 6, pp.22-30. (in Chinese)

[9].      JGJ 61-2003, “Technical Specification for Latticed Shells”, China Architecture & Building Press, Beijing, 2003. (in Chinese).

[10].    Zhang, A.L. and Zhang, X.F. and Ge, J.Q. etal. “The Research about Influence of Initial Geometrical Imperfection in Badminton Arena for 2008 Olympic Games Suspendome Stability Analysis” ,Spatial Structures, 2006, Vol. 12, No. 4, pp.8-12. (in Chinese)

[11].    Arbocz, J. and Hol, J.M.A.M., “Koiter’s Stability Theory in a Computer-aided Engineering (CAE) Environment”, Int. J. Solids Struct, 1990, Vol. 26, No. 9, pp.945–973.

[12].    Zhu, E.C. and Guan, Z.W. and Rodd, P.D., etal, “Buckling of Oriented Strand Board Webbed Wood I-Joists”, 2005, Vol. 131, No. 10, pp.1629-1636.

[13].    ANSYS Users Manual Revision 6.1, ANSYS, INC.,Inc,.Canonsburg, Pennsylvania,2002.