Beam-Shell Compound Finite Strip for the Elastic Stability Analysis of Multi-Trough Rectangle Aquedcut

Abstract:

A mathematical model using the beam-shell compound finite strip method is established to study the elastic stability analysis of multi-trough rectangle aqueducts. The impacts of the transverse stiffeners and crossbars for the model are taken into account. The principle of minimum potential energy is used to deduce the eigenvalue equation for elastic stability problems. To verify the accuracy and efficiency of the beam-shell compound finite strip method, the numerical solution of the stability analysis for an actual aqueduct is calculated through the established model and other FEM methods. The result of the stability analysis for an actual aqueduct shows that: the buckling coefficient is reduced as the water level increasing while buckling mode remaining constant; and prestressed load has a great impact on not only the buckling coefficient but also buckling mode.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 1385-1390
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.1385
• Online since: December 2010
• Authors: Wei Xu, Liang Huang, Bo Wang
• Keywords: Aqueduct, Beam-Shell Compound Finite Strip, Stability, Transverse Stiffener

References

[1] Y.K. Cheung, J. Kong: Thin-Walled Structures Vol. 21 (1995), p.327.

[2] M.A. Bradford: Engineering Structures Vol. 18 (1996), p.193.

[3] M.A. Bradford, M. Azhari: Computers&Structures Vol. 56 (1995), p.75.

[4] W. Xu, B. Wang: Journal of Wuhan University of Technology Vol. 32 (2010), p.323 (In Chinese).

[5] B.F. Zhu: The Finite Element Method Theory and Application (China Water Power Press, Beijing 2004) (In Chinese).

[6] S.P. Timoshenko, J.M. Gere: Theory of Elastic Stability (McGraw Hill Book Company, New York 1970).