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Original scientific paper

On the equilibrium stability of a three-hinged frame

Riko Rosman

Fulltext: croatian, pdf (224 KB) pages 517-522 downloads: 1.005* cite
APA 6th Edition
Rosman, R. (2001). Stabilnost ravnoteže trozglobnog okvira. Građevinar, 53 (08.), 517-522. Retrieved from
MLA 8th Edition
Rosman, Riko. "Stabilnost ravnoteže trozglobnog okvira." Građevinar, vol. 53, no. 08., 2001, pp. 517-522. Accessed 22 Oct. 2020.
Chicago 17th Edition
Rosman, Riko. "Stabilnost ravnoteže trozglobnog okvira." Građevinar 53, no. 08. (2001): 517-522.
Rosman, R. (2001). 'Stabilnost ravnoteže trozglobnog okvira', Građevinar, 53(08.), pp. 517-522. Available at: (Accessed 22 October 2020)
Rosman R. Stabilnost ravnoteže trozglobnog okvira. Građevinar [Internet]. 2001 [cited 2020 October 22];53(08.):517-522. Available from:
R. Rosman, "Stabilnost ravnoteže trozglobnog okvira", Građevinar, vol.53, no. 08., pp. 517-522, 2001. [Online]. Available: [Accessed: 22 October 2020]

The equilibrium stability of the three-hinged frame with two-sided laterally rigid and two sided unilaterally elastic supports is analyzed taking into account a high value of deformation. The author demonstrates that very shallow systems cease to be stable because the top hinge penetrates below the level of support hinges, while in case of steep ones this is due to buckling of its members. Simple patterns are provided and a table of numerical values of the critical-load dimensionless coefficient are provided to enable practical use.

three-hinged frame stability; equilibrium; critical load; elastic support; member buckling

Hrčak ID: 12092



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