Građevinar, Vol. 65 No. 12., 2013.
Stručni rad
https://doi.org/10.14256/JCE.863.2013
Determination of prestressing levels for cable trusses as a function of their stability
Mirko Aćić
; Sveučilište u Beogradu, Građevinski fakultet
Ljubomir M. Vlajić
; Sveučilište u Subotici, Građevinski fakultet
Dragan Kostić
; Sveučilište u Nišu, Građevinski fakultet
Sažetak
The stability of prestressed cable trusses subjected to static and dynamic loads is analysed in the paper. The stiffness of the elastic cable truss system was varied by changing the prestressing force. Modelling results for different levels of tension show that, in terms of satisfying dynamic resistance conditions, a much greater tensile force is required for cable grids with diagonal members, compared to those with vertical rods. The conclusions derived constitute recommendations for the use of calculation methods, as well as for the determination of prestressing forces under which stability criteria are fulfilled.
Ključne riječi
cable trusses; stability; stiffness; vibrations caused by wind; eigen and forced oscillations
Hrčak ID:
113055
URI
Datum izdavanja:
10.1.2014.
Posjeta: 2.382 *