Determination of prestressing levels for cable trusses as a function of their stability

Građevinar

article

Ljubomir Vlajić¹  Dragan Kostić²  Mirko Aćić³ 

[1] University of Novi Sad Faculty of Civil Engineering in Subotica;University of Nis Faculty of Civil Engineering and Architecture;University of Belgrade Faculty of Civil Engineering

关键词: stability;    stiffness;    cable trusses;    vibrations caused by wind;    eigen and forced oscillations;   

DOI  :  10.14256/JCE.863.2013

学科分类：社会科学、人文和艺术（综合）

来源: Hrvatsko Drustvo Gradevinskih Inzenjera

【 摘 要 】

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.

【 授权许可】

CC BY