期刊
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
卷 79, 期 -, 页码 226-241出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jcsr.2012.07.013
关键词
Prestressed stayed columns; Steel structures; Physical experiments; Ultimate load; Interactive buckling; Post-buckling; Cable system; Cross-arm
资金
- UK Engineering and Physical Sciences Research Council [EP/F022182/1]
- Engineering and Physical Sciences Research Council [EP/F022182/1] Funding Source: researchfish
- EPSRC [EP/F022182/1] Funding Source: UKRI
A full scale experimental investigation into the strength and behaviour of prestressed steel stayed columns in compression has been conducted. Results, including full load versus end-shortening curves, for a total of 18 test specimens are presented. Two critical modes of buckling symmetric and antisymmetric with interactive post-buckling are demonstrated experimentally and the imperfection sensitivity of the stayed columns is investigated. Interactive buckling is observed primarily when the individual buckling loads of the antisymmetric and symmetric modes are close or when the antisymmetric mode is critical. Analysis of the results reveals that increased prestress leads to an increased load-carrying capacity when instability occurs in the symmetric mode, but the reverse trend is found when the antisymmetric mode is critical. (C) 2012 Elsevier Ltd. All rights reserved.
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