Buckling and collapse capacity of prestressed steel tube stayed columns with one and two crossarms

被引:9
作者
Machacek, Josef [1 ]
Pichal, Radek [1 ]
机构
[1] Czech Tech Univ, Fac Civil Engn, Thakurova 7, Prague 16629, Czech Republic
关键词
Stayed columns; Two crossarms; Stainless steel; Buckling; Collapse load; Critical load; POSTBUCKLING BEHAVIOR; STABILITY; SINGLE;
D O I
10.1016/j.tws.2018.07.045
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Prestressed tube stayed columns with one and two crossarms are investigated. The analyses are performed using SCIA Engineer software and ANSYS package and validated by tests of four stayed columns. First, the investigations concern the ideal (perfect) columns and cover linear buckling analyses (LBA) and geometrically nonlinear analyses (GNIA) to obtain critical loads and buckling modes under various prestressing levels. Second, the collapse loadings of the imperfect columns with initial deflections required by Eurocode EN 1993-1-1 are analysed with respect to relevant initial deflection modes and material behaviour (elastic for mild steel, nonlinear for stainless steel). All the analyses are performed for geometrical characteristics of the tested columns and the results concerning both the column with one or two crossarms are set against each other to assess the respective effectivity. In addition, the geometrical analysis of the prestressed ideal column with two crossarms and respective formulas concerning optimal prestressing and maximal critical loading are presented. Finally some recommendations for practical use are suggested.
引用
收藏
页码:58 / 68
页数:11
相关论文
共 26 条
  • [1] Stability analysis and parametric study of pre-stressed stayed columns
    Chan, SL
    Shu, GP
    Lü, ZT
    [J]. ENGINEERING STRUCTURES, 2002, 24 (01) : 115 - 124
  • [2] Experimental and numerical assessment of stayed steel columns
    de Araujo, R. R.
    de Andrade, S. A. L.
    Vellasco, P. C. G. da. S.
    da Silva, J. G. S.
    de Lima, L. R. O.
    [J]. JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2008, 64 (09) : 1020 - 1029
  • [3] de Lima LRO, 2012, TUBULAR STRUCTURES XIV, P377
  • [4] HAFEZ HH, 1979, J STRUCT DIV-ASCE, V105, P359
  • [5] PARAMETRIC EXPERIMENTS ON STAYED COLUMNS WITH SLENDER BIPODS
    JEMAH, AK
    WILLIAMS, FW
    [J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 1990, 32 (02) : 83 - 100
  • [6] Khosla C. M., 1975, THESIS, P1
  • [7] Stability of Multiple-crossarm Prestressed Stayed Columns With Additional Stay Systems
    Lapira, Luke
    Wadee, M. Ahmer
    Gardner, Leroy
    [J]. STRUCTURES, 2017, 12 : 227 - 241
  • [8] Structural behaviour of prestressed stayed columns with single and double cross-arms using normal and high strength steel
    Martins, Joao Pedro
    Shahbazian, Ashkan
    da Silva, Luis Simoes
    Rebelo, Carlos
    Simoes, Rui
    [J]. ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, 2016, 16 (04) : 618 - 633
  • [9] Experimental study of critical and post-buckling behaviour of prestressed stayed columns
    Osofero, Adelaja Israel
    Wadee, M. Ahmer
    Gardner, Leroy
    [J]. JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 2012, 79 : 226 - 241
  • [10] BUCKLING AND POSTBUCKLING BEHAVIOUR OF STAINLESS STEEL STAYED DOUBLE CROSSARM PRESTRESSED COMPRESSION ELEMENTS
    Pichal, R.
    Machacek, J.
    [J]. ENGINEERING MECHANICS 2018 PROCEEDINGS, VOL 24, 2018, : 681 - 684