THE BEHAVIOR OF PRESTRESSED CONCRETE PORTAL FRAMES AS INFLUENCED BY CREEP AND TEMPERATURE

This paper described experiments staged to observe the long-term effects of creep upon the behaviour of axially prestressed, two-pinned portal frames subjected to long-sustained elevated temperature regimes. The test apparatus is described and experimental results are presented. It is concluded that non-uniform temperatures significantly affect the deflection behaviour of the structures and cause internal stresses and moments to undergo marked changes with time. Elastic theory is incapable of estimating these changes. Other theories which recognize creep are therefore necessary. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
• Corporate Authors:

  An Foras Forbartha

  St Martin's House, Waterloo Road
  Dublin 4,   Ireland 
• Authors:
  • Krishnamdorthy, S
  • ENGLAND, G L
  • YU, C W
• Publication Date: 1971-3

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 23-36
• Serial:
  • MAGAZINE OF CONCRETE RESEARCH
  • Volume: 23
  • Issue Number: 74
  • Publisher: Thomas Telford Limited
  • ISSN: 0024-9831

Subject/Index Terms

• TRT Terms: Creep; Deflection; High temperature; Prestressed concrete; Temperature; Testing equipment
• Old TRIS Terms: Portal structures
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00083857
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 29 1975 12:00AM