ELASTIC-PLASTIC-SOFTENING COLLAPSE LOAD ANALYSIS OF REINFORCED CONCRETE FRAMES

Softening of reinforced concrete sections at advanced curvatures in flexure is taken into account in collapse load analysis of frames. Elements of a stiffness matrix for elastic elements with softening portions are derived. Examples demonstrate the application of computer program PAWS ("plastic analysis with softening") to concrete frame structures. A steeper softening slope reduces both the number of hinges formed before collapse and the collapse load, compared with elastic-plastic behaviour. PAWs may be used to find critical softening parameters for first or later formed hinges or to compute ductility requirements for the attainment of any desired proportion of full elastic- plastic load capacity. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08190259
• Corporate Authors:

  Institution of Engineers, Australia

  1 Chandos Street
  St Leonards,   Australia 

  Institution of Engineers, Australia

  1 Chandos Street
  St Leonards,   Australia 
• Authors:
  • Darvall, P L
  • Mendis, P A
• Publication Date: 1984-11

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 287-295
• Serial:
  • Institution of Engineers (Australia) Civ Eng Trans
  • Volume: CE26
  • Issue Number: 4
  • Publisher: Institution of Engineers
  • ISSN: 0819-0259

Subject/Index Terms

• TRT Terms: Analysis; Collapse; Computer programs; Curvature; Ductility; Elastoplasticity; Engineering moments; Failure; Frames; Hinges; Length; Loads; Mechanical elasticity; Plasticity; Reinforced concrete; Softening point; Stiffness; Torque
• Uncontrolled Terms: Elastic plastic analysis
• ITRD Terms: 2870: Degree of curvature; 5909: Ductility; 5912: Elasticity; 5520: Failure; 3322: Frame; 3462: Hinge; 6488: Length; 5567: Load; 5410: Moment (force); 5922: Plasticity; 4794: Reinforced concrete; 5272: Softening; 8645: Software; 5931: Stiffness
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00396096
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, TRIS, ATRI
• Created Date: Jan 31 1986 12:00AM