ESTIMATION OF PLASTIC CURVATURE AFTER SHAKEDOWN OF CONTINUOUS BEAMS

The inelastic behaviour of continuous beams subjected to moving point loads is analysed. A mathematical expression is used to describe the actual moment curvature (M-K) relationship for the analysis instead of the conventional idealised bilinear moment curvature relationship. The non linear behaviour in the inelastic range under variable repeated loads is reviewed. To achieve shakedown beyond the elastic limit, a permanent inelastic deformation is necessary, contributing to the plastic curvature formations in the structures. Two span and three span continuous beams are studied to demonstrate the shakedown and incremental collapse behaviour prior to static collapse. The state of initial stress, the form of the inelastic moment curvature relationship, and the history of loading can have a profound effect on the development of plastic curvature, but the shakedown and static collapse limit loads are not affected by these factors (A).

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0867469307
• Corporate Authors:

  Monash University

  Department of Civil Engineering
  Clayton, Victoria  Australia  3800
• Authors:
  • Goh, C C
  • Grundy, P
• Publication Date: 1989

Language

• English

Media Info

• Pagination: 43 p.
• Serial:
  • CIVIL ENGINEERING RESEARCH REPORT
  • Issue Number: 9/19
  • Publisher: Monash University
  • ISSN: 0155-6282

Subject/Index Terms

• TRT Terms: Beams; Behavior; Bridge members; Continuous structures; Curves (Geometry); Deformation; Elasticity (Mechanics); Engineering moments; Failure; Formulas; Length; Loads; Mathematical models; Nonlinear systems; Plasticity; Repeated loads; Torque
• Uncontrolled Terms: Bridge spans; Formula (Math)
• ITRD Terms: 6471: Analysis (math); 3472: Beam; 6269: Beam test; 9001: Behaviour; 3455: Bridge; 8525: Conference; 9006: Continuous; 4732: Creep (mater); 6496: Curve (math); 5595: Deformation; 2870: Degree of curvature; 9011: Design (overall design); 5912: Elasticity; 5520: Failure; 5567: Load; 4555: Material (constr); 6473: Mathematical model; 5410: Moment (force); 6482: Non linear system; 5922: Plasticity; 5925: Properties; 5588: Repetitive loading; 3452: Span; 1255: Vehicle
• Subject Areas: Bridges and other structures; Safety and Human Factors;

Filing Info

• Accession Number: 00498218
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-86746-930-7
• Report/Paper Numbers: 89
• Files: ITRD, TRIS, ATRI
• Created Date: Sep 30 1990 12:00AM