SAFETY INDICES FOR STEEL BEAMS AND COLUMNS DESIGNED TO AS 1250-1981

This paper presents a reliability analysis of hot-rolled steel beams and columns designed according to as 1250-1981. Such an analysis is necessary to establish the target safety index for conversion of current steel codes to limit states format. The strength of steel beams and columns may vary from the nominal design strength due to (I) variability that is inherent in the structures such as variations in material strength and member dimensions, and (II) variability associated with the design process. Estimates of various components of variability are based on available experimental data. Beams are divided into three classes: 'plastic', inelastic buckling and elastic buckling, depending on the slenderness ratio and are treated separately. Axially loaded columns are analysed for various slenderness ratios. The range of safety index for the above members under dead and live load is found to vary between 2.5 to 6.0. A target safety index of 3 to 3.5 is recommended forr the new limit state design steel code. (Author)

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

  Institution of Engineers

  11 National Circuit
  Barton, A.C.T.,   Australia 

  Institution of Engineers

  11 National Circuit
  Barton, A.C.T.,   Australia 
• Authors:
  • Pham, L
  • Bridges, R Q
• Publication Date: 1985-2

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 105-110
• Serial:
  • Institution of Engineers (Australia) Civ Eng Trans
  • Volume: CE2
  • Issue Number: 1
  • Publisher: Institution of Engineers
  • ISSN: 0819-0259

Subject/Index Terms

• TRT Terms: Axis; Beams; Buckling; Coefficients; Columns; Indexes; Loads; Mathematical analysis; Mechanical elasticity; Reliability; Safety; Specifications; Standards; Statistics; Steel; Steel structures; Structural analysis; Support piles; Thinness; Ultimate load design; Variables
• Uncontrolled Terms: Slenderness; Slenderness ratio; Steel beams
• Geographic Terms: Australia
• ITRD Terms: 6471: Analysis (math); 8006: Australia; 6405: Axis; 3472: Beam; 3434: Bridge pier; 5522: Buckling; 5912: Elasticity; 5567: Load; 3399: Pile; 5504: Safety coefficient; 5513: Slenderness; 187: Specification (standard); 6555: Statistics; 4542: Steel; 9086: Variability
• Subject Areas: Bridges and other structures; Data and Information Technology; Design; Highways; Safety and Human Factors; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00399520
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, TRIS, ATRI
• Created Date: Aug 25 2004 2:44AM