A DESIGN AID FOR SHEAR LAG CALCULATIONS
A semi-empirical method, termed the "3-bar method", for calculation of shear lag effects in box girders is described. Explicit solutions for different support and loading conditions are presented which enable the amplified edge stresses due to shear lag to be calculated directly. Results given by the 3-bar method are compared with those obtained from the interim design rules (idr) for box girders and there is good agreement. The ease of application of the proposed method, exemplified by the calculations in the appendix, make it suitable as an aid during initial design stages. Situations in which the effects of shear lag are important are identified. High stress amplification in heavily stiffened steel girders and at intermediate supports of continuous girders is noted.(a) (TRRL)
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Corporate Authors:
Institution of Civil Engineers
One Great George Street, Westminster
London, United Kingdom SW1P 3AA -
Authors:
- EVANS, H R
- Taherian, A R
- Conference:
- Publication Date: 1980-6
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 403-424
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Serial:
- Volume: 69
- Issue Number: PT2
Subject/Index Terms
- TRT Terms: Box girders; Bridge design; Bridges; Calculation; Continuous structures; Design; Information processing; Loads; Mathematical analysis; Mathematical models; Methodology; Shear strength; Steel structures; Stresses; Structural design
- Uncontrolled Terms: Amplification; Edges; Shear lag
- Old TRIS Terms: Computing
- ITRD Terms: 6471: Analysis (math); 3474: Box girder; 3455: Bridge; 6464: Calculation; 9011: Design (overall design); 5567: Load; 6473: Mathematical model; 9102: Method; 5531: Shear; 5575: Stress (in material)
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00324637
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, TRIS
- Created Date: Aug 15 1981 12:00AM