THE INFLUENCE OF SECTION BREADTH ON ROTATION CAPACITY
A series of 78 prisms of plain concrete was tested in a special test rig simulating a portion of an under-reinforced beam. The prisms were allowed to crack and the influence of the tension concrete below the neutral axis was included. Prisms having different breadth/depth ratios were tested to quantify the difference in behaviour between broad "slab" type sections and narrow "beam" -type sections. Two series of under-reinforced beams were tested to confirm the results obtained from the prism tests. It is concluded that the breadth/depth ratio of a rectangular section is a major variable governing its rotation capacity under ultimate conditions. Some further testing is suggested to investigate this parameter in respect of t, i and box beams. It is further concluded that there should be no problems in regard to ductility in solid slabs designed in accordance with yield-line theory. (Author/TRRL)
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0721011942
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Corporate Authors:
Cement and Concrete Association
Wexham Spring
Slough SL3 6PL, Buckinghamshire, England -
Authors:
- Clements, S W
- Cranston, W B
- SYMONS, M G
- Publication Date: 1980-9
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: 27 p.
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Serial:
- CBI FORSK/RES
- Issue Number: 533
- Publisher: Cement and Concrete Research Institute
- ISSN: 0346-6906
Subject/Index Terms
- TRT Terms: Beams; Concrete; Cracking; Deformation; Depth; Ductility; Failure; Loads; Material reinforcement; Plastic deformation; Reinforcing materials; Rotation; Samples; Slabs; Tension; Test procedures; Tests; Width
- Uncontrolled Terms: Concrete beams
- Old TRIS Terms: Discharge rate
- ITRD Terms: 3472: Beam; 4755: Concrete; 5211: Cracking; 4732: Creep (mater); 5595: Deformation; 6499: Depth; 5909: Ductility; 5520: Failure; 5567: Load; 3471: Reinforcement (in mater); 6406: Rotation; 6251: Sample (mater); 5502: Tension; 6255: Test; 6479: Width
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00396265
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 0 7210 1194 2
- Report/Paper Numbers: Monograph
- Files: ITRD, TRIS
- Created Date: Jan 31 1986 12:00AM