THE USE OF STEEL FIBRE CONCRETE IN SEISMIC DESIGN OF FRAMES

This is the second and final part of a paper published in the 1982 October issue of the New Zealand concrete construction. Tests made on two-beam column assemblies, and two beams of different lengths were designed to simulate very severe earthquake loading. Details are given of the tests and instrumentation used. Results with the conventionally reinforced concrete beam-column assembly demonstrated the need for adequate shear reinforcement. It was shown that fibre reinforcement within the beam-column joints significantly improved the shear resistance by increasing toughness and ductility. However there appears to be a need for some additional conventional shear reinforcement in a joint core to withstand intense cyclic loading. The inclusion of fibre in the joint core restricts inclined tension cracking to the joint core diagonals. The load carrying capacity of the column through the joint core is maintained. Steel fibres in the plastic hinge regions of reinforced concrete beams improves the ductile performance at ultimate load. Shear-induced diagonal tension cracking in beams can be almost eliminated with adequate fibre reinforcement. However, conventional beam stirrups may be needed to prevent splitting of the concrete along vertical cracks which might occur after tensile yielding of the main reinforcement. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05490219
• Corporate Authors:

  Concrete Publications Limited

  Securities House, 126 the Terrace
  Wellington,   New Zealand 
• Authors:
  • Park, R
  • Gaerty, L
  • Stevenson, E C
• Publication Date: 1982-11

Media Info

• Features: Figures; Photos; Tables;
• Pagination: p. 23-27
• Serial:
  • NEW ZEALAND CONCRETE CONSTRUCTION
  • Volume: 26
  • Publisher: CEMENT & CONCRETE ASSOCIATION OF NEW ZEALAND
  • ISSN: 0549-0219

Subject/Index Terms

• TRT Terms: Beams; Bearing capacity; Breaking loads; Columns; Concrete; Cracking; Ductility; Earthquake resistant design; Earthquake resistant structures; Earthquakes; Fibers; Fracture mechanics; Joints; Material reinforcement; Reinforced concrete; Reinforcing materials; Repeated loads; Shear strength; Simulation; Steel; Stirrups; Strength of materials; Tests
• Old TRIS Terms: Joint
• ITRD Terms: 3472: Beam; 3085: Bearing capacity; 3434: Bridge pier; 5211: Cracking; 5909: Ductility; 4557: Fibre; 2998: Joint (structural); 4794: Reinforced concrete; 3471: Reinforcement (in mater); 5588: Repetitive loading; 5731: Seismic; 5531: Shear; 9103: Simulation; 4542: Steel; 3460: Stirrup (reinforcement); 5544: Strength (mater); 6255: Test
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00382103
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Apr 30 1984 12:00AM