TESTS ON THE DYNAMIC BEHAVIOUR OF PRECAST FLOORS AT SUDDEN REMOVAL OF AN EXTERIOR SUPPORT . NORDIC CONCRETE RESEARCH. PUBLICATION NO 7

In the design of precast buildings against progressive collapse, it may be favourable to provide for alternative load-bearing systems which can be activated in case of structural damage. The transformation from an ordinary to an alternative path of bearing will be accompanied by dynamic effects and a non-linear behaviour, which may complicate an accurate design. A simple well-defined collapse mechanism was studied experimentally. Longitudinal strips of precast floors were exposed to sudden removals of an exterior support. It was possible to take advantage of the ductile behaviour of the intermediate floor connection and achieve alternative load-bearing by cantilever action. However, considerable plastic rotations occurred in the connection. A theoretical approach is suggested for the analysis of this and similar collapse mechanisms. The calculations were always in good agreement with the observed behaviour of the test specimens, although the tie connections were characterized by load-displacement relationships based on experiences from tests with static loading. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08006377
• Corporate Authors:

  Nordic Concrete Federation

  Ingeniorernes, Kronprinsesgade 17 N
  Oslo 2,   Norway 
• Authors:
  • Engstroem, B
• Publication Date: 1988-12

Media Info

• Features: References;
• Pagination: p. 52-72
• Serial:
  • Publication of: NORDIC CONCRETE FEDERATION
  • Publisher: NORDIC CONCRETE FEDERATION
  • ISSN: 0800-6377

Subject/Index Terms

• TRT Terms: Analysis; Beams; Behavior; Dynamics; Failure; Mathematical models; Precast concrete; Reinforced concrete; Slabs
• ITRD Terms: 6471: Analysis (math); 3472: Beam; 9001: Behaviour; 5473: Dynamics; 5520: Failure; 6473: Mathematical model; 4792: Precast concrete; 4794: Reinforced concrete; 3491: Slab
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00493286
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM