PARTIALLY PRESTRESSED CONCRETE: EXAMPLES OF APPLICATION AND FUNDAMENTAL CONSIDERATIONS

BETON PARTIELLEMENT PRECONTRAINT: EXEMPLE D'APPLICATION ET CONSIDERATIONS THEORIQUES

AN ATTEMPT IS MADE TO SHOW WITH EXAMPLES AND THE USE OF FUNDAMENTAL PRINCIPLES THAT PARTIAL PRESTRESSING OFFERS CONSIDERABLE CONSTRUCTIONAL AND ECONOMIC ADVANTAGES, IN PARTICULAR AS REGARDS SMALL STRUCTURES AND PRECAST ELEMENTS. THE DANGER OF CORROSION OR FAILURE THROUGH FATIGUE IS HARDLY MORE CRITICAL THAN IN FULLY PRESTRESSED STRUCTURES. THERE EXISTS AN EXCEPTION IN THE CASE OF PRETENSIONED MEMBERS, FOR WHICH A REDUCTION IN PRESTRESSING IS NOT RECOMMENDED, SPECIALLY IF THE CONCRETE COVER IS THIN AND THE ENVIRONMENT AGGRESSIVE. ACCORDING TO THE AUTHOR THE SIA STANDARD 162 (1968) FOR PARTIAL PRESTRESSING IS FAR TOO RESTRICTIVE. TESTS, AMONG OTHERS AND THOSE CARRIED OUT BY THUERLIMAN,B, HAVE SHOWN THAT TOTAL PRESTRESSING IS NOT NECESSARY TO SUPPORT THE DEAD LOAD OF AND TO LIMIT ADDITIONAL STRESSES IN REINFORCEMENT, WHICH IS NOT PRESTRESSED AT 1500 KGF/CM SQUARED. IN PRINCIPLE IT SHOULD BE POSSIBLE TO USE THE WHOLE RANGE OF PRESTRESSING BETWEEN FULLY PRESTRESSED CONCRETE AND NON-PRESTRESSED REINFORCED CONCRETE WITHOUT EXCEEDING THE STRESS LEVELS PERMITTED AT THE MOMENT. THIS ARTICLE WAS FIRST PUBLISHED IN: SCHWEIZERISCHE BAUZEITUNG, VOL. 89, NUMBER 45, PP. 1129-33.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/17350522
• Authors:
  • WALTHER, R
• Publication Date: 1972-5

Language

• English

Media Info

• Pagination: 516-23
• Serial:
  • International Journal of Civil Engineering
  • Volume: 2
  • Issue Number: 1
  • Publisher: Springer International Publishing
  • ISSN: 1735-0522
  • EISSN: 2383-3874
  • Serial URL: http://link.springer.com/journal/40999

Subject/Index Terms

• TRT Terms: Bridges; Corrosion; Costs; Failure; Fatigue (Mechanics); Prestressed concrete; Pretensioning; Reinforced concrete; Standards
• Geographic Terms: Switzerland
• ITRD Terms: 3455: Bridge; 5252: Corrosion; 224: Cost; 5520: Failure; 5579: Fatigue (mater); 4796: Prestressed concrete; 4798: Pretensioning; 4794: Reinforced concrete; 187: Specification (standard); 8110: Switzerland
• Subject Areas: Bridges and other structures; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01310769
• Record Type: Publication
• Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
• Files: ITRD
• Created Date: Nov 21 2010 1:12PM