FATIGUE LIFE OF COUPLING JOINTS OF PRESTRESSING TENDONS

In the case of post-tensioned members, mainly the splice devices of the tendons are endangered by fatigue. The fatigue resistance of the coupler is considerably lower than that of the prestressing steel outside the coupling joint. Experimental work to study the fatigue behaviour of couplers embedded in concrete of two different post- tensioning systems was carried out. The results show a small reduction in the fatigue strength compared to that of the same couplers tested in air. Furthermore, the redistribution of the steel stress due to different bond behaviour was observed. This paper presents the experimental results, and a simple method to calculate the stresses in the tendons and in the reinforcing steel considering the realistic bond behaviour of the prestressing steel (ps) and the reinforcing steel (rs). (A) For the covering abstract of the conference see IRRD 850834.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/3433012350
• Corporate Authors:

  Ernst (Wilhelm) and Sohn

  Hohenzollerdamm 170
  1001 Berlin 31,   Germany 
• Authors:
  • KOENIG, G
  • Tue, N
  • STURM, R
  • DANIELEWICZ, I
• Conference:
  • BRIDGE REHABILITATION. PROCEEDINGS OF THE 3RD INTERNATIONAL WORKSHOP ON BRIDGE REHABILITATION, JUNE 14-17, 1992, ORGANIZED BY THE TECHNICAL UNIVERSITY DARMSTADT AND THE UNIVERSITY OF MICHIGAN
• Publication Date: 1992

Language

• English

Media Info

• Features: References;
• Pagination: p. 601-12

Subject/Index Terms

• TRT Terms: Bridges; Concrete; Conferences; Fatigue (Mechanics); Joints; Loss and damage; Posttensioning; Prestressing; Stresses; Tension
• ITRD Terms: 3455: Bridge; 4755: Concrete; 8525: Conference; 5579: Fatigue (mater); 2998: Joint (structural); 9040: Loss; 4789: Post tensioning; 4777: Prestressing; 5575: Stress (in material); 5502: Tension
• Subject Areas: Bridges and other structures;

Filing Info

• Accession Number: 00631214
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 3-433-01235-0
• Files: ITRD
• Created Date: Jul 1 1993 12:00AM