Life Goes On: Prestressed Composite Tendons

This article discusses carbon-fibre reinforced polymers (CFRP). Developed in the 1960s as a way to provide structural strengthening to bridges worldwide, current applications of the material have extended to use in post-tension strengthening tendons. The author notes that post-tensioning of CFRP plates can prevent premature debonding while maximizing the strength properties of the material. As bridges age and more demands are placed on them to accommodate ever-increasing live loads, the author sees the necessity for overall bridge structural strengthening. One possible solution is seen in the use of the VSL Carbostress prestressed CFRP system, designed as a versatile advanced strengthening system that works for bridges and other structures (e.g., civil structures, commercial structures, private properties). Non-bonded external prestressing is the basis of the system, which consists of CFRP tendons having concentrated force transfers at the plate ends. The author describes applications of the Carbostress system in detail, including a recent application at the Xiaofend Railway Bridge in Changsha, China. Other examples noted include the Hutten Bridge (Lucerne, Switzerland) and the Escher Canal Bridge (Glarus, Switzerland).

Language

  • English

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Filing Info

  • Accession Number: 01052139
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 15 2007 7:37AM