FULL SCALE MODEL TESTS WITH BUNDLES OF PRESTRESSED MEMBERS TO DETERMINE CLAMPING COEFFICIENTS WHICH DETERMINE FRICTION

GROSSMODELLVERSUCHE MIT BUENDELSPANNGLIEDERN ZUR ERMITTLUNG DER FUER DIE REIBUNG MASSGEBENDEN KLEMMBEIWERTE

IN THE FULL SCALE MODEL TESTS ON PRESTRESSED MEMBER FRICTION WHICH WERE UNDERTAKEN IN AACHEN, A COEFFICIENT OF CLAMPING WAS OBTAINED FOR PRESTRESSED BUNDLES OF ROUNDED, SMOOTH STEELS WHICH WAS SIGNIFICANTLY LOWER THAN THE THEORETICAL VALUE DETERMINED ON THE BASIS OF GEOMETRIC RELATIONS. PRESTRESSED BUNDLES OF FLAT, RIBBED PRESTRESSING STEELS, ON WHICH NO THEORETICAL WORK HAD BEEN UNDERTAKEN HITHERTO, PRODUCED SIGNIFICANTLY HIGHER CLAMPING COEFFICIENTS THAN COMPARABLE PRESTRESSED BUNDLES OF SMOOTH, ROUNDED STEELS. THE OBJECT OF THE RESEARCH IS TO CLARIFY THE MAGNITUDE AND TYPE OF CLAMPING STRESSES FOR VARIOUS TYPES OF PRESTRESSING MEMBERS.

Language

• German

Project

• Status: Active
• Sponsor Organizations:

  MINISTER FUER WISSENSCHAFT UND FORSCHUNG DES LANDES NORDRHEIN-WESTFALEN (MINISTER FOR RESEARCH AND TECHNOLOGY OF NORTHRHINE-WESTFALIA)

  VOELKLINGSTR. 4
  DUESSELDORF,   DEUTSCHLAND BR  D-4000
• Project Managers:

  Trost, H

• Performing Organizations:

  TECHNISCHE HOCHSCHULE AACHEN, LEHRSTUHL FUER MASSIVBAU (TECHNICAL UNIVERSITY OF AACHEN, INSTITUTE FOR MASSIVE CONSTRUCTION)

  MIES-VAN-DER-ROHE-STR. 1
  AACHEN,   DEUTSCHLAND BR  D-5100
• Start Date: 19790500
• Expected Completion Date: 19811200
• Actual Completion Date: 0
• Source Data: ITRD D702384

Subject/Index Terms

• TRT Terms: Coefficient of friction; Coefficients; Force; Friction; Posttensioning; Prestressing; Research projects; Steel; Tests
• ITRD Terms: 6410: Coefficient; 5460: Coefficient of friction; 5421: Force; 5452: Friction; MODEL ; 4789: Post tensioning; 4777: Prestressing; 8557: Research project; 4542: Steel; 6255: Test
• Subject Areas: Research; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01291025
• Record Type: Research project
• Source Agency: Bundesanstalt für Straßenwesen (BASt)
• Files: ITRD
• Created Date: Nov 21 2010 2:27AM