ENGINEERING STRUCTURES - SURVEILLANCE AND NON-DESTRUCTIVE TESTING - MEASUREMENT OF BEARING PRESSURE

LES OUVRAGES D'ART - SURVEILLANCE ET AUSCULTATION - LA PESEE DES REACTIONS D'APPUI

In statically indeterminate prestressed concrete structures built according to a statical plan different from the final one, the time-related evolution in materials (shrinkage and creep of concrete, relaxation of steel) leads to a progressive modification of the statically indeterminate reactions. To neglect or underestimate this effect results in the appearance of disorders in structures already in service. This is a phenomenon not yet well understood. The evolution in time of the bearing pressure was measured on permanently instrumented structures, and design assumptions were thus verified. The measurement of the bearing pressure on structures opened to traffic and already showing defects is a means of detecting disorders. Measurement methods are described and their limitations discussed. (TRRL)

• Corporate Authors:

  Laboratoire Central des Ponts et Chausees (LCPC)

  Boulevard Lefebvre 58
  Paris Cedex 15,   France  F-75732
• Authors:
  • Chatelain, J
• Publication Date: 1978-9-10

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 170-178
• Serial:
  • Bulletin de Liaison des Lab des Ponts et Chaussees
  • Issue Number: 97
  • Publisher: Laboratoire Central des Ponts et Chausees (LCPC)

Subject/Index Terms

• TRT Terms: Bearings; Bridge bearings; Bridges; Concrete; Creep; Field tests; Force; Jacks (Mechanical equipment); Measurement; Measuring instruments; Mechanical relaxation; Nondestructive tests; Pressure; Prestressed concrete; Reinforcing steel; Sensors; Shrinkage; Statically indeterminate frames; Structures; Surveillance; Weight
• Old TRIS Terms: Concrete creep; Concrete shrinkage
• ITRD Terms: 6155: Apparatus (measuring); 3415: Bearing (bridge); 3455: Bridge; 5421: Force; 6226: In situ; 3831: Jack; 6136: Measurement; 5412: Pressure; 4796: Prestressed concrete; 6120: Sensor; 5516: Statically indeterminate; 5485: Weight
• Subject Areas: Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00315253
• Record Type: Publication
• Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
• Report/Paper Numbers: SERIAL, ANALYTIC
• Files: ITRD, TRIS
• Created Date: Jun 12 1981 12:00AM