TESTS ON TWO MULTIBEAM SKEW BRIDGES OF COMPOSITE STEEL/CONCRETE CONSTRUCTION

ESSAIS DE DEUX PONTS BIAIS MULTIPOUTRES EN CONSTRUCTION MIXTE ACIER-BETON

Those two bridges of normal spans (35 and 40 M) are without cross-bracing, and very skewed. The tests carried out on the bridges led to confirm the accuracy of calculation results and brought to light the bearing capacity of such a structure. Skew test results showed that finite element calculations on the model of an isotropic slab with eccentric ribbing gave a very accurate analysis of these structures. Results of bearing pressure measurements and of the transverse distribution test have confirmed that the beam grid calculation (stress) gives a sufficiently accurate determination of the stresses on the main composite girders and of the bearing pressures of such structures. Because the forces generated in the wedges of the concrete deck by the loads applied outside these zones are small, the calculation of an eccentrically ribbed slab (more costly) on a model is recommended only for the analysis of the effect of large concentrated loads or for any other special condition affecting the bearing behaviour of the structure. (TRRL)

• Corporate Authors:

  Imprimerie la Concorde

  Terreaux 29
  1000 Lausanne,   Switzerland 
• Authors:
  • PERRET, J
  • Rabinovici, A
  • LEBET, J-P
  • Crisinel, M
• Publication Date: 1978-7-20

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 221-228
• Serial:
  • BULLETIN TECHNIQUE DE LA SUISSE ROMANDE
  • Volume: 78
  • Issue Number: 15

Subject/Index Terms

• TRT Terms: Beams; Bearing capacity; Bridge bearings; Bridge decks; Bridges; Composite materials; Computer programs; Concentrated loads; Concrete; Distributions (Statistics); Finite element method; Force; Girders; Isotropic materials; Isotropy; Mathematical models; Metal bridges; Scale models; Skew bridges; Slabs; Stresses; Structural models; Tests; Wedges
• Uncontrolled Terms: Models; Transverse; Transverse distribution
• Old TRIS Terms: Isotropic mass
• ITRD Terms: 3472: Beam; 3415: Bearing (bridge); 5587: Concentrated loading; 6490: Finite element method; 5421: Force; 5917: Isotropic; 3465: Metal bridge; 6205: Model (not math); 3418: Multibeam bridge; 3448: Skew bridge; 3491: Slab; 8645: Software; 6255: Test; 9081: Transverse
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00330278
• Record Type: Publication
• Source Agency: Ecole Polytechnique Fédérale de Lausanne (EPFL)
• Files: ITRD, TRIS
• Created Date: Aug 15 1981 12:00AM