PROBABLISTIC MODELS FOR CALCULATION OF LOAD SPECTRA AND LOAD EFFECT SPECTRA FOR HIGHWAY BRIDGES

This report describes two numerical models, the first for load spectra for highway sections and the second for load effect spectra for highway bridges. Input variables of both deterministic and stochastic character are used. The output of the first model is used as input for the second. Load spectra and typical load effect spectra are calculated. Input for the first program are distribution of total weight by vehicle type, average annual mileage by type, regional road length, distribution of utilised load bearing capacity by type. Input for the second program are weight distribution and axle distances for each type, load spectra, lateral influence function, longitudinal influence line, traffic data. Output of second program are distribution of equivalent loads, influence lines and vehicle type influence lines for two driving directions, distributions of load effect range level, and final distribution of load effect range levels before and after dynamic amplification. Distribution output is mostly in the form of plotted spectra. /TRRL/

• Corporate Authors:

  Lund University of Technology, Sweden

  Fack S-22007
  Lind 7,   Sweden 
• Authors:
  • Christiansson, P
• Publication Date: 1976

Media Info

• Features: Figures; References;
• Pagination: 276 p.

Subject/Index Terms

• TRT Terms: Bridges; Calculation; Electromagnetic spectrum; Highway bridges; Highways; Load factor; Load transfer; Loads; Mathematical models
• ITRD Terms: 3455: Bridge; 6464: Calculation; 2755: Highway; 5567: Load; 6473: Mathematical model; 6776: Spectrum
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00146445
• Record Type: Publication
• Source Agency: Swedish National Road and Traffic Research Institute
• Report/Paper Numbers: Report 71 Thesis
• Files: ITRD, TRIS
• Created Date: Sep 20 1977 12:00AM