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STRUCTURAL DESIGN - PART 09

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14 Load combination 5B
  • 1,35 permanent loads + 0,54 traffic loads on the whole bridge + 1,5 uniform thermal variation of +15 °C
  • maximum values of the elasticity modulus for the whole structure

fig. 39 - deformed configuration (load combination 5B)

fig. 40 - principal stresses S1 (load combination 5B)

fig. 41 - principal stresses S3 (in kg/cm2) (load combination 5B)

fig. 42 - principal stresses S3 (in kg/cm2) (load combination 5B)

fig. 43 - principal stresses S3 in the arch (in kg/cm2) (load combination 5B)

fig. 44 - principal stresses S3 (in kg/cm2) at the arch extrados (load combination 5B)

fig. 45 - principal stresses S3 (in kg/cm2) at the arch intrados (load combination 5B)

The load combinations 5A and 5B give the maximum value of the compressive stresses in the masonry.

The main differences between the analysis 5A and the analysis 5B are summarised in the following:

  • the value of the maximum compressive stress at the crown of the arch is equal to -23.78 kg / cm2 in the analysis 5A and increases up to –27.79 kg/cm2 in the load combination 5B (with a percentage variation of + 17 %), where the maximum values of the elasticity modulus have been assumed for the whole structure
  • in the spandrels the stresses increase from the value of –15.42 kg / cm2 in the analysis 5A to the value of –18.85 kg / cm2 (with a percentage variation of + 22 %).

CREDITS:

Intellectual property of this report and of the design drawings is owned by the University of Florence - Department of Civil Engineering

author of the text: Prof.Eng. Andrea Vignoli – other contributes have been mentioned in related paragraphs

© - General Engineering Workgroup -

SOURCE:

Final Design Report
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