BITUMINOUS PAVEMENT STRESSES CAUSED BY HORIZONTAL AND VERTICAL TRAFFIC LOADING

BEANSPRUCHUNG VON BITUMINOSEN STRASSENBESFESTIGUNGEN DURCH HORIZONTALE UND VERTIKALE VERKEHRSBELASTUNG

In the past, the theoretical calculations focused on the determination of bituminous pavement stresses caused by vertical loads. Plastic deformations (rutting) have however shown that horizontal forces are also of decisive influence on this type of deformation. Horizontal forces between tires and road surface are activated in the course of acceleration and other constraints. Maximum values are reached when starting a car or applying the brakes as well as on gradients and curves. Since wheel-load displacements generally occur simultaneously, these add to the stresses to which the pavement is being subjected. In the first part of the paper, truck tire horizontal and vertical forces affecting the pavement surface are calculated. The second part of the paper concentrates on the calculation of the shear stresses produced by them in bituminous pavements. The considerations are based on the following conditions: a very sunny summer day with considerably heated surface. Conclusions with respect to the other seasons of the year can be drawn on the basis of theoretical calculations carried out in the past. Different models of mathematical pavement calculations (semi-infinite plane, half-space, multi-layer system) are then compared and followed by a discussion of their results.

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    Heraugegeben vom Bundesminister fur Verkehr

    Abteilung Strassenbau
    Bonn-Bad Godesberg,   Germany 
  • Authors:
    • Lenker, S
  • Publication Date: 1977

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  • Accession Number: 00184880
  • Record Type: Publication
  • Source Agency: Heraugegeben vom Bundesminister fur Verkehr
  • Report/Paper Numbers: Monog Ser
  • Files: TRIS
  • Created Date: Feb 3 1979 12:00AM