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Review
. 2014;90(2):47-55.
doi: 10.2183/pjab.90.47.

Studies on stress distribution in pavements subjected to surface shear forces

Affiliations
Review

Studies on stress distribution in pavements subjected to surface shear forces

Tsutomu Kimura. Proc Jpn Acad Ser B Phys Biol Sci. 2014.

Abstract

It has been pointed out by some researchers that road pavements are subjected to vertical stress due to vehicles on them as well as shear stress at the time of braking or acceleration of vehicles. In this paper, the results of elastic analysis to obtain the rigorous solution for an elastic two-layer system subjected to surface shear stress are described and it is shown that the effect of shear stresses applied at the surface gives rise to fairly large stresses in the system. On the basis of these findings, the author attempts to explain why pavement failure takes place frequently at places such as crossings and curved parts where pavements are subjected to high magnitude of surface shear stresses.

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Figures

Figure 1.
Figure 1.
Axisymmetric polar coordinate used in the analysis; a and P denote the radius of loaded area and total shear force respectively.
Figure 2.
Figure 2.
Pressure bulbs for τrz and τθz for two-layer systems subjected to surface shear force. (Figures on the stress contour lines indicate the percentage of the shear stress on each contour line to the surface shear force.)
Figure 2.
Figure 2.
Pressure bulbs for τrz and τθz for two-layer systems subjected to surface shear force. (Figures on the stress contour lines indicate the percentage of the shear stress on each contour line to the surface shear force.)
Figure 3.
Figure 3.
Maximum shearing stress τmax in two-layer systems subjected to surface shear force/surface vertical force.

References

    1. Barber, E.S. (1962) Shear loads on pavements. Proceedings of 1st International Conference on Structural Design of Asphalt Pavements, Michigan.
    1. Marwick A.H.D., Starks H.J.H. (1941) Stresses between tire and road. J. ICE 16, 309–325
    1. Sneddon, I.N. (1951) Fourier Transforms. McGraw-Hill, New York.
    1. Muki R. (1956) A three-dimensional elastic problem in which a semi-infinite elastic medium is subjected to surface shear force. Trans. Jpn. Soc. Mech. Eng. 22, 468–474(in Japanese)
    1. Kimura, T. (1978) Stress Distributions in Soil Media. Kajima Publishing Co., Tokyo (in Japanese).