Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2013.2146.2150LiMing-JianWangXu-DongZhangNian-Mei1220131312Layered asphalt pavement structures are usually analyzed applying
small deformation theory. In this study, finite deformation theory was employed
to achieve more accurate results. The response of pavement structure under vertical
and horizontal loads was investigated by three-dimensional finite element method.
The calculating results, especially for deflection, on the basis of finite deformation
theory are very different from that according to the small deformation theory.
And the difference will increase while the stiffness of pavement structure decrease.
With only vertical loads, asphalt layer is mainly under compressive stress in
three directions. With horizontal loads and vertical loads, shear stress contributes
to accumulated plastic deformation in the asphalt layer. Sliding between layers
could occur due to the shear stress. Tensile strain can cause fatigue cracking
in asphalt layer under low temperature. Due to a small modulus of resilience,
there exists a large compressive strain and visible deflection in soil base.]]>Hu, X., K. Su, X. Hu and L. Sun,2007Liu, J.Q., B.S. Wang, C.C. Chen and Y.Y. Chao,2011Wei, S., Q.G. Yang and J.Y. Gu,2011Xu, Y. and L.J. Sun,2012Zaghloul, S.M. and T.D. White,1993