沥青铺装的逆结构与一般结构的变形对比分析.pdfVIP

The 12th International Symposium on Structural Engineering THE DISTORTION CONTRAST ANALYSIS OF INVERSE STRUCTURE AND GENERAL STRUCTURE ASPHALTUM PAVEMENT Jianhong Gao Architecture and Civil Engineering School,UST Inner Mongolia,Baotou 014010, P.R.China Abstract: Based on the multi-layer elastic system, the distortion is analysied contrastively through finite element method to the inverse structure and natural structure asphaltum pavement under wheel load in this paper. The conclusion that the inverse structure has no predominance in the road whole distortion aspect is obtained. At the same time, the distortion and its difference diversification of the different pavement combination under the different axes load is demonstrated. All of that can offer availability and use for reference for practice. Keywords: Inverse structure, general structure, distortion 1 INTRODUCTION and supposes the material is linear elastomeric. The Figure 1 shows the building model cell is three-dimensional hexahedron 8 –node and the The semirigid pavement consist of asphaltum model size(X, Y, Z) is 2.65m ×2.5m ×2.65m. concrete surface layer and semirigid basic layer, The boundary: underside UY=0; one side of namely general structure,which has strong right and left direction is Symmetry B.C., and carrying capacity and resisting distortion power. other side is UX=0; fore-and-aft is UZ=0. The It is the main structure style in our country freeway contact condition is entirety continuum. The in 20 years. But with the rapid increasing of the load is BZZ-10