접지압력이 얇은 아스팔트포장 표층 인장 변형률에 미치는 영향 분석 (Effect of Tire Contact Stresses on Tensile Strains in the Surface of Thin Asphalt Pavement)

서지정보

· 발행기관 : 한국도로학회
· 수록지 정보 : 한국도로학회논문집 / 10권 / 2호 / 51 ~ 60페이지
· 저자명 : 박대욱, 박준규

초록

In this paper, comparisons are presented on the predicted tensile strains which can affect the fatigue life of a thin asphalt
concrete (AC) pavement near the surface of pavement from three-dimensional (3D) finite element (FE) using 3D measured tire
contact stresses of a radial tire and a bias ply tire and a layered linear elastic program (BISAR). The objective was to analyze
the stress distributions for a 11R22.5 radial tire and a 10x20 bias ply tire, and to compare the predicted tensile strains at the
top and bottom of AC surface using different analysis methods. The results show that the stress distributions of two tires are
similar but the 11R22.5 radial tire has much higher vertical contact stress than that of the 10x20 bias ply tire. The predicted
tensile strains at the bottom of AC layer under the center of tire showed higher value by BM (BISAR with the measured contact
area) method, which the measured tire contact area is used in a layered elastic program, while the tensile strain at the top of
AC surface of 3.5cm offset distance from tire edge by 3D FE analysis showed the highest values among three analysis methods.

영어초록

In this paper, comparisons are presented on the predicted tensile strains which can affect the fatigue life of a thin asphalt
concrete (AC) pavement near the surface of pavement from three-dimensional (3D) finite element (FE) using 3D measured tire
contact stresses of a radial tire and a bias ply tire and a layered linear elastic program (BISAR). The objective was to analyze
the stress distributions for a 11R22.5 radial tire and a 10x20 bias ply tire, and to compare the predicted tensile strains at the
top and bottom of AC surface using different analysis methods. The results show that the stress distributions of two tires are
similar but the 11R22.5 radial tire has much higher vertical contact stress than that of the 10x20 bias ply tire. The predicted
tensile strains at the bottom of AC layer under the center of tire showed higher value by BM (BISAR with the measured contact
area) method, which the measured tire contact area is used in a layered elastic program, while the tensile strain at the top of
AC surface of 3.5cm offset distance from tire edge by 3D FE analysis showed the highest values among three analysis methods.

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