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VISCOELASTIC ANALYSIS OF FLEXIBLE PAVEMENT EMBEDDED WITH CLSM BASES SUBJECTED TO SINUSOIDAL AND IMPULSIVE LOADS |
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| รหัสดีโอไอ | |
| Title | VISCOELASTIC ANALYSIS OF FLEXIBLE PAVEMENT EMBEDDED WITH CLSM BASES SUBJECTED TO SINUSOIDAL AND IMPULSIVE LOADS |
| Creator | Yen-Chu Liang, Her-Yung Wang, Li-Jeng Huang |
| Contributor | Didem Ozevin, Hossein Ataei, Mehdi Modares, Asli Pelin Gurgun, Siamak Yazdani, Amarjit Singh |
| Publisher | ISEC PRESS |
| Publication Year | 2562 |
| Keyword | FEM, Numerical Laplace inversion, FFT, Asphalt concrete |
| Abstract | This paper presents finite element analysis of 4-layered flexible pavements embedded visco-elastic asphalt concrete (AC) top layer and controlled low-strength materials (CLSM) sub-layers as well as graded crushed stone subgrades layers subjected to sinusoidal and impulsive surface wheel loads. Two-dimensional deformation assumption is employed. Time-dependent stress-strain relations are treated using Laplace transform based on correspondence principle. Scheme based on fast Fourier transform (FFT) is employed for inversion of Laplace transformed to obtain timedomain results. A typical 4-layered pavement is analyzed in which relaxation modulus of top visco-elastic asphalt layer is expressed in Prony series. Two kinds of CLSMs, i.e., CLSM-B80/30% and CLSM-B130/30% are compared with graded crushed stones and AC used for base materials. Time-domain responses of vertical displacement and stress at bottom of AC layer are compared. The vertical settlements using CLSM bases (B80/30% and B130/30%) are smaller than that using graded crushed stones even considering visco-elastic behavior of asphalt layer and show to be good materials employed as base substitutes for graded crushed stone in flexible pavement design |
| ISBN | 978-0-9960437-6-2 |
| Language | English |
| URL Website | https://www.isec-society.org/ |
| Website title | ISEC Society |
