We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Three‐dimensional FEM loading stress analysis on a new airport concrete pavement ultra‐thin whitetopping overlay structure.
- Authors
Zhu, Maojiang; Weng, Xingzhong; Zhang, Jun
- Abstract
In order to solve capability problems occurred in airport pavement slabs, a new airport concrete pavement ultra‐thin whitetopping (UTW) overlay structure was put forward on the basis of UTW theory. By modeling the structure in the FEM software ANSYS and applying loads on it, the structural critical loading position was determined, stress variation pattern at the bottom of the overlay slab was studied regarding the changes in overlay slabs' size and thickness as well as the bonding conditions between the asphalt overlay and UTW overlay. Meanwhile, the impact of the asphalt overlay on the tensile stress at bottom of the UTW overlay slab, which is strongly influenced by thickness and elastic modulus, was also explored. In order to minimize the tensile stress at the bottom of the overlay slab and prolong the lifespan of the pavement structure, the size and thickness of the UTW overlay should be strictly controlled—the size should not exceed 1.8 × 1.8 m while the thickness should be no less than 7 cm, and asphalt with elastic modulus over 1,500 MPa was recommended to be chosen as the raw material for the asphalt overlay.
- Subjects
CONCRETE pavements; STRAINS &; stresses (Mechanics); THREE-dimensional imaging; FINITE element method; MECHANICAL loads
- Publication
Structural Concrete, 2019, Vol 20, Issue 2, p628
- ISSN
1464-4177
- Publication type
Article
- DOI
10.1002/suco.201700253