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Title:

Study of Structural Characteristics of Asphalt Overlays on Airport Pavement with Damaged Load Transfer Efficiency of Joints

Accession Number:

01789259

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/issn/03611981

Abstract:

In this paper, the real joint load transfer efficiency of airport pavement is calculated by combining the results of airport pavement deflection detection and ground-penetrating radar detection. Spring elements are used to simulate the actual load transfer efficiency of joints in ABAQUS. The impact of different asphalt overlays on the stress state of the critical point in the pavement is analyzed by the airport cement concrete pavement model. The result shows that adding a thin stress-absorbing layer with fine-graded and low modulus can effectively disperse the load transferred from the asphalt pavement to the cement pavement and the stress concentration at the joint under the asphalt overlay. Compared with airport pavement without a stress-absorbing layer, the tensile stress and shear stress at the critical point in the airport pavement asphalt overlay decreased by 24.62% and 22.49%, respectively. Therefore, the combination of the high-modulus upper layer and low-modulus lower layer can effectively reduce the tensile stress and shear stress at the critical point. In addition, increases in the thickness of the asphalt overlay can effectively improve the stress state at the critical point. When the thickness of the asphalt overlay changed from 13?cm to 21?cm, the maximum tensile and shear stress decreased by 8.82% and 8.92%, respectively. Finally, based on the analysis of the numerical simulation and field test verification, the optimal airport pavement asphalt overlay scheme is proposed.

Supplemental Notes:

Kaifeng Wang https://orcid.org/0000-0002-2298-7411 © National Academy of Sciences: Transportation Research Board 2021.

Language:

English

Authors:

Wang, Kaifeng

ORCID 0000-0002-2298-7411

Wang, Kai
Zhu, Yunsheng
Bao, Yunhan
Fang, Zhou

Pagination:

pp 27-40

Publication Date:

2022-4

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Volume: 2676
Issue Number: 4
Publisher: Sage Publications, Incorporated
ISSN: 0361-1981
EISSN: 2169-4052
Serial URL: http://journals.sagepub.com/home/trr

Media Type:

Web

Features:

References (31)

Identifier Terms:

ABAQUS (Computer program)

Subject Areas:

Aviation; Design; Maintenance and Preservation; Pavements

Files:

TRIS, TRB, ATRI

Created Date:

Nov 19 2021 3:15PM