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Aug 12, 2020
Effects of Vehicle Loads and Structure Combinations on Rutting Depth of Asphalt Pavements with Varied Base Layers in Toll Plazas
Authors: Yan Li [email protected], Yanlong Han [email protected], Yuanbo Cao [email protected], Jiupeng Zhang [email protected], Fuyu Wang [email protected], Liantian Gao [email protected], and Tian Qu [email protected]Author Affiliations
Publication: CICTP 2020
ABSTRACT
Asphalt pavements are increasingly used in toll plazas but may generate significant rutting depth due to unique load characteristics such as canalized traffic, slow vehicles, and frequent braking. Rutting factors of asphalt-paved toll plazas were analyzed by load, vehicle speed, base type, and thickness. 3D FEM simulations were performed for four base layer types by applying time-hardening creep modeling and equivalent temperature field in Changchun, China. Results show asphalt pavement rutting depth in toll plazas increases under combined action of slow vehicle speed, additional horizontal load, and weight. With 360 mm fixed base layer, rutting depth of flexible base is largest, followed by combined, rigid, and semi-rigid. Asphalt pavement rutting depths remain stable when rigid base exceeds 300 mm and semi-rigid exceeds 360 mm. Rutting depth of asphalt pavements with flexible or combined base exceeds those of semi-rigid and rigid base ranging from 180 to 360 mm but not when base layer exceeds 420 mm.
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© 2020 American Society of Civil Engineers.
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Published online: Aug 12, 2020
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1School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China. Email: [email protected]
2School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China. Email: [email protected]
3School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China. Email: [email protected]
4School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China. Email: [email protected]
5School of Transportation, Jilin Univ., Changchun, Jilin 130012, China. Email: [email protected]
6Jilin Yusong Expressway Co. Ltd., Changchun, Jilin 130000, China. Email: [email protected]
7Assistant Engineer, T. Y. Lin International Engineering Consulting (China) Co. Ltd., Chongqing 401120, China. Email: [email protected]
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