首页|Structural optimization design of semi-rigid base asphalt pavement using modulus matching criterion and multi-indicator range analysis

Structural optimization design of semi-rigid base asphalt pavement using modulus matching criterion and multi-indicator range analysis

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Damage to semi-rigid base asphalt pavement is related to improper matching of the pavement structure moduli.This study mainly focused on the modulus matching of structural layers and the development of a pavement structure optimization method.First,the modulus loss of existing pavement structures was analysed,and a three-dimensional finite element model was established based on the existing pavement.Second,the influ-ence of the modulus of each structural layer on the mechanical response indicators and fatigue life was analysed.Based on the results,a pavement structure design method using the smoothness of the stress-strain curve as the modulus matching criterion of the structural layers was proposed.And it was found that a strain convex point was present and that the stress mutation between the structural layers was significant when the modulus matching of the pavement structure was reasonable.Further,the evaluation in-dicators were divided into two groups,namely,mechanical indicators and fatigue life in-dicators.And it was proposed an optimized pavement structure design method based on modulus matching and multi-indicator range analysis.Finally,the optimal modulus combination of pavement structure was determined by this method.The research sys-tematically studied the influence of the modulus of each structural layer on the mechan-ical response and fatigue life of the pavement,and proposed the concept and specific executive criteria of modulus matching for the first time.Meanwhile,it also provided an effective optimization method for pavement structure design.

Stress-strain curveModulus matchingStructural optimization designMulti-indicator range analysisFatigue life

Zhihao Yang、Linbing Wang、Dongwei Cao、Yinghao Miao、Hailu Yang

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China Airport Planning & Design Institute Co.,Ltd.,Beijing 101312,China

Department of Road and Urban Railway Engineering,Beijing University of Technology,Beijing 100124,China

National Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China

School of Environmental,Civil,Agricultural and Mechanical Engineering,University of Georgia,Athens,GA 30602,USA

China-Road Transportation Verification & Inspection Hi-Tech Co.,Ltd.,Beijing 100088,China

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National Key R&D Program of China

2019YFE0117600

2024

10.1016/j.jtte.2022.10.002

交通运输工程学报(英文版)

交通运输工程学报(英文版)

CSTPCD
ISSN：2095-7564
年,卷(期)：2024.11(1)
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