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

作     者：Zhihao Yang Linbing Wang Dongwei Cao Yinghao Miao Hailu Yang Zhihao Yang;Linbing Wang;Dongwei Cao;Yinghao Miao;Hailu Yang

作者机构：China Airport Planning&Design Institute Co.Ltd.Beijing 101312China Department of Road and Urban Railway EngineeringBeijing University of TechnologyBeijing 100124China National Center for Materials Service SafetyUniversity of Science and Technology BeijingBeijing 100083China School of EnvironmentalCivilAgricultural and Mechanical EngineeringUniversity of GeorgiaAthensGA 30602USA China-Road Transportation Verification&Inspection Hi-Tech Co.Ltd.Beijing 100088China 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2024年第11卷第1期

页      面：131-159页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 0823[工学-交通运输工程] 

基　　金：supported by grant from the National Key R&D Program of China(2019YFE0117600). 

主　　题：Stress-strain curve Modulus matching Structural optimization design Multi-indicator range analysis Fatigue life 

摘      要：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 influence 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 indicators were divided into two groups,namely,mechanical indicators and fatigue life indicators.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 systematically studied the influence of the modulus of each structural layer on the mechanical 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.