半刚性基层开裂的沥青路面承载力响应特性  

Response characteristics of asphalt pavement bearing capacity with cracked semi-rigid base

作　　者：杨美坤 李万鹏 黄卫明 张伟光[2] 祝铭阳 YANG Meikun;LI Wanpeng;HUANG Weiming;ZHANG Weiguang;ZHU Mingyang(Shandong Provincial Communication Planning and Design Institute Group Company Limited,Jinan 250000,China;School of Transportation,Southeast University,Nanjing 211189,China)

机构地区：[1]山东省交通规划设计院集团有限公司,山东济南250000 [2]东南大学交通学院,江苏南京211189

出　　处：《辽宁工程技术大学学报（自然科学版）》2024年第3期310-321,共12页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重点研发计划课题(2021YFB2601202);山东省交通运输厅科技计划项目(2022KJ109)。

摘　　要：为研究半刚性基层开裂对沥青路面承载力响应特性的影响,采用ABAQUS软件建立具有不同形态基层反射裂缝的沥青路面三维模型,研究其在载荷作用下的路面承载力响应特性,揭示响应机理。研究结果表明:反射裂缝越长,路面承载力响应越大。反射裂缝在贯穿路表前后,承载力响应由弱至强发生激增,反射裂缝只在一定宽度范围内影响承载力响应。给出了处治基层反射裂缝的指导建议,即结合现行方案,注意区分反射裂缝和面层裂缝,限制反射裂缝的发展。从长度、宽度、结构层位3个角度分析了反射裂缝对承载力响应特性的影响,仿真结果与现场实测结果相吻合,为研究半刚性基层沥青路面的承载力响应特性提供参考。In order to study the effect of semi-rigid base cracking on the bearing capacity response characteristics of asphalt pavement,ABAQUS software is used to establish a three-dimensional model of asphalt pavement with different types of base reflection cracks,and to study the bearing capacity response characteristics of the pavement under load,and reveal the response mechanism.The results show that the greater the length of reflective cracks,the greater the response of pavement bearing capacity.Before and after the reflection crack passes through the pavement,the bearing capacity response surges from weak to strong,and the reflection crack only affects the bearing capacity response within a certain width range.The suggestions for the treatment of reflection cracks are given,that is,according to the current scheme,attention should be paid to the distinction between reflection cracks and surface cracks to limit their development.The effect of reflection crack on the bearing capacity response is analyzed from the Angle of length,width and structure level.The simulation results are in agreement with the field measured results,which provides a reference for the study of bearing capacity response of semi-rigid asphalt pavement.

关 键 词：基层开裂 反射裂缝 沥青路面 半刚性基层 承载力响应特性 

分 类 号：U416[交通运输工程—道路与铁道工程]