预防性养护用薄层罩面疲劳破坏细观特性分析-学报杂志社

期刊信息

合肥工业大学（自然科学版），2026年4月，第49卷第4期：490-497

DOI: 10.3969/j.issn.1003-5060.2026.04.008

作者信息

田隽 $ ^{1} $，郭桂宏 $ ^{2} $，梁美君 $ ^{1} $，刘宪明 $ ^{2} $，卢晓锦 $ ^{3} $，赵全满 $ ^{3} $

(1. 山东高速股份有限公司，山东济南 250014；2. 山东高速工程检测有限公司，山东济南 250002；3. 山东建筑大学交通工程学院，山东济南 250101)

摘要和关键词

摘要: 为分析预养护后薄层罩面的疲劳破坏机理,文章通过室内试验与数值模拟相结合的方式,对含层间的沥青混合料试件进行三点弯曲破坏、三点弯曲疲劳试验。结果表明:宏、细观疲劳试验结果之间的差值在3%~5%,满足试验对误差的要求;薄层罩面的弯曲疲劳寿命与加载频率呈正相关,与荷载应力呈负相关;疲劳过程中裂缝分为萌芽、发展、扩展3个阶段,0.2 $ N_{f} $~ $ 0.8N_{f} $为裂缝发展阶段,这一阶段剪切型裂缝迅速发展;颗粒间的接触力链随着加载的进行逐渐断裂,且应力主要分布在裂缝顶端处;应力比越大、加载频率越低,加载初期因接触力链断裂而产生的滑移能增速越快。在薄层罩面的使用过程中,应注意避免前期性能损伤,以防止裂缝的快速扩展和耐久性的降低。

关键词: 道路工程；沥青混合料；三点弯曲疲劳试验；薄层罩面；PFC数值模拟方法；疲劳性能

Authors

TIAN Jun $ ^{1} $, GUO Guihong $ ^{2} $, LIANG Meijun $ ^{1} $, LIU Xianming $ ^{2} $, LU Xiaojin $ ^{3} $, ZHAO Quanman $ ^{3} $

(1. Shandong Hi-speed Co., Ltd., Jinan 250014, China; 2. Shandong Hi-speed Engineering Test Co., Ltd., Jinan 250002, China; 3. School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, China)

Abstract and Keywords

Abstract: To analyze the fatigue failure mechanism of thin overlay after pre-curing, this paper combines indoor test and numerical simulation to carry out three-point bending failure and three-point bending fatigue tests on asphalt mixture specimens with interlayer. The results show that the difference between macro and micro fatigue test results is between 3% and 5%, which meets the requirements of the test for error. The bending fatigue life of the thin overlay is positively correlated with the loading frequency and negatively correlated with the load stress. The cracks in the fatigue process are divided into three stages: germination, development and expansion. The interval from $ 0.2N_{f} $ to $ 0.8N_{f} $ is identified as the stage of crack development, and the shear cracks develop rapidly in this stage. The contact force chain between the particles gradually breaks with the loading, and the stress is mainly distributed at the top of the crack. The larger the stress ratio and the lower the loading frequency, the faster the growth rate of slip energy caused by the fracture of the contact force chain at the initial stage of loading. Therefore, in the process of using the thin overlay, attention should be paid to avoid the early performance damage, so as to prevent the rapid expansion of cracks and the decrease of durability.

Keywords: road engineering; asphalt mixture; three-point bending fatigue test; thin overlay; particle flow code(PFC) numerical simulation; fatigue performance

基金信息

国家自然科学基金资助项目(51808322); 山东省自然科学基金资助项目(ZR2018BEE039)和2020年山东高速路面养护科学决策体系与大数据可视化智能管理平台研发资助项目(HSB2020201)

合肥工业大学学报(自然科学版)

导航菜单

预防性养护用薄层罩面疲劳破坏细观特性分析