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中南大学学报(自然科学版)

Journal of Central South University

第47卷    第8期    总第264期    2016年8月

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文章编号:1672-7207(2016)08-2828-07
基于使用性能的浇注式沥青混凝土设计
张肖宁1,陈剑华1, 2,邹桂莲1,樊钊甫1,曾利文1, 3,徐伟1

(1. 华南理工大学 土木与交通学院,广东 广州,510641;
2. 交通运输部公路科学研究院,北京,100088;
3. 广东交通实业投资公司,广东 广州,510623
)

摘 要: 针对钢桥面铺装浇注式沥青混凝土使用中容易出现的高温车辙、疲劳开裂问题,提出浇注式沥青混凝土“四阶段设计法”确保高温性能与疲劳性能的平衡;基于黏弹力学原理,提出动稳定度为浇注式沥青混凝土高温性能评价指标,通过大型加速加载试验进行验证其可靠性;基于断裂力学和能量法原理,提出冲击韧性为浇注式沥青混凝土疲劳性能评价指标,通过试验建立起冲击韧性和四点弯曲疲劳寿命的关系。研究结果表明:动稳定度可准确反映浇注式沥青混凝土高温抗变形能力;冲击韧性和疲劳性能之间有良好的线性相关性,采用冲击韧性能有效评价浇注式沥青混凝土疲劳性能。

 

关键词: 路面工程;沥青混凝土;“四阶段设计法”;加速加载试验;高温性能;动稳定度;疲劳性能;冲击韧性

Mastic asphalt concrete design based on application performance
ZHANG Xiaoning1, CHEN Jianhua1, ZOU Guilian1, FAN Zhaofu1, ZENG Liwen1, 2, XU Wei1

1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;
2. Highway Research Institute, MOC, Beijing 100088, China;
3. Guangdong Traffic Industrial Investment Company, Guangzhou 510623 China

Abstract:Rutting and fatigue cracking are common ticklish problems in the use of mastic asphalt on the steel bridge deck pavement. “Four stage design method” was put forward to ensure the balance between the high temperature performance and fatigue performance of mastic asphalt concrete. Based on the theory of viscoelastic mechanics, the dynamic stability was proposed to evaluate the high temperature performance of mastic asphalt, and its reliability was verified by the large accelerated loading test. On the basis of the principle of fracture mechanics and energy method, the impact toughness is presented to evaluate the fatigue performance of mastic asphalt, and the relationship between impact toughness and four-point bending fatigue life was set up by tests. The results show that the high temperature deformation resistance of mastic asphalt concrete can be accurately reflected by the dynamic stability; there is excellent linear relationship between the impact toughness and fatigue performance, and the fatigue performance of mastic asphalt can be effectively evaluated by the impact toughness.

 

Key words: pavement engineering; mastic asphalt; four-step design method; accelerated pavement testing; high temperature performance; dynamic stability; fatigue performance; impact toughness

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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