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[1] Luo Sang, Qian Zhendong, Wang Hui,. Condition survey and analysis of epoxy asphalt concrete pavementon Second Nanjing Yangtze River Bridge: a ten-year review [J]. Journal of Southeast University (English Edition), 2011, 27 (4): 417-422. [doi:10.3969/j.issn.1003-7985.2011.04.014]
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Condition survey and analysis of epoxy asphalt concrete pavementon Second Nanjing Yangtze River Bridge: a ten-year review()
南京第二长江大桥环氧铺装服役状况调研与分析 ——服役十年回顾
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
27
Issue:
2011 4
Page:
417-422
Research Field:
Traffic and Transportation Engineering
Publishing date:
2011-12-31

Info

Title:
Condition survey and analysis of epoxy asphalt concrete pavementon Second Nanjing Yangtze River Bridge: a ten-year review
南京第二长江大桥环氧铺装服役状况调研与分析 ——服役十年回顾
Author(s):
Luo Sang;  Qian Zhendong;  Wang Hui
Intelligent Transportation System Research Center, Southeast University, Nanjing 210096, China
罗桑;  钱振东;  王汇
东南大学智能运输系统研究中心, 南京 210096
Keywords:
steel bridge;  orthotropic decks;  cracking;  pothole;  survey
钢桥;  正交异性板;  裂缝;  坑洞;  调查
PACS:
U418.6
DOI:
10.3969/j.issn.1003-7985.2011.04.014
Abstract:
To obtain a complete picture of the epoxy asphalt pavement condition on the Second Nanjing Yangtze River Bridge, an on-site survey is conducted to collect information regarding traffic composition and extents of pavement distresses. The survey shows that 30 m2 out of the entire 3.8×104 m2 pavement exhibits potholes and alligator cracks. Other surface cracks are also found, including regular longitudinal cracks, short hairline cracks, bubble cracks, and ring cracks. Rutting and shoving are not observed on the pavement. The causes of pavement distresses are discussed by analyzing the pavement mechanical response with actual traffic composition. Research results indicate that the regular longitudinal cracks occurring at ribs near wheelpaths are due to fatigue damage. Short hair cracking and bubble cracking are mainly related to construction defects. Alligator cracks are the results of the development of regular, short hair and bubble cracks lacking effective maintenance. Potholes are induced by the cracking and moisture ingression.
为研究南京第二长江大桥环氧沥青混凝土铺装的服役性能, 对其进行了现场调研与分析, 包括铺装经受的交通量特征及铺装病害类型和程度等.调研观测发现:在3.8×104 m2的环氧铺装中, 坑洞与龟裂等严重病害面积大约30 m2;铺装层裂缝可分为纵向裂缝、短裂缝、鼓包裂缝、圆形裂缝等;车辙和推移病害在南京二桥铺装中未出现.根据现场调查的交通数据, 采用力学仿真模型对不同类型铺装病害的发生机理进行分析.分析结果显示:位于U肋肋顶、靠近轮迹带处的常规纵向裂缝是铺装疲劳损伤所致, 短裂缝与鼓包裂缝由铺装施工缺陷所致.裂缝未得到及时养护, 演变成龟裂.在行车荷载与动水压力的耦合作用下, 龟裂演变成坑洞.

References:

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Memo

Memo:
Biography: Luo Sang(1983—), male, doctor, lecturer, luosangseu@gmail.com.
Foundation item: The National Key Technology R& D Program during the 11th Five-Year Plan Period(No. 2009BAG15B03).
Citation: Luo Sang, Qian Zhendong, Wang Hui. Condition survey and analysis of epoxy asphalt concrete pavement on Second Nanjing Yangtze River Bridge: a ten-year review[J].Journal of Southeast University(English Edition), 2011, 27(4):417-422.[doi:10.3969/j.issn.1003-7985.2011.04.014]
Last Update: 2011-12-20