[1]钱振东,刘阳,刘龑.高温浇注环境下钢桥面温度场及温度变形效应分析[J].东南大学学报(自然科学版),2014,44(5):1024-1029.[doi:10.3969/j.issn.1001-0505.2014.05.026]
 Qian Zhendong,Liu Yang,Liu Yan.Temperature field and thermal deformation of steel bridge deck during gussasphalt pavement paving[J].Journal of Southeast University (Natural Science Edition),2014,44(5):1024-1029.[doi:10.3969/j.issn.1001-0505.2014.05.026]
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高温浇注环境下钢桥面温度场及温度变形效应分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第5期
页码:
1024-1029
栏目:
交通运输工程
出版日期:
2014-09-20

文章信息/Info

Title:
Temperature field and thermal deformation of steel bridge deck during gussasphalt pavement paving
作者:
钱振东刘阳刘龑
东南大学智能运输系统研究中心, 南京 210096
Author(s):
Qian Zhendong Liu Yang Liu Yan
Intelligent Transport System Research Center, Southeast University, Nanjing 210096, China
关键词:
数值模拟 摊铺温度场 温度荷载公式 温度变形效应
Keywords:
numerical simulation paving temperature field temperature load equation effect of thermal deformation
分类号:
U443.33
DOI:
10.3969/j.issn.1001-0505.2014.05.026
摘要:
采用数值模拟的方法研究浇注式沥青混凝土摊铺时钢桥面摊铺温度场及温度变形效应.建立钢箱梁温度场模型,对浇注式沥青混凝土摊铺过程中钢桥面温度场分布规律进行了数值模拟,拟合出最不利温度荷载公式.根据时空等效原理建立考虑施工过程的温度荷载公式,计算钢桥面板的局部温度变形,并分析其对铺装效果的影响.研究结果表明,摊铺10min后钢板局部迅速升温至120℃,并在17min后达到最大温度123℃,此阶段摊铺温度对钢板结构的影响较大;摊铺区域钢板会产生局部温度变形,最大竖向变形达到7.5mm,使摊铺层局部厚度有偏差,模拟值接近1mm.
Abstract:
The temperature field and thermal deformation of steel bridge deck during gussasphalt pavement paving are studied by the numerical simulation technology. A temperature field model of steel box girder is established to analyze the temperature distribution law of steel bridge deck during gussasphalt pavement paving, and the worst temperature load equation is fitted subsequently. The temperature load equation considering the construction process is established based on the time-space equivalence principle. The local thermal deformation of the steel bridge deck is calculated, and the effect of thermal deformation on the pavement is discussed. Research results show that the paving temperature has a great effect on the steel bridge deck. After 10min of paving, the local temperature of steel bridge deck reaches 120℃, and reaches a maximum of 123℃ after 17min. Local temperature deformation appears in the steel bridge deck plate, and the maximum vertical displacement is 7.5mm. This can lead to the thickness discrepancy of pavement, with a simulation value close to 1mm.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-04-11.
作者简介: 钱振东(1969—),女,博士,教授,博士生导师,qianzd@seu.edu.cn.
基金项目: “十一五”国家科技支撑计划资助项目(2009BAG15B03)、国家自然科学基金资助项目(51378122).
引用本文: 钱振东, 刘阳, 刘龑.高温浇注环境下钢桥面温度场及温度变形效应分析[J].东南大学学报:自然科学版,2014,44(5):1024-1029. [doi:10.3969/j.issn.1001-0505.2014.05.026]
更新日期/Last Update: 2014-09-20