Experiment on temperature distribution of reinforced concrete box girder under asphalt high temperature paving

被引:0
|
作者
Liu, Qi-Wei [1 ]
Zhu, Jun [1 ]
Tang, Bei-Hua [2 ]
Cai, Yong-Sheng [1 ]
机构
[1] School of Transportation, Southeast University, Nanjing 210096, China
[2] Freeway Construction Headquarters of Jiangsu Province, Nanjing 210004, China
关键词
Asphalt - Concrete bridges - Reinforced concrete - Temperature distribution - Temperature sensors - Thermal gradients;
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中图分类号
学科分类号
摘要
The influence of the asphalt high temperature paving on temperature effect for the reinforced concrete box girder and the temperature difference distribution rule of the measuring points in box girder were investigated. Some temperature sensors were mined in the box girder web of a constructing continuous-reinforced concrete bridge. Then, authors measured measuring points temperatures by field tracking observation during the period of asphalt paving construction and obtained many data; analyzed the temperature distribution rule caused by asphalt paving in box girder; summarized temperature difference distribution rule of testing section; fitted temperature difference distribution curves of testing bridge. The result shows that influence depth of asphalt high temperature paving unsurpasses 50 cm which causes the high temperature gradient and produces bad influence on structure.
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页码:96 / 100
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