| 预应力混凝土箱梁温度分布模式试验 |
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| 引用本文： | 李冠军,李建立,王炳禄,贾艳敏.预应力混凝土箱梁温度分布模式试验[J].低温建筑技术,2010,32(4):39-40. |
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| 作者姓名： | 李冠军 李建立 王炳禄 贾艳敏 |
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| 作者单位： | 东北林业大学土木工程学院,哈尔滨,150040 |
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| 基金项目： | 国家大学生创新性实验项目，东北林业大学本科生创新性实验项目 |
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| 摘 要： | 北方的钢筋混凝土桥梁尤其是大跨径连续梁桥,由于长期经受日照辐射,较大温差变化,以及混凝土导热性能较差等原因,将会在结构内部产生较大的温度应力,有时甚至比外活载产生的应力更大,从而使桥梁出现严重裂缝。本文以松浦大桥为依托,采用温度关键点进行分析,通过采集箱型梁的三个截面的温度数据,以分析获得其温度分布的规律,以便采取有效的措施减少或避免温度应力造成的破坏。
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| 关 键 词： | 箱型梁 温度传感器 温度分布 温度采集仪 |
THE EXPERIMENT PROGRAM OF THERMAL DISTRIBUTION IN PRESTRESSED CONCRETE BOX GIRDER BRIDGE |
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| LI Guan-jun,LI Jian-li,WANG Bing-lu,JIA Yan-min.THE EXPERIMENT PROGRAM OF THERMAL DISTRIBUTION IN PRESTRESSED CONCRETE BOX GIRDER BRIDGE[J].Low Temperature Architecture Technology,2010,32(4):39-40. |
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| Authors: | LI Guan-jun LI Jian-li WANG Bing-lu JIA Yan-min |
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| Affiliation: | LI Guan-jun,LI Jian-li,WANG Bing-lu,JIA Yan-min(School of Civil Engineering,Northeast Forestry University,Harbin 150040,China) |
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| Abstract: | The temperature stress which can lead to large crack turned up on bridge is generated in the reinforced concrete structure,having bad heat conductivity,with the big temperature difference.The temperature data in three cross sections of the Songpu bridge is collected and thermal distribution in the cross section is obtained by analyzing the data.Therefore,the damage resulted from the temperature stress can be controlled and avoided by taking effective measures. |
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| Keywords: | box girder temperature sensor thermal distribution temperature data collecting instrument |
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