| 大跨梁桥悬臂施工期间温度效应监测与分析 |
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| 引用本文： | 张通.大跨梁桥悬臂施工期间温度效应监测与分析[J].兰州理工大学学报,2011(4). |
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| 作者姓名： | 张通 |
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| 作者单位： | 三门峡市公路局; |
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| 摘 要： | 分析大型桥梁施工期间温度对主梁线形的影响.以主梁悬臂施工中的某大桥为工程依托,进行温度场实验.同步测量箱梁多点的温度和主梁各测点的挠度,将温度场实验总结出的箱梁的温度梯度作用于T构的主梁,将挠度的计算结果与实测结果进行比较.发现理论计算中T构两侧对称测点的挠度基本相等,而实际测量中则出现了不对称下挠.温度梯度会使悬臂施工中的主梁产生较大的挠度,临时支墩温度场会引起T构两侧悬臂的不对称下挠.
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| 关 键 词： | 桥梁 温度梯度 挠度 线性控制 |
Monitoring and analysis of temperature effect during cantilever construction of long span girder bridge |
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| ZHANG Tong.Monitoring and analysis of temperature effect during cantilever construction of long span girder bridge[J].Journal of Lanzhou University of Technology,2011(4). |
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| Authors: | ZHANG Tong |
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| Institution: | ZHANG Tong(Highway Bureau of Sanmenxia City,Sanmenxia 472000,China) |
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| Abstract: | The influence of temperature appearing during the construction of large-scale bridges on the linear of their main girder was analyzed.Taking the main girder cantilever of a large-scale bridge in its construction as an illustrative engineering,the temperature field experiment was performed.The temperature of multiple points in the box girder and the deflection of each corresponding point of the main girder was synchronously measured.The temperature gradient in the box girder derived from the temperature fiel... |
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| Keywords: | bridge temperature gradient deflection linear controll |
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