| 大跨径预应力混凝土箱梁桥温度效应 |
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| 引用本文： | 张俊峰.大跨径预应力混凝土箱梁桥温度效应[J].交通科技,2011(4). |
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| 作者姓名： | 张俊峰 |
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| 作者单位： | 武汉市东西湖区公路管理局; |
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| 摘 要： | 通过在中部地区某大跨径预应力桥梁箱梁桥典型截面埋设温度传感器及应变计,对箱梁截面温度场及温度效应连续观测,掌握公路大跨径预应力混凝土箱梁桥顶、底板温度分布规律,推出适合中部高温环境下的箱梁温度梯度模式,并将有限元计算值与现场实际温度效应测量数据进行对比分析,证明现场温度梯度推导公式的合理性,进而给出适合中部高温环境地区桥梁温度梯度的合理模式。
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| 关 键 词： | 预应力箱梁 温度效应 温度梯度 高温环境 |
Temperature Effect of Long Span Prestressed Concrete box Girder Bridge |
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| Zhang Junfeng.Temperature Effect of Long Span Prestressed Concrete box Girder Bridge[J].Transportation Science & Technology,2011(4). |
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| Authors: | Zhang Junfeng |
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| Institution: | Zhang Junfeng(Wuhan West-East Lake District Road Management Department,Wuhan 430030,China) |
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| Abstract: | Through burying temperature sensor and strain gauge in the typical section of a long-span prestressed concrete box girder in central China,section temperature field and temperature effect was continuously observed,the temperature distributions of the roof and floor of long-span prestressed concrete box girder bridge is grasped,suitable gradient model of temperature environment in central China of box girder were put forward,and the finite element calculation value and the actual temperature was compared,whi... |
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| Keywords: | prestressed box girder temperature effect temperature gradient high temperature environment |
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