| 杭州江东大桥钢箱梁的日照温度梯度及顶推过程中末段梁的变形 |
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| 引用本文： | 李传习,杨宁,张玉平,董创文.杭州江东大桥钢箱梁的日照温度梯度及顶推过程中末段梁的变形[J].长沙交通学院学报,2009,25(1). |
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| 作者姓名： | 李传习 杨宁 张玉平 董创文 |
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| 作者单位： | 长沙理工大学,土木与建筑学院,湖南,长沙,410076 |
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| 摘 要： | 结合杭州江东大桥施工监控,根据实测资料,研究了钢箱梁温度场变化规律,给出了钢箱梁顶、底板温度梯度计算公式,分析了顶推过程中温度变化对末段梁标高或者转角的影响.结果表明,中国现行公路桥涵设计通用规范给出的钢梁截面的温度梯度模式,并不适应于无桥面铺装的情况.而且,中国现行的公路桥涵设计规范的温度梯度曲线是参照美国AASHTO规范而得,因日照、气候和气象等条件的不同,该曲线不完全切合中国的实际,需要适度修正.
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| 关 键 词： | 钢箱梁 温度场 顶推 |
The sunlight thermal gradient of the steel box girder and the deformation of the last girder in incremental launching construction of Hangzhou Jiangdong Bridge |
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| LI Chuan-xi,YANG Ning,ZHANG Yu-ping,DONG Chuang-wen.The sunlight thermal gradient of the steel box girder and the deformation of the last girder in incremental launching construction of Hangzhou Jiangdong Bridge[J].Journal of Changsha Communications University,2009,25(1). |
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| Authors: | LI Chuan-xi YANG Ning ZHANG Yu-ping DONG Chuang-wen |
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| Institution: | School of Civil Engineering and Architecture;Changsha University ofScience and Technology;Changsha 410004;China |
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| Abstract: | Combined with the construction control of Jiangdong Bridge,based on the date measured in site,the variation regulation of the temperature field of the steel box girder was investigated,formula for calculating the temperature of the top and bottom plate was given,and how the temperatue transformation affects the elevation or the rotation angle of the last girder in incremental launching construction was analyzed.The results show that,the thermal gradient model of steel box girder which is given by our countr... |
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| Keywords: | steel box girder temperature field incremental launching |
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