胡同旭;张拥军;赵敏;杨登峰;赵建锋;

• 1:青岛理工大学土木工程学院

摘要(Abstract)：

为了研究施工过程中箱形桥混凝土截面温度变化及温度梯度,利用ABAQUS软件建立箱梁段(A1,A4,A6)模型.利用现场采集的桥梁洞室内外环境温度作为温度场边界条件,对施工期间箱梁桥的不同截面混凝土温度进行模拟.选定2d进行全天桥梁温度监测,并对比模拟与实测数据.结果表明:当外部温度越高,内外温差越小时,混凝土内部梯度的差异越小,与中国、美国、新西兰相关规范拟合线越偏离,反之接近.研究施工中箱梁桥面板(暂未铺道砟)发现,现有中国规范(TB 10002.3—2005)中有砟混凝土梁桥温度幂指函数指数a上浮20%～40%后更接近施工中的温度梯度变化.

关键词(KeyWords)： 混凝土温度梯度;有限元模型;箱形梁桥截面

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51778314)

作者(Author): 胡同旭;张拥军;赵敏;杨登峰;赵建锋;

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DOI:

参考文献(References)：

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