| 考虑预应力的悬臂浇筑拱桥温度荷载效应下主拱圈受力行为研究 |
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| 引用本文： | 孙波,田仲初.考虑预应力的悬臂浇筑拱桥温度荷载效应下主拱圈受力行为研究[J].公路工程,2020(3):8-12,66. |
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| 作者姓名： | 孙波 田仲初 |
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| 作者单位： | 湖南交通国际经济工程合作有限公司;长沙理工大学土木工程学院 |
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| 基金项目： | 国家自然科学基金项目(51478049)。 |
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| 摘 要： | 以某悬臂浇筑施工拱桥为研究对象,通过建立ANSYS有限元模型,研究温度荷载和预应力荷载耦合作用下拱圈截面应力变化规律。计算结果表明:拱圈截面应力与整体升/降温、顶底板温度差、扣索与混凝土主拱圈温差基本呈正相关关系,同时预应力可有效改善温度应力的分布规律。
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| 关 键 词： | 悬臂浇筑拱桥 整体升/降温 顶底板温差 扣索与主拱圈温差 截面应力 |
Study on the Behavior of the Main Arch Ring Under the Effect of Temperature Load of Cantilever Casting Arch Bridge Considering Prestress |
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| SUN Bo,TIAN Zhongchu.Study on the Behavior of the Main Arch Ring Under the Effect of Temperature Load of Cantilever Casting Arch Bridge Considering Prestress[J].Highway Engineering,2020(3):8-12,66. |
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| Authors: | SUN Bo TIAN Zhongchu |
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| Institution: | (Hunan Transportation International Economic Engineering Cooperation Co.,Ltd.,Changsha,Hunan 410005,China;School of Civil Changsha University of Science and Technology,Engineering Changsha Hunan 410015,China) |
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| Abstract: | Taking a cantilever casting construction arch bridge as the research object,the ANSYS finite element model is established to study the stress variation law of the arch ring section under the coupling of temperature load and prestressed load.The calculation results show that the stress of the arch ring is basically positively correlated with the overall rise/fall temperature,the temperature difference between the top and bottom plates,and the temperature difference between the buckle and the main arch ring of the concrete.At the same time,the prestress can effectively improve the distribution of temperature stress. |
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| Keywords: | cantilevered arch bridge overall rise/lower temperature top and bottom plate temperature difference temperature difference between the buckle and the main arch ring sectional stress |
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