| 钢管混凝土桁拱热脱粘及温度应力分析 |
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| 引用本文： | 刘振宇,陈宝春. 钢管混凝土桁拱热脱粘及温度应力分析[J]. 公路交通科技, 2011, 28(7): 67-72 |
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| 作者姓名： | 刘振宇 陈宝春 |
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| 作者单位： | 1. 华侨大学土木工程学院，福建厦门36102
2. 福州大学土木工程学院,福建福州,350108 |
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| 基金项目： | 华侨大学科研基金项目(10BS318) |
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| 摘 要： | 以一座钢管混凝土桁拱为工程背景,结合气象资料,应用有限元方法对拱肋弦管的热脱粘情况和温度应力进行了分析.分析结果表明,自然环境温度变化下,钢管混凝土桁拱弦管容易发生脱粘；各弦管由于日照作用及混凝土灌注时间的不同,脱粘的情况也不尽相同,脱粘一般发生在日照较为强烈、温度梯度较大的面上；脱粘使得钢管混凝土桁拱的温度次内力减小...
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| 关 键 词： | 桥梁工程 热脱粘 温度应力 有限元 钢管混凝土 桁拱 |
Analysis on Thermal Debonding and Stress of CFST Truss Arch |
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| LIU Zhenyu,CHEN Baochun. Analysis on Thermal Debonding and Stress of CFST Truss Arch[J]. Journal of Highway and Transportation Research and Development, 2011, 28(7): 67-72 |
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| Authors: | LIU Zhenyu CHEN Baochun |
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| Affiliation: | LIU Zhenyu 1,CHEN Baochun 2(1.School of Civil Engineering,Huaqiao University,Xiamen Fujian 361021,China,2.School of Civil Engineering,Fuzhou University,Fuzhou Fujian 350108,China) |
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| Abstract: | Combined with the meteorological data,taken a concrete filled steel tubular(CFST) truss arch bridge as basic analysis case,the thermal debonding and the thermal stress were analyzed by finite element method.The analysis result shows that(1) debonding may easily happen in chord section under the action of temperature variation;(2) thermal debonding of each chord is different because of the different solar radiation and the different time of pouring concrete,debonding may always happen in the face with high t... |
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| Keywords: | bridge engineering thermal debonding thermal stress FEA concrete filled steel tube truss arch |
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