| 日照作用下钢管混凝土桁拱温度场实测研究 |
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| 引用本文： | 陈宝春,刘振宇.日照作用下钢管混凝土桁拱温度场实测研究[J].中国公路学报,2011(3). |
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| 作者姓名： | 陈宝春 刘振宇 |
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| 作者单位： | 福州大学土木工程学院;华侨大学土木工程学院; |
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| 基金项目： | 福建省基础性研究计划重大项目(2003F007) |
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| 摘 要： | 通过对一座钢管混凝土桁拱肋截面布置温度测点并在现场布置小型气象站,进行了拱肋截面温度场的测试及气象资料的采集,对各弦管的温度分布进行了分析,并应用有限元法分析了各弦管的平均温度以及由此引起的温度应力。结果表明:桁拱各弦管的温度分布中,在与太阳升落方向平行的系列上,上、下弦管温度分布相近;在与太阳升落方向垂直的系列上,左、右弦管的温度分布接近;桁拱各弦管的温度分布及平均温度与单圆管接近,实际分析中可按单圆管来考虑;桁拱各弦管之间的平均温度相差较小,由其引起的温度应力也较小,弦管与腹管的温差对弦管和腹管的应力影响均较小,实际计算中可不考虑。
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| 关 键 词： | 桥梁工程 钢管混凝土 试验研究 温度场 温度应力 桁拱 |
Research on Thermal Field Test of Concrete Filled Steel Tubular Truss Arch Under Solar Radiation |
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| CHEN Bao-chun,LIU Zhen-yu.Research on Thermal Field Test of Concrete Filled Steel Tubular Truss Arch Under Solar Radiation[J].China Journal of Highway and Transport,2011(3). |
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| Authors: | CHEN Bao-chun LIU Zhen-yu |
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| Institution: | CHEN Bao-chun1,LIU Zhen-yu2(1.School of Civil Engineering,Fuzhou University,Fuzhou 350108,Fujian,China,2.School of Civil Engineering,Huaqiao University,Xiamen 361021,China) |
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| Abstract: | Through setting the thermal test points on section of concrete filled steel tubular(CFST) truss arch and the mini weather stations on site,the thermal field test on section of CFST truss arch rib and the meteorological data collection were carried out.The temperature distributions of chord member were analyzed.The average temperatures and the corresponding thermal stresses were also analyzed by finite element method.The result shows that temperature distributions of top and bottom chord members are similar ... |
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| Keywords: | bridge engineering concrete filled steel tube experimental research thermal field thermal stress truss arch |
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