| 钢箱拱桥中CFRP系杆受力性能试验研究 |
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| 引用本文： | 白成荣.钢箱拱桥中CFRP系杆受力性能试验研究[J].湖南城市学院学报(自然科学版),2011,20(2):5-9. |
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| 作者姓名： | 白成荣 |
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| 作者单位： | 中铁十二局集团第二工程有限公司,太原,030032 |
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| 摘 要： | 结合怀化某大桥,按照相似原理,建立了碳纤维系杆拱桥缩尺试验模型,对其受力性能进行了试验研究;并采用空间有限元分析软件Midas/Civil对模型桥使用阶段各工况进行了空间模拟分析.试验结果表明:CFRP系杆拉力和拱脚水平位移的实测结果与有限元分析结果基本吻合;用有限元程序的计算分析结果指导模型桥测点选取和加载等工作是可行的,其分析结果是正确的;CFRP作为系杆其总预应力损失率的最大测量值为2.1%,预应力损失较小,其预应力值稳定.
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| 关 键 词： | 碳纤维 系杆 模型实验 系杆拱桥 |
Experimental Study on the Mechanical Property of CFRP Tie Bars at Box Tied-arch Bridge |
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| BAI Cheng-rong.Experimental Study on the Mechanical Property of CFRP Tie Bars at Box Tied-arch Bridge[J].Journal of Hunan City University:Natural Science,2011,20(2):5-9. |
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| Authors: | BAI Cheng-rong |
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| Institution: | BAI Cheng-rong(The 2nd Engineering Co.Ltd of the 12th Bureau Group of China Railway,Taiyuan 030032,China) |
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| Abstract: | In this paper,based on the bridge in Huaihua,according to similarity principle,a scaled test model for arch bridge with carbon fiber reinforced plastic is established to study the mechanical characteristics.And the spatial finite element analysis software Midas Civil is used to simulate every condition for model bridge in service phase.Results showed that: the measurement results of CFRP tie bars tension and arch feet horizontal displacement coincide with the finite element analysis ones.This showes that it is feasible to guide loading and to select loading point by the finite element analysis program,the analysis results are correct.The maximum measured value of CFRP tie bars prestressing loss rate is 2.1%.The loss of prestress is small.Their prestressed values are stability. |
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| Keywords: | carbon Fiber Reinforced Polymer(CFRP) tied model experiment tied-arch bridge |
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