| 预应力桁架在青州桥箱梁现浇施工中的应用研究 |
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| 引用本文： | 刘钟仁,刘永前,高亮.预应力桁架在青州桥箱梁现浇施工中的应用研究[J].国防交通工程与技术,2008,6(2):32-35. |
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| 作者姓名： | 刘钟仁 刘永前 高亮 |
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| 作者单位： | 1. 石家庄铁道学院大型结构健康诊断与控制研究所,河北,石家庄,050043;河北省大型结构健康诊断与控制重点实验室,河北,石家庄,050043
2. 石家庄铁道学院土木工程分院,河北,石家庄,050043 |
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| 摘 要： | 提出一种利用预应力桁架作为箱梁现浇施工膺架来进行高墩大跨箱梁现浇施工的新方法,该方法通过对普通钢桁架增加撑杆和连杆并施加预应力,可显著提高桁架的强度和刚度.介绍了该桁架的设计与计算方法,并结合福州市马尾区青州五联连续刚构高架桥的施工进行了实践验证,对桥梁施工和钢结构设计都有借鉴意义.
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| 关 键 词： | 预应力连杆式桁架 箱梁现浇 膺架 高墩大跨 |
| 文章编号： | 1672-3953(2008)02-0032-04 |
| 修稿时间： | 2007年12月24 |
Research into the Application of Pre-Stressed Trusses to the Construction of Cast-in-Place Box Girders of the Qingzhou Viaduct |
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| Liu Zhongren,Liu Yongqian,Gao Liang.Research into the Application of Pre-Stressed Trusses to the Construction of Cast-in-Place Box Girders of the Qingzhou Viaduct[J].Traffic Engineering and Technology for National Defence,2008,6(2):32-35. |
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| Authors: | Liu Zhongren Liu Yongqian Gao Liang |
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| Institution: | Liu Zhongren1,2,Liu Yongqian1,Gao Liang3(1.Structural Health Monitoring , Control Institute,Shijiazhuang Railway Institute,Shijiazhuang 050043,China,2. Key Laboratory of Structural Health Monitoring , Control of Hebei Province,3.School of Civil Engineering,China) |
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| Abstract: | The new construction method of using pre-stressed trusses as formwork for the construction of cast-in-place box girders of tall-pier and big-span bridges is presented in the paper, in which case the truss will be strengthened with arm-ties and connecting bars, and pre-stressed, which will markedly improve its strength and rigidity. The design and calculations of the truss are also dealt with in the paper, with the construction of the Qingzhou five continuous rigid viaduct located in Mawei District of Fuzhou... |
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| Keywords: | truss with pre-stressed bars construction of cast-in-place box girders formwork tall piers and long spans |
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