| 大吨位小半径环向预应力钢束张拉伸长量综合分析法 |
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| 引用本文： | 万利军,单炜.大吨位小半径环向预应力钢束张拉伸长量综合分析法[J].公路交通科技,2011,28(6):97-102,121. |
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| 作者姓名： | 万利军 单炜 |
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| 作者单位： | 东北林业大学,土木工程学院,黑龙江,哈尔滨,150040 |
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| 基金项目： | 黑龙江省交通厅重点科技项目 |
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| 摘 要： | 为研究大吨位小半径环向预应力钢束的孔道摩阻系数及钢束伸长值理论计算方法,以哈尔滨四方台斜拉桥为研究对象,进行索塔锚固区节段足尺模型试验及张拉工艺试验.通过试验现象观测、数据分析及孔道局部解剖,系统地分析了影响张拉伸长量的主要因素.研究结果表明:基于最小二乘原理的多变量数据拟合技术为分束计算μ值提供了可靠依据;引入等效束...
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| 关 键 词： | 桥梁工程 理论伸长值 试验研究 小半径预应力束 索塔锚固区 |
Comprehensive Analytical Method of Tensioning Elongation of Great Tonnage and Small Radius Annular Prestressing Tendons |
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| WAN Lijun,SHAN Wei.Comprehensive Analytical Method of Tensioning Elongation of Great Tonnage and Small Radius Annular Prestressing Tendons[J].Journal of Highway and Transportation Research and Development,2011,28(6):97-102,121. |
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| Authors: | WAN Lijun SHAN Wei |
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| Institution: | WAN Lijun,SHAN Wei(School of Civil Engineering,Northeast Forestry University,Harbin Heilongjiang 150040,China) |
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| Abstract: | In order to study the tube frictional resistance of great tonnage and small radius annular prestressing tendons and the theoretical calculation method of tendons elongation,the full-scale model test and tensioning craft experiment for the cable-pylon anchorage zone was made based on the Sifangtai cable-stayed bridge in Harbin.The principle influencing factors of tensioning elongation were analyzed systematically through test phenomenon observation,data analysis and partial dissection of tube.The research re... |
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| Keywords: | bridge engineering theoretical elongation experimental study small radius prestressing tendon cable-pylon anchorage zone |
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