| 预应力设置方式对曲线梁桥扭矩的影响 |
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| 引用本文： | 江斌,张鲲,胡杜林,王国体.预应力设置方式对曲线梁桥扭矩的影响[J].合肥工业大学学报(自然科学版),2011(11):1706-1710. |
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| 作者姓名： | 江斌 张鲲 胡杜林 王国体 |
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| 作者单位： | 江苏省交通规划设计院股份有限公司;合肥工业大学土木与水利工程学院;安徽省交通规划设计研究院;中国有色第十二冶金建设公司; |
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| 基金项目： | 安徽省交通科学技术研究资助项目(2008-03) |
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| 摘 要： | 曲线梁桥的弯-扭耦合效应明显,文章以一工程实例为依托,采用有限元方法建立空间模型,分析在恒载、预应力作用下主梁的扭矩和支座反力分布,研究抗扭支座的预偏心和预应力的设置方式对主梁扭矩的影响,探索有效减少主梁扭矩的方法.结果表明,抗扭支座的预偏心对支座反力及下部结构的受力影响较大,预应力筋的不对称布置方式能改善恒载作用下曲...
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| 关 键 词： | 曲线梁桥 预应力 弯-扭耦合 支座预偏心 |
Influence of prestressing tendon layout on torsion moment of curved beam bridge |
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| JIANG Bin,ZHANG Kun,HU Du-lin,WANG Guo-ti.Influence of prestressing tendon layout on torsion moment of curved beam bridge[J].Journal of Hefei University of Technology(Natural Science),2011(11):1706-1710. |
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| Authors: | JIANG Bin ZHANG Kun HU Du-lin WANG Guo-ti |
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| Institution: | JIANG Bin1,2,ZHANG Kun3,HU Du-lin4,WANG Guo-ti2(1.Jiangsu Provincial Communications Planning and Design Institute Co.,Ltd.,Nanjing 211100,China,2.School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,3.Anhui Communications Consulting and Design Institute,Hefei 230088,4.The 12th Metallurgical Construction Corporation of China National Nonferrous Metals Industry,Hejin 043304,China) |
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| Abstract: | The bending-torsion coupling effect of curved beam bridge is obvious.In this paper,based on a project case,a spatial model is established by using the finite element method.Torsion moment and bearing reaction force distribution of the primary beam under the action of dead weight and prestess are analyzed,the effects of bearing pre-eccentricity and the layout of prestressing tendon on the beam torsion moment are studied,and the effective ways to reduce the torsion moment are explored.The results show that th... |
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| Keywords: | curved beam bridge prestress bending-torsion coupling bearing pre-eccentricity |
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