| 匝道桥的计算方法及设计要点 |
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| 引用本文： | 万莉.匝道桥的计算方法及设计要点[J].现代交通技术,2009,6(2):47-50. |
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| 作者姓名： | 万莉 |
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| 作者单位： | 江苏省交通科学研究院,长大桥梁健康检测与诊断技术交通行业重点试验室,江苏,南京,210017 |
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| 摘 要： | 高等级公路互通立交中的匝道桥由于受线形及纵坡限制具有斜、弯、坡、异形等特点。故相比于直梁桥的“弯、剪”作用，匝道桥处于“弯、剪、扭”的复合受力状态。在结构计算时应考虑复合受力状态；设计的上、下部结构也应采取有利于“弯、剪、扭”的措施。文章结合具体工程实际，介绍此类桥梁的结构计算方法及主要设计要点，以供设计人员参考。
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| 关 键 词： | 匝道桥 结构计算 设计要点 |
Calculation Methods and Design Key Points for Ramp Bridges |
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| Wan Li.Calculation Methods and Design Key Points for Ramp Bridges[J].Modern Transportation Technology,2009,6(2):47-50. |
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| Authors: | Wan Li |
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| Institution: | Jiangsu Transportation Research Institute Key Laboratory of Huge Bridge Health Detection and Diagnostic Technology of Communications;Nanjing 210017;China |
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| Abstract: | Owing to restriction from geometry and longitudinal slope,ramp bridges of high grade highway interchange projects are featuring inclination,bending,slope and abnormality.In contrast with bending-shear action to straight girder bridges,ramp bridges are subjected to combined action of bending-shear-torsion,which will be taken into account during performing structural calculations.Moreover,superstructure and substructure shall be designed in such a way that it is in favor of resisting combined action of bendin... |
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| Keywords: | ramp bridges structural calculations key design point |
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