| 万莉.匝道桥的计算方法及设计要点[J].现代交通技术,2009,(2): |
| 匝道桥的计算方法及设计要点 |
| Calculation Methods and Design Key Points for Ramp Bridges |
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| DOI： |
| 中文关键词: 匝道桥 结构计算 设计要点 |
| 英文关键词:ramp bridges structural calculations key design point |
| 基金项目: |
| 万莉 |
| 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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| 中文摘要: |
| 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. |
| 英文摘要: |
| 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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