立交匝道桥梁选型设计研究  

Research on Selection and Design of Interchange Ramp

作　　者：陈文超 吴怀强 李文勃 CHEN Wenchao;WU Huaiqiang;LI Wenbo

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海市200092

出　　处：《城市道桥与防洪》2022年第7期78-81,91,共5页Urban Roads Bridges & Flood Control

摘　　要：为研究钢混组合结构桥梁在立交匝道中运用的可行性及合理性,分析了钢板组合梁、槽形组合梁和窄边箱组合梁的结构性能;并结合日本的相关工程实例,对窄边箱组合梁和钢筋混凝土箱梁桥的经济指标进行了详细计算对比.结果表明:窄边箱组合梁最适宜于立交匝道桥梁工程,且当跨径布置为N×40 m时最具经济性.相比以往立交匝道桥梁工程中连续现浇钢筋混凝土箱梁桥,连续窄边箱组合梁造价预计可节省约20%,且综合性能更优.In order to study the feasibility and rationality of steel-concrete composite structural bridges applied in interchange ramp the structural performances of steel plate composite girder,groove-shape composite girder and narrow-side box composite girder are analyzed Combined with the related engineering cases in Japan,the economic indicators of narrow-side box composite girder and steel reinforced concrete box girder are calculated and compared in detail.The results show that the narrow-side box composite girder is mostly suitable for the interchange ramp bridge engineering:and the most economical span layout is arranged as N×40 m.Compared with the continuous cast-in-place reinforced concrete box girder bridges in the past interchange ramp bridge projects,the construction cost of continuous narrow-side box composite girder is expected to be saved by about 20%,and the overall performance is better.

关 键 词：组合梁 立交匝道 选型 窄边箱组合梁 经济指标 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]