船山东路东航道桥矮塔斜拉桥设计研究

Design and Research on the Short Tower Cable stayed Bridge of Chuanshan East Road East Channel Bridge

为进一步研究矮塔斜拉桥设计技术,以衡阳船山东路东航道桥为依托,介绍该桥的总体设计、主梁设计、主塔与主墩设计、斜拉索设计、索鞍设计、结构分析等。主桥采用(120+200+120)m矮塔斜拉桥结构,墩梁塔固定体系,主梁采用单箱三室箱梁,桥面全宽30.7 m。对该种桥型结构体系进行了总结,与具有相同跨径的连续刚构桥相比,降低了梁的高度,从而提高了主梁的应力,可为今后类似项目提供参考。

To further study the design technology of low tower cable-stayed bridges,based on the Hengyang Chuanshan East Road East Channel Bridge,this paper introduces the overall design,main beam design,main tower and pier design,inclined cable design,cable saddle design,structural analysis,etc.of the bridge.The main bridge adopts a(120+200+120)m low tower cable-stayed bridge structure,with a fixed system of piers,beams,and towers.The main beam adopts a single box three room box girder,with a total width of 30.7 meters on the bridge deck.A summary of this type of bridge structure system was conducted,and compared with continuous rigid frame bridges with the same span,the height of the beam was reduced,thereby increasing the stress of the main beam,which can provide reference for similar projects in the future.