104国道湖州五一大桥改建方案浅析  

Analysis of Reconstruction Scheme of Wuyi Bridge in Huzhou National Road 104

作　　者：梁战 丁武全 李靓 吴金莲 边迪 LIANG Zhan;DING Wuquan;LI Liang;WU Jinlian;BIAN Di(Zhejiang Transportation Planning and Design Institute Co.,Ltd.,Hangzhou 310000)

机构地区：[1]浙江省交通规划设计研究院有限公司,杭州310000

出　　处：《公路交通技术》2021年第1期81-89,共9页Technology of Highway and Transport

摘　　要：以104国道湖州五一大桥改建工程为例,对机动车、非机动车与行人出行需求进行综合梳理,并结合交通流向、地形地物、断面布置、用地条件、匝道和非机动道展线、桥下空间利用、避免交织、行车安全、造价等实际情况,灵活把握设计指标,提出了3种设计方案。经多方面综合比选后,以方案1双环展线式菱形互通为推荐方案。该方案采用机非分离式桥梁断面,避免不同类型交通的行车交织,沿河地形利用环形匝道展线克服纵面高差,提高了行车安全,具有较强的实践性和指导性。Taking the reconstruction project of Huzhou Wuyi bridge on National Road 104 as an example,travelling demands of motor vehicles,non-motor vehicles and pedestrians are comprehensively sorted out.Combined with the actual situations of traffic flow direction,terrain features,section layout,land use conditions,ramp and non-motorized road extension,space utilization under the bridge,avoiding interweaving,driving safety and cost,three design schemes are put forward.After comprehensive comparison and selection in many aspects,diamond interchange scheme with double rings line expansion of scheme 1 is taken as recommended scheme.In this scheme,the separated bridge section of motor vehicles and non-motor vehicles is used to avoid the interweaving of different types of traffic.The circular ramp is used to expand the line along the river to overcome the vertical height difference,which improves the traffic safety,and has strong practicality and guidance.

关 键 词：改建工程 互通立交 交通流向 技术标准 断面布置 避免交织 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]