复杂交通条件下互通立交施工方案设计及比选  

Design and Comparison of Interchange Construction Schemes under Complex Traffic Conditions

作　　者：韩娟 HAN Juan(China Railway Seventeen Bureau Group Third Engineering Co.,Ltd.,Shijiazhuang 050081,China)

机构地区：[1]中铁十七局集团第三工程有限公司,石家庄050081

出　　处：《价值工程》2022年第15期67-69,共3页Value Engineering

摘　　要：本文介绍了跨国道互通立交施工。通过对互通立交跨国道节点方案设计,制定三处跨国道匝道桥施工方案并进行经济性比选。根据不同位置及墩身高度制定了盘口支架+螺旋管支架结合的现浇方案。根据工期安排,控制周转材料投入,降低施工成本。分析了互通立交节点施工方案对立项投标、施工准备、组织施工、竣工验收全过程的影响因素。为公路工程中跨繁忙国道复杂条件下互通立交施工提供参考。This paper introduces the construction of interchange across national highway.Through the scheme design of interchange crossing national highway nodes,the construction schemes of three transnational ramp bridges are formulated and compared economically.According to different positions and pier body height,the cast-in-situ scheme of the combination of coil support and spiral pipe support is formulated.According to the schedule,control the input of revolving materials and reduce the construction cost.This paper analyzes the influencing factors of interchange node construction scheme on the whole process of project approval and bidding,construction preparation,construction organization and completion acceptance.It provides a reference for the construction of interchange under complex conditions across busy national highways in highway engineering.

关 键 词：互通立交 方案比选 盘口支架 螺旋管支架 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]