石家庄市三环路307国道东立交方案构思与设计

研究目的：通过对石家庄市三环路307国道东立交方案的构思，提出城市立交布置形式的建议。研究方法：采用东南大学刘洪波DICAD—PRO互通立交设计软件，并结合公路设计最新理念进行立交方案选型设计。研究结果：在城市立交桥设计中，应综合考虑交通量、周边地物、行车安全、拆迁征地、景观要求、施工方案等多种因素，争取做到功能、安全、造型及投资的协调。该立交设计紧凑、造型优美，与石家庄市日益蓬勃发展的精神风貌相协调。研究结论：城市立交设计必须与周边建筑、场地条件紧密结合。合理利用空间条件进行布设，同时要满足功能要求；设计要人性化，有良好的方向识别性，交通分析是立交设计的重要依据；采用合理的技术标准，以控制好立交的规模；选型应使桥梁结构合理、造型优美，并有适宜的施工方案。

Conception and Design of the Scheme for the Eastern Overpass across the National Road 307 on Loop Road 3 in Shijiazhuang

Research purposes: Based on the conception of the scheme for the eastern overpass across the national road 307 on loop road 3 in Shijiazhuang,the proposal is made for the arrangement form of city overpasses.Research methods:Based on the newest design concept for road,the type selection designs are made for the overpass by adopting design software DICAD-PRO for interchange overpass programmed by Liu Hong-bo of East Southern University.Research results:In the design of the overpass in city,the sectors of volume of traffic,surrounding surface features,travel safety,removal,requisition of land,landscape requirement and construction scheme should be taken into account for the coordination of the function,safety and style with the investment.This overpass design is tight design for beautiful bridge in style,which coordinates with raising spiritual outlook of Shijiazhuang.Research conclusions:The design of overpass in city should closely aim at the surrounding buildings and site conditions and make reasonable use of the space to arrange the overpass with meeting the functional requirements.The bridge should be designed in humanization with good directional identification marking,so the traffic analysis is a very important basis.The reasonable technological standards should be used for better control of the scale of overpass and the overpass with rational structure,beautiful style and suitable construction scheme should be selected.