城市高架快速路匝道落地段设计探讨

上下桥匝道联系城市高架快速路及地面路网,是充分发挥快速路功能及缓解地面路网交通压力的必要手段。但匝道引桥往往对地面交通组织造成很大干扰,如果设置不当,将导致地面交通混乱,沿线地块出行受阻,关键道口堵塞,还有可能削弱快速路的服务能力。因此必须结合实际情况和交通需求,合理选择匝道落地段布置方式并对相关地面道口的交通组织进行优化设计。

Discussion on Design of Ramp Landing Section of Urban Elevated Expressway

Upper and lower ramps connect the urban elevated expressway and the ground road network,and are a necessary means to fully play the role of expressway function and relieve the traffic pressure of ground road network However,the bridge approach of ramp road often causes much effect on ground traffic organization.If it is not improperly arranged,the ground traffic situation could be in chaos,the travel in the areas along the route would be blocked,the key junctions might be jammed and even the service capacity of expressway would be reduced.Therefore,it is necessary to reasonably select the arrangement of ramp landing section and optimize the design of traffic organization at the relevant ground crossings in combination with the actual situation and traffic demand.