城市快速路叠层剪刀叉匝道的提出及其应用分析

A New Proposal and Practice Analysis of Stacked Scissors Crossover Ramp in Urban Expressway

快速路匝道的布局和组合设计是影响快速路匝道组合区内平均车速乃至全线通行效率的关键因素。在常规剪刀叉匝道方案理论的基础上,针对主线地道接主线高架情况,创新性地提出叠层剪刀叉匝道方案,并在漕宝路快速路设计中进行了应用实践。该方案能达到用地集约、景观轻盈、结构经济、线形顺畅等效果。同时,对叠层匝道的结构布置和接地后的交通组织设计进行了说明,为快速路匝道的组合设计提供了一种新思路和设计参考。

The layout and combination design of expressway ramp are the key factors influencing the average speed within expressway ramp combination areas and even the overall traffic efficiency.Base on the theory of conventional scissors crossover ramp program,this paper creatively propose a innovative design of stacked scissors crossover ramp for connecting tunnel to elevated road.This design was practiced in Caobao Road expressway.It can achieve benefits such as intensive land use,beautiful landscape,economic structure,smooth line,and so on.Additionally,this study explains the structural layout of the stacked ramp and the traffic design after grounding,offering a new perspective and design reference for the combination design of the expressway ramp.