互通式立交的基本单元——匝道

一个交叉口往往因其匝道的不同布置而引起整个交叉口型式的改变 ,正是由于千姿百态的匝道 ,才形成了风格各异的立交世界。因此 ,匝道设计的合理与否将对整个立交乃至与其相连的快速道路的交通功能、投资、环境及社会和经济效益等诸因素起着重大作用。本文主要阐述的是匝道类型及其形式变化对互通式立交选型的影响。

Basic Unit of Interchange-Ramps

One intersection often brings to the change of the whole intersection type by the different arrangements of ramps. Just because of various ramps, it forms various types finterchanges, therefore, whether the ramp design is reasonable or not will play an important role in the whole interchange, even the factors such as the traffic function, investment, environment and social and economical effect etc. of the express road which are connected with the ramps. The paper mainly states the ramp types and form change will affect on the selection of types of interchanges.