高速公路互通式立交设计分析

Design Analysis of Expressway Interchange

结合太行山高速公路互通立交设计实践,对《公路路线设计规范》(JTG D20—2017)、《公路立体交叉设计细则》(JTG/T D21—2014)颁发后的互通立交设计主线指标、匝道单双车道选用、匝道设计速度、平纵组合等问题进行分析、阐述,设计经验可为其他同类型高速公路互通立交设计提供参考。

In combination with the design practice of expressway interchange in Taihang mountain area,the main line indexes of interchange design,selection of single and double lane of ramp,ramp design speed,horizontal and vertical combination and other issues are analyzed and elaborated after the issuance of the Design Code for Highway Route( JTG D20—2017) and Design Details for Highway Grade Separation( JTG/T D21—2014).The design experience can provide reference for the design of interchanges of other similar expressways.