单喇叭互通立交改扩建为枢纽兼落地互通立交方案设计分析

Design and Analysis of Scheme for Reconstruction and Expansion of Single-trumpet Interchange to Hub and Landing Interchange

以桓仁至集安高速公路起点雅河互通的改扩建为工程实例,探索了一种单喇叭互通改扩建为枢纽兼落地互通的设计方案。利用增量优化原则,通过增加匝道布设来完善互通功能,满足目标功能需求的同时,有效提高了旧路利用率,工程规模小、拆除浪费少,有利于施工及运营,符合绿色公路理念。

Taking the reconstruction and expansion of Yahe interchange,which is with the starting point of Huanren-Ji'an expressway as the engineering project,a kind of design scheme for the reconstruction and expansion of single-trumpet interchange to the hub and landing interchange is explored.Based on the principle of incremental optimization,the interchange function is improved by increasing the ramp layout to meet the objective functional requirements.At the same time,the utilization rate of the old road is effectively improved.The project scale is small,the demolition waste is less,which is conducive to the construction and operation and conforms to the concept of green highway.