河谷地区单喇叭立交设计要点

由于地形、地物条件的限制,山岭重丘区河谷地区布置互通式立交,常使A匝道变形平行地方路,以便节省空间为布置收费站创造条件。如果做好匝道线形设计、收费广场处理、排水等设计工作,通常能够布置出满足功能、线形紧凑、节省用地的立交方案。必要时采用舒展的线形,为以后改造预留必要的条件。

Design Points of Single Trumpet Interchange in River Valley Region

Due to restrictions of terrain and land feature,A ramp transforming to parallel local road is frequently adopted for interchange layout at mountain,hill and river valley region to save space for toll station arrangement.Well complication of ramp liner design,toll plaza treatment and design of drainage system and etc.could provide generally a compact linear and land-saving interchange scheme with required functions.Stretch linear could be adopted to provide necessary condition for future reconstruction,if necessary.