苏州绕城高速公路天池山互通改造方案研究

Study on the Reconstruction Scheme of Tianchi Mountain Interchange of the Ring Expressway

针对苏州绕城高速公路天池山互通改造项目进行改造方案研究。对现状天池山互通存在的问题进行了分析,提出了5条改造原则。在此基础上提出了“叶型双层立交+直行平交”“Y型三层立交+直行上跨”“B型单喇叭互通+直行平交”“优化型B式单喇叭互通+直行平交”4个改造方案,从立交通行能力、行驶安全性、互通占地面积、立交线形美观性等方面进行了综合比选,最终选择了最优设计方案。改造项目实施效果:满足了立交各转向功能,最大程度地利用了原有立交设施,节约了资源,保证了交通安全,满足了通行能力,成为高新区进出绕城高速公路的第一门户,推动了高速公路与市域快速路一体化融合发展。

Studied in this paper is the reconstruction scheme of the Tianchi Mountain Interchange Project of Suzhou Belt Expressway.The problems existing in current Jianchi Mountain Interchange are analyzed herein and five reconstruction principles are proposed.On this basis,four transformation schemes are put forward,which are"leaf type double-layer interchange+straight level crossing","Y-type three-story interchange+straight up span","B-type single trumpet interchange+straight level crossing"and"optimized B-type single trumpet interchange+straight level crossing".The comprehensive comparison and selection are made from the aspects of interchange capacity,driving safety,interchange floor space and aesthetics of interchange alignment.Finally,the optimal design method is selected.The implementation of the reconstruction project brings about the following good effects:It meets the steering function of the interchange,makes the best use of the original interchange facilities,saves resources,ensures traffic safety and meets the carrying capacity.It has become the first gateway of the high-tech zone for entering and leaving the belt expressway,promoting the integrated development of highway and urban expressway.