既有立交改扩建工程方案设计探讨

既有立交改扩建工程方案设计时,需综合考虑立交的新功能定位、交通量适应性、既有构造物利用、对现有道路交通的影响、立交工程造价等因素。结合相关经验,根据立交改扩建的背景原因,提出不同情况下既有立交改扩建工程方案设计思路,具有一定的理论和实际意义。

Scheme Design for Reconstruction and Extension Projects of Existing Interchanges

In the scheme design of reconstruction and extension projects of existing interchanges, the factors such as new functional orientation of the interchange, adaptability of traffic volume, utilization of existing struc tures, influence on existing road traffic and engineering cost of interchange need comprehensive consideration. Combined with related experience, according to the background of reconstruction and extension of interchange, the different scheme design ideas for reconstruction and extension projects of different existing interchanges are put forward. It has certain theoretical and practical significance.