基于界壳论的绕城高速公路入口匝道控制模型研究

The ring freeway facilities of high-fill embankments, fences and viaducts, etc. Separate itself from the sounding environment, while forming the boundary of ring freeway. The traffic flow between the ring freeway and its environment can be exchanged only through ramps. The rules and mechanisms of traffic-flow exchange are determined by the boundary's semi-closed features. Taking the boundary of ring freeway system as breakthrough point, using Jieke theory-the theory for studying the common principle of system boundaries, and the method of mater-element analysis and extension control, the structure and function of ring freeway Jieke is to be discussed, the matter-elements model for describing Jieke attributes will be established. The variations of Jieke-attribute values will be analyzed when the on-ramp control is conducted. The essence of on-ramp control will be explored by using matter-element transformation. Taking the matter-element of Jieke attributes as object, the extension control model of on-ramp metering will be set up. It is hopeful that the theoretical framework of on-ramp control based on Jieke theory will have been developed, the model of which takes account of the traffic situation of adjacent roads and expressways of ring freeway and can deal with the ring freeway traffic breakdown. New ideas and methods for researching ring freeway control will have been provided.

绕城高速公路的高路堤、护栏、高架桥等设施将绕城高速公路与周围环境隔离开，形成绕城高速公路系统的边界，而匝道出入口是系统和环境车流交换的唯一通道，这种半封闭的周界特征决定了绕城高速公路系统和环境间车流交换的规律和机制。以绕城高速公路系统周界为切入点，运用研究系统周界一般规律的理论-界壳论的思想与方法，结合物元分析及可拓控制理论，研究绕城高速公路系统界壳结构和功能，建立界壳结构和功能属性物元模型；分析绕城高速公路入口匝道控制过程中界壳属性值的变化，利用属性物元变换揭示入口匝道控制的实质，以界壳属性物元为控制对象，建立入口匝道可拓控制模型。以期构建基于界壳论的既兼顾相邻普通高速公路和城市道路交通状态又可应对交通突变的绕城高速公路入口匝道控制理论框架，为绕城高速公路交通控制理论研究提供新的思路和方法。