基于MFD的交通誘導(dǎo)與邊界控制協(xié)同方法研究
[Abstract]:With the development of urbanization and motorization, traffic congestion has become a thorny problem faced by many cities. In macro traffic network, although many complex algorithms are applied to solve the problem of road network traffic control, because it is difficult to obtain accurate OD data, these methods are difficult to be applied to real-time control environment, and the macro basic diagram (Macroscopic Fundamental Diagram, of road network is difficult to be applied. MFD) can just avoid this problem, and its existence has been proved to provide an opportunity for its popularization and application in the field of traffic control. The traditional research results show that traffic guidance and signal control are two effective means to solve traffic congestion. Based on this, This paper relies on the National Natural Science Youth Foundation project "Research on intrinsic extraction and rapid evacuation algorithm of congestion traffic network based on space-time detection (No.61304195)" and the project supported by Anhui Natural Science Foundation "Traffic congestion network". Study on the Mechanism of Spatial situation Transformation and its Rapid evacuation (No.1408085QF111) ", A collaborative method of traffic guidance and boundary control based on MFD is proposed to solve the congestion problem in large traffic networks. Finally, the case analysis is carried out to verify the problem. The main contents of this paper are as follows: (1) according to the factor "traffic flow density" that affects the MFD curve, the macro road network is divided into MFD subregions, according to the relationship between the adjoining relationship of multiple MFD subregions and the inflow and outflow rate of traffic volume. The equilibrium equation of traffic flow in road network is established. (2) based on the space-time detection data, the congestion state of road nodes and road sections in the road network is analyzed, and the bottleneck identification and classification model of urban traffic network is established. According to the relationship between congestion in key sections of road network and MFD curve in sub-area, the cooperative timing of traffic guidance and boundary control is made. (3) according to the way of driver path selection, the Logistic model of driver path obedience rate is established through SP investigation, and the traffic guidance method based on Logistic sub-area is put forward. Taking the intersection controlled by boundary signal as the control object, a boundary control method for adjusting the green signal ratio of signal light at intersection is proposed. Furthermore, a collaborative method of traffic guidance and boundary control for multiple MFD subregions is obtained, and a multi-objective boundary coordination optimization model with the largest completion rate, the minimum average travel time and the least average delay of the whole road network travel vehicle is established. The multi-objective function is solved by adaptive genetic algorithm. Taking the road network of a city as an example, the macro road network with MFD is divided into four MFD sub-area systems. By comparing the cooperation between traffic guidance and boundary control proposed in this paper, only boundary control and no induction and control are used. The results show that the macro traffic guidance and control coordination method plays an obvious role than the boundary control alone and the boundary control method alone, and the traffic guidance and boundary control coordination method can better solve the congestion problem in the sub-area of MFD. the results show that the cooperative method of traffic guidance and control plays an important role in the condition of boundary control and boundary control alone. It can effectively improve the traffic efficiency of macro traffic network.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:U495
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