Study On Local Transportation Network Topology And Demand Characteristics

The regional traffic demand stems from the social economic activity. The impacts of social economic activity scattering the difference point in space, interaction between resources and the workforces, and reproduction produce the demand of communications and transportation. However, the transportation demand merely has not a scale demand of transportation and distribution relation on structural total amount-the satisfaction on quantity, also there is geographical distribution requirement-the overall arrangement. This paper analyzes the space structure and relation to study the relation between the traffic demand and overall arrangement, offering the new method for constructing the regional traffic network.This paper considers the influence factors of the traffic demand under the regional level of the space background, analyzes the relation between traffic network overall arrangement and demand of the regional traffic. Because factors impacting on traffic demand are numerous, on the basis of considering every factor synthetically, according to the demand regularity linked in time, the complicated, space-time traffic demand for the difference is often divided into the taking place demand and sporadic demand, making the complicated problem simple. According to slow variable determinism, the slowest factor that changes is the traffic network in the communications and transportation, time space difference heavy passenger-cargo demand realize through traffic network space, traffic network overall arrangement shape and course of developing have formed the feedback of the social economic system of traffic system.This paper analyzes the influence factor of the network overall arrangement of the traffic, the interdynamic relation of the overall arrangement basic mode of the regional traffic network and space structures, points out the network overall arrangement of the traffic should be combined closely with regional space pattern, discusses the overall arrangement mode of the regional traffic network and daily evaluation index in the case of often sending traffic demand. The paper carries on the discussion on the formulation mechanism of the potential demand, relation with the network overall arrangement of urban road and regional traffic network overall arrangement. The special demand hiding in a kind of often demand, For example: Spring transportation, golden week, etc, appear in annual fixed period, and the pressure to the regional traffic network is very large. so, the paper analyze the characteristic of this kind of demand, when it is unable to totally depend on increasing the traffic route, it need depend on the rational measure of regulation and control, make this kind of demand fully satisfied.The rational traffic network overall arrangement not only will attract more traffic demands, it is essential for strengthening the regional connection and bringing about an advance in backward regional economy, and can meet the sporadic demand of the area and national defiance demand of wartime; the sudden incident is sporadic demand in the area, the steady traffic network overall arrangement is essential to meeting this kind of fast and in time demand, and prevent the regional functionality from isolating when the especially large-scale geological calamity takes place at the time of the accident. The paper introduces the concept of the topological index; employ the topological index to appraise the ability of the regional traffic network in resisting the calamity, rescuing and meeting the special demand promptly. It can build arrays in order to judge accurately, increase priority etc. to offer method support. Analyze how to choose the best medical care, circuit of rescuing goods and materials when the sudden incident happens in the area.The sustainable development traffic network overall arrangement should meet the traffic demand of the area first, moreover meet regional space pattern and national defiance demand. The shape of network overall arrangement transportation in an area is directly related with urbanization intensity and overall arrangement in this area.This paper analyzes the adaptability of the network overall arrangement of the regional traffic c and regional economy, urban space overall arrangement, quantized the adaptation of the two, analyzed the coordinated development within network overall arrangement and economic subsystem, the internal subsystem of traffic network, in viewing of the above, it proposed the sustainable development traffic network overall arrangement mode. At last, this paper takes Xi'an as an example, analyzes the development of Xi'an land, regional traffic network pattern, adaptability of overall arrangement and regional space pattern; combining the rural highways network plan, puts forward the suggestion on the urban area land development of Xi'an.