Urban three-dimensional transportation network

Abstract

The invention belongs to the field of urban traffic. A kind of urban three-dimensional transportation network, comprises the arterial road of intersection and branch road, and described arterial road and branch road all are provided with motor vehicle lane and non-motor vehicle lane, and described non-motor vehicle lane is arranged at the left and right sides of motor vehicle lane; Also includes The bridge network that is arranged on the main road and the branch road, the bridge network includes the main straight bridge, the span bridge and the branch road one-way bridge; the main straight bridge includes the upward A main straight bridge and the downward B main straight bridge; Said span bridge comprises the first span bridge of A main straight bridge-B main straight bridge and the second span bridge of B main straight bridge-A main straight bridge; D one-way bridge. The urban three-dimensional traffic network of the present invention has the characteristics of high vehicle traffic efficiency, low probability of traffic jams, small occupied area, low cost, and can be reconstructed on the basis of existing urban road traffic facilities.

Description

technical field [0001] The invention belongs to the field of urban transportation, and in particular relates to an urban three-dimensional transportation network. Background technique [0002] With the acceleration of urbanization in our country, the urban population in our country has increased sharply, and the urban area will also expand rapidly with the continuous increase in population, thus driving the continuous extension of urban roads. In order to save costs, the existing traffic intersections are generally plane-interactive in order to save costs, that is, two arterial roads directly cross and connect on the ground, and the outermost side of each arterial road is a right-turn lane, and straight vehicles cannot complete U-turn or left-turn actions. In order to ensure the normal passage of vehicles, it is necessary to set up traffic lights at intersections. If the red lights of the traffic lights are set for a long time, many vehicles will gather at the intersection, ...

AI Technical Summary

Problems solved by technology

However, the general viaduct occupies a large area, not only the site selection conditions are harsh, but also the number is limited. The insufficient number of ramps is likely to cause congestion at the upper and lower bridges

In addition, the foundation of the pillars used to support the viaduct is relatively deep. For cities with developed underground water systems, it is easy to damage the waterways deep underground.

Due to the small cross-sectional area of ​​the column, the pressure on the load-bearing rock below is too large, so the foundation is prone to subsidence, threatening the safety of the road surface

With the development of car familyization, only the improvement on the existing traffic mode cannot meet the traffic problems such as the ground traffic pressure caused by the increasing number of cars

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