Small-space no-conflict point intersection structure

Abstract

The invention provides a small-space no-conflict point intersection structure, which is characterized in that an inlet / outlet traffic flow interchange channel T1 and T3 are respectively arranged on two intersection inlet / outlet roads of a WE road, the inlet / outlet traffic flow interchange channel is an underground channel which comprises two layers of underground U-shaped groove and underground U-shaped groove central top ground passing plate; a straight traffic flow separating channel T2 is arranged at interjunction of a SN road and the WE road; the straight traffic flow separating channel T2 is the underground channel which comprises two layers of underground U-shaped groove and the underground U-shaped groove central top ground passing plate; a layer of the underground U-shaped groove is used for SN traffic flow from S direction to N direction and NS traffic flow from N direction to S direction, a layer of the ground passing plate is used for left turn of other direction traffic flow and straight passing, the channel is arranged for exchanging position of straight passing and left turn traffic flow of the WE road as well as straight passing and left turn in the outlet channel traffic flow, straight traffic flow is separated at center of the intersection, and no-conflict point at the intersection can be realized.

Description

technical field [0001] The invention belongs to the field of road traffic design, in particular to an intersection structure with no conflict points in a small space. Background technique [0002] In recent years, with the continuous expansion of cities, the explosive and unbalanced growth of traffic demand has not only promoted the rapid development of urban traffic, but also brought many problems represented by traffic congestion to the city. Level crossings are important nodes for the diversion and conversion of road traffic flow, and are the throat and hub of road traffic, but they are also often the source of road congestion. In order to improve traffic congestion and congestion at intersections, the following methods are usually adopted: [0003] 1. Traffic channelization organization and signal control: through the traffic lights, the traffic flow in all directions is organized in an orderly manner, so as to reduce or avoid the conflict and interference of traffic fl...

AI Technical Summary

Problems solved by technology

[0003] 1. Traffic channelization organization and signal control: Traffic lights are used to organize the traffic flow in all directions in an orderly manner, thereby reducing or avoiding the conflict and interference of traffic flows in different directions in time, but its traffic capacity is limited and traffic delays are large. low operating efficiency

[0004] 2. Establish a roundabout: the traffic flow in all directions is organized through the roundabout, eliminating the conflict points inside the level crossing. It is more practical and effective when the traffic volume is relatively small. It has been widely used in some countries , but it occupies a large area and the traffic capacity is extremely limited, especially the interweaving of vehicles on the ring road causes great delays

[0005] 3. Establishing interchanges: Although this method can greatly increase the traffic capacity of the traffic system, it has three main limitations: first, the construction of interchanges requires a large amount of engineering and high cost; Contradictions are particularly prominent in cities with a lot of money; thirdly, left-turning roads often need to detour to the right first, the curve slope is large, the linear index is low, the traffic volume is low, and the design is complicated; finally, the interchange often increases the distance that the traffic flow crosses the detour , while satisfying accessibility, long-distance crossing and detours cause unnecessary energy loss and environmental pollution

But it occupies a large area and the construction cost is high

[0008] Among the existing intersection forms mentioned above, traffic channelization organization and signal control of level crossings and traffic capacity of roundabouts are relatively limited, unable to meet the growing traffic demand; while interchanges have relatively ideal traffic capacity, they often Inevitably, there are outstanding problems such as high cost, complex design, large area, and long detour distance for some traffic flows.

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