A combined bridge of four independent "y"-shaped bifurcated bridges that turn right and go straight

Abstract

The combined bridge of the four independent "Y"-shaped bifurcated bridges for turning right and going straight in the present invention is composed of four independent bifurcated arch bridges to form a multi-bridge unblocked combined structure at the intersection. Each bifurcated arch bridge has a straight-going arch bridge and a right-turning bridge. The right-turning bridge is located on the right side of the straight-going arch bridge. Bridge, four bifurcated arch bridges become four same-direction bifurcated "Y"-shaped fork bridges; two same-direction bifurcated "Y"-shaped fork bridges form a grouping bridge, and two groups of two grouping bridges have two straight single-line sections. Three-dimensional cross-shaped structure. Advantages: Reduce the disaster degree of local geological changes to the entire combined bridge, the right-turn bridge can be used as a shared bridge for right-turn and left-turn, there is a wider ground as a merged lane section, and it is not easy to block traffic, and there is no unnecessary detour when you turn right directly. Pedestrians can be returned to the road under the bridge, and the small crossroads with two-way six-lane can be fully interconnected.

Description

technical field [0001] The present invention belongs to the overpass bridge that makes motor vehicle traffic unimpeded at crossroads, particularly four independent bifurcated arch bridges are combined to make straight motor vehicle (hereinafter referred to as: straight motor vehicle) and right-turn motor vehicle (hereinafter referred to as: right-turning vehicle) a smooth combined structure of multiple bridges without cross-occupancy conflicts. Background technique [0002] At present, the traffic at level crossings of international and domestic urban arterial roads is very crowded and often blocked, which is a common problem in major cities all over the world. The reason is that two roads intersect at a level. At the intersection, the two roads overlap to become one road. Motor vehicles on the two roads can only share one road at the node, and half of the road resources are lost. Coupled with the mixed traffic of pedestrians, non-motor vehicles and motor vehicles, congesti...

AI Technical Summary

Problems solved by technology

Its disadvantages: drivers must recognize the traffic signs clearly at the crossroads. Once they do not see clearly or after seeing clearly, they can no longer change lanes, which will lead to traffic jams at the crossroads at the crossroads when they change lanes

make the overpass unusable on existing regulated roads

[0004] Chinese patent 200820230509.5 "Direct Left and Right Turning Interchange Overpass" discloses a kind of overpass. Since the patent claims and instructions describe the technical solution very clearly, it seems that the net frame overpass can be understood with the accompanying drawings. The structure and defects are as follows: 1. Unnecessary height and length are added: at the position of the ground branch road away from the intersection, the straight bridge passes under the left-turn bridge on the opposite side and then continues for a section of the bridge body before connecting with the ground, so that the upper floor The height of the bridge from the ground is very high, which increases the total length of the bridge, which makes the entire bridge body tall, long and large, which wastes the cost of building the bridge and blocks the urban landscape.

2. Partial damage leads to overall damage: After the left-turning bridge passes under the straight bridge and the left-turning bridge of the left ground branch, it is connected to the ground after being leveled with the lower bridge section of the straight bridge on the right ground branch. The height of the upper bridge from the ground is very high, the total length of the bridge is increased, and the entire bridge body is connected into a large-scale integral bridge. Once there is a geological change in the part of the large-scale integral bridge, if its part is damaged, the entire large-scale integral bridge will be damaged. overall bridge damage

3. The entire bridge takes up too much area in the form of a net frame: the left-turning bridge and the right-turning bridge respectively use two intersecting bridge bodies, which increases the width of the entire overpass body, and the overall shape of the overpass bridge has two diagonal lines The grid-shaped bridge body requires a minimum circular diameter of 115 meters for the open space without buildings at the crossroads. However, in the two-way six-lane crossroads in the old city, there are almost no crossroads with a diameter of 115 meters, which is provided in the attached drawing of this manual. The overpass can hardly be used at the two-way six-lane intersection in the old city. Even if the left-turning bridge and the right-turning bridge are recessed to a minimum half-length of only 15.0 meters, the minimum diameter of the entire grid-shaped overpass is at least 75.0 meters.

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