Combined traffic facility of right running 'halberd'-shaped bifurcate bridge and bifurcate tunnel

Abstract

The invention discloses a combined traffic facility of a right running 'halberd'-shaped bifurcate bridge and a bifurcate tunnel, and belongs to a facility of combining a bifurcate arched bridge and a tunnel which are independent to allow the traffic at a crossroad to be smooth. A left turning bridge is positioned at the left side of a straight arched bridge to form a homodromous bifurcate 'halberd'-shaped bridge, and two bifurcate bridges of opposite bifurcate openings form a grouped bridge; a left turning tunnel is positioned at the left side of the straight arched bridge to form a homodromous bifurcate 'halberd'-shaped tunnel, and two bifurcate tunnels of opposite bifurcate openings form a grouped tunnel; and two straight bridge single sections of the grouped bridge and two straight tunnel single sections of the grouped tunnel form a stereo cross structure. The combined traffic facility has the advantages that: the disaster degree of the local geological change on the whole combined bridge is reduced, the left and right turning bridges can share a bridge, the left and right turning tunnels can share a tunnel, the merged lane zone is long and does not easily produce traffic jam, vehicles directly turn left without circumambulating, and small crossroads of bidirectional six lanes can be intercommunicated without interweaving.

Description

technical field [0001] The present invention belongs to the traffic facility that can make motor vehicle traffic unimpeded at the crossroads, in particular two independent bifurcated arch bridges and two independent bifurcated tunnels can be combined to make straight-going motor vehicles at the crossroads (hereinafter referred to as: straight-going vehicles) It is a traffic flow facility that does not conflict with left-turning motor vehicles (hereinafter referred to as: left-turning vehicles) without intersecting and occupying lanes. 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. Co...

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

In a word, the road division specification of going straight --- turn left --- turn right from inside to outside required by the overpass is different from the existing road division specification of turn left --- go straight --- turn right, so that the overpass cannot be On-road application of existing specifications

[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 overall shape of the overpass is a net frame bridge body with two diagonal lines, and the minimum circular diameter of the open space without buildings at the crossroads is required to be 115.0 meters, while in the old city There are almost no two-way six-lane intersections with a diameter of 115 meters, that is, the overpass provided in the attached drawing of this manual can hardly be used for two-way six-lane intersections in the old city

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