Combination bridge of two right-turn and straight-going "y"-shaped bifurcated bridges

Abstract

The composite bridge of two right-turning and straight-going "Y"-shaped bifurcated bridges of the present invention is a composite bridge in which two independent bifurcated arch bridges are combined so that the straight-going and right-turning motor vehicles on the opposite sides of the crossroads have no conflict of crossing and occupying the road. . A right-turning bridge is located on the right side of a straight arch bridge and forms a "Y"-shaped fork bridge with bifurcations in the same direction. Two "Y"-shaped fork bridges with bifurcations in the same direction opposite to each other form a composite bridge. In the composite bridge, The one-way section of the straight bridge is located in the bifurcation of the "Y"-shaped fork bridge that bifurcates in the same direction on the opposite side. Advantages: It can solve the problem that straight-going vehicles and right-turning vehicles do not intersect and occupy the road on the two ground branches on the opposite side of the intersection; reduce the degree of disaster caused by local geological changes to the entire composite bridge, and the right-turning bridge can be used as a shared bridge for right-turning and left-turning , turn right directly without any extra detour.

Description

technical field [0001] The invention belongs to an overpass bridge for motor vehicle traffic at a crossroads, in particular two independent bifurcated arch bridges are combined to make straight-going motor vehicles (hereinafter referred to as: straight-going vehicles) and right-turning motor vehicles (hereinafter referred to as: : right-turning vehicle) a composite bridge without crossing lane 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, congestion is an inevitable result. In order to ...

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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 Right and Left Turn 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 opposite right-turn bridge 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 right-turning bridge passes under the straight bridge and the right-turning bridge of the ground branch on the right, it is connected to the ground after being leveled with the lower bridge section of the straight bridge on the left 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 intersection is required to be 115 meters, while in the old Two-way six-lane crossroads in the urban area, almost none with a diameter of 115 meters, that is, the overpass bridge provided by the accompanying drawing of this manual can hardly be used for two-way six-lane crossroads in the old city, even if the right-turning bridge and the left-turning bridge are inwardly recessed to The minimum semi-longitude is only 15.0 meters, and the minimum diameter of the entire grid-shaped overpass is at least 75.0 meters

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