Four independent h-shaped bifurcated bridges combined bridge contributing to unobstructed left-turning and straight-driving

Abstract

The invention relates to a combined bridge formed by four independent h-shaped bifurcated bridges. The four independent h-shaped bifurcated bridges are combined into a multi-bridged unobstructed combined structure for a crossroad. With the combined bridge, unobstructed left-turning and straight-driving can be realized. Each bifurcated bridge is formed by a straight-driving arch bridge and a left-turning bridge, wherein the left-turning bridge is positioned on the left side of the straight-driving arch bridge. Each left-turning bridge is bifurcated from the straight-driving arch bridge on a left-turning side, such that an h-shaped bifurcated bridge is formed. Four bifurcated arch bridges form four h-shaped bifurcated bridges with co-directional bifurcations. Two h-shaped bifurcated bridges with co-directional bifurcations form a bridge set. Two sets of straight-driving one-way sections of two bridge sets form a stereo cruciform structure. With the combined bridge, damage degrees of local geological changes to the combined bridge can be reduced. A left-turning bridge can be used as a shared bridge for left-turning and right-turning. Wide roads can be used as lane merging sections, such that obstruction is not easy to occur. Vehicles can turn left directly without unnecessary circulation. Pedestrians can pass under the combined bridge. With the combined bridge, complete intercommunication of a bidirectional six-lane small crossroad can be realized.

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 that can make straight-going motor vehicles (hereinafter referred to as: straight-going vehicles) and left-turning motor vehicles (hereinafter referred to as: left-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, conge...

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 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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