Annular flyover for straight movement and large-radius turning at crossroad

Abstract

The invention discloses an annular flyover for straight movement and large-radius turning at a crossroad, which belongs to the design of a flyover structure which can realize completely smooth straight movement and large-radius turning by a single-layer flyover at the crossroad. The annular flyover is provided with four lane change parts, and each lane change part is within the radian corresponding to the included angle of 0-90 degrees of a central angle; the inner ring entering point of one lane change part is connected with an inner ring single slope bridge, and the outer ring outgoing point of the same lane change part is connected with an outer ring single slope bridge; and the rotation directions of the inner ring single slope bridges are the same. The invention has the advantages that straight movement and large-radius turning in respective lane can be realized only by the single-layer annular bridge and four groups of inner ring single slope bridges and outer ring single slope bridges, and vehicles run completely smoothly. The complete smoothness without cross road occupation of the vehicles at the crossroad is realized with minimum bridge construction facilities, minimum bridge construction expense and minimum occupied crossroad ground and space.

Description

technical field [0001] The present invention belongs to the overpass design of main road crossings, in particular the overpass structure design that can realize straight travel and big turns (left turn for right-hand system, right-turn for left-travel system) with single-layer overpass. 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 and become one road. Vehicles on the two roads can only share one road at the node, and half of the road resources are lost. It will affect the driving speed and traffic volume. Coupled with the mixed traffic of pedestrians, non-motor vehicles and motor vehicles, congestion is an inevitable result. In order to solve this difficult problem, people have thought of widening the road s...

AI Technical Summary

Problems solved by technology

Its disadvantages: First, there are two kinds of driving regulations on a cross road. Drivers must recognize the traffic signs painted on the ground every time they cross the cross road.

The second is that the road division specification of going straight from the inside to the outside of the ring --- turn left --- turn right is different from the existing road division specification of turning left --- go straight --- turn right, which makes it easy for drivers to drive away from the intersection. Before the mouth, according to the existing left-turn---go straight---right-turn road division standard driving, it is too late to see the straight line---left turn---right turn road division standard after approaching the overpass bridge of this invention changing lanes, causing congestion and accidents

In a word, the road division specification of going straight --- turning left --- turning right from the inside of the ring to the outside of the ring required by the overpass is different from the existing road division specification of turning left --- going straight --- turning right, so that the overpass It cannot be applied on roads with existing left-turn---go straight---right-turn road division regulations

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