Municipal crossroads structure

Abstract

Disclosed is a municipal crossroads structure, wherein a first artery ( 1 ) and a second artery ( 2 ) form a central platform ( 3 ) at an intersection, the first artery ( 1 ) is provided with a low tunnel ( 4 ) passing underneath the central platform ( 3 ), a cross turning tunnel ( 5 ) is diverged from the low tunnel ( 4 ), and a height of the two types of tunnels enabling vehicles to pass therethrough is no less than 2 meters and no more than 3 meters. The first artery ( 1 ) is separated by the low tunnels ( 4 ) into two ground surface lanes ( 7, 8 ) which are intended for travel in opposite directions and can be used by large vehicles, the two ground surface lanes ( 7, 8 ) are connected on the central platform ( 3 ) to form U-turn lanes ( 9, 10 ), and the U-turn lanes ( 9, 10 ) are located on left and right sides of a straight-on lane of the second artery ( 2 ) on the central platform ( 3 ). The municipal crossroads structure uses the low tunnels ( 4 ), the cross turning tunnels ( 5 ) and the central platform ( 3 ) to enable split-flow for small and large vehicles and vehicles travelling in different directions, such that a large number of small vehicles can travel without being caught in a traffic jam, and traffic is smooth across the whole crossroads.

1 . A municipal crossroads structure for solving a traffic jam issue, comprising a first artery ( 1 ) and a second artery ( 2 ) which cross each other and each are bidirectional lanes, characterized in that ground road surfaces of the first artery ( 1 ) and the second artery ( 2 ) form at an intersection a central platform ( 3 ) sharing the ground road surface, the first artery ( 1 ) is provided with bidirectional low tunnels ( 4 ) passing underneath the central platform ( 3 ), a height of the low tunnels ( 4 ) enabling vehicles to pass therethrough is no less than 2 meters and no more than 3 meters, the low tunnels ( 4 ) rise to the ground road surface again after passing beneath the central platform ( 3 ), a cross turning tunnel ( 5 ) is diverged from an outside edge of a travel direction of the low tunnel ( 4 ), a height of the cross turning tunnel ( 5 ) enabling vehicles to pass therethrough is no less than 2 meters and no more than 3 meters, the cross turning tunnel ( 5 ) makes a U turn underground a front of an upslope ramp of the low tunnel ( 4 ) and is connected with the second artery ( 2 ) in the same direction after a transition of a segment of turning upslope ramp ( 6 ), the ground road surface of the first artery ( 1 ) is divided by the low tunnels ( 4 ) into left and right ground surface lanes ( 7 ,  8 ) which are opposite in drive direction and intended for travel of large vehicles, the two ground surface lanes are connected on the central platform ( 3 ) to form two U-turn lanes ( 9 ,  10 ) which are opposite in a U turn direction and intended for U turn of large vehicles, the two U-turn lanes ( 9 ,  10 ) are located on left and right sides of a straight-on lane of the second artery ( 2 ) on the central platform ( 3 ), a lane ( 11 ) turning to an outside edge of the second artery ( 2 ) is diverged from an outside edge of the travel direction of the ground road surface of the first artery ( 1 ), and a lane ( 12 ) turning to an outside edge of the first artery ( 1 ) is diverged from the outside edge of the travel direction of the second artery ( 2 ). 
     
     
         2 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that the height of the low tunnels ( 4 ) enabling vehicles to pass therethrough is in a range of 2.50-2.60 meters. 
     
     
         3 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that the height of the low tunnels ( 4 ) enabling vehicles to pass therethrough is jointly constituted by a sink depth of a bottom road surface of the tunnel and a lift height of a road foundation on a top of the tunnel. 
     
     
         4 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that the height of the cross turning tunnel ( 5 ) enabling vehicles to pass therethrough is in a range of 2.50-2.60 meters. 
     
     
         5 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that the height of the cross turning tunnel ( 5 ) enabling vehicles to pass therethrough is jointly constituted by a sink depth of a bottom road surface of the tunnel and a lift height of a road foundation on a top of the tunnel. 
     
     
         6 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that the first artery is provided with an underground footway passage ( 14 ), and an escape door ( 15 ) is provided between the underground footway passage ( 14 ) and an underground U-turn location of the cross turning tunnel ( 5 ). 
     
     
         7 . The municipal crossroads structure for solving the traffic jam issue according to  claim 6 , characterized in that an air ventilation window ( 17 ) is provided on a top of the underground footway passage ( 14 ) of the first artery. 
     
     
         8 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that an air ventilation window ( 18 ) is provided on a top of the cross turning tunnel ( 5 ). 
     
     
         9 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that a temporary parking area ( 16 ) is provided on an outside edge of the travel direction of the cross turning tunnel ( 5 ). 
     
     
         10 . The municipal crossroads structure for solving the traffic jam issue according to  claim 1 , characterized in that a raised rainwater isolating belt is provided on the ground at an inlet and an outlet of the low tunnel ( 4 ).