WO2014071540A1

WO2014071540A1 - Crossroads structure to facilitate re-modelling of established crossroads

Info

Publication number: WO2014071540A1
Application number: PCT/CN2012/001529
Authority: WO
Inventors: 霍树添
Original assignee: Fok Su Tim
Priority date: 2012-11-12
Filing date: 2012-11-12
Publication date: 2014-05-15
Also published as: CN104093905A; CN104093905B

Abstract

Provided is a crossroads structure to facilitate re-modelling of an established crossroads, wherein two low tunnels (3, 4) with a height of no lower than 2 metres and no higher than 3 metres are provided at two ends of a first artery (1) near the centre of an interchange; the road surface of the first artery (1) on the surface is divided by the low tunnels into left and right surface lanes (5, 6) able to be used by large vehicles and the travelling directions of which run counter to each other; and the road surface above the low tunnels forms a platform for turning around (7) able to be used by large vehicles and stretching across between the two surface lanes. The structure is extremely convenient for re-modelling an established crossroads without needing to make any change to a second artery and without needing to construct a flyover on the first artery. Using two low tunnels (3, 4) and two platforms for turning around (7) enables split-flow for large and small vehicles and for vehicles travelling in each direction, making changing crossroads smoother. Further provided is a half-sunk/half-elevated tunnel structure, making construction easier and reducing use of resources.

Description

Crossroad structure for facilitating the reconstruction of completed intersections

The present invention relates to road structures, particularly road structures at intersections. Background technique

How do you count traffic? Interchange is the best transportation! Among the existing crossroads, the common feature of a crossroad is that the traffic of the two main roads intersected was large, and the first trunk road had serious traffic jams, while the second trunk road had already built underground high clearance. The tunnel or viaduct expressway makes it impossible to build a new tunnel on the first trunk road, and only a viaduct can be built. The construction of the viaduct is not only costly, but also takes up a lot of valuable land resources and is subject to more restrictions, which makes it difficult to renovate such intersections. . This type of intersection is responsible for the left and right traffic pressures of the two directions of the vehicle, such as the straight line, the left and right, and the second main road. As the traffic volume in the city increases, especially the number of cars increases, such intersections It has become a bottleneck in the congestion of urban traffic. Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to solve the problem of intersection traffic in the above-mentioned difficult-to-renovate intersections, and to provide an intersection structure which facilitates the reconstruction of an existing intersection.

The main technical solutions adopted by the present invention are: an intersection structure for facilitating the reconstruction of an existing intersection, including a crossed first trunk road and a second trunk road, the first trunk road and the second trunk road are two-way lanes, There are two low-way tunnels with two-way traffic at the two ends of the first main road near the center of the intersection. The traffic height of the low-rise tunnel is not less than 2 meters and no more than 3 meters. The two low-level tunnels are on the same driving route. The two low-rise tunnels rise to the surface at the center of the intersection. At the location of the low-rise tunnel, the surface of the first trunk road is divided by low-lying tunnels into two left and right ground lanes with opposite driving directions and large vehicles. Forming a U-turn platform between the two surface roads that can be used for large vehicles to walk on the road surface above the low-rise tunnel. The width of the U-turn platform is at least the width of the U-turn lanes with opposite U-turn directions. with.

As a further improvement or preferred embodiment, the present invention may also adopt the following affiliated techniques. Program.

The vehicle passing height of the low tunnel is 2.50-2.60 meters.

The vehicle passing height of the low tunnel is formed by the depth of the bottom surface of the tunnel and the height of the top subgrade of the tunnel.

The driving width of the U-turn platform also includes a sidewalk for pedestrians to cross the first main road. The two surface lanes separated by low tunnels each have at least two lane widths.

In the two low-rise tunnels, on the side farther from the center of each low-rise tunnel, a raised rainwater separation zone is provided at a portion where the low-distance tunnel and the surface road surface are connected.

The invention has the following significant advantages:

1. No need to make any changes to the structure of the second main road, nor to construct a viaduct on the first main road. As long as the two low-profile tunnels and the corresponding two U-turn platforms are built on the first main road, large The car and the vehicles in all directions are diverted. The two low tunnels on the first trunk road form a fast traffic lane for the whole road segment, which can effectively avoid large vehicles occupying the fast lane and slow down the driving speed, making the first trunk road and the second road. The traffic on the main road on the main road has become smoother.

2. The car that goes straight on the first main road can pass through the low-speed tunnel without any hindrance, and the traffic of the first trunk road is obviously improved. This advantage is particularly remarkable in urban traffic dominated by cars.

3. The traffic height of vehicles with low tunnels is less than 3 meters, the construction volume is small, the construction time is short, and the cost is low.

4. In a refinement of the invention, the vehicle passing height of the low tunnel is formed by the sinking depth of the bottom surface of the tunnel and the lifting height of the top subgrade of the tunnel. This semi-sinking and semi-lifting tunnel structure further reduces the depth of ground subsidence required for excavation of low-rise tunnels, avoids encountering groundwater, and makes the foundation pile easier to construct. It can be treated with simple cofferdams, effectively reducing the construction. Time, greatly reducing the construction cost, the broken pieces of the original road surface, the hard sand excavated, the soil can be mixed into the concrete to balance, and used to fill the cushion of the rising part of the road surface, without having to remove all the excavated soil. Reduce the impact of heavy-duty transport vehicles on the traffic during construction. Furthermore, reducing the depth of the ground sinking is also conducive to the migration and reconstruction of the sewer. 5. In a modification of the present invention, the low-long tunnel and the surface road surface are provided with a raised rainwater separation belt, thereby blocking a large amount of rainwater from flowing into the low-rise tunnel through the lane, which not only prevents the vehicle from passing through the water. It is blocked, and the workload of the pump is reduced, and the energy saving of the entire city is remarkable.

6. The invention is applicable to cities in all developed countries, and is particularly suitable for the general transformation of intersections where the number of small cars on the road leads to traffic jams, so that more intersections can be opened with limited resources, without widening. The road surface can achieve the effect of increasing urban traffic roads. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic structural view of a first embodiment of the present invention;

2 is a schematic structural view of Embodiment 2 of the present invention;

Figure 3 is a schematic longitudinal cross-sectional view of the road where the rainwater separation belt is located;

Figure 4 is an embodiment of the present invention applicable to the left-hand rule. BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The width of each lane of the present invention is not limited to the illustration, and the width of the road surface can be designed according to the actual situation. The "cross" described in the present invention is not limited to the vertical intersection, and the intersection angle of the two main roads of the cross is not limited to 90 degrees.

Embodiment 1

Referring to Figure 1, this embodiment is directed to an intersection that has been built on the second main road with an elevated overpass bridge, and the first main road is an intersection of the urban main road, using the crossroad structure provided by the present invention. An example of a transformation.

As shown in FIG. 1, the intersection structure includes a cross-shaped first trunk road 1 and a second trunk road 2, and the first trunk road 1 and the second trunk road 2 are both two-way lanes. At the two ends of the first main road 1 near the center of the intersection, there are two low-way tunnels 3 and 4 which are bidirectionally driven. The traffic height of the low-rise tunnels 3 and 4 is not less than 2 meters and not more than 3 meters. As an optimum value, the traffic height of the two low-rise tunnels 3 and 4 is preferably 2.50-2.60 meters. The two low tunnels 3, 4 are on the same driving route. Two low-rise tunnels 3, 4 rise to the surface at the center of the intersection. Low tunnel At the location where the roads 3, 4 are located, the surface road surface of the first main road 1 is divided by the low tunnel into two surface lanes 5 and 6 which are opposite in direction and are available for large vehicles to travel. On the road surface above the low tunnels 3, 4, a U-turn platform 7 is provided which spans between the two surface lanes 5, 6 for large vehicles to travel. The driving width of the U-turn platform 7 is the sum of the widths of the U-turn lanes 8, 9 opposite the two U-turn directions, plus the width of one of the sidewalks 10. Since the traffic volume on the U-turn platform is the least, it is safer to set the sidewalk on the U-turn platform 7.

The traffic height of the two low-rise tunnels 3 and 4 can be completely formed by the depth of the road surface. However, as a best implementation, the traffic height of the two low-rise tunnels 3 and 4 should be determined by the bottom surface of the tunnel. It is composed of the height of the top subgrade of the tunnel. This semi-sinking and semi-lifting tunnel structure further reduces the depth of grounding required for excavation of low-rise tunnels, making construction easier, reducing construction time, reducing construction costs, and facilitating sewer migration. Reconstruction, the broken pieces of the original pavement, the hard sand excavated, the soil can be mixed into the concrete and balanced, used to fill the cushion of the ascending part of the road surface, without having to remove all the excavated soil, reducing the heavy transport vehicles during construction. The impact on traffic. If the traffic height of the two low-rise tunnels 3 and 4 is 2.50-2.60 meters, combined with the semi-sinking and half-lifting tunnel structure, the total depth of the excavated soil can be about 2.3m during actual construction.

As a preferred embodiment, each of the two surface lanes 5, 6 should have a width of at least two lanes so that the vehicle that turns around the U-turn lanes 8, 9 does not interfere with the straight-through vehicle.

In order to prevent a large amount of rainwater from flowing into the two low-rise tunnels 3, 4 through the lane, the two low-lying tunnels can be located farther from the center of the intersection, that is, the position shown by A and B in Fig. 1, in the low tunnel. A raised rainwater separation belt is provided at a portion that is connected to the surface road surface.

The structure of the rainwater separation belt can be as shown in Fig. 3. The base point is set at about 60-80m before the low tunnel opening. At this base point, the slope is upwards about 15-20m, and after the increase of 0.60-0.80m, the slope turns flat about 15m long. 20m, then go down into the low tunnel.

In order to better block rainwater from entering low-rise tunnels, light-transparent canopies can be added at the entrances and exits of low-rise tunnels to effectively prevent the impact of rainwater on low-rise tunnels.

The main mode of the present embodiment is that the straight car on the first main road 1 passes through the two low-rise tunnels 3, 4 and passes through without obstacles; the straight-line large vehicle on the first main road 1 Driving on the left and right surface lanes 5 and 6 of the low tunnel; all left-turning vehicles on the first trunk road 1 first pass the intersection, then turn around on the U-turn platform 7, and then turn right into the second trunk road 2; All the U-turn vehicles on the first main road 1 do not need to cross the intersection, but use the U-turn lane 8 on the U-turn platform 7 before the intersection; all the straight-through vehicles on the second main road 2 can be crossed from the original overhead Passing on the bridge 11; all left-turning vehicles on the second main road 2 do not directly traverse the first main road 1, but turn right into the first main road 1 first, and then use the U-turn lane 9 on the U-turn platform 7 to turn around; All the U-turn vehicles on the main road 2 are turned around via the U-turn lane 12 under the elevated overpass bridge 11.

It can be seen from the above-mentioned mode of passage that the crossroad structure provided by the utility model enables the large and small vehicles and the vehicles in all directions to be driven to run, and the two low-rise tunnels of the first trunk road constitute a fast passing lane of the whole road segment, which can effectively avoid large vehicles. It takes the fast-track driving and slows down the driving speed, making the traffic flow on the first trunk road and the second trunk road smoother.

Embodiment 2

Referring to Fig. 2, the present embodiment is directed to an intersection where a high clearance tunnel 13 has been built on the second main road 2, and the first main road 1 is an intersection of the urban main road, which is constructed by the crossroad structure provided by the present invention. An example of a transformation.

The road structure of the first main road 1 of this embodiment adopts the same structure as that of the first embodiment. The mode of the present embodiment is basically the same as that of the first embodiment except that all the straight-through vehicles on the second main road 2 pass through the original high clearance tunnel 13 . This embodiment has the same advantages as Embodiment 1.

Both the first embodiment and the second embodiment are directed to countries and regions traveling to the right, but the present invention is equally applicable to countries and regions traveling to the left. For example, flipping Figure 2 horizontally by 180 degrees into the embodiment shown in Figure 4 is an example of a rule applicable to the left line. The same reference numerals are used for the same structures in FIG. 4 and FIG. 2 and will not be described again.

Claims

1. The crossroad structure for facilitating the reconstruction of the completed intersection, including the crossed first trunk road (1) and the second trunk road (2), the first trunk road (1) and the second trunk road (2) are both The lane is characterized by: two low-way tunnels (3, 4) with two-way traffic at the ends of the first main road (1) near the intersection, and the traffic height of the low-rise tunnels (3, 4) is not Below 2 meters and no more than 3 meters, two low tunnels are on the same driving route, and two low tunnels (3, 4) rise to the surface at the center of the intersection, at the location of the low tunnel, first The surface road of the trunk road (1) is divided by the low tunnel into two surface lanes (5, 6) with opposite directions of travel and which can be used for large vehicles to walk. A road above the low tunnel forms a span across the two. a U-turn platform between the surface lanes for large vehicles to walk

(7) The driving width of the U-turn platform (7) is at least the sum of the widths of the U-turn lanes (8, 9) with opposite U-turn directions.

2. The crossroad structure for facilitating the reconstruction of a completed intersection as claimed in claim 1, characterized in that: the passing height of the low tunnel (3, 4) is 2.50-2.60 meters.

3. The intersection structure for facilitating the reconstruction of an existing intersection according to claim 1 or 2, characterized in that: the traffic height of the low tunnel (3, 4) is under the road surface at the bottom of the tunnel. The sinking depth is combined with the top subgrade lift height of the tunnel.

4. The crossroad structure for facilitating the reconstruction of an existing intersection as claimed in claim 1, characterized in that: the driving width of the U-turn platform (7) further comprises a sidewalk for pedestrians to cross the first main road (10) ).

5. The crossroad structure for facilitating the reconstruction of an existing intersection as claimed in claim 1, characterized in that: said two surface lanes (5, 6) separated by a low tunnel, each The surface lane has at least two lane widths.

6. The crossroad structure for facilitating the reconstruction of an existing intersection as claimed in claim 1, wherein: in said two low tunnels (3, 4), in each of the low tunnels The side far from the center of the intersection is located at the junction of the low tunnel and the surface road Rising rainwater separation belt