WO2021036902A1

WO2021036902A1 - Interchange overpass bridge

Info

Publication number: WO2021036902A1
Application number: PCT/CN2020/110267
Authority: WO
Inventors: 李文彬
Original assignee: 李文彬
Priority date: 2019-08-28
Filing date: 2020-08-20
Publication date: 2021-03-04
Also published as: CN111441205A

Abstract

Disclosed is an interchange overpass bridge, comprising an overpass-type traffic bridge (1) and a horizontal crossing road (2) below same, wherein at least one branch of the overpass-type traffic bridge (1) comprises an ascending ramp (11) and a descending ramp (12) that are located in the same branch; a straight lane (21) located above the horizontal crossing road (2) is arranged between the ascending ramp (11) and the descending ramp (12); a bridge floor exhibition area (14) in communication with at least two of the ascending ramp (11), the descending ramp (12) and a bridge floor intersection is arranged between the ascending ramp (11) and the descending ramp (12); a culvert with a clearance height for allowing vehicles to pass through same is arranged between the bridge floor exhibition area (14) and the straight lane (21); the corresponding straight lane (21) in the same branch road section is provided with a concave road section located at a culvert opening section; a downhill crest of the concave road section is located in front of a culvert opening; and an uphill crest intersection of the concave road section is located behind the culvert opening. The overpass bridge is provided with a large overpass bridge overall bridge floor, and the requirements of the vehicles, such as turning right, turning left, going straight, turning around, and parking and waiting, are met.

Description

Interchange

Technical field

The invention belongs to the field of overpass engineering, and in particular relates to an interchange type overpass.

Background technique

With the development of society, urban traffic problems have become more and more prominent, and problems such as traffic congestion, traffic accidents, and urban traffic pollution cannot be effectively solved. There is an urgent need to accelerate the construction of urban three-dimensional traffic, especially the three-dimensional transformation of urban crossroads. Construction, pavement width, ramp length, slope, rebuildable area of intersection, traffic mode, vehicle speed, etc. all affect the design of the reconstruction of the traffic bridge. However, the existing technology cannot effectively transform most intersections, and the three-dimensional two-way four-lane intersection is even more difficult to transform.

The prior art usually has problems such as long design ramps, high requirements for road width, large construction area, and high construction costs. For example, the Chinese invention patent with the announcement number CN203320369U discloses the "Straight Grade Crossing Roundabout Traffic Bridge". The bridge deck adopts the roundabout traffic mode and cancels the setting of traffic lights. First of all, if this kind of bridge deck design meets the turning needs of large vehicles, a large turning radius needs to be reserved on the bridge deck, resulting in a large area of the central island and the central island area cannot be effectively used; and the overall traffic bridge occupies a large area. , Some intersections cannot be designed and constructed. Secondly, when vehicles make a U-turn on the deck of this kind of traffic bridge, they also need to pass through the roundabout, which increases the traffic burden on the roundabout.

In addition, when the vehicles are walking along the roundabout, the speed is not high, resulting in a traffic bridge used to relieve traffic pressure, which increases the period of vehicle retention, which is counterproductive; and in the roundabout mode, there is a short crossing when the vehicles enter and exit the roundabout, and go up. Traffic accidents are prone to occur between vehicles and descending vehicles. On the one hand, the speed of the vehicle is further reduced. On the other hand, it is easy to block the upward exit and downward entrance, which affects smooth traffic.

technical problem

The present invention aims to provide an interchange type overpass to solve the problem of slow vehicle traffic speed caused by all vehicles in the prior art that need to enter roundabouts, increase the overall area of the bridge deck, and optimize multiple traffic modes.

Technical solutions

An interchange type overpass includes an upper-span traffic bridge and a level crossing road below it. At least one limb of the upper-span traffic bridge includes an up-ramp and a down-ramp on the same limb. A leveling ramp is provided between the up-ramp and the down-ramp. Cross the through lane on the road; between the up ramp and the down ramp, there are at least two bridge deck exhibition areas that communicate with the up ramp, down ramp, and bridge intersections. There is a bridge deck exhibition area between the bridge deck exhibition area and the through lane below. For culverts with headroom for vehicles, the through lane corresponding to the same limb road section is provided with a concave section located at the culvert opening section, and the downward slope top intersection of the concave section is located in front of the culvert and the upper slope top of the concave section The intersection is behind the culvert.

Preferably, the inter-limb canopy exhibition area is also interconnected with the bridge intersection, and the bridge canopy exhibition area is also interconnected with the down ramp and the bridge intersection.

Preferably, the bridge-level intersection is provided with an intersection signal light facility, or the bridge-level intersection is an island-round intersection.

Preferably, one side of the bridge support body of the up ramp and the down ramp is adjacent to the through lane, and the other side is adjacent to the non-motorized vehicle lane or the sidewalk.

Preferably, a horizontal horizontal road and a longitudinal under-crossing road are provided under the upper-span traffic bridge. The horizontal road includes horizontal motor vehicle lanes and level non-motor vehicle lanes arranged in sequence from the middle of the road to the side of the road. The under-crossing motor vehicle lane and the under-crossing non-motor vehicle lane are arranged in sequence from the middle of the road to the side of the road. The horizontal motor vehicle lane and the under-crossing motor vehicle lane are both the through lanes. The under-crossing non-motor vehicle lane is divided into the position close to the horizontal road. At a fork in the road, one exit of the fork leads to a through non-motorized vehicle lane underneath, and the other exit leads to an uphill ramp that intersects with the flat non-motor vehicle lane.

Preferably, the level crossing road further includes a horizontal level crossing sidewalk located on the side of the level crossing non-motorized vehicle lane close to the side of the road, and the side of the under crossing non-motor vehicle lane close to the roadside is provided with a longitudinal level crossing sidewalk that communicates with the horizontal level crossing sidewalk. The bifurcations are arranged at two places on the side of the underpass road and are arranged opposite to each other. Between the two bifurcations, there is an undercrossing sidewalk that intersects three-dimensionally under the horizontal horizontal sidewalk. The undercrossing sidewalk and the vertical horizontal sidewalk pass through. The branch junction and/or the uphill ramp and/or the first crossing passage on the non-motorized vehicle lane are connected.

Preferably, the branch junction and/or the uphill ramp and/or the down-crossing non-motorized vehicle lane are also provided with a second crossing passage connecting the down-crossing sidewalk and the horizontally-crossing sidewalk.

Preferably, the interchange is a four-limb interchange road, and there are two concave road sections, and they are distributed in a one-to-one correspondence with the culverts.

Preferably, at least one of the following spaces is provided with a turning lane that intersects with the level crossing road and the under-crossing road at a position below the bridge intersection, and the following space is selected from the following areas: under the under-crossing road ; And between level crossing roads and under crossing roads; and between level crossing roads and bridge crossings; and above the bridge crossings.

Beneficial effect

The invention provides a new type of interchange scheme with a bridge deck awning exhibition area and a double-concave design for horizontal motor vehicle lanes. The concave design of the through lane makes it possible to build a bridge deck awning exhibition area above the road surface. The upper bridge deck, motor vehicle ramp and the deck canopy exhibition area are connected together to form a large overpass bridge deck, which can meet the needs of vehicles turning right, left, straight, U-turn, parking and waiting. Compared with the existing way that the upper-span bridge can only pass through the island, it reduces the traffic pressure at the bridge intersection, thereby solving the problem of slow vehicle speed caused by all vehicles in the prior art that need to enter the roundabout. The overall area of the bridge deck is increased, and multiple traffic modes can be optimized.

In addition, when the construction space is limited, especially in urban reconstruction, under the same circumstances, the technical solution of the present invention can increase the area of the bridge deck. Compared with the solutions such as multi-layer viaducts, it greatly reduces the cost and shortens the cost. The construction period is shortened, and the energy consumption of vehicles bypassing the multi-storey viaduct is also saved.

Description of the drawings

Fig. 1 is a schematic diagram of an interchange of embodiment 1 of the present invention;

Figure 2 is a schematic diagram of the horizontal road in Figure 1;

Figure 3 is a right side view of the horizontal road in Figure 2;

Fig. 4 is a schematic diagram of the underpass road in Fig. 1;

Figure 5 is a right side view of the underpass road in Figure 4;

Fig. 6 is a schematic diagram of an interchange overpass according to Embodiment 2 of the present invention.

detailed description

Example 1:

The interchange type overpass is mainly composed of an upper-span traffic bridge 1, a level crossing road 2 and a lower crossing road 3. According to the number of roads crossed, it is divided into three-limb interchange roads, four-limb interchange roads and multi-limb interchange roads. This embodiment mainly relates to the upper-span traffic bridge 1 of an interchange, which can be applied to three-limb interchange roads, four-limb interchange roads, and multi-limb interchange roads. In this embodiment, a four-limb interchange road is taken as an example for description.

Referring to Fig. 1, there is shown the interchange structure of the present embodiment, in which the upper-span traffic bridge 1 is a four-limb structure, and the structure of each limb is the same. Specifically, it includes an ascending ramp 11 and a descending ramp 12 on the same limb, and the upper-span traffic bridge 1 is a four-limb structure. Between ramp 11 and down ramp 12, there is a through lane on level crossing road 2, and between up ramp 11 and down ramp 12, there is a bridge deck awning that communicates with up ramp 11, down ramp 12, and bridge intersection 13 Exhibition area 14. Between the two adjacent limbs, there is an ascending ramp 11 for one limb, a descending ramp 12 for the other limb, and an inter-limb canopy exhibition area 15 communicating with the intersection 13 on the bridge.

The bridge intersection 13 is provided with intersection signal light facilities. As an alternative, the bridge intersection 13 can also be set in a circular traffic mode similar to the previous application CN203320369U, that is, a roundabout intersection can be set at the bridge intersection 13.

There are two forms of the above-mentioned through lanes to choose from. One is a traditional straight lane, which means driving in and out in a straight direction; the other is a non-straight lane, which has a certain bend, which may be adjacent or Turning between the separated lanes, and even turning around.

In this embodiment, the upper-span traffic bridge 1 is equipped with a deck canopy exhibition area 14. The upper-span bridge deck, motor vehicle ramp and the bridge deck canopy exhibition area 14 are connected together to form a large upper-span traffic bridge 1 as a whole deck, which satisfies The vehicle needs to turn right, turn left, go straight, turn around, and stop and wait.

The deck of the upper bridge is divided into lanes for vehicles turning right and turning, and there are no traffic lights. Vehicles can drive directly through under the condition of ensuring safety. No parking is allowed in the lanes for turning right and turning. Vehicles turning left can turn right → U-turn → go straight, or go straight → U-turn → right turn to achieve diversion. The straight of medium and large vehicles can also be diverted by turning right → U-turn → right turn. Traffic rules can be set to prohibit small vehicles from turning left and turning left during a certain period of time. The vehicle passes through the next upper traffic bridge 1 to make a U-turn to ensure smooth traffic flow.

There is an inverted slope at the junction of the upper-span traffic bridge 1 and the main road to reduce the position difference between the upper-span traffic bridge and the main road connection, thereby reducing the slope of the upper-span traffic bridge 1 ramp and increasing the level. The slope of crossing the motor vehicle lane and under the motor vehicle lane plays a regulatory role and can prevent rainwater from ingressing.

Preferably, referring to FIG. 2 and FIG. 3, the schematic diagram of the structure of the interchange level crossing road 2 of the present embodiment is shown. On the basis of the upper-span traffic bridge 1, a level crossing road 2 under the upper-span traffic bridge 1 is added. The level crossing road 2 includes a level crossing motor vehicle lane 21, a level crossing non-motor vehicle lane 22, and a horizontal level crossing sidewalk 23 that are arranged in sequence from the middle of the road to the side of the road. The horizontal motor vehicle lane 21 is a through lane. The bridge deck awning exhibition area 14 has a culvert with clear height between the motor vehicle lane 21 and the horizontal motor vehicle lane 21 for vehicles to pass. The motor vehicle lane 21 has a concave section 24 located at the location of the culvert. The intersection of the concave road section 24 is located at the top of the downhill slope. Before the culvert, the intersection of the uphill slope is located behind the culvert. And because the interchange is a four-leg interchange road, there are two concave road sections 24, and they are distributed in a one-to-one correspondence with the culverts.

One side of the bridge support body of the up ramp 11 and the down ramp 12 is adjacent to the horizontal motor vehicle lane 21, and the other side is adjacent to the horizontal non-motor vehicle lane 22. Between horizontal motor vehicle lane 21, horizontal non-motor vehicle lane 22 and horizontal horizontal sidewalk 23, and between the two lanes horizontally passing motor vehicle lane 21, there are partition walls supported under the deck of upper-span traffic bridge 1 5.

The horizontal motor vehicle lane 21 adopts a double-concave design (a concave design at each end of the upper span bridge culvert), when the clearance height between the horizontal motor vehicle lane 21 and the bridge deck canopy exhibition area 14 is equal to the bridge culvert clearance height H2 , To meet the needs of vehicle traffic, start to design and build the bridge deck exhibition area 14 to ensure the safe traffic of vehicles. When the double-concave design cannot be implemented in some special environments, a concave section at one end or no concave section can be constructed, and the corresponding section of the bridge will be cancelled. In the canopy exhibition area 14, the length of the motor vehicle ramp corresponding to the horizontal motor vehicle lane 21 changes according to the change of the headroom H2.

The horizontal non-motor vehicle lane 22 also has a double-concave design (one concave design at each end of the bridge), which ensures the clearance height between the horizontal non-motor vehicle lane 22 and the upper bridge deck, which is convenient for the right side of the upper bridge. Turn the road to increase the turning radius design.

Preferably, referring to Figs. 4 and 5, there are shown schematic structural diagrams of the underpass road 3 of the interchange in this embodiment. On the basis of the level crossing road 2, an under crossing road 3 located under the level crossing road 2 and at a three-dimensional intersection is added. The underpassing road 3 includes an underpassing motor vehicle lane 31, an underpassing non-motor vehicle lane 32, and a longitudinal horizontal sidewalk 33 that are sequentially arranged from the middle of the road to the side of the road. The undercrossing motor vehicle lane 31 is a through lane whose lowest point is located below the leveling motor vehicle lane 21 of the level crossing road 2. The longitudinal horizontal sidewalk 33 and the horizontal horizontal sidewalk 23 communicate with each other in plane.

The under-crossing non-motorized vehicle lane 32 is provided with a fork 34 near the level crossing road 2. One exit of the fork 34 leads to the under-crossing non-motorized vehicle lane 30, and the other exit leads to the horizontal non-motorized vehicle road 22. Interchangeable uphill ramp 35; two branch roads 34 are located on the side of the underpass road 3 and are arranged opposite to each other. Between the two branch roads 34, there is a downward crossing sidewalk 36 that intersects three-dimensionally under the horizontally crossing sidewalk 23, The downward crossing sidewalk 36 and the longitudinal horizontal crossing sidewalk 33 are connected by the first crossing passage 37 on the uphill ramp 35. The uphill ramp 35 is also provided with a first crossing passage 36 connecting the downward crossing sidewalk 36 and the horizontal crossing sidewalk 23. Two traverse the channel 38.

The underpass motor vehicle lane 31 adopts a single-concave design. When the clearance height between the underpass motor vehicle lane 31 and the bridge deck canopy exhibition area 14 is equal to the bridge culvert headroom height H1, the vehicle traffic needs are met, and the bridge deck canopy exhibition area 14 is designed and constructed. To ensure the safe passage of vehicles, the length of the motor vehicle ramp corresponding to the underpassing motor vehicle lane 31 changes according to the change of the headroom H1. The underpass non-motor vehicle lane 32 has a double-concave design (a concave design at each end of the bridge), which ensures the clearance between the underpass non-motor vehicle lane 32 and the upper bridge deck, and facilitates the right turn of the bridge to increase the road. Large turning radius design.

The interchangeable overpass in this embodiment includes an upper-span traffic bridge, an upper-span ramp, a deck canopy exhibition area 14, a horizontal motor vehicle lane 21, a horizontal non-motor vehicle lane 22, a horizontal horizontal sidewalk 23, a motor vehicle lane 31 under Crossing non-motorized vehicle lane 32, under-crossing sidewalk 36, pedestrian step ladder 39, bridge support 4, the interchange is divided into upper, middle and lower three layers, which are the upper-span passage layer, the horizontal passage layer and the lower passage layer. When the height of the small motor vehicle in the direction of the passage is less than the headroom height H1, it will directly pass through the motor vehicle lane 31; when the motor vehicle turns right, left, U-turn, and the vehicle height is greater than or equal to the headroom height H1, it passes through the upper ramp and the bridge, and Follow the instructions to drive through lanes; when the height of the small motor vehicle in the horizontal passage direction is less than the headroom height H2, directly drive through the horizontal motor vehicle lane 21, and the motor vehicle turns right, left, U-turn, and the vehicle height is greater than or equal to the headroom height H2, Pass through the on-ramp and upper bridge according to the instructions, and non-motorized vehicles should drive along the non-motorized vehicle lane 22 horizontally and under the non-motorized vehicle lane 32, and the non-motorized vehicle two-way passage to realize the right turn, left turn and go straight of non-motorized vehicles. , U-turn; pedestrians walk along the sidewalk 33 horizontally vertically, horizontally horizontally through the sidewalk 23, down through the sidewalk 36, pedestrian ladder 39, and the first crossing channel 37 and the second crossing channel in the form of a zebra crossing between them.

Preferably, the two-way four-lane and the two-way four-lane intersection are designed as 1, 1-1, 1 (the first 1 represents the number of one-way through motor vehicle lanes, and the second 1 represents the one-way motor vehicle lanes of the ramp in the direction of the underpass. The third 1 represents the one-way number of horizontal and straight motor vehicle lanes, and the fourth 1 represents the one-way number of ramp motor vehicle lanes in the direction of the horizontal crossing), and the road width is 27 meters (including one-way straight motor vehicle lanes of 3.5 meters and motor vehicles). The ramp includes 4.5 meters of guardrails, 2.5 meters of non-motorized vehicle lanes, and 3 meters of sidewalks), and the minimum design requirements for road width can reach 23 meters (including 3.5 meters of one-way straight motor vehicle lanes, motor vehicle ramps of 4.5 meters including guardrails, and non-motorized vehicle lanes of 2 meters. Sidewalk 1.5 meters), the ramp length is 50 meters, the clearance height is 2.2 meters, the bridge deck thickness is 0.5 meters, the horizontal passage is 0.35 meters thick, the bridge body and the main road are 0.3 meters high, and the small car straight lane slope is 6.5%. The ramp gradient is 5.5% (small vehicles have strong climbing ability, and the design gradient of straight roads is greater than that of the ramp).

Preferably, the two-way six-lane and two-way four-lane intersections are designed as 2, 1-1, and 1 (where 2 represents the number of one-way down-travel motor vehicle lanes), and the two-way six-lane road is designed to be 33 meters wide (where the straight motor vehicle lane 12 Meters, motor vehicle ramp including guardrail 9 meters, non-motor vehicle lane 6 meters, sidewalk 6 meters), the ramp length is 50 meters, the clearance height is 2.2 meters, the bridge deck is 0.5 meters thick, and the horizontal passage is 0.35 meters thick. The road junction is 0.3 meters high, the slope of the small car through lane is 6.5%, and the ramp slope is 5.5%.

The relationship between road width and bridge type is:

The three-dimensional reconstruction of crossroads should be based on the design of reasonable traffic patterns based on the total road width, traffic flow, and overall urban planning.

Preferably, the two-way six-lane road and the two-way four-lane intersection are designed as 2, 1-1, 1, and the two-way six-lane road is designed to be 33 meters wide, the clearance height in the downward direction is 3.5 meters, and the horizontal passage is 0.35 meters thick. The height of the junction between the body and the main road is 0.3 meters, the length of the ramp in the downward direction is 75 meters, the slope of the downward through-going lane is 6%, the clearance height in the horizontal direction is 2.2 meters, the bridge deck thickness is 0.5 meters, and the length of the ramp in the horizontal direction is 50 meters. , The slope of the horizontal through lane is 6.5%, the ramp slope in the horizontal direction is 5.5%, and the ramp slope in the undercross direction is 3.5%.

Different headroom heights and lane slopes have different lane lengths. A reasonable headroom height should be designed according to the actual traffic conditions at the intersection and future road planning.

Example 2:

Because the interchangeable overpass of embodiment 1 has only a three-layer structure, only straight or turning lanes can be set under the upper bridge deck, and the corresponding turning or straight driving needs to be realized through the bridge deck. The bridge deck can sometimes be under heavy traffic pressure, and there are still traffic jams. problem.

Referring to Fig. 6, the difference between this embodiment and embodiment 1 is that the interchange bridge has been changed from the original three-layer structure to a five-layer structure, and the under-crossing steering lane 205 under the under-crossing through lane 201 is newly added. Cross the upper-span steering lane 202 between the through lane 203 and the upper-span deck 204. Small vehicles can go straight and turn quickly through its dedicated lanes, and can also be diverted through the bridge deck. Vehicles turn around and continue to pass through the dedicated lanes of the bridge deck exhibition area, and large and medium-sized vehicles pass through the bridge deck. As the number of layers of the overpass has been increased, the height of the overpass has been increased accordingly. In order to meet the design requirements of the slope, the ramp length needs to be increased accordingly.

The down-crossing through lane 201 turns from downhill to parallel driving at about half of the ramp, and then turns to go uphill at about half of the ramp on the opposite side.

Undergoing through the turning lane 205, you need to continue driving downhill at one-half of the ramp, and then divide it into a left-turn lane and a right-turn lane. The left-turn lane turns to drive uphill, the right-turn lane and the left-turn lane in the opposite direction Go and drive, gradually merging lanes.

Crossing the straight lane 203, turn from downhill to uphill at about one-quarter of the ramp, turn from uphill to parallel at about one-half of the ramp, and then turn from parallel to about one-half of the ramp on the opposite side. Turn downhill and turn from downhill to uphill about three-quarters of the ramp.

The upper-span steering lane 202 turns from downhill to uphill at about one-fourth of the ramp, and continues uphill at one-half of the ramp, and then divides it into a left-turn lane and a right-turn lane, and the left-turn lane turns After that, drive downhill, turn from downhill to uphill at about a quarter of the ramp, turn right in the lane and drive in the opposite left lane, and gradually merge the lanes.

Claims

The interchange type overpass is characterized in that it includes an upper-span traffic bridge and a level crossing road below it. At least one limb of the upper-span traffic bridge includes an ascending ramp and a descending ramp on the same limb, between the ascending ramp and the descending ramp There is a through lane on the level crossing road; between the up ramp and the down ramp, there are at least two inter-connected bridge deck exhibition areas among the up ramp, down ramp, and bridge intersections, and the bridge deck exhibition area is connected directly below There are culverts with clear height for vehicles to pass between the lanes, and the through lanes corresponding to the same limb road sections are provided with a concave section located at the culvert opening section, and the downhill slope top intersection of the concave section is located in front of the culvert opening and the concave section The intersection of the uphill slope is located behind the culvert opening.
The interchangeable overpass according to claim 1, characterized in that: between two adjacent limbs, there is an inter-limb canopy exhibition area where the entrance and the ascending ramp of one limb are interconnected, and the exit leading to the descending ramp of the other limb. The exhibition area is on the periphery of the bridge crossing.
The interchangeable overpass according to claim 2, characterized in that the inter-limb canopy exhibition area also communicates with the bridge intersection, and the bridge canopy exhibition area also communicates with the down ramp and the bridge intersection.
The interchangeable overpass according to claim 1, characterized in that the intersection of the bridge is provided with an intersection signal light facility, or the intersection of the bridge is a roundabout.
The interchange overpass according to claim 1, characterized in that: one side of the bridge support body of the up ramp and the down ramp is adjacent to the through lane, and the other side is adjacent to the non-motorized vehicle lane or the sidewalk.
The interchangeable overpass according to any one of claims 1 to 5, characterized in that: under the upper-span traffic bridge, there are horizontal horizontal roads and longitudinal under-crossing roads, and the horizontal roads include from the middle of the road to the side of the road. Sequentially set horizontal crossing motor vehicle lanes and level crossing non-motorized vehicle lanes. Under-crossing roads include under-crossing motor vehicle lanes and under-crossing non-motor vehicle lanes set in sequence from the middle of the road to the curb. Both horizontal crossing motor vehicle lanes and under-crossing motor vehicle lanes are described above. A through lane, a non-motorized vehicle lane underneath, is provided with a bifurcation near the level crossing road. One exit of the bifurcation leads to the undercross through non-motorized vehicle lane, and the other exit leads to the upper crossing that intersects the level non-motor vehicle lane. Ramp.
The interchangeable overpass according to claim 6, characterized in that: the level crossing road also includes a lateral level crossing sidewalk located on the side of the level crossing non-motorized vehicle lane near the roadside, and the side of the undercrossing non-motor vehicle road near the roadside is provided with A longitudinal horizontal sidewalk intersecting with a horizontal horizontal sidewalk. The bifurcations are arranged at two places on one side of the underpass and are arranged opposite to each other. Between the two bifurcations, there is a three-dimensionally intersecting underpass under the horizontal horizontal sidewalk. , The downward crossing sidewalk and the longitudinal horizontal sidewalk are connected by the first crossing passage on the bifurcation and/or the uphill ramp and/or the downward crossing non-motorized vehicle lane.
The interchange according to claim 7, characterized in that: the branch junction and/or the uphill ramp and/or the underpass non-motorized vehicle lane are also provided with a second cross that connects the underpass sidewalk and the horizontal horizontal sidewalk. Pierce the channel.
The interchange overpass according to claim 6, characterized in that: the interchange is a four-leg interchange road, and there are two concave road sections, which are distributed in a one-to-one correspondence with the culverts.
The interchangeable overpass according to claim 6, characterized in that: at least one of the following spaces is provided with a turning lane that intersects with the level crossing road and the undercrossing road space at a position below the bridge intersection, the The following space is selected from the following areas:

Underneath the road;

And between the level crossing road and the under crossing road;

And between level crossing road and bridge intersection;

Above the bridge intersection.