A mountainous city cross-river passage and riverfront road interflow overpass

Abstract

The application discloses a mountainous city cross-river passage and riverbank road intercommunication overpass, which comprises: a bidirectional main road standard riverbank road is arranged along the river from east to west on the ground layer; a bidirectional main road standard cross-river passage is arranged on the ground in two layers from south to north and comprises two one-way cross-river bridges and two one-way tunnels; two ramps from the cross-river passage to the riverbank road are both provided with a two-layer annular rotation 360-degree structure in the middle, namely alpha type ramps; two ramps from the cross-river passage to the riverbank road are both U-shaped back ramps; a ramp from the riverbank road to the cross-river bridge is a bidirectional U-shaped back ramp; a ramp from the riverbank road to the cross-river passage tunnel is a right-turn directional ramp and is combined with the main line tunnel of the cross-river passage in the form of a tunnel; a ramp from the riverbank road to the cross-river bridge is a U-shaped back ramp; and a ramp from the riverbank road to the cross-river passage tunnel is a left-turn directional ramp and is combined with the main line tunnel of the cross-river passage in the form of a tunnel. The intercommunication overpass realizes the connection between the cross-river passage and the riverbank road in the narrow and long riverbank zone between the river and the mountain in the mountainous city, solves the height difference between the upper and lower layers by the ramp along the narrow and long riverbank zone, reasonably utilizes the space between the river and the mountain, avoids ecological damage, saves the land area and expands the application range of the intercommunication overpass of the riverbank zone in the mountainous city.

Description

Technical Field

[0001] This application relates to the field of road traffic technology, and in particular to an interchange connecting a cross-river passage and a riverside road in a mountainous city. Background Technology

[0002] Many cities are built along rivers. As cities expand, transportation must be prioritized to support urban spatial development and economic growth. Therefore, it is necessary to build a backbone road network to connect urban areas on both sides of the rivers.

[0003] Mountain cities are those whose main urban areas are located in mountains, hills, and rugged plateaus, exhibiting a distinct urban form and ecological environment compared to cities in plains areas. Due to topographical constraints, the terrain along rivers in mountain cities is often highly undulating, with steep mountainsides forming riverbanks and narrow riverside areas between the river and the mountains. Therefore, it is particularly important to utilize this narrow space to establish cross-river passages and riverside roads for transportation connections.

[0004] In some related technologies, riverside roads in mountainous cities are laid east-west along the riverbank, and their design elevation must meet flood control requirements. North-south cross-river passages in mountainous cities often take into account the overall terrain of the urban hinterland, and their design elevation is often two levels higher than the riverside road. Furthermore, due to the significant topographical variations in the urban hinterland, access to the urban hinterland often takes the form of tunnels. Conventional interchange construction is difficult in narrow spaces with large elevation differences. Therefore, how to connect and interconnect cross-river bridges, tunnels, and riverside roads in such narrow spaces with significant elevation differences to improve external transportation links to the riverside area and increase travel efficiency is an urgent problem to be solved. Summary of the Invention

[0005] This application provides an interchange connecting a cross-river passage and a riverside road in a mountainous city, in order to solve the problem in related technologies of connecting cross-river passage bridges and tunnels with riverside roads in a narrow space with a large elevation difference between the river and the mountain, so as to realize the external transportation connection of the riverside area.

[0006] An interchange connecting a river-crossing passage and a riverside road in a mountainous city includes a riverside road of standard two-way arterial road, situated at ground level along the river in an east-west direction; a river-crossing passage of standard two-way arterial road, situated at ground level in a north-south direction, comprising two one-way river-crossing bridges and two one-way tunnels; two ramps turning right from the river-crossing passage to the riverside road, both employing a two-level circular 360° rotating structure in the middle, i.e., an α-type ramp; and two ramps turning left from the river-crossing passage to the riverside road, employing a first U-shaped turnaround ramp and a second U-shaped turnaround ramp, respectively. The ramps from Binjiang Road to the cross-river bridge are U-shaped turn-around ramps; the U-shaped turn-around ramps include a third U-shaped turn-around ramp and a fourth U-shaped turn-around ramp; the ramps from Binjiang Road to the cross-river tunnel are right-turn directional ramps that merge with the main tunnel of the cross-river tunnel in the form of a tunnel; the ramps from Binjiang Road to the cross-river bridge are fourth U-shaped turn-around ramps; the ramps from Binjiang Road to the cross-river tunnel are left-turn directional ramps that merge with the main tunnel of the cross-river tunnel in the form of a tunnel.

[0007] The riverside road of the standard two-way main road includes east-west roads and west-east roads.

[0008] The two one-way cross-river bridges include north-south lanes and north-south lanes; the two one-way tunnels include north-south lanes and north-south lanes.

[0009] In a preferred embodiment of the present invention, the two ramps leading from the cross-river passage to the riverside road include a ramp leading from a north-south one-way tunnel to the west-east riverside road and a ramp leading from a north-south cross-river bridge to the east-west riverside road. Both ramps are α-type ramps. The ramp from the north-south one-way tunnel to the east-west riverside road connects at its entrance to the deceleration lane section of the north-south tunnel of the cross-river passage and at its exit to the acceleration lane section of the east-west riverside road. A first two-layered 360° rotating ring structure is provided in the middle, which crosses the main line of the riverside road twice and is mainly used to absorb one level of elevation difference. Similarly, the ramp from the north-south cross-river bridge to the east-west riverside road connects at its entrance to the deceleration lane section of the north-south cross-river bridge and at its exit to the acceleration lane section of the east-west riverside road. A second two-layered 360° rotating ring structure is provided in the middle, which crosses the main line of the riverside road twice and is mainly used to absorb one level of elevation difference.

[0010] In a preferred embodiment of the present invention, the centerline of the first and second layer annular rotating 360° structures adopts a circular width with a turning radius of ≥40m, and the starting end of the two layers of annular rotating 360° structures is located one layer above the ending end. The two layers of annular rotating 360° structures can digest one layer of height difference in a narrow space with a large height difference between the river and the mountain.

[0011] In a preferred embodiment of the present invention, the two ramps leading from the cross-river passage to the riverside road include a ramp leading from the north-south one-way tunnel to the east-west riverside road and a ramp leading from the north-south cross-river bridge to the west-east riverside road. Both ramps employ U-shaped hairpin turns. The sections from the starting points of the two ramps to the first and second U-shaped hairpin turns are collinear with the aforementioned α-type ramps. After passing through the U-shaped hairpin turns, the exits connect to the acceleration lane section of the cross-river passage.

[0012] In a preferred embodiment of the present invention, the ramp from the riverside road to the cross-river bridge adopts a two-way U-shaped turnaround ramp. Its entrance connects to the deceleration lane section of the east-west riverside road, its exit connects to the acceleration lane section of the north-south cross-river bridge, and the third and fourth U-shaped turnarounds cross over the main line of the riverside road. The southern end of the third U-shaped turnaround connects to the southern end of the fourth U-shaped turnaround, and the northern section of the fourth U-shaped turnaround connects to the ramp exit. This two-way U-shaped turnaround ramp structure allows for the alignment of the ramp within a narrow space with a significant elevation difference between the river and the mountain, avoiding excessive land occupation and minimizing the impact of the elevation difference between the starting and ending points.

[0013] In a preferred embodiment of the present invention, the ramp entrance from the riverside road to the cross-river tunnel is connected to the deceleration lane section of the west-east riverside road, and the exit is connected to the acceleration lane section of the north-south cross-river tunnel. It merges with the main tunnel of the cross-river tunnel in the form of a tunnel, and must meet the requirements of the "Design Code for Urban Underground Road Engineering" (CJJ221-2015).

[0014] In a preferred embodiment of the present invention, the ramp from the riverside road to the cross-river bridge is a U-shaped turnaround ramp. The entrance connects to the deceleration lane section of the east-west riverside road, the exit connects to the acceleration lane section of the north-south cross-river bridge, and the middle section is a fourth U-shaped turnaround section. This ramp shares multiple sections with other ramps, saving land area and engineering investment.

[0015] In a preferred embodiment of the present invention, the ramp from the riverside road to the cross-river tunnel is a left-turn directional ramp. Its entrance is connected to the deceleration lane section of the east-west riverside road, and its exit is connected to the acceleration lane section of the north-south cross-river tunnel. The ramp crosses the riverside road and passes under the riverside tunnel. It merges with the main tunnel of the cross-river tunnel in the form of a tunnel and must meet the requirements of the "Code for Design of Urban Underground Road Engineering" (CJJ221-2015). Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the travel routes provided in this application embodiment, showing two α-shaped ramps for turning right from the cross-river passage to the riverside road and two U-shaped turnaround ramps for turning left from the cross-river passage to the riverside road.

[0017] Figure 2 This application provides a schematic diagram of the travel routes provided in its embodiments, including a directional ramp for turning right from the west-east riverside road to the cross-river tunnel and a U-shaped turnaround ramp for turning left from the west-east riverside road to the cross-river bridge.

[0018] Figure 3 This is a schematic diagram of the travel routes provided in this application, showing a two-way U-shaped turnaround ramp from the east-west riverside road to the cross-river bridge and a directional ramp from the east-west riverside road to the cross-river tunnel.

[0019] Figure 4 This is a schematic diagram of the overall structure of the interchange between the cross-river passage and the riverside road in a mountainous city, provided in an embodiment of this application.

[0020] In the diagram: 1. A riverside road with standard two-way arterial road; 2. A cross-river passage with standard two-way arterial road; ① A directional ramp from the riverside road to the cross-river passage tunnel; ② A U-shaped ramp from the riverside road to the cross-river bridge; ③ An α-shaped ramp from the north-south one-way tunnel to the west-east riverside road; ④ A U-shaped ramp from the north-south one-way tunnel to the east-west riverside road; ⑤ A two-way U-shaped ramp from the riverside road to the cross-river bridge; ⑥ A directional ramp from the riverside road to the cross-river passage tunnel; ⑦ An α-shaped ramp from the north-south cross-river bridge to the east-west riverside road; ⑧ A directional ramp from the north-south cross-river bridge to the west-east riverside road. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] This application provides an interchange connecting a cross-river passage and a riverside road in a mountainous city, in order to solve the problem in related technologies of connecting cross-river passage bridges and tunnels with riverside roads in a narrow space with a large elevation difference between the river and the mountain, so as to realize the external transportation connection of the riverside area.

[0023] Please see Figures 1-4An interchange connecting a river-crossing passage and a riverside road in a mountainous city includes a riverside road (1) of standard two-way arterial road, which is set at ground level in an east-west direction along the river; a river-crossing passage of standard two-way arterial road, which is set at ground level in a north-south direction and includes two one-way river-crossing bridges (2) and two one-way tunnels; the two ramps from the river-crossing passage to the riverside road both adopt a two-layer ring rotating 360° structure with a middle section, i.e., an α-type ramp; the two ramps from the river-crossing passage to the riverside road each adopt a first U-shaped turnaround ramp. The second U-shaped turnaround ramp; the ramp from Binjiang Road to the cross-river bridge adopts a two-way U-shaped turnaround ramp; the two-way U-shaped turnaround ramp includes the third and fourth U-shaped turnaround ramps; the ramp from Binjiang Road to the cross-river tunnel adopts a right-turn directional ramp, which merges with the main tunnel of the cross-river channel in the form of a tunnel; the ramp from Binjiang Road to the cross-river bridge adopts the fourth U-shaped turnaround ramp; the ramp from Binjiang Road to the cross-river tunnel adopts a left-turn directional ramp, which merges with the main tunnel of the cross-river channel in the form of a tunnel.

[0024] Among them, the riverside road (1) of the standard two-way main road includes the east-west road and the west-east road; the two one-way cross-river bridges (2) include the north-south road and the north-south road; and the two one-way tunnels include the north-south road and the north-south road.

[0025] The two α-shaped ramps leading from the cross-river passage to the riverside road include ramp ③, which connects the north-south one-way tunnel to the west-east riverside road, and ramp ⑦, which connects the north-south cross-river bridge to the east-west riverside road. Ramp ③ connects at its entrance to the deceleration lane section of the north-south tunnel of the cross-river passage and at its exit to the acceleration lane section of the west-east riverside road. It features a first two-layered, 360° rotating ring structure, which crosses the main line of the riverside road and ramp ⑥ twice. Ramp ⑦ connects at its entrance to the deceleration lane section of the north-south cross-river bridge and at its exit to the acceleration lane section of the east-west riverside road. It features a second two-layered, 360° rotating ring structure, which crosses the main line of the riverside road and ramp ① twice.

[0026] refer to Figure 1 and Figure 4 In some preferred embodiments, the travel routes of the two α-shaped ramps ③ and ⑦ turning right from the cross-river passage to the riverside road, and the two U-shaped turnaround ramps ④ and ⑧ turning left from the cross-river passage to the riverside road are described and explained in detail as follows:

[0027] Ramp ③ and ⑦ are two levels apart at their starting and ending points. The two-level circular 360° rotating structure can absorb one level difference. The centerline of the two-level circular 360° rotating structure adopts a circular width with a turning radius of ≥40m, and its starting point is located one level above the ending point.

[0028] The two U-shaped turn-around ramps from the cross-river passage to the riverside road include ramp ④, which turns left from the north-south one-way tunnel to the east-west riverside road, and ramp ⑧, which turns left from the north-south cross-river bridge to the west-east riverside road.

[0029] Example 1: A combination of a two-layer annular 360° rotating structure and a U-shaped turning structure.

[0030] The entrance section of ramp ④ is collinear with ramp ③; the section from its entrance to the end of the first U-shaped turn is collinear with ramp ③; the first U-shaped turn of ramp ④ is collinear with the eastern half of the first two-layer circular 360° rotating structure of ramp ③, and the collinear section is a whole; ramp ④ and ramp ③ share the same carriageway; the entrance and exit ends of the first U-shaped turn of ramp ④ are connected to the first two-layer circular 360° rotating structure of ramp ③; the exit of ramp ④ is connected to the acceleration lane section of the east-west riverside road.

[0031] The entrance section of ramp ⑧ is co-aligned with ramp ⑦; the section from its entrance to the end of the second U-shaped turn is co-aligned with ramp ⑦; the second U-shaped turn of ramp ⑧ is co-aligned with the western half of the second two-layer circular 360° rotating structure of ramp ⑦, and the co-aligned section is a single unit; ramp ⑧ and ramp ⑦ share the same carriageway; the entrance and exit ends of the second U-shaped turn of ramp ⑧ are connected to the second two-layer circular 360° rotating structure of ramp ⑦; the exit of ramp ⑧ connects to the acceleration lane section of the west-east riverside road.

[0032] The traffic flow path is as follows:

[0033] Ramp ③: North-South Road – First U-shaped Hairpin Turn – First Two-Layer 360° Circular Rotating Structure – East-West Road;

[0034] Ramp ⑦: North-South direction road – Second U-shaped hairpin turn – Second two-layer circular 360° rotating structure – East-West direction road;

[0035] Ramp ④: North-South Road – First U-shaped hairpin bend – East-West Road;

[0036] Ramp ⑧: North-Southbound lane – Second U-shaped hairpin turn – West-Eastbound lane.

[0037] In Example 2, the two-layer annular rotating 360° structure and the U-shaped turning structure are set independently.

[0038] The entrance section of ramp ④ is collinear with ramp ③; the section from its entrance to the end of the first U-shaped turn is collinear with ramp ③; the first U-shaped turn of ramp ④ and the eastern half of the first two-layer circular rotating 360° structure of ramp ③ are independently set; the entrance and exit ends of the first U-shaped turn of ramp ④ are connected to the first two-layer circular rotating 360° structure of ramp ③; the exit of ramp ④ is connected to the acceleration lane section of the east-west riverside road.

[0039] The entrance section of ramp ⑧ is collinear with ramp ⑦; the section from its entrance to the end of the second U-shaped turn is collinear with ramp ⑦; the second U-shaped turn of ramp ⑧ and the western half of the second two-layer circular rotating 360° structure of ramp ⑦ are independently set up; the entrance and exit ends of the second U-shaped turn of ramp ⑧ are connected to the second two-layer circular rotating 360° structure of ramp ⑦; the exit of ramp ⑧ is connected to the acceleration lane section of the west-east riverside road.

[0040] The traffic flow path is as follows:

[0041] Ramp ③: North-South Road – First two-layer circular rotating 360° structure – East-West Road;

[0042] Ramp ⑦: North-South facing road – Second two-layer circular rotating 360° structure – East-West facing road;

[0043] Ramp ④: North-South Road – First U-shaped hairpin bend – East-West Road;

[0044] Ramp ⑧: North-Southbound lane – Second U-shaped hairpin turn – West-Eastbound lane.

[0045] refer to Figure 2 , Figure 3 and Figure 4 The following is a detailed explanation of the travel routes from the riverside road to the cross-river passage:

[0046] refer to Figure 2 and Figure 4 In some preferred embodiments, the right-turn directional ramp from the riverside road to the cross-river tunnel includes ramp ①. The U-shaped turnaround ramp from the riverside road to the cross-river bridge includes ramp ②. The entrance of ramp ① connects to the deceleration lane section of the west-eastbound riverside road, and its exit connects to the acceleration lane section of the north-southbound cross-river tunnel. The entrance section of ramp ② is collinear with ramp ①, and its exit section is collinear with ramp ⑤. The fourth U-shaped turnaround section of ramp ② is collinear with ramp ⑤. The section from the separation point of ramp ② and ramp ① to the merging point with ramp ⑤ passes under the riverside tunnel and through various ramps.

[0047] refer to Figure 3 and Figure 4In some preferred embodiments, the bidirectional U-shaped turnaround ramp from the riverside road to the cross-river bridge includes ramp ⑤. The left-turn directional ramp from the riverside road to the cross-river tunnel includes ramp ⑥. The entrance of ramp ⑤ connects to the deceleration lane section of the east-west riverside road, and its exit connects to the acceleration lane section of the north-south cross-river bridge. The third U-shaped turn of ramp ⑤ crosses over the main line of the riverside road, and its southern end connects to the southern end of the fourth U-shaped turn. The northern section of the fourth U-shaped turn connects to the exit of ramp ⑤. The entrance section of ramp ⑥ is collinear with ramp ⑤, and its exit section is collinear with ramp ①. The section between the separation point of ramp ⑥ and ramp ⑤ and the merging point with ramp ① crosses over the riverside road and passes under the riverside tunnel.

[0048] The traffic flow path is as follows:

[0049] Ramp ①: West-Eastbound ramp – North-Southbound ramp;

[0050] Ramp ②: West-Eastbound lane – Fourth U-shaped hairpin turn – North-Southbound lane;

[0051] Ramp ⑤: East-west road – Third U-shaped hairpin bend – Fourth U-shaped hairpin bend – North-South road;

[0052] Ramp 6: East-west road – North-south road.

[0053] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0054] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An interchange connecting a cross-river passage and a riverside road in a mountainous city, characterized in that, It includes: bidirectional The standard riverside road (1) is set at ground level in the east-west direction along the river; the standard cross-river passage in the two-way main road is set at ground level in the north-south direction, and includes two one-way cross-river bridges (2) and two one-way tunnels; the two ramps from the cross-river passage to the riverside road both adopt a two-layer ring rotating 360° structure in the middle, i.e., α-type ramps; the two ramps from the cross-river passage to the riverside road adopt the first U-shaped turnaround ramp and the second U-shaped turnaround ramp respectively; from the riverside road The ramps leading right from Binjiang Road to the cross-river bridge are bidirectional U-shaped turnaround ramps; the bidirectional U-shaped turnaround ramps include a third U-shaped turnaround ramp and a fourth U-shaped turnaround ramp; the ramps leading right from Binjiang Road to the cross-river tunnel are right-turn directional ramps, which merge with the main tunnel of the cross-river tunnel in the form of a tunnel; the ramps leading left from Binjiang Road to the cross-river bridge are fourth U-shaped turnaround ramps; the ramps leading left from Binjiang Road to the cross-river tunnel are left-turn directional ramps, which merge with the main tunnel of the cross-river tunnel in the form of a tunnel.

2. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 1, characterized in that: The standard riverside road (1) of the two-way main road includes an east-west road and a west-east road; the two one-way river-crossing bridges (2) include a north-south road and a north-south road; the two one-way tunnels include a north-south road and a north-south road; the two ramps from the river-crossing passage to the riverside road include ramp ③ from the north-south one-way tunnel to the west-east riverside road and ramp ⑦ from the north-south river-crossing bridge to the east-west riverside road; the α-type ramp includes ramp ③ and ramp ⑦; The two ramps from the cross-river passage to the riverside road include ramp ④, which allows left turns from the north-south one-way tunnel to the east-west riverside road, and ramp ⑧, which allows left turns from the north-south cross-river bridge to the west-east riverside road; the first U-shaped turnaround ramp includes ramp ④; the second U-shaped turnaround ramp includes ramp ⑧; the bidirectional U-shaped turnaround ramp includes ramp ⑤; the right-turn directional ramp includes ramp ①; the fourth U-shaped turnaround ramp includes ramp ②; and the left-turn directional ramp includes ramp ⑥.

3. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance of the α-type ramp ③ connects to the deceleration lane section of the north-south tunnel of the cross-river passage; the exit of the α-type ramp ③ connects to the acceleration lane section of the east-west riverside road; the α-type ramp ③ is provided with a first two-layer ring-shaped rotating 360° structure in the middle; the first two-layer ring-shaped rotating 360° structure of the α-type ramp ③ crosses the main line of the riverside road and ramp ⑥ twice; the first two-layer ring-shaped rotating 360° structure of the α-type ramp ③ is mainly used to absorb the elevation difference of one layer.

4. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance of the α-type ramp ⑦ connects to the deceleration lane section of the north-south cross-river bridge; the exit of the α-type ramp ⑦ connects to the acceleration lane section of the east-west riverside road; the α-type ramp ⑦ has a second two-layer ring-shaped rotating 360° structure in the middle; the second two-layer ring-shaped rotating 360° structure of the α-type ramp ⑦ crosses the main line of the riverside road and ramp ① twice; the second two-layer ring-shaped rotating 360° structure of the α-type ramp ⑦ is mainly used to absorb the first-level elevation difference.

5. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 3, characterized in that: The centerline of the first two-layer annular rotating 360° structure adopts a circular width with a turning radius of ≥40m; the starting end of the first two-layer annular rotating 360° structure is located one layer above the ending end.

6. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 4, characterized in that: The centerline of the second two-layer annular rotating 360° structure adopts a circular width with a turning radius of ≥40m; the starting end of the second two-layer annular rotating 360° structure is located one layer above the ending end.

7. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance section of ramp ④ is collinear with ramp ③; the section from the entrance of ramp ④ to the end of the first U-shaped turn-around entrance is collinear with ramp ③; the first U-shaped turn-around of ramp ④ is collinear with the eastern half of the first two-layer circular 360° rotating structure of ramp ③; the entrance and exit ends of the first U-shaped turn-around of ramp ④ are connected to the first two-layer circular 360° rotating structure of ramp ③; the exit of ramp ④ is connected to the acceleration lane section of the east-west riverside road.

8. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance section of ramp ⑧ is collinear with ramp ⑦; the section from the entrance of ramp ⑧ to the end of the second U-shaped turn is collinear with ramp ⑦; the second U-shaped turn of ramp ⑧ is collinear with the western half of the second two-layer circular 360° rotating structure of ramp ⑦; the entrance and exit ends of the second U-shaped turn of ramp ⑧ are connected to the second two-layer circular 360° rotating structure of ramp ⑦; the exit of ramp ⑧ is connected to the acceleration lane section of the west-east riverside road.

9. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance of ramp ⑤ connects to the deceleration lane section of the east-west riverside road; the exit of ramp ⑤ connects to the acceleration lane section of the north-south cross-river bridge; the third U-shaped turn of ramp ⑤ crosses over the main line of the riverside road; the southern end of the third U-shaped turn of ramp ⑤ connects to the southern end of the fourth U-shaped turn; the northern section of the fourth U-shaped turn of ramp ⑤ connects to the exit of ramp ⑤.

10. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance of ramp ① connects to the deceleration lane section of the west-east riverside road; the exit of ramp ① connects to the acceleration lane section of the north-south cross-river tunnel.

11. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance section of ramp ② is collinear with ramp ①; the exit section of ramp ② is collinear with ramp ⑤; the fourth U-shaped turn-around section of ramp ② is collinear with ramp ⑤; the section between the separation end of ramp ② and ramp ① and the merging end of ramp ② and ramp ⑤ passes under the riverside passage and through various ramps.

12. The interchange connecting a cross-river passage and a riverside road in a mountainous city as described in claim 2, characterized in that: The entrance section of ramp 6 is collinear with ramp 5; the exit section of ramp 6 is collinear with ramp 1; the section between the separation point of ramp 6 and ramp 5 and the merging point of ramp 6 and ramp 1 crosses the riverside road and passes under the riverside passage.

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