T-shaped interchange subway station integrated with municipal tunnel

Abstract

A T-shaped transfer subway station built jointly with a municipal tunnel, which allows at least two subway lines to transfer. The T-shaped transfer subway station has a concourse level and a platform level of the first subway line corresponding to the first subway line. A municipal tunnel is arranged above the subway line at the uppermost level. A shared concourse for passage is formed between the bottom slab of the municipal tunnel and the bottom slab of the concourse level. The concourse level forms a connected concourse through the shared concourse. The present invention mainly optimizes the spatial layout of the combined construction mode of the T-shaped subway transfer station and the municipal tunnel, realizes the connection of the concourse level on the premise of less depressing the buried depth of the T-shaped transfer subway station, so that the concourse level forms a connected concourse structure, and solves the problem that in the prior art, the municipal tunnel runs through the transfer station and divides its concourse level, resulting in inconvenience for passengers to use and operation management. The present invention solves the disadvantages brought by the separated concourse at a lower cost.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit construction, and more specifically, to a T-shaped transfer subway station jointly constructed with a municipal tunnel. Background Art

[0002] Please refer to Figure 1 and Figure 2 wherein, Figure 1 is a schematic cross-sectional structure diagram along the direction perpendicular to the length direction of the municipal tunnel when the municipal tunnel and the transfer station are jointly constructed in the prior art; Figure 2 is a schematic cross-sectional structure diagram along the direction parallel to the length direction of the municipal tunnel when the municipal tunnel and the transfer station are jointly constructed in the prior art.

[0003] When a T-shaped transfer subway station is usually jointly constructed with a municipal tunnel 3′, a typical construction plan is as follows: Set two subway lines that make up the T-shaped transfer subway station, where one subway line is the first subway line 1′ and the other subway line is the second subway line 2′. The first subway line 1′ is directly below the middle of the municipal tunnel 3′. The first subway line 1′ and the municipal tunnel 3′ are of a common plate structure 5′, that is, the top plate of the first subway line 1′ is the bottom plate of the municipal tunnel 3′. The second subway line 2′ is located below the first subway line 1′, and the first subway line 1′ is located below the municipal tunnel 3′. The second subway line 2′ and the first subway line 1′ cross to form a T-shaped transfer structure.

[0004] The structural defects of the above construction plan are as follows: The first subway line 1′ is directly below the middle of the municipal tunnel 3′ (the middle of the municipal tunnel 3′ is the lowest point of the municipal tunnel 3′). The second subway line 2′ and the first subway line 1′ form a T-shaped transfer structure. A concourse level is set above the first subway line 1′ (the second subway line 2′ is located on the lower layer of the first subway line 1′). Since the first subway line 1′ and the municipal tunnel 3′ are in a common plate mode, the concourse level will be penetrated by the municipal tunnel 3′, and the concourse level will be divided into two independent concourses 4′ by the municipal tunnel 3′, which will cause inconvenience to passengers' use and operation management. Summary of the Invention

[0005] In summary, how to solve the problem of inconvenience to passengers' use and operation management caused by the municipal tunnel penetrating the transfer station and dividing its concourse level in the prior art has become an urgent problem to be solved by those skilled in the art.

[0006] To solve the problems of the prior art, the present invention provides the following technical solutions:

[0007] The present invention provides a T-shaped transfer subway station built in conjunction with a municipal tunnel. The T-shaped transfer subway station is located below the municipal tunnel, and the municipal tunnel has a lowest point of the tunnel. Among them, the T-shaped transfer subway station allows at least two subway lines to transfer. The two subway lines are the first subway line and the second subway line respectively. At the location of the T-shaped transfer subway station, the first subway line is located above the second subway line; the T-shaped transfer subway station has a concourse level and a first subway line platform level corresponding to the first subway line, and the concourse level is located above the first subway line platform level; the T-shaped transfer subway station is offset toward the side away from the lowest point of the tunnel relative to the lowest point of the tunnel and the concourse of the concourse level is connected.

[0008] Preferably, in the T-shaped transfer subway station built in conjunction with a municipal tunnel provided by the present invention, the part of the concourse level located directly below the municipal tunnel is a shared concourse for realizing the connection of the concourse level; the T-shaped transfer subway station has a second subway line platform level corresponding to the second subway line, and the shared concourse is connected to the second subway line platform level through a direct staircase.

[0009] Preferably, in the T-shaped transfer subway station built in conjunction with a municipal tunnel provided by the present invention, the municipal tunnel has a ship trough section, and in the vertical direction, the shared concourse is located below the ship trough section.

[0010] Preferably, in the T-shaped transfer subway station built in conjunction with a municipal tunnel provided by the present invention, the T-shaped transfer subway station sinks as a whole, and the sinking of the T-shaped transfer subway station forms the shared concourse between the bottom plate of the municipal tunnel and the bottom plate of the concourse level.

[0011] Preferably, in the T-shaped transfer subway station built in conjunction with a municipal tunnel provided by the present invention, a road intersection forms an intersection, and the intersection has an intersection center line intersection point; in the vertical direction, the lowest point of the municipal tunnel is offset relative to the intersection center line intersection point.

[0012] Preferably, in the T-shaped transfer subway station built in conjunction with a municipal tunnel provided by the present invention, in the vertical direction, the T-shaped transfer subway station is offset relative to the intersection center line intersection point, and the offset direction of the T-shaped transfer subway station is opposite to the offset direction of the lowest point of the municipal tunnel.

[0013] Preferably, in the T-shaped transfer subway station built in conjunction with a municipal tunnel provided by the present invention, the net height of the shared concourse is not less than 2.4 m.

[0014] Preferably, in the T-shaped transfer subway station built jointly with the municipal tunnel provided by the present invention, the length direction of the first subway line is perpendicular to the length direction of the municipal tunnel; the length direction of the second subway line is parallel to the length direction of the municipal tunnel, and the first subway line is arranged on the side away from the lowest point of the tunnel.

[0015] Preferably, in the T-shaped transfer subway station built jointly with the municipal tunnel provided by the present invention, the center line of the second subway line and the center line of the municipal tunnel are located in the same vertical plane.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention provides a T-shaped transfer subway station built jointly with the municipal tunnel. This T-shaped transfer subway station can be used for the transfer of at least two subway lines. The two subway lines are the first subway line and the second subway line respectively, and the first subway line is located above the second subway line. The T-shaped transfer subway station has a concourse level and a first subway line platform level corresponding to the first subway line. The concourse level is located above the first subway line platform level. A municipal tunnel is arranged above the upper layer of the subway line (the first subway line) located at the topmost layer. Among them, through structural design, a shared concourse for passage is formed between the bottom slab of the municipal tunnel and the bottom slab of the concourse level, and the concourse level forms a connected concourse through the shared concourse.

[0018] The present invention mainly optimizes the spatial layout of the combined construction mode of the T-shaped subway transfer station and the municipal tunnel, realizes the connection of the concourse level on the premise of reducing the buried depth of the T-shaped transfer subway station as little as possible, so that the concourse level forms a connected concourse structure, solves the problem that the municipal tunnel runs through the transfer station and divides its concourse level in the prior art, resulting in inconvenience for passengers to use and operation management, and the present invention solves the disadvantages brought by the separated concourse with a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The schematic diagrams in the specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0020] Figure 1 It is a schematic cross-sectional structure diagram along the direction perpendicular to the length direction of the municipal tunnel when the municipal tunnel and the transfer station are built jointly in the prior art;

[0021] Figure 2 It is a schematic cross-sectional structure diagram along the direction parallel to the length direction of the municipal tunnel when the municipal tunnel and the transfer station are built jointly in the prior art.

[0022] In Figure 1 and Figure 2In it, the corresponding relationship between the component names and the reference numerals is as follows:

[0023] The first subway line 1′, the second subway line 2′, the municipal tunnel 3′, the concourse 4′, the common plate structure 5′.

[0024] Figure 3 It is the general layout plan when the municipal tunnel and the T-shaped transfer subway station are jointly constructed in the embodiment of the present invention;

[0025] Figure 4 It is the schematic cross-sectional structure diagram along the direction perpendicular to the length direction of the municipal tunnel when the municipal tunnel and the T-shaped transfer subway station are jointly constructed in the embodiment of the present invention;

[0026] Figure 5 It is the schematic cross-sectional structure diagram along the direction parallel to the length direction of the municipal tunnel when the municipal tunnel and the T-shaped transfer subway station are jointly constructed in the embodiment of the present invention.

[0027] In Figures 3 to 5 the corresponding relationship between the component names and the reference numerals is as follows:

[0028] The first subway line 1, the T-shaped transfer subway station 2, the concourse level 3, the municipal tunnel 4, the shared concourse 5, the road 6, the second subway line 7, the platform level of the first subway line 8, the platform level of the second subway line 9, the direct staircase 10, the transfer staircase 11;

[0029] The lowest point a of the tunnel, as Figure 5 shown.

[0030] In Figure 3 the dashed part indicated by the reference numeral 2 is the T-shaped transfer subway station. Detailed implementation manners

[0031] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. Each example is provided by way of explanation of the present invention rather than a limitation of the present invention. In fact, those skilled in the art will clearly understand that modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present invention includes such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0032] In the description of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and does not require the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "connected" and "coupled" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Please refer to Figures 3 to 5 , wherein, Figure 3 is the general layout plan when the municipal tunnel and the T-shaped interchange subway station are jointly constructed in the embodiment of the present invention; Figure 4 is the schematic cross-sectional structure diagram along the direction perpendicular to the length direction of the municipal tunnel when the municipal tunnel and the T-shaped interchange subway station are jointly constructed in the embodiment of the present invention; Figure 5 is the schematic cross-sectional structure diagram along the direction parallel to the length direction of the municipal tunnel when the municipal tunnel and the T-shaped interchange subway station are jointly constructed in the embodiment of the present invention.

[0034] The present invention provides a T-shaped interchange subway station jointly constructed with a municipal tunnel. The T-shaped interchange subway station is located below the municipal tunnel. Generally, there is also a road above the municipal tunnel.

[0035] For a municipal tunnel, a municipal tunnel entrance and a municipal tunnel exit are provided on the ground surface. After entering the municipal tunnel from the municipal tunnel entrance, first pass through a downhill section and then the municipal tunnel 4 tends to be flat, and then pass through an uphill section and then drive out of the municipal tunnel 4 from the municipal tunnel exit. Among them, the downhill section and the uphill section are the trough sections of the municipal tunnel 4. For a municipal tunnel, after passing through the trough section of the municipal tunnel 4, the municipal tunnel will have a tunnel lowest point a.

[0036] In the present invention, the T-shaped interchange subway station can realize the interchange of at least two subway lines. The above "interchange" specifically means that it is possible to transfer from one subway line to another subway line through the interchange subway station. Specifically, the T-shaped interchange subway station 2 can realize the interchange between the first subway line 1 and the second subway line 7. The length direction of the first subway line 1 is perpendicular to the length direction of the municipal tunnel 4, and the length direction of the second subway line 7 is parallel to the length direction of the municipal tunnel 4. The first subway line 1 is arranged on the side far from the tunnel lowest point a.

[0037] For ease of description, the two subway lines transferred through the T-shaped transfer subway station 2 are the first subway line 1 and the second subway line 7 respectively. At the location of the T-shaped transfer subway station 2, the first subway line 1 is located above the second subway line 7. The T-shaped transfer subway station 2 has a concourse level 3 and a first subway line platform level 8 corresponding to the first subway line 1. The concourse level 3 is located above the first subway line platform level 8. A direct staircase 10 is provided from the concourse level 3. Through the direct staircase 10, one can directly access the first subway line platform level 8 and the second subway line platform level 9. In addition, a transfer staircase 11 is provided on the first subway line platform level 8 to realize the transfer between the first subway line platform level 8 and the second subway line platform level 9.

[0038] In the present invention, inside the T-shaped transfer subway station 2, the first subway line platform level 8 is arranged below the concourse level 3, and the second subway line platform level 9 corresponding to the second subway line 7 is arranged below the first subway line platform level 8. If there are multiple subway lines for transfer, then a third subway line platform level will be arranged below the second subway line platform level 9...

[0039] If two subway lines are set, the two subway lines (the first subway line 1 and the second subway line 7) intersect and form a T-shaped transfer structure with the T-shaped transfer subway station 2. If more than two subway lines are set, the design of the transfer structure will be carried out according to the actual terrain and the subway line alignment.

[0040] Above the first subway line platform level 8, a concourse level 3 and a municipal tunnel 4 are arranged. In the prior art, the municipal tunnel runs through the concourse level, making the concourse level discontinuous, and the concourse level is divided into two independent concourses, which will cause inconvenience to passengers' use and operation management. To solve this problem, the present invention proposes the following improvement concept: The T-shaped transfer subway station is offset towards the side away from the lowest point a of the tunnel with respect to the lowest point a of the tunnel, so that the concourse of the concourse level is connected, that is, since the first subway line 1 is arranged on the side away from the lowest point a of the tunnel, the T-shaped transfer subway station can be arranged on the side away from the lowest point of the tunnel. Specifically: The distance between the municipal tunnel 4 and the uppermost subway line is increased, so that the space between the bottom plate of the municipal tunnel 4 and the bottom plate of the concourse level 3 forms a shared concourse 5, thereby connecting the two independent concourses in the prior art, and making the concourse level 3 form a connected concourse through the shared concourse 5.

[0041] After the above structural improvement, the municipal tunnel 4 and the concourse level 3 form a common plate structure, that is, in the concourse level 3, the top plate part corresponding to the shared concourse 5 and the bottom plate part of the municipal tunnel 4 are of the same plate.

[0042] Regarding how to form a shared concourse 5 between the floor slab of the municipal tunnel 4 and the floor slab of the concourse level 3, the present invention proposes the following three solutions:

[0043] The first

[0044] In the vertical direction, the shared concourse 5 is offset relative to the lowest point of the municipal tunnel 4, so that there is a stagger between the lowest point of the municipal tunnel 4 and the lowest point of the shared concourse 5, thereby forming the shared concourse 5 between the floor slab of the municipal tunnel 4 and the floor slab of the concourse level 3.

[0045] By integrally shifting the T-shaped transfer subway station, the present invention can arrange the shared concourse 5 below the trough section of the municipal tunnel 4. Since the trough section of the municipal tunnel 4 is a sloped structure, the corresponding floor slab of the trough section is a raised structure relative to the T-shaped transfer subway station 2. Therefore, after the floor slab of the municipal tunnel 4 and the top slab of the concourse level 3 form a common slab structure, the slab of the common slab structure gradually rises as the municipal tunnel 4 climbs (due to the structural characteristics of the trough section), and thus the net height of the concourse level 3 also gradually increases.

[0046] In the first solution, relative to the urban layout around the T-shaped transfer subway station (including the T-shaped transfer subway station), it is equivalent to shifting the trough section of the municipal tunnel 4, or understood as the entire municipal tunnel 4, so that there is a stagger between the lowest point of the municipal tunnel 4 and the lowest point of the concourse level 3 of the transfer station.

[0047] In an embodiment of the present invention, during the co-construction project of the municipal tunnel 4 and the T-shaped transfer subway station, the municipal tunnel 4 is offset in the positive direction along its length, and the T-shaped transfer subway station 2 is offset in the reverse direction, so as to form a shared concourse between the floor slab of the lowest point a of the municipal tunnel and the floor slab of the concourse level 3 of the T-shaped transfer subway station. Through the shared concourse, the concourse level forms a connected concourse. The above positive offset and reverse offset do not have specific directions, and they only indicate that the offset direction of the municipal tunnel 4 is opposite to the offset direction of the T-shaped transfer subway station.

[0048] Generally, the subway line is built along the urban main road, that is, it is arranged below the urban main road. Then, corresponding to the T-shaped transfer subway station 2, the roads 6 set on the ground surface will intersect to form an intersection. The intersection has an intersection center line intersection point. Based on the intersection center line intersection point, in the vertical direction, the lowest point of the municipal tunnel 4 is offset relative to the intersection center line intersection point. In addition, the present invention also offsets the T-shaped transfer subway station 2 relative to the intersection center line intersection point, and the offset direction of the T-shaped transfer subway station 2 is opposite to the offset direction of the lowest point of the municipal tunnel 4.

[0049] In another embodiment of the present invention, namely the second technical solution. Specifically, in the co - construction project of the municipal tunnel 4 and the T - shaped transfer subway station, the burial depth of the T - shaped transfer subway station 2 is increased, so that a shared concourse 5 is formed between the bottom slab of the lowest point of the municipal tunnel 4 and the bottom slab of the concourse level of the T - shaped transfer subway station 2. Through the shared concourse, the concourse level forms a connected concourse.

[0050] The T - shaped transfer subway station 2 sinks as a whole. Due to the sinking of the T - shaped transfer subway station 2, a shared concourse 5 is formed between the bottom slab of the municipal tunnel 4 and the bottom slab of the concourse level 3. For the second solution, after the T - shaped transfer subway station 2 sinks as a whole, a shared concourse 5 is formed between the bottom slab of the concourse level 3 and the bottom slab of the municipal tunnel 4.

[0051] In yet another embodiment of the present invention, namely the third technical solution. The third solution is implemented based on the above - mentioned second solution, that is, after the T - shaped transfer subway station 2 sinks as a whole, the structure of the municipal tunnel 4 is optimized together, so that the municipal tunnel 4 is offset by a certain extent. In this way, both the overall sinking amplitude of the T - shaped transfer subway station 2 and the offset amplitude of the municipal tunnel 4 are small, and a shared concourse 5 can also be formed between the bottom slab of the concourse level 3 and the bottom slab of the municipal tunnel 4.

[0052] Specifically, the net height of the shared concourse 5 is not less than 2.4 m.

[0053] In an embodiment of the present invention, there are two subway lines, namely the first subway line 1 and the second subway line 7. The first subway line 1 and the second subway line 7 cross and form a T - shaped transfer structure with the T - shaped transfer subway station 2. In the vertical direction, the two subway lines are arranged one above the other. The subway line located in the lower layer (i.e., the second subway line 7) is parallel to the municipal tunnel 4, and the subway line located in the upper layer (i.e., the first subway line 1) is perpendicular to the municipal tunnel 4.

[0054] Furthermore, the center line of the second subway line 7 is located in the same vertical plane as the center line of the municipal tunnel 4.

[0055] The present invention also provides a construction method for a T - shaped transfer subway station co - constructed with a municipal tunnel. Specifically, the construction method for the T - shaped transfer subway station co - constructed with the municipal tunnel is as follows: In the co - construction project of the municipal tunnel 4 and the T - shaped transfer subway station, the municipal tunnel 4 is offset along its length direction, so that a shared concourse 5 is formed between the lowest point of the municipal tunnel 4 and the bottom slab of the concourse level 3 of the T - shaped transfer subway station. Through the shared concourse 5, the concourse level 3 forms a connected concourse.

[0056] The present invention also provides another construction method for a T-shaped transfer subway station built in conjunction with a municipal tunnel. Specifically, the construction method for the T-shaped transfer subway station built in conjunction with the municipal tunnel is as follows: During the construction of the combined project of the municipal tunnel 4 and the T-shaped transfer subway station, the designed height of the T-shaped transfer subway station is lowered, so that a shared concourse 5 is formed between the lowest point of the municipal tunnel 4 and the floor slab of the concourse level 3 of the T-shaped transfer subway station. Through the shared concourse 5, the concourse level 3 forms a connected concourse.

[0057] In order to connect the concourses (existing technical structures) separated by the municipal tunnel 4, the position of the lowest point of the municipal tunnel 4 can be optimized so that the lowest point of the municipal tunnel 4 avoids the midpoint intersection of the intersection of the road 6 and is moved to one side of the road 6. The T-shaped transfer subway station is arranged below the trough section of the municipal tunnel 4. At the same time, the buried depth of the T-shaped transfer subway station 2 can be appropriately reduced to ensure that the minimum clear height of the concourse level 3 reaches 2.4 m. Since the slab (the common slab between the municipal tunnel 4 and the concourse level 3) gradually rises with the rise of the municipal tunnel 4, the floor height of the concourse level 3 also gradually increases.

[0058] The specific construction steps of the present invention are as follows:

[0059] The first step: Enclose the site, level the site, construct the retaining structure, lay the dewatering wells and dewater according to the design requirements.

[0060] The second step: Excavate the foundation pit for the first time to the bottom of the capping beam, and pour the capping beam and the first support.

[0061] The third step: After the concrete supports (capping beam and the first support) reach the design strength, continue to excavate the soil mass, and successively install each support to the bottom of the foundation pit during the excavation process.

[0062] The fourth step: After excavating to the base, construct the concrete cushion, waterproof layer and concrete protective layer.

[0063] The fifth step: Apply the waterproof layer for the floor slab and part of the side walls, and pour the structural floor slab and the lower part of the side walls under the support.

[0064] The sixth step: Remove the supports successively, construct the middle slab, side walls and the waterproof layer for the side walls, roof slab. After the roof slab concrete reaches the design strength, lay the waterproof layer for the roof slab and construct the coping beam.

[0065] The seventh step: Restore the pipelines, backfill the soil to the bottom of the first concrete support and then remove the first concrete support. Fill the soil to the road surface elevation, remove the enclosure and harden the road surface, and restore the road traffic.

[0066] The eighth step: Construct the internal structure of the station, such as the track bed, the side walls under the platform, the platform slab, the track roof air duct, etc.

[0067] The present invention mainly optimizes the spatial layout of the combined construction mode of a T-shaped subway transfer station and a municipal tunnel, realizing the connection of the concourse level 3 on the premise of reducing the buried depth of the T-shaped transfer subway station 2 less, so that the concourse level 3 forms a connected concourse structure, solving the problem that the municipal tunnel runs through the transfer station in the prior art and divides its concourse level, resulting in inconvenience for passengers to use and operation management. The present invention solves the disadvantages brought by the separated concourse with a relatively low cost.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A T-shaped transfer subway station built jointly with a municipal tunnel, the T-shaped transfer subway station being located below the municipal tunnel, the municipal tunnel having a lowest point of the tunnel, characterized in that, The T-shaped interchange subway station allows at least two subway lines to interchange. The two subway lines are the first subway line and the second subway line respectively. At the location of the T-shaped interchange subway station, the first subway line is above the second subway line; The T-shaped interchange subway station has a concourse level and a first subway line platform level corresponding to the first subway line. The concourse level is above the first subway line platform level; The length direction of the first subway line is perpendicular to the length direction of the municipal tunnel; The length direction of the second subway line is parallel to the length direction of the municipal tunnel. The first subway line is arranged on the side away from the lowest point of the tunnel. The T-shaped interchange subway station is offset towards the side away from the lowest point of the tunnel relative to the lowest point of the tunnel, and the concourse of the concourse level is connected; The space between the bottom slab of the municipal tunnel and the bottom slab of the concourse level forms a shared concourse, and the concourse level forms a connected concourse through the shared concourse; The municipal tunnel has a ship trough section. Vertically, the shared concourse is arranged below the ship trough section of the municipal tunnel; The lowest point of the municipal tunnel and the lowest point of the concourse level of the transfer station are staggered; 2. The T-shaped interchange subway station built jointly with the municipal tunnel according to claim 1, characterized in that, The part of the concourse level directly below the municipal tunnel is the shared concourse for realizing the connection of the concourse level; The T-shaped interchange subway station has a second subway line platform level corresponding to the second subway line. The shared concourse is connected to the second subway line platform level by a direct staircase; 3. The T-shaped interchange subway station built jointly with the municipal tunnel according to claim 2, characterized in that, The whole of the T-shaped interchange subway station sinks, and the shared concourse is formed between the bottom slab of the municipal tunnel and the bottom slab of the concourse level due to the sinking of the T-shaped interchange subway station; 4. The T-shaped interchange subway station built jointly with the municipal tunnel according to claim 1, characterized in that, The roads intersect to form an intersection, and the intersection has an intersection center line intersection point; Vertically, the lowest point of the municipal tunnel is offset relative to the intersection center line intersection point; 5. The T-shaped interchange subway station built jointly with the municipal tunnel according to claim 4, characterized in that, Vertically, the T-shaped interchange subway station is offset relative to the intersection center line intersection point, and the offset direction of the T-shaped interchange subway station is opposite to the offset direction of the lowest point of the municipal tunnel; 6. The T-shaped interchange subway station built jointly with the municipal tunnel according to claim 2, characterized in that, The net height of the shared concourse is not less than 2.4m; 7. The T-shaped interchange subway station built jointly with the municipal tunnel according to claim 1, characterized in that, The center line of the second subway line and the center line of the municipal tunnel are in the same vertical plane.

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