Construction method for non-reserved rail transit interface of operating subway station

Abstract

A construction method for a non-reserved rail transit interface of an operating subway station, comprising structural construction. The structural construction comprises demolition construction of an outer wall (1) of a station hall structure and structural conversion construction. The demolition construction of the outer wall of the station hall structure comprises mounting supports, chiseling out a beam slot (11), chiseling out column slots (12), and removing a portal area (5). Mounting of the supports comprises the arrangement of a first support frame and the arrangement of a second support frame. Both the first support frame and the second support frame are arranged in a station hall and abut against a floor slab at the top of the station hall. The beam slot is located directly above the portal area. The column slots are located on the two sides of the portal area in the transverse direction. The structural conversion construction comprises casting a cross beam (3) in the beam slot, casting columns (4) in the column slots, and casting an interface channel structure (7). The interface channel structure is arranged between the station hall structure and an existing underground facility structure. The construction method ensures the safety during construction in a subway station hall area and the integrity of the existing structure, and enhances the structural stability of an interface channel.

Description

Construction method of non-reserved rail transit interface of operating subway station TECHNICAL FIELD

[0001] The present application relates to the technical field of underground facility traffic interface construction, and particularly relates to a construction method of non-reserved rail transit interface of operating subway station. BACKGROUND

[0002] With the continuous expansion and optimization of urban rail transit network, the demand for traffic interface reconstruction and expansion at existing operating subway stations is increasing. The purpose of traffic structure reconstruction construction is to newly build a traffic interface between the subway station hall and the existing underground facilities (underground passageway, underground commercial street, etc. near the subway station hall, as shown in FIG. 1) to form an underground connecting passageway to meet the requirements of personnel passage or equipment transportation, and to improve convenience and economy.

[0003] However, the construction at the operating subway station must be carried out under the premise of ensuring the normal operation of the subway, which puts forward very high requirements for the construction technology and management. In particular, the structure construction and waterproof construction of the non-reserved rail transit interface are related to the quality, safety and long-term operation effect of the project.

[0004] The prior art construction can effectively utilize the resources of the existing subway, but the traffic interface construction often needs to be carried out near the existing underground facilities (underground passageway, underground commercial street, etc. near the subway station hall), and slight carelessness may affect the stability of the existing building structure and the operation safety.

[0005] In particular, the design of the traffic interface area door hole and the structure conversion construction are easy to cause damage to the existing subway station hall or the existing underground facility structure, and therefore how to realize the connection between the subway station hall and the existing underground facilities and ensure the stability of the structure is one of the technical problems to be solved at present. SUMMARY

[0006] The application provides a construction method for a non-reserved rail transit interface of an operating subway station. The method comprises structural construction, which comprises station hall structure outer wall demolition construction and structure conversion construction. The station hall structure outer wall demolition construction comprises erecting supports, chiseling beam slots, chiseling column slots and removing door hole areas. The erecting supports comprises setting first support frames and second support frames. The first support frames and the second support frames are arranged in the station hall structure and located on the front and side of the door hole area. The first support frames and the second support frames abut against the top floor of the station hall structure. The beam slots are arranged above the door hole area, and the column slots are arranged on the transverse sides of the door hole area. The structure conversion construction comprises pouring horizontal beams in the beam slots, pouring columns in the column slots and pouring an interface passage structure. The interface passage structure is arranged between the station hall structure and an existing underground facility structure.

[0007] By adopting the above technical scheme, the construction method can realize the construction of the traffic interface between the station hall and the existing underground facility structure under the premise of ensuring the normal operation of the subway station. The erection of the first support frames and the second support frames can effectively ensure the stability of the top floor of the station hall. The sequential chiseling of the beam slots and the column slots and the pouring sequence of the horizontal beams and the columns ensure the structural stability and safety during the construction. The pouring of the interface passage structure connects the station hall structure and the existing underground facility structure, thereby realizing the effective construction of the connecting passage.

[0008] Preferably, the beam slots comprise a first slot section within the support range of the first support frames and a second slot section within the support range of the second support frames. The chiseling of the beam slots comprises the chiseling of the first slot section and the chiseling of the second slot section. The column slots comprise a first section close to the beam slots and a second section below the first section. The chiseling of the column slots comprises the chiseling of the first section and the chiseling of the second section. The chiseling of the first slot section is performed first, then the chiseling of the first section, followed by the chiseling of the second slot section, and finally the chiseling of the second section.

[0009] By adopting the above technical scheme, the sectional chiseling of the beam slots and the column slots improves the safety during the construction and effectively ensures the stability of the existing structure. In addition, the first sections of the beam slots and the column slots can be connected to each other, thereby facilitating the integrated pouring of the horizontal beams and the columns.

[0010] Preferably, the column pouring includes pouring in the first section and pouring in the second section; after the first section of the beam groove and the column groove is excavated, the beam pouring and the pouring in the first section of the column groove are performed immediately; after the beam and the part of the column located in the first section reach the design strength, the second section is excavated and poured.

[0011] By using the above technical scheme, the construction method of pouring the upper part of the beam and the column first and then pouring the bottom of the column is adopted, so that the beam can stably support the structure above the door opening area, effectively guaranteeing the structural stability during construction, reducing the influence of construction on the existing structure, and improving the safety and reliability of construction. In addition, the top of the beam and the column are connected as a whole, which can effectively improve the integrity and stability of the structure, thereby facilitating the stability of the subway station hall structure.

[0012] Preferably, before the second section of the column groove is excavated, the part of the door opening area adjacent to the column groove is excavated first, and a steel top column is arranged in the part, the steel top column being used to support the beam.

[0013] By using the above technical scheme, the steel top column arranged below the beam is used to support the beam, effectively guaranteeing the stability of the structure and ensuring the safety and reliability of the beam during subsequent construction.

[0014] Preferably, the first support frame and the second support frame each have a movable frame, the steel top column is detachably connected with the movable frame, and the movable frame is used to drive the steel top column to move and support the steel top column; after the second section of the column groove is excavated, the steel top column is cut and placed in the second section, and then the production of a steel cage and the pouring of concrete are performed on the steel top column, thereby forming a steel reinforced concrete column and completing the construction of the column.

[0015] By using the above technical scheme, the steel top column can effectively guarantee the stable support of the beam during construction, and by cutting and replacing the steel top column and pouring it inside the column, the column forms a steel reinforced concrete column, further enhancing the overall performance of the column and facilitating the improvement of the stability, safety and reliability of the subway station hall structure.

[0016] Preferably, the structure construction further includes excavation of a station hall structure bottom plate, the excavation area being located below the column groove and being in communication with the column groove, the bottom of the column extending into the excavation area, and the interface passage structure having a passage bottom plate, one end of the passage bottom plate extending into the excavation area and being connected with the station hall structure bottom plate and the column, and the other end being connected with a bottom plate of an existing underground facility structure.

[0017] By adopting the technical scheme, the chiseling of the station hall structure bottom plate enables the column bottom to extend into the chiseling area, the one end of the channel bottom plate of the interface channel structure extends into the chiseling area and is connected with the station hall structure bottom plate and the column, and the other end is connected with the bottom plate of the existing underground facility structure, thereby ensuring the stable connection between the interface channel structure and the station hall structure and the existing underground facility structure and improving the stability and safety of the overall structure.

[0018] Preferably, the internal reinforcement of the station hall structure outer wall and the station hall structure bottom plate is anchored into the cross beam and the column.

[0019] By adopting the technical scheme, the internal reinforcement of the station hall structure outer wall and the station hall structure bottom plate is anchored into the cross beam and the column, the connection strength between the station hall structure and the newly-poured cross beam and column is effectively enhanced, and the overall stability and safety of the structure are improved.

[0020] Preferably, the non-reserved rail transit interface construction method of the operating subway station further comprises waterproof construction, and the waterproof construction comprises full-enclosed outer waterproof layer construction; the full-enclosed outer waterproof layer comprises a concrete cushion layer and a pre-laid waterproof roll, the concrete cushion layer is arranged around the side of the interface channel structure, and the pre-laid waterproof roll is arranged between the interface channel bottom plate and the concrete cushion layer.

[0021] By adopting the technical scheme, the full-enclosed outer waterproof layer can effectively prevent underground water from penetrating, improve the waterproof performance of the interface channel structure, and ensure the safety and long-term use effect of the structure. The pre-laid waterproof roll and the concrete cushion layer are combined to form a multiple waterproof barrier, further enhancing the waterproof effect.

[0022] Preferably, the waterproof construction further comprises structure waterproof grouting construction; a grouting pipe is arranged at the joint between the interface channel structure and the station hall structure, and waterproof mortar is injected into the joint through the grouting pipe to complete the structure waterproof grouting construction.

[0023] By adopting the technical scheme, the structure waterproof grouting construction can effectively improve the waterproof performance of the joint between the interface channel structure and the station hall structure, avoid water seepage, and improve the engineering quality.

[0024] Preferably, a water-stopping rubber block is arranged in the joint between the interface channel structure and the station hall structure and in the joint between the interface channel structure and the existing underground facility structure.

[0025] By adopting the technical scheme, the water-stopping rubber block can effectively prevent water from penetrating through the joint, improve the waterproof performance between the interface channel structure and the existing structure, and ensure the engineering quality and long-term operation effect.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The erection of the support structure on the side of the door opening area and abutting with the station hall top floor effectively ensures the stability and safety of the station hall structure during the process of breaking the outer wall and subsequent construction, and the construction method of pouring the upper end of the beam and column first and then pouring the bottom of the column enables the beam to stably support the structure above the door opening area, significantly reducing the risk of damage to the station hall structure during construction; 2. The construction method of sectional breaking of beam slots and column slots and sectional pouring of columns ensures the independence and controllability of each section of structure construction, reduces the impact on the existing structure, improves construction precision, and thus improves construction efficiency and quality; 3. By using the full-enclosed external waterproof layer and structural waterproof grouting construction method to waterproof the joints between the subway station hall, interface passage structure and existing underground facility structure, water seepage can be effectively avoided, thereby improving the engineering quality. BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is a structural schematic diagram of a subway station hall, existing underground facilities, and an underground connecting passage therebetween in the background art; FIG. 2 is a schematic diagram of structure construction steps S2-S3 in an embodiment of the present application; FIG. 3 is a schematic diagram of structure construction step S4 in an embodiment of the present application; FIG. 4 is a schematic diagram of structure construction step S5 in an embodiment of the present application; FIG. 5 is a schematic diagram of structure construction step S6 in an embodiment of the present application; FIG. 6 is a schematic diagram of structure construction step S7 in an embodiment of the present application; FIG. 7 is a schematic diagram of structure construction step S8 in an embodiment of the present application; FIG. 8 is a schematic diagram of structure construction step S9 in an embodiment of the present application; FIG. 9 is a partial enlarged schematic diagram of part A in FIG. 8, and is used to show the structure of the grouting guide pipe and waterproof rubber block.

[0028] Markings in the drawings: 1, station hall structure outer wall; 11, beam slot; 111, first slot section; 112, second slot section; 12, column slot; 121, first section; 122, second section; 2, station hall structure bottom plate; 3, beam; 4, column; 5, door opening area; 6, steel top column; 7, interface passage structure; 71, passage bottom plate; 72, main body part; 8, full-enclosed external waterproof layer; 81, concrete cushion layer; 82, pre-laid waterproof roll; 9, grouting guide pipe; 10, waterproof rubber block. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below in conjunction with FIGS. 1-9.

[0030] The embodiment of the present application provides a construction method for non-reserved rail transit interface of an operating subway station, which includes two steps of structure construction and waterproof construction, can effectively ensure the stability and safety of the station hall structure, existing underground facility structure, and interface passage structure 7 during the construction process, and has high construction quality.

[0031] The structural construction includes station hall structure outer wall 1 demolition and structural conversion construction. The station hall structure outer wall 1 demolition construction includes four steps of erecting support, beam slot 11 chiseling, column slot 12 chiseling and door opening area 5 removal.

[0032] Specifically, the erecting support includes the setting of the first support frame and the setting of the second support frame. In the erecting process, the first support frame and the second support frame are both arranged in the station hall and located at the right side of the door opening area 5 and abut against the top floor slab of the station hall structure. This structural design can effectively ensure the stability of the overall structure of the door opening area 5 and reduce the risk of structural instability in the construction process.

[0033] For example, the first support frame can be a hydraulic jack or a rigid beam type support frame, which is used to bear the load of the door opening area 5 and prevent the phenomenon of station hall top floor slab subsidence in the chiseling process of the beam slot 11 and the column slot 12. The second support frame can also adopt a hydraulic jack or a rigid beam type support frame, which is used to reinforce the structure on both sides of the door opening area 5 and prevent lateral displacement.

[0034] The beam slot 11 is arranged directly above the door opening area 5 and is used to install the cross beam 3. The cross beam 3 can be cast-in-place concrete with a later-added steel cage or can be a precast concrete beam. The column slot 12 is arranged on the transverse sides of the door opening and is used to install the column 4 and can also adopt cast-in-place concrete or precast.

[0035] Specifically, the beam slot 11 includes a first slot section 111 within the support range of the first support frame and a second slot section 112 within the support range of the second support frame. The column slot 12 includes a first section 121 close to the beam slot 11 and a second section 122 below the first section 121. The upper end of the first section 121 is connected to the end of the first slot section 111, and the second section 122 is connected to the first section 121.

[0036] The structural conversion construction includes the pouring of the cross beam 3 in the beam slot 11, the pouring of the column 4 in the column slot 12 and the pouring of the interface passage structure 7. Specifically, in the pouring of the cross beam 3 in the beam slot 11, prestressed concrete technology or conventional concrete pouring process can be adopted, and the corresponding construction scheme can be selected according to the actual demand. The column 4 pouring can also adopt prestressed concrete technology or conventional secondary pouring process. The pouring of the interface passage structure 7 needs to consider the stability of the underground environment at the interface and the construction convenience, and select appropriate materials and construction process.

[0037] The interface passage structure 7 is arranged between the station hall structure and the existing underground facility structure and serves as a personnel passage to connect the station hall structure and the existing underground facility structure.

[0038] In combination with the above construction process, the structural construction tool in the application has a construction step of: S1, erecting a support, the first support frame and the second support frame are arranged in the station hall and located at the side of the door opening area 5, the door opening area 5 is divided into two symmetrical sub-areas by the center line drawn in the width direction of the door opening area 5, and the first support frame and the second support frame are arranged in the two sub-areas respectively. And the first support frame and the second support frame can be in full contact with the station hall top floor through the hydraulic jack, so as to prevent the floor from sinking due to the removal of the beam groove 11 and the column groove 12.

[0039] S2, removing the beam groove 11, referring to FIG. 2, the beam groove 11 is arranged above the door opening area 5, and a multi-stage progressive construction can be adopted to gradually increase the depth of the beam groove 11, and finally form a beam groove 11 with the required size. Avoiding the destruction of the station hall structure caused by one-time removal. In specific implementation, the position of the beam groove 11 is first marked above the door opening area 5, and a light rock drill is used to gradually drill the beam groove 11.

[0040] S3, removing the first section 121 of the column groove 12. In specific construction, the first section 121 is the column groove 12 groove section within 1000mm range downward from the beam groove 11.

[0041] S4, referring to FIG. 3, the concrete pouring is carried out in the beam groove 11 and the first section 121 of the column groove 12 at the same time, so that the horizontal beam 3 and the column 4 located in the first section 121 form an integral whole. When arranging the horizontal beam 3 reinforcement cage in the beam groove 11, it is necessary to ensure that the reinforcement cage is fully connected with the internal reinforcement of the station hall structure outer wall 1, so as to ensure the integrity of the horizontal beam 3 and the station hall structure outer wall 1.

[0042] S5, referring to FIG. 4, after the part of the horizontal beam 3 and the column 4 located in the first section 121 reaches the design strength, the part of the door opening area 5 adjacent to the column 4 is removed, and after the removal is completed, a steel top column 6 is arranged in the removed area. The steel top column 6 is provided with two and corresponds to the first support frame and the second support frame respectively. The first support frame and the second support frame each include a main support for supporting the station hall structure top plate, and a moving frame arranged on the main support. The steel top column 6 is detachably connected with the moving frame, and the moving frame can move relative to the main support or be fixed relative to the main support, so as to be able to drive the steel top column 6 to move, and also be able to support the steel top column 6.

[0043] The steel top column 6 can move to below the horizontal beam 3 and support the horizontal beam 3, so as to ensure the stability of the horizontal beam 3.

[0044] S6, referring to FIG. 5, after the steel top column 6 is arranged, the second section 122 of the column groove 12 is removed. Under the action of the steel top column 6, the horizontal beam 3 can always have high stability.

[0045] It should be noted that after the second segment 122 is excavated, the concrete floor of the station hall structure should be excavated downwards.

[0046] S7, referring to FIG. 6, the pouring of the part of the column 4 located in the second segment 122 is performed. Similarly, when the column 4 reinforcement cage is arranged in the second segment 122 of the column slot 12, it is also necessary to ensure that the reinforcement cage is fully connected with the internal reinforcement of the station hall structure outer wall 1 and the reinforcement cage is fully connected with the station hall structure floor 2, so as to ensure the integrity of the column 4, the station hall structure outer wall 1 and the station hall structure floor 2.

[0047] Preferably, in step S7, the profile steel top column 6 can be cut to a length corresponding to the length of the second segment 122, and the profile steel top column 6 supports the part of the column 4 located in the first segment 121 to ensure the stability of the beam 3. Then the column 4 reinforcement cage is arranged outside the profile steel top column 6, and the profile steel top column 6 is poured inside the column 4 to form a reinforced concrete column to improve the performance of the column 4.

[0048] S8, referring to FIG. 7, the door opening is excavated.

[0049] S9, referring to FIG. 8, the interface passage structure 7 is constructed, specifically, the interface passage structure 7 includes a main body part 72 and a passage floor 71. The main body part 72 is an annular passage arranged between the station hall structure outer wall 1 and the outer wall of the existing underground facility, and forms a tunnel structure with the door opening area 5 on the station hall structure outer wall 1, thereby providing a passing space. The passage floor 71 is located at the bottom side of the main body part 72 and serves as a foundation support.

[0050] In the specific construction, the soil layer between the station hall structure and the existing underground facility needs to be excavated, and the pouring of the passage floor 71 is performed. One end of the passage floor 71 is connected with the station hall structure floor 2. Further, since the part of the station hall structure floor 2 located below the column slot 12 is excavated in step S7, the one end of the passage floor 71 needs to extend into the excavated area, so that the passage floor 71, the station hall structure floor 2 and the column 4 are integrated, and the other end of the passage floor 71 is directly connected with the floor of the existing underground facility structure.

[0051] After the construction of the passage floor 71 is completed, the main body part 72 is constructed. The main body part 72 can be constructed by cast-in-place, and after the pouring is completed, a joint is arranged on the main body part 72 to prevent shrinkage cracks. In addition, the main body part 72 can also be prefabricated, and then the main body part 72 is reliably connected with the station hall structure and the existing underground facility structure through a connecting piece.

[0052] In summary, through the above construction steps, a stable traffic interface passage can be formed, and the stability and safety of the existing structure during construction can be ensured.

[0053] Further, in order to avoid water seepage and other phenomena in the traffic interface passage, the waterproof construction includes the construction of the full-enclosed outer waterproof layer 8 and the structural waterproof grouting construction. The full-enclosed outer waterproof layer 8 used includes a concrete cushion layer 81 and a pre-laid waterproof roll 82. The concrete cushion layer 81 is arranged around the side of the interface passage structure 7, and the pre-laid waterproof roll 82 is arranged between the interface passage structure 7 and the concrete cushion layer 81.

[0054] Moreover, in order to ensure the effectiveness of the waterproof construction, each step of the waterproof construction needs to be interspersed in the steps of the structural construction.

[0055] The construction of the concrete cushion layer 81 should be in the step S9 of the structural construction, and after the soil layer is excavated and before the passage bottom plate 71 is constructed. Specifically, after the soil layer between the station hall structure and the existing underground facilities is excavated, the concrete cushion layer 81 is poured. The pouring of the concrete cushion layer 81 can use two-lining vault with mold grouting. It can also use simple wooden boards to be set up and concrete to be poured.

[0056] After the pouring of the concrete cushion layer 81 is completed, the pre-laid waterproof roll 82 is laid. In the material selection of the pre-laid waterproof roll 82, ternary ethylene-propylene rubber roll or polyurethane waterproof roll can be selected to ensure that there is no bubble and no wrinkle between the roll and the concrete cushion layer 81, so as to improve the waterproof effect. Then, the passage bottom plate 71 is constructed and the main body part 72 is constructed.

[0057] The structural waterproof grouting construction is arranged after the construction of the passage bottom plate 71 is completed. And the grouting pipe 9 needs to be pre-buried on the passage bottom plate 71.

[0058] Referring to FIG. 9, the outlet of the grouting pipe 9 is located at the joint between the passage bottom plate 71 and the station hall structure bottom plate 2, and the inlet is located on the outer surface of the passage bottom plate 71. The waterproof mortar is injected into the joint through the grouting pipe 9 to complete the waterproof construction.

[0059] Similarly, after the construction of the main body part 72 is completed, the structural waterproof grouting construction should also be used to waterproof the joint between the main body part 72 and the station hall structure outer wall 1.

[0060] In addition, waterproof blocks 10 can also be arranged at the joint between the main body part 72 and the station hall structure outer wall 1 and at the joint between the passage bottom plate 71 and the station hall structure bottom plate 2. The waterproof blocks 10 can be made of rubber and other materials to seal the joint and further improve the waterproof effect. The waterproof blocks 10 can also be arranged at the edge of the joint, and the outlet of the grouting pipe 9 is located on the inside of the joint, so that the waterproof blocks 10 can hold the waterproof mortar and avoid leakage of the waterproof mortar, meet the grouting pressure requirements of the waterproof mortar, and improve the grouting effect.

[0061] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for operating a non-reserved track transit interface construction of a subway station, characterized in that, The structure construction includes station hall structure outer wall (1) demolition construction, structure conversion construction; The station hall structure outer wall (1) demolition construction includes erecting support, beam slot (11) chiseling, column slot (12) chiseling and door hole area (5) removal; The erecting support includes first support frame setting and second support frame setting; the first support frame and the second support frame are both arranged in the station hall structure and located at the right side and the left side of the door hole area (5); the first support frame and the second support frame are both in abutment with the top floor of the station hall structure; The beam slot (11) is arranged above the door hole area (5), and the column slot (12) is arranged at the transverse sides of the door hole area (5); The structure conversion construction includes beam (3) pouring in the beam slot (11), column (4) pouring in the column slot (12) and interface passage structure (7) pouring; the interface passage structure (7) is arranged between the station hall structure and the existing underground facility structure.

2. The method of claim 1, wherein the method is characterized by, The beam slot (11) includes a first slot section (111) within the support range of the first support frame and a second slot section (112) within the support range of the second support frame; the chiseling of the beam slot (11) includes the chiseling of the first slot section (111) and the chiseling of the second slot section (112); The column slot (12) includes a first subsection (121) close to the beam slot (11) and a second subsection (122) below the first subsection (121); the chiseling of the column slot (12) includes the chiseling of the first subsection (121) and the chiseling of the second subsection (122); Firstly, the first slot section (111) is chiseled, then the first subsection (121) is chiseled, subsequently, the second slot section (112) is chiseled, and finally, the second subsection (122) is chiseled.

3. The method of claim 2, wherein the method further comprises: The column (4) pouring includes pouring in the first subsection (121) and pouring in the second subsection (122); after the chiseling of the beam slot (11) and the first subsection (121) of the column slot (12) is completed, the pouring of the beam (3) and the pouring in the first subsection (121) of the column slot (12) are immediately performed; after the beam (3) and the part of the column (4) located in the first subsection (121) reach the design strength, the chiseling of the second subsection (122) and the pouring of the second subsection (122) are performed.

4. The method of claim 3, wherein the method further comprises: Before the second subsection (122) of the column slot (12) is chiseled, the part of the door hole area (5) close to the column slot (12) is chiseled, and a profile steel top column is arranged in the part, the profile steel top column is used for jacking the beam (3).

5. The method of claim 4, wherein the method further comprises: The first support frame and the second support frame both have a moving frame, the profile steel top column (6) is detachably connected with the moving frame, and the moving frame is used for moving and supporting the profile steel top column (6); After the second section (122) of the column groove (12) is chiseled out, the steel column (6) is cut, and the cut steel column (6) is placed in the second section (122), and then the steel cage is made on the steel column (6) and the concrete is poured, thereby forming a steel reinforced concrete column and completing the construction of the column (4).

6. The method of claim 1, wherein the method is characterized by, The structure construction further includes chiseling of a station hall structure bottom plate (2), a chiseled area being located below and communicated with the column groove (12), the column (4) extending to the chiseled area, the interface passage structure (7) having a passage bottom plate (71), one end of the passage bottom plate (71) extending into the chiseled area and connected with the station hall structure bottom plate (2) and the column (4), and the other end connected with a bottom plate of an existing underground facility structure.

7. The method of claim 1, wherein the method is characterized by, The internal reinforcement of the station hall structure outer wall (1) and the station hall structure bottom plate (2) is anchored into the beam (3) and the column (4).

8. The method of claim 1, wherein the method is characterized by, The waterproof construction further includes structure waterproof grouting construction; a grouting guide pipe (9) is arranged at a joint between the interface passage structure (7) and the station hall structure, and waterproof mortar is injected into the joint through the grouting guide pipe (9), thereby completing the structure waterproof grouting construction.

9. The method of claim 8, wherein the method further comprises: The interface passage structure (7) and the station hall structure are provided with a waterproof glue block in the joint between the interface passage structure (7) and the station hall structure and in the joint between the interface passage structure (7) and the existing underground facility structure.

10. The method of claim 8, wherein the method further comprises: The interface passage structure (7) and the station hall structure are provided with a waterproof glue block in the joint between the interface passage structure (7) and the station hall structure and in the joint between the interface passage structure (7) and the existing underground facility structure.

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