Underground excavation station construction method for underneath passing tramcar by adopting pipe-roofing hole pile method

Abstract

The invention discloses an underground excavation station construction method for underneath passing a tramcar by adopting a pipe-roofing hole pile method, which comprises the following steps: S1, constructing fender posts along the edges of a first area and a second area, and then excavating the first area and the second area of a station; s2, pipe roof supporting piles and pipe roof supporting beams are constructed in the middle area; s3, a pipe curtain is constructed on the pipe curtain supporting beams, and the pipe curtain is horizontally arranged; and S4, excavation is conducted from the first area to the middle area, and after excavation is conducted by a set distance, excavation is conducted from the second area to the middle area till the middle area is communicated in the direction of the connecting line of the first area and the second area. The pipe roofing is driven into the lower portion of the operation track, then the pipe roofing supporting piles are driven into the lower portion of the pipe roofing, the pipe roofing supporting beams are matched with the pipe roofing supporting piles to support the pipe roofing, the possibility of settlement of the operation track area is reduced, the two sides of the operation track are excavated during excavation, the construction efficiency is improved, meanwhile, vibration is reduced, and the construction quality is improved. And the influence on a running track is further reduced.

Description

Technical Field

[0001] This application relates to the field of subway station construction technology, and in particular to a method for constructing a tunnel-type station using the pipe-jacking method to pass under a tram line. Background Technology

[0002] When constructing a subway station, it is necessary to excavate a foundation pit underground.

[0003] Unless there are other interfering structures or special circumstances, subway station foundation pits are generally excavated directly using the open-cut method. However, if there are interfering structures or other issues, adjustments may be necessary, such as using a cut-and-cover method.

[0004] In the prior art, referring to Figure 1 There is a section of running track 8 above the station 9 to be excavated, and the running track is in operation during the excavation process. However, conventional tunneling methods may cause soil settlement and affect the running track. Therefore, it is necessary to propose a station construction method that can reduce the impact on the running track based on this special situation. Summary of the Invention

[0005] The purpose of this application is to provide a method for constructing a tunnel station under a tram line using the pipe-jacking method, in order to improve the problem that existing construction methods pose significant safety hazards to the running track.

[0006] This application provides a method for constructing a tunnel station under a tram line using the pipe jacking method, which employs the following technical solution: A method for constructing a tunnel-type station under a tram line using the pipe-jacking method includes the following steps: S1. Construct retaining piles along the edges of the first and second zones, then excavate the first and second zones of the station; S2. Construct pipe jacking support piles and pipe jacking support beams in the intermediate zone. The pipe jacking support piles are set vertically, and both the pipe jacking support beams and pipe jacking support piles are located below the running track. S3. Construct the pipe jacking on the pipe jacking support beam, with the pipe jacking set horizontally; S4. Excavate from the first zone towards the middle zone. After excavating a set distance, excavate from the second zone towards the middle zone until the middle zone is connected along the line connecting the first and second zones.

[0007] By adopting the above technical solution, a pipe curtain is driven under the running track, and then pipe curtain support piles are driven under the pipe curtain. The pipe curtain is supported by pipe curtain support beams in conjunction with the pipe curtain support piles, thereby providing better support for the running track area and reducing the possibility of settlement in the running track area. During excavation, both sides of the running track are excavated simultaneously, improving construction efficiency and reducing vibration, thereby further reducing the impact on the running track.

[0008] Optionally, in step S4, when excavating from the first zone to the middle zone, first excavate an upper step of eight meters and a lower step of six meters. Then, construct steel pipe columns on the part that has already been excavated from the first zone to the middle zone. Then, excavate from the second zone to the middle zone until the middle zone is connected. Then, construct piles inside the tunnel on the part that has already been excavated from the second zone to the middle zone, and connect steel pipe columns on the piles inside the tunnel.

[0009] The above technical solution involves constructing steel pipe columns for support during excavation, reducing the possibility of collapse. In the middle zone, near the second zone, the tunnel piles are constructed first, followed by the steel pipe columns. This increases the stability of the steel pipe columns and further strengthens the soil layer below the middle zone, thereby reducing the possibility of settlement.

[0010] Optionally, a settlement jack is connected to the bottom of the steel pipe column, an I-beam is connected to the top of the steel pipe column, a displacement sensor is installed on the ground in the intermediate area, and the displacement sensor is electrically connected to the settlement jack.

[0011] The above technical solution uses displacement sensors to monitor the settlement of the soil layer below the intermediate zone. When settlement occurs, it is compensated by settlement jacks, thereby reducing the possibility that the settlement of the soil layer below the intermediate zone will affect the running track.

[0012] Optionally, in step S4, the height of the pilot tunnel during excavation is 7.5 meters and the width is 6 meters, so that the low-clearance rotary drilling rig can enter the pilot tunnel to construct the tunnel piles, and the bottom of the tunnel piles is 1 meter into the weathered soil.

[0013] The above technical solution allows for a pilot tunnel height of 7.5 meters and a width of 6 meters, facilitating the use of low-clearance rotary drilling rigs and improving the construction efficiency of the piles inside the tunnel.

[0014] Optionally, in step S4, during excavation, protective piles are constructed on both sides of the middle zone along the length of the running track. The protective piles include several bored piles and MJS piles arranged at intervals.

[0015] The above technical solution, through the combination of bored piles and MJS piles set at intervals, enhances the retaining capacity of the soil layer below the intermediate zone, thereby improving the stability of the coating below the intermediate zone.

[0016] Optionally, in step S4, the steel pipe column is transported to the intermediate area in a horizontal state, and then the steel pipe column is erected by the column erection device.

[0017] Optionally, the column assembly includes a frame, on which a moving component, a connecting component, and a column assembly are provided. The moving component is located on both sides of the frame. The connecting component is used to connect with the steel pipe column and enable the steel pipe column to rotate relative to the frame. The movable end of the column assembly is connected to the steel pipe column to drive the steel pipe column to rotate relative to the frame, thereby enabling the steel pipe column to switch from a horizontal state to a vertical state.

[0018] By adopting the above technical solution, the steel pipe column is connected to the connecting component, then the steel pipe column is erected by the column assembly, and finally the steel pipe column is moved to the set position by the moving component, thus realizing the erection of the steel pipe column in a narrow space.

[0019] Optionally, the connecting assembly includes a first jack, a hinge seat, a second jack, and a support plate. The first jack is connected to the vehicle frame, the hinge seat is connected to the movable end of the first jack, the hinge seat is connected to a settling jack via a hinge shaft, the settling jack is connected to a steel pipe column via a flange, the second jack is connected to the vehicle frame, and the support plate is connected to the movable end of the second jack. The support plate is used to support the settling jack after it is erected. Both the first jack and the second jack are arranged in a vertical direction.

[0020] Through the above technical solution, the settlement jack is hinged to the hinge seat, and the settlement jack and the steel pipe column can rotate around the hinge seat, which facilitates the erection of the steel pipe column. At the same time, after the steel pipe column is erected, the support plate can work with the hinge seat to support the steel pipe column and ensure its stability. The first jack and the second jack can not only be adjusted to match the settlement jack, but also lower the erected settlement jack to the ground. After lowering, the hinge shaft can be removed.

[0021] Optionally, the column assembly includes a winch, a bracket, a pulley, and a rope. The winch and the bracket are both mounted on the vehicle frame. The pulley is rotatably connected to the top of the bracket. One end of the rope is connected to the drum of the winch, and the other end passes over the pulley and is connected to the steel pipe column.

[0022] By adopting the above technical solution, the steel pipe column is pulled up by the winch winding the rope, so that the steel pipe column rotates around the hinge seat, and thus changes from a horizontal state to a vertical state.

[0023] Optionally, two fixing plates are fixedly connected to the bracket, each fixing plate has a clamp hinged to it, each clamp has a drive rod fixedly connected to it, and a third jack is also hinged to the fixing plate, with the movable end of the third jack hinged to the drive rod.

[0024] The above technical solution uses a third jack to drive the grippers to rotate, thereby enabling the two grippers to work together to clamp the steel pipe column, reducing the possibility of shaking during the movement of the frame and ensuring the stability of the steel pipe column when it is lowered to the ground.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By driving a pipe curtain under the running track, and then driving pipe curtain support piles under the pipe curtain, and supporting the pipe curtain with pipe curtain support beams in conjunction with the pipe curtain support piles, the running track area is better supported, reducing the possibility of settlement in the running track area. During excavation, both sides of the running track are excavated at the same time, improving construction efficiency and reducing vibration, thereby further reducing the impact on the running track. 2. During the excavation process, steel pipe columns are used for support to reduce the possibility of collapse. In the middle area, near the second zone, the piles inside the tunnel are constructed first, followed by the steel pipe columns. This increases the stability of the steel pipe columns and further strengthens the soil layer below the middle area, thereby reducing the possibility of settlement. 3. The settlement of the soil layer below the intermediate zone is monitored by displacement sensors. When settlement occurs, it is compensated by settlement jacks, thereby reducing the possibility that the settlement of the soil layer below the intermediate zone will affect the running track. 4. By using bored piles and MJS piles at intervals, the retaining capacity of the soil layer below the intermediate zone is improved, thereby enhancing the stability of the coating below the intermediate zone; 5. The steel pipe column is connected to the connecting component, then the steel pipe column is erected by the column assembly, and finally the steel pipe column is moved to the set position by the moving component, so as to realize the erection of the steel pipe column in a narrow space. 6. The settlement jack is hinged to the hinge seat, and the settlement jack and the steel pipe column can rotate around the hinge seat, which makes it easier to erect the steel pipe column. After the steel pipe column is erected, the support plate can work with the hinge seat to support the steel pipe column and ensure its stability. The first and second jacks can be adjusted to fit the settlement jack and can also be lowered to the ground. After lowering, the hinge shaft can be removed. 7. By using a winch to wind up the rope, the steel pipe column is pulled up, causing it to rotate around the hinge seat, thus changing from a horizontal to a vertical state. 8. The third jack drives the gripper to rotate, thereby enabling the two grippers to work together to clamp the steel pipe column, reducing the possibility of shaking during the movement of the frame and ensuring the stability of the steel pipe column during the process of lowering it to the ground. Attached Figure Description

[0026] Figure 1This is a schematic diagram illustrating the running track and the station to be excavated in the background technology.

[0027] Figure 2 This is a side sectional view of the pipe curtain and pipe curtain support piles in this invention.

[0028] Figure 3 This is a top view schematic diagram illustrating the pipe curtain support piles and retaining piles in this invention.

[0029] Figure 4 This is a side view schematic diagram illustrating the steel pipe support base in this invention.

[0030] Figure 5 This is a schematic diagram of the column device in this invention when the steel pipe column is not erected.

[0031] Figure 6 This is a schematic diagram illustrating the column erection device of the present invention when the steel pipe column is erected.

[0032] Figure 7 yes Figure 5 A magnified view of part A in the middle.

[0033] Figure 8 This is a schematic diagram illustrating the gripper in this invention.

[0034] In the diagram, 1. Zone 1; 2. Intermediate Zone; 3. Zone 2; 4. Pipe curtain; 41. Pipe curtain support pile; 42. Pipe curtain support beam; 5. Steel pipe column; 51. Settlement jack; 52. Pipe inside the tunnel; 6. Retaining pile; 61. Bored pile; 62. MJS pile; 7. Chassis; 71. Moving component; 72. Connecting component; 721. First jack; 722. Hinge seat; 723. Hinge shaft; 724. Second jack; 725. Support plate; 73. Erection component; 731. Winch; 732. Support; 733. Pulley; 734. Pull rope; 74. Fixing plate; 75. Clamp; 76. Third jack; 77. Drive rod; 8. Running track; 9. Station to be excavated. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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 the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] This application discloses a method for constructing a tunnel station under a tram line using the pipe-jacking method.

[0038] A method for constructing a tunnel-type station under a tram line using the pipe-jacking method, referring to... Figures 1 to 8 This includes the following steps: S1. Define the sections of the station that need to be excavated as Zone 1, Zone 3, and Intermediate Zone 2. Zone 2 is located below the running track 8, while Zone 1 and Zone 3 are located on either side of the running track 8. Construct retaining piles 6 along the edges of Zone 1 and Zone 3, and then excavate Zone 1 and Zone 3 of the station. Zone 1 and Zone 3 are open-cut excavations.

[0039] S2. Construct pipe curtain support piles 41 and pipe curtain support beams 42 in the intermediate zone 2. The pipe curtain support piles 41 are set in the vertical direction, and both the pipe curtain support beams 42 and the pipe curtain support piles 41 are located below the running track 8.

[0040] S3. Construct pipe curtain 4 above pipe curtain support beam 42, with pipe curtain 4 set horizontally.

[0041] S4. Excavate from Zone 1 to Zone 2. After excavating 8 meters, excavate from Zone 3 to Zone 2 until Zone 2 is connected along the line connecting Zone 1 and Zone 3.

[0042] Specifically, when excavating from Zone 1 to the intermediate zone 2, an upper step of eight meters and a lower step of six meters are excavated first. Then, steel pipe columns 5 are constructed on the already excavated section from Zone 1 to the intermediate zone 2. Excavation then continues from Zone 3 to the intermediate zone 2 until the intermediate zone 2 is fully penetrated. Subsequently, internal piles 52 are constructed on the already excavated section from Zone 3 to the intermediate zone 2, and steel pipe columns 5 are connected to these internal piles 52. The construction of steel pipe columns 5 during excavation provides support and reduces the possibility of collapse. Constructing the internal piles 52 first, followed by the steel pipe columns 5, at the end of the intermediate zone 2 closest to Zone 3 increases the stability of the steel pipe columns 5 and further strengthens the soil layer below the intermediate zone 2, thereby reducing the possibility of settlement.

[0043] More specifically, the bottom of the steel pipe column 5 is connected to a settlement jack 51, the top of the steel pipe column 5 is connected to an I-beam, and a displacement sensor is installed on the ground of the intermediate zone 2. The displacement sensor is electrically connected to the settlement jack 51.

[0044] The settlement of the soil layer below the intermediate zone 2 is monitored by displacement sensors. When settlement occurs, it is compensated by settlement jack 51, thereby reducing the possibility that the settlement of the soil layer below the intermediate zone 2 will affect the running track 8.

[0045] It should be noted that the pilot tunnel during excavation is 7.5 meters high and 6 meters wide to allow a low-clearance rotary drilling rig to enter the pilot tunnel for the construction of the tunnel piles 52. The bottom of the tunnel piles 52 is driven 1 meter into the weathered soil. The pilot tunnel is designed with a height of 7.5 meters and a width of 6 meters to facilitate the use of low-clearance rotary drilling rigs and improve the construction efficiency of the tunnel piles 52.

[0046] During excavation, protective piles are constructed on both sides of the intermediate zone 2 along the length of the running track 8. These protective piles consist of several spaced-apart bored piles 61 and MJS piles 62. The spaced-apart bored piles 61 and MJS piles 62 work together to enhance the retaining capacity of the soil layer below the intermediate zone 2, thereby improving the stability of the coating layer below the intermediate zone 2. The MJS piles 62 are interlocking piles. During construction, several bored piles 61 are first constructed, leaving gaps between adjacent bored piles 61. Then, concrete is filled between adjacent bored piles 61 to form interlocking piles. The protective piles and retaining piles 6 work together to form a complete retaining structure. The retaining piles 6 have the same structure as the protective piles, but the protective piles are larger in size.

[0047] The steel pipe column 5 is transported horizontally to the intermediate zone 2, and then erected by the column erection device.

[0048] Specifically, the column assembly includes a frame 7, on which a moving component 71, a connecting component 72, and a column assembly are mounted. The moving component 71 is located on both sides of the frame 7. The connecting component 72 is used to connect to the steel pipe column 5, allowing the steel pipe column 5 to rotate relative to the frame 7. The movable end of the column assembly is connected to the steel pipe column 5 to drive the steel pipe column 5 to rotate relative to the frame 7, thereby switching the steel pipe column 5 from a horizontal state to a vertical state. By connecting to the steel pipe column 5 through the connecting component 72, then erecting the steel pipe column 5 through the column assembly, and finally moving the steel pipe column 5 to a set position through the moving component 71, the steel pipe column 5 can be erected in a confined space. The moving component 71 can be a track.

[0049] The connecting assembly 72 includes a first jack 721, a hinge seat 722, a second jack 724, and a support plate 725. The first jack 721 is connected to the frame 7. The hinge seat 722 is connected to the movable end of the first jack 721. The hinge seat 722 is connected to the settling jack 51 through a hinge shaft 723. The settling jack 51 is connected to the steel pipe column 5 through a flange. The second jack 724 is connected to the frame 7. The support plate 725 is connected to the movable end of the second jack 724. The support plate 725 is used to support the settling jack 51 after it is erected. Both the first jack 721 and the second jack 724 are arranged in a vertical direction. The settlement jack 51 is hinged to the hinge seat 722, allowing the settlement jack 51 and the steel pipe column 5 to rotate around the hinge seat 722, thus facilitating the erection of the steel pipe column 5. After the steel pipe column 5 is erected, the support plate 725 can work with the hinge seat 722 to support the steel pipe column 5, ensuring its stability. The first jack 721 and the second jack 724 can be adjusted to fit the settlement jack 51, and can also lower the erected settlement jack 51 to the ground. After lowering, the hinge shaft 723 can be removed.

[0050] The column assembly includes a winch 731, a bracket 732, a pulley 733, and a rope 734. Both the winch 731 and the bracket 732 are mounted on the frame 7. The pulley 733 is rotatably connected to the top of the bracket 732. One end of the rope 734 is connected to the drum of the winch 731, and the other end passes over the pulley 733 and connects to the steel pipe column 5. By winding the rope 734 with the winch 731, the steel pipe column 5 is pulled up, causing it to rotate around the hinge seat 722, thus changing from a horizontal to a vertical position.

[0051] Two fixing plates 74 are fixedly connected to the bracket 732. Each fixing plate 74 has a clamp 75 hinged to it, and each clamp 75 has a drive rod 77 fixedly connected to it. A third jack 76 is also hinged to the fixing plate 74, and the movable end of the third jack 76 is hinged to the drive rod 77. The third jack 76 drives the clamp 75 to rotate, thereby causing the two clamps 75 to cooperate and clamp the steel pipe column 5, reducing the possibility of shaking during the movement of the frame 7 and ensuring the stability of the steel pipe column 5 during the lowering process to the ground.

[0052] It should be noted that one side of the frame 7 is penetrated along its own length so that after the steel pipe column 5 is lowered, the frame 7 can move to one side and separate from the steel pipe column 5.

[0053] When the steel pipe column 5 is transported to the intermediate zone 2, it is placed on the sleepers, 20 to 70 centimeters from the bottom. Then, the frame 7 is connected to the settlement jack 51, and the frame 7 is moved to a position below one end of the steel pipe column 5. At this point, the steel pipe column 5 and the settlement jack 51 are connected via flanges. Then, the end of the pull rope 734 away from the winch 731 is connected to the end of the steel pipe column 5 away from the settlement jack 51. The winch 731 is then started, pulling the steel pipe column 5 around the hinge seat 722 via the pull rope 734 until the settlement jack 51 abuts against the pallet 725. At this point, the third jack 76, in conjunction with the clamp 75, clamps the steel pipe column 5. The frame 7 then moves, moving the steel pipe column 5 to the set position. The first jack 721 and the second jack 724 then work together to lower the steel pipe column 5 to the ground. Finally, the hinge shaft 723 is disassembled.

[0054] Working principle: By driving a pipe curtain 4 under the running track 8, and then driving pipe curtain support piles 41 under the pipe curtain 4, and supporting the pipe curtain 4 with the pipe curtain support beam 42 in conjunction with the pipe curtain support piles 41, the running track 8 area is well supported, reducing the possibility of settlement in the running track 8 area. During excavation, both sides of the running track 8 are excavated at the same time, improving construction efficiency and reducing vibration, thereby further reducing the impact on the running track 8.

[0055] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method, characterized in that, Includes the following steps: S1. Construct retaining piles (6) along the edges of the first zone (1) and the second zone (3), and then excavate the first zone (1) and the second zone (3) of the station; S2. Construct pipe curtain support piles (41) and pipe curtain support beams (42) in the middle zone (2). The pipe curtain support piles (41) are set in the vertical direction, and the pipe curtain support beams (42) and pipe curtain support piles (41) are both located below the running track (8). S3. Construct the pipe curtain (4) on the pipe curtain support beam (42), with the pipe curtain (4) set horizontally; S4. Excavate from the first zone (1) to the middle zone (2). After excavating a set distance, excavate from the second zone (3) to the middle zone (2) until the middle zone (2) is connected along the line connecting the first zone (1) and the second zone (3).

2. The method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 1, characterized in that: In step S4, when excavating from the first zone (1) to the middle zone (2), first excavate the upper step of eight meters and the lower step of six meters. Then, construct steel pipe columns (5) in the part that has been excavated from the first zone (1) to the middle zone (2). Then, excavate from the second zone (3) to the middle zone (2) until the middle zone (2) is connected. Then, construct the tunnel piles (52) in the part that has been excavated from the second zone (3) to the middle zone (2), and connect the steel pipe columns (5) on the tunnel piles (52).

3. The method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 2, characterized in that: The bottom of the steel pipe column (5) is connected to a settlement jack (51), the top of the steel pipe column (5) is connected to an I-beam, and a displacement sensor is installed on the ground of the intermediate area (2). The displacement sensor is electrically connected to the settlement jack (51).

4. The method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 3, characterized in that: In step S4, the height of the pilot tunnel during excavation is 7.5 meters and the width is 6 meters, so that the low-clearance rotary drilling rig can enter the pilot tunnel to construct the tunnel pile (52), and the bottom of the tunnel pile (52) is weathered 1 meter into the middle.

5. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 4, characterized in that: In step S4, during excavation, protective piles are constructed on both sides of the middle zone (2) along the length of the running track (8). The protective piles include several bored piles (61) and MJS piles (62) arranged at intervals.

6. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 5, characterized in that: In step S4, the steel pipe column (5) is transported to the intermediate area (2) in a horizontal state, and then the steel pipe column (5) is erected by the column erection device.

7. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 6, characterized in that: The column assembly includes a frame (7), on which a moving component (71), a connecting component (72), and a column assembly are provided. The moving component (71) is located on both sides of the frame (7). The connecting component (72) is used to connect with the steel pipe column (5) and enable the steel pipe column (5) to rotate relative to the frame (7). The movable end of the column assembly is connected to the steel pipe column (5) to drive the steel pipe column (5) to rotate relative to the frame (7), thereby enabling the steel pipe column (5) to switch from a horizontal state to a vertical state.

8. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 7, characterized in that: The connecting assembly (72) includes a first jack (721), a hinge seat (722), a second jack (724), and a support plate (725). The first jack (721) is connected to the frame (7). The hinge seat (722) is connected to the movable end of the first jack (721). The hinge seat (722) is connected to the settling jack (51) via a hinge shaft (723). The settling jack (51) is connected to the steel pipe column (5) via a flange. The second jack (724) is connected to the frame (7). The support plate (725) is connected to the movable end of the second jack (724). The support plate (725) is used to support the settling jack (51) after it is erected. Both the first jack (721) and the second jack (724) are arranged in a vertical direction.

9. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 8, characterized in that: The column assembly includes a winch (731), a bracket (732), a pulley (733), and a rope (734). The winch (731) and the bracket (732) are both mounted on the frame (7). The pulley (733) is rotatably connected to the top of the bracket (732). One end of the rope (734) is connected to the drum of the winch (731), and the other end passes over the pulley (733) and is connected to the steel pipe column (5).

10. A method for constructing a tunnel-type station under a tram line using the pipe-jacking method according to claim 9, characterized in that: Two fixing plates (74) are fixedly connected to the bracket (732). Each fixing plate (74) has a gripper (75) hinged to it. Each gripper (75) has a drive rod (77) fixedly connected to it. A third jack (76) is also hinged to the fixing plate (74). The movable end of the third jack (76) is hinged to the drive rod (77).

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