Steel sheet pile supporting device and method for long-section prefabricated comprehensive pipe gallery

Abstract

The invention belongs to the technical field of pipe gallery construction, and particularly relates to a steel sheet pile supporting device and method for a long-section prefabricated comprehensive pipe gallery. The steel sheet pile supporting device comprises a steel sheet pile, a limiting mechanism is installed on the surface of one side of the steel sheet pile and comprises a steel waist plate, and a sliding groove is formed in the outer surface of one side of the steel waist plate; the inner wall of the sliding groove is rotationally connected with a gear through a rotating shaft. A supporting mechanism is installed on the surface of the steel waist plate and comprises a supporting plate, and the supporting plate is in a [shape. According to the steel sheet pile supporting device and method for the long-section prefabricated comprehensive pipe gallery, the supporting mechanism is arranged to be movably installed on the surfaces of the steel sheet piles, the steel sheet piles and the steel waist plates on the surfaces of the steel sheet piles are reinforced through the supporting plates, meanwhile, the supporting plates slide among the multiple aligned steel waist plates, the construction difficulty is lower compared with hoisting, and the construction efficiency is improved. And the construction engineering is simpler, more convenient and quicker, so that the construction efficiency is improved, and use is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe gallery construction, and in particular to a steel sheet pile supporting device and method for a long-segment prefabricated integrated pipe gallery. Background Art

[0002] In the construction of long-segment prefabricated integrated pipe corridors, ensuring the stability of the foundation pit and reducing the impact of excavation on the surrounding environment have become the key and difficult aspects of the construction. Currently commonly used support methods such as soil nail walls, underground continuous walls, or reinforced concrete retaining walls have problems such as long construction periods, high costs, and complex use of machinery and equipment.

[0003] Most of the existing support devices are supported by steel sheet piles, and then pillars are hoisted between two relative steel sheet piles. The steel sheet piles are supported tightly by the extension of the pillars. Due to the large scale of the pillars, the pillars need to be hoisted frequently as the project progresses. Not only is the construction difficult, but the frequent operation of large machinery such as hoisting equipment near the foundation pit can easily cause damage to the foundation pit, affecting the support work, making it inconvenient to use. Summary of the Invention

[0004] Based on the technical problem that the existing support device of the long-segment prefabricated integrated pipeline corridor needs to be frequently hoisted, the present invention proposes a steel sheet pile support device and method for the long-segment prefabricated integrated pipeline corridor.

[0005] The present invention proposes a steel sheet pile support device for a long-segment prefabricated integrated pipe gallery, comprising a steel sheet pile, a limiting mechanism installed on one side surface of the steel sheet pile, the limiting mechanism comprising a steel waist plate, a sliding groove formed on one side outer surface of the steel waist plate, and an inner wall of the sliding groove being rotatably connected to a gear via a rotating shaft;

[0006] A support mechanism is installed on the surface of the steel waist plate, and the support mechanism includes a support plate, which is in the shape of a Chinese character "匚", and a card groove is opened on the inner top wall surface and the inner bottom wall surface of the support plate, and the card groove is wavy. The outer surface of the support plate is slidably connected to the inner wall of the steel waist plate through the inner wall of the slide groove, and a guide wheel can be installed on the outer surface of the support plate or the inner wall of the slide groove on the surface of the steel waist plate to facilitate the movement of the support plate;

[0007] A power mechanism is installed between two adjacent support plates, and the power mechanism includes a dual-axis drive motor. The outer surface of the dual-axis drive motor is fixedly sleeved with a support tube, and the outer surfaces of the two adjacent support tubes are fixedly connected with a reinforcing rod. The dual-axis drive motor can also be used in conjunction with an electromagnetic brake to prevent the dual-axis drive motor from rotating under the action of external force.

[0008] Preferably, a connecting rod is fixedly connected to the outer surface of one end of the gear, and both end side walls of the connecting rod are fixedly connected to a clamping column, and the two clamping columns are respectively located on both sides of the gear, and the inner side wall of the steel waist plate is fixedly connected to a mounting block, and the outer surface of the mounting block is slidably connected to a push plate.

[0009] Through the above technical solution, the push plate is movably installed using the mounting block, thereby facilitating directional movement of the push plate. Guide rails and sliders can also be installed on the surface of the mounting block and the surface of the push plate, respectively, to facilitate further standardization.

[0010] Preferably, a movable groove is provided on the surface of the push plate, the mounting block is located inside the movable groove, the inner side wall of the movable groove is fixedly connected with a tension spring, the end of the tension spring is fixedly connected to the side wall surface of one end of the mounting block, and the opposite side wall surfaces of the two adjacent push plates are provided with extrusion grooves.

[0011] Through the above technical solution, the extrusion groove is funnel-shaped, and the two sides are respectively distributed between two adjacent push plates, so that the two adjacent push plates can be easily separated by the extrusion groove.

[0012] Preferably, a rack is fixedly connected to the other end surface of the push plate, the surface of the rack is engaged with the surface of the gear through a latching tooth, and the rack and the push plate are integrally formed.

[0013] Through the above technical solution, the racks are distributed in different directions on the surfaces of different push plates, so that when two adjacent push plates move in different directions, multiple gears can be pushed to rotate in the same direction.

[0014] Preferably, a socket is provided on the outer wall surface of the support plate, and a dislocation groove is provided on the outer wall of the support plate. The dislocation groove is located on the opening surface of the socket and is connected. The inner wall of the dislocation groove is slidably connected with a baffle, and the upper surface of the baffle is fixedly connected with a dislocation spring, and the upper end of the dislocation spring is fixedly connected to the inner top wall of the dislocation groove.

[0015] Through the above technical solution, the baffle is used to block the sockets on the surface of the support plate, thereby preventing the sockets from being accidentally blocked. Scales can also be marked on the outer surfaces of the support plate and the steel waist plate to facilitate alignment of the sockets with the extrusion grooves.

[0016] Preferably, a sleeve hole is provided on the surface of the baffle, and friction cotton is fixedly connected to the inner wall of the sleeve hole. The friction cotton is in a circular ring shape. The two side surfaces of the baffle are fixedly connected to a limit strip. The material of the limit strip is cork. A limit slot is provided on the inner side wall of the dislocation groove. The inner wall of the limit slot is slidably connected to the outer surface of the limit strip. The side wall surface of the baffle and the side wall surface of the limit strip are both provided with an injection groove, and one end of the injection groove is connected to the surface of the friction cotton.

[0017] Through the above technical solution, the cork limiting strip is used to limit the movement of the baffle, and at the same time, the opening of the liquid injection pipe is blocked.

[0018] Preferably, the inner wall of the support plate is fixedly connected with an injection tube, one end of the injection tube is connected to the interior of the limit groove, the outer wall surface of the support plate is fixedly connected with a bracket, the inner bottom wall of the bracket is fixedly connected with an oil storage bag, the oil storage bag is filled with silicone oil, the inner wall of the oil storage bag is connected to the other end of the injection tube, and the lower end side wall surface of the baffle is fixedly connected with a pressure plate.

[0019] Through the above technical solution, the oil storage bag is used to store silicone oil, thereby facilitating timely lubrication of the surface of the extrusion head.

[0020] Preferably, the surfaces of the two output shafts of the dual-axis drive motor are fixedly connected with screws, and the surfaces of the screws are threadedly sleeved with an extension tube, and the extension tube includes a plug-in end and a lap end, and the surface of the plug-in end is slidably plugged into the opening of the support tube.

[0021] Through the above technical solution, the extension tube is spliced ​​with the support tube through the plug-in end, thereby facilitating extension and contraction.

[0022] Preferably, the inner wall of the support tube is fixedly connected with a limiting push strip, the outer wall surface of the plug-in end is provided with a groove, the outer surface of the limiting push strip is slidably connected to the inner wall of the groove, one side of the overlapping end is located inside the bracket, the inner wall surface of the overlapping end is fixedly connected with an extrusion block, and one end surface of the extrusion block is installed with an extrusion head.

[0023] Through the above technical solution, the limiting push strip and the groove are used to limit the rotation of the stretching tube, thereby facilitating the lateral movement of the stretching tube.

[0024] A method for using a steel sheet pile support device for a long-segment prefabricated integrated pipe gallery, the method comprising: step 1, fitting the steel sheet piles to the inner wall of a foundation pit and preliminarily fixing them, inserting a support plate into a slide groove on the surface of a steel waist plate and sliding it, inserting a gear and a clamping column into the inner side of the support plate, sliding the support plate, and aligning the extrusion groove on the surface of the push plate with the socket on the surface of the support plate;

[0025] Step 2: The support tube is hoisted onto the surface of the bracket, and the extension tubes at both ends of the support tube are inserted into the bracket. The overlapping ends of the extension tube press the pressure plate, and the pressure plate drives the baffle to fall. The offset spring is stretched, and the sleeve hole on the surface of the baffle is aligned with the socket on the surface of the support plate. At the same time, the limit bar falls in the limit groove. After falling, the opening of the liquid injection groove on the surface of the limit bar is aligned with the opening of one end of the liquid injection tube. The oil storage bag is squeezed by the overlapping ends of the extension tube, and the silicone oil in the oil storage bag is filled into the friction cotton through the liquid injection tube and the liquid injection groove;

[0026] Step three, start the dual-axis drive motor, the dual-axis drive motor drives the screw to rotate, the stretching cylinder is squeezed toward the surface of the support plate under the action of the screw and the limit push strip, the stretching cylinder drives the extrusion head through the sleeve hole on the surface of the baffle and the jack on the surface of the support plate, and inserts into the inside of the support plate and the inside of the steel waist plate, and at the same time, the friction cotton coats the surface of the extrusion head with silicone oil. As the stretching cylinder moves, the extrusion head is inserted into the extrusion groove and pushes the two adjacent push plates apart from each other. The push plate moves on the surface of the mounting block and causes the tension spring to be stretched. The push plate drives the rack to move on the surface of the gear, and the gear drives the card column to deflect through the connecting rod. The connecting rod tends to be vertical, and the card column is stuck in the card slot;

[0027] Step 4. When increasing the length of the support project, the dual-axis drive motor starts and drives the screw to rotate in the opposite direction. The extension tube shrinks and resets into the support tube. At the same time, the extrusion head is pulled out of the extrusion groove, and the tension spring pulls the push plate to reset. The push plate drives the rack to move on the surface of the gear. The gear drives the clamping column to deflect in the opposite direction through the connecting rod. The connecting rod tends to be horizontal, and the clamping column deflects out of the clamping groove. The next steel sheet pile and steel waist plate are installed, and the two adjacent steel waist plates are aligned. The support plate and support tube are then moved by external machinery, and the support plates slide into the next steel waist plate, and the above step 3 is repeated for support.

[0028] The beneficial effects of the present invention are:

[0029] 1. By setting up a support mechanism and performing movable installation on the surface of the steel sheet pile, the support plate reinforces the steel sheet pile and the steel waist plate on its surface, and at the same time, the support plate is used to slide between multiple aligned steel waist plates. The construction difficulty is relatively simple compared to the hoisting, making the construction project simpler and faster, thereby improving construction efficiency and facilitating use.

[0030] 2. A limiting mechanism is installed on the surface of the steel sheet pile, and the connecting rod and the clamping column in the limiting mechanism are used to limit the slider of the support plate. The connecting rod is controlled to drive the clamping column to deflect, so that the support plate can slide only when the connecting rod tends to be horizontal. When the connecting rod tends to be vertical, the sliding of the support plate is hindered, thereby facilitating the control of the movement of the support plate.

[0031] 3. A power mechanism is provided to the support mechanism, and the steel waist plate and the support plate are supported by the extension of the support tube and the extension tube. At the same time, the extrusion head on the surface of the extension tube is inserted into the steel waist plate, and the connecting rod in the steel waist plate is driven to deflect. Then, the support plate is limited by the connecting rod and the clamping column that tend to be vertical after deflection to avoid displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of a steel sheet pile support device for a long-segment prefabricated integrated pipeline corridor proposed by the present invention;

[0033] Figure 2 A steel waist plate structure sectional view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0034] Figure 3 A steel waist plate structure perspective view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0035] Figure 4 A push plate structure perspective view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0036] Figure 5 A support pipe structure perspective view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0037] Figure 6 A support plate structure perspective view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0038] Figure 7 A support plate structure sectional view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0039] Figure 8 A baffle structure perspective view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0040] Figure 9 A support pipe structure sectional view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application;

[0041] Figure 10 A stretching cylinder structure perspective view of a long segment prefabricated comprehensive pipe gallery steel sheet pile support device according to the present application.

[0042] In the figure: 1, steel sheet pile; 2, steel waist plate; 21, gear; 22, connecting rod; 23, clamping column; 24, mounting block; 25, push plate; 26, tension spring; 27, extrusion groove; 28, rack; 3, support plate; 31, clamping groove; 32, jack; 33, baffle; 34, staggered spring; 35, friction cotton; 36, limiting strip; 37, liquid injection groove; 38, liquid injection pipe; 39, bracket; 310, oil storage bag; 311, pressing plate; 4, double-shaft driving motor; 41, support pipe; 42, reinforcing rod; 43, screw rod; 44, stretching cylinder; 441, plug-in end; 442, lap joint end; 45, limiting push strip; 46, groove; 47, extrusion block; 48, extrusion head. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Reference Figures 1-10 A steel sheet pile support device for a long-segment prefabricated integrated pipe gallery includes a steel sheet pile 1. A limiting mechanism is installed on one side of the steel sheet pile 1. The limiting mechanism includes a steel waist plate 2. A chute is formed on one side of the outer surface of the steel waist plate 2. The inner wall of the chute is rotatably connected to a gear 21 via a rotating shaft.

[0045] A support mechanism is installed on the surface of the steel waist plate 2, which includes a support plate 3. The support plate 3 is in the shape of a Chinese character "匚". A card groove 31 is opened on the inner top wall surface and the inner bottom wall surface of the support plate 3. The card groove 31 is wavy. The outer surface of the support plate 3 is slidably connected to the inner wall of the steel waist plate 2 through the inner wall of the slide groove. A guide wheel can also be installed on the outer surface of the support plate 3 or the inner wall of the slide groove on the surface of the steel waist plate 2 to facilitate the movement of the support plate 3.

[0046] A power mechanism is installed between two adjacent support plates 3, and the power mechanism includes a dual-axis drive motor 4. The outer surface of the dual-axis drive motor 4 is fixedly sleeved with a support tube 41, and the outer surfaces of the two adjacent support tubes 41 are fixedly connected with a reinforcing rod 42. The dual-axis drive motor 4 can also be used in conjunction with an electromagnetic brake to prevent the dual-axis drive motor 4 from rotating under the action of external force.

[0047] In order to limit the support plate 3, a connecting rod 22 is fixedly connected to the outer surface of one end of the gear 21, and the side walls of both ends of the connecting rod 22 are fixedly connected to a clamping column 23. The two clamping columns 23 are respectively located on both sides of the gear 21, and the inner wall of the steel waist plate 2 is fixedly connected to a mounting block 24. The outer surface of the mounting block 24 is slidably connected to a push plate 25. The mounting block 24 is used to movably install the push plate 25, so as to facilitate the directional movement of the push plate 25. The guide rails and sliders can also be installed on the surface of the mounting block 24 and the surface of the push plate 25 respectively, so as to facilitate further standardization. A movable groove is opened on the surface of the push plate 25, and the mounting block 24 is located inside the movable groove. The inner wall of the movable groove is fixedly connected with a tension spring Spring 26, the end of the tension spring 26 is fixedly connected to the side wall surface of one end of the mounting block 24, and the opposite side wall surfaces of the two adjacent push plates 25 are provided with extrusion grooves 27. The extrusion grooves 27 are funnel-shaped, and the two sides are respectively distributed between the two adjacent push plates 25, so that the two adjacent push plates 25 can be separated by the extrusion grooves 27. The other end surface of the push plate 25 is fixedly connected with a rack 28, and the surface of the rack 28 is engaged with the surface of the gear 21 through the locking teeth. The rack 28 and the push plate 25 are integrally formed. The distribution orientation of the rack 28 on the surfaces of different push plates 25 is different, so that when the two adjacent push plates 25 move in different directions, multiple gears 21 can be pushed to rotate in the same direction.

[0048] By setting up a support mechanism for movable installation on the surface of the steel sheet pile 1, the support plate 3 reinforces the steel sheet pile 1 and the steel waist plate 2 on its surface, and at the same time, the support plate 3 is used to slide between multiple aligned steel waist plates 2. The construction difficulty is relatively simple compared to the lifting, making the construction project simpler and faster, thereby improving construction efficiency and facilitating use.

[0049] The cam 33 is fixed on the top of the cam 33 and the cam 33 is fixed on the top of the cam 33 so that the cam 33 can be tightened to the cam 33. The cam 38 is pressed against the top of the support 33 so that the cam 38 can be tightened to the top of the support 33. The cam 38 is pressed against the support 33 so that the cam 38 can be tightened to the top of the support 33.

[0050] By installing a limiting mechanism on the surface of the steel sheet pile 1, the connecting rod 22 and the clamping column 23 in the limiting mechanism are used to limit the slider of the support plate 3. The connecting rod 22 is controlled to drive the clamping column 23 to deflect, so that the support plate 3 can slide only when the connecting rod 22 tends to be horizontal. When the connecting rod 22 tends to be vertical, the sliding of the support plate 3 is hindered, thereby facilitating the control of the movement of the support plate 3.

[0051] In order to provide power for the operation of the support mechanism, screws 43 are fixedly connected to the surfaces of the two output shafts of the dual-axis drive motor 4, and an extension tube 44 is threadedly sleeved on the surface of the screw 43. The extension tube 44 includes a plug-in end 441 and a lap end 442. The surface of the plug-in end 441 is slidably plugged into the opening of the support tube 41, and the extension tube 44 is spliced ​​with the support tube 41 through the plug-in end 441, so as to facilitate extension and contraction. The inner wall of the support tube 41 is fixedly connected to a limiting push strip 45, and a groove 46 is provided on the outer wall surface of the plug-in end 441. The outer surface of the limiting push strip 45 is slidably connected to the inner wall of the groove 46. One side of the lap end 442 is located inside the bracket 39, and an extrusion block 47 is fixedly plugged into the inner wall surface of the lap end 442. An extrusion head 48 is installed on one end surface of the extrusion block 47. The limiting push strip 45 and the groove 46 are used to limit the rotation of the extension tube 44, so as to facilitate the lateral movement of the extension tube 44.

[0052] By setting up a power mechanism to provide power for the support mechanism, the steel waist plate 2 and the support plate 3 are tightly supported by the extension of the support tube 41 and the extension tube 44, and the extrusion head 48 on the surface of the extension tube 44 is inserted into the steel waist plate 2, and the connecting rod 22 in the steel waist plate 2 is driven to deflect, and then the support plate 3 is limited by the connecting rod 22 and the clamping column 23 that tend to be vertical after deflection to avoid displacement.

[0053] A method for using a steel sheet pile support device for a long-segment prefabricated integrated pipe gallery: Step 1: Fit the steel sheet pile 1 to the inner wall of the foundation pit and initially fix it, insert the support plate 3 into the slide groove on the surface of the steel waist plate 2, and slide it. The gear 21 and the clamping column 23 are inserted into the inner side of the support plate 3, and the support plate 3 is slid to align the extrusion groove 27 on the surface of the push plate 25 with the insertion hole 32 on the surface of the support plate 3;

[0054] Step 2: The support tube 41 is hoisted onto the surface of the bracket 39. The stretching tubes 44 at both ends of the support tube 41 are inserted into the bracket 39. The overlapping ends 442 of the stretching tube 44 press the pressure plate 311. The pressure plate 311 drives the baffle 33 to fall. The offset spring 34 is stretched, and the sleeve hole on the surface of the baffle 33 is aligned with the socket 32 ​​on the surface of the support plate 3. At the same time, the limit bar 36 falls in the limit groove. After falling, the opening of the injection groove 37 on the surface of the limit bar 36 is aligned with the opening of one end of the injection tube 38. The oil storage bag 310 is squeezed by the overlapping ends 442 of the stretching tube 44, and the silicone oil in the oil storage bag 310 is filled into the friction cotton 35 through the injection tube 38 and the injection groove 37.

[0055] Step three, start the dual-axis drive motor 4, the dual-axis drive motor 4 drives the screw 43 to rotate, the stretching cylinder 44 is squeezed toward the surface of the support plate 3 under the action of the screw 43 and the limit push strip 45, the stretching cylinder 44 drives the extrusion head 48 through the sleeve hole on the surface of the baffle 33 and the socket 32 ​​on the surface of the support plate 3, and inserts into the interior of the support plate 3 and the interior of the steel waist plate 2, while the friction cotton 35 coats the surface of the extrusion head 48 with silicone oil, as the stretching cylinder 44 moves, the extrusion head 48 is inserted into the extrusion groove 27, and pushes the two adjacent push plates 25 to separate from each other, the push plate 25 moves on the surface of the mounting block 24, and causes the tension spring 26 to be stretched, the push plate 25 drives the rack 28 to move on the surface of the gear 21, the gear 21 drives the card column 23 to deflect through the connecting rod 22, the connecting rod 22 tends to be vertical, and the card column 23 is stuck in the card slot 31;

[0056] Step 4. When increasing the length of the support project, the dual-axis drive motor 4 is started and drives the screw 43 to rotate in the opposite direction. The stretching tube 44 shrinks and resets into the support tube 41. At the same time, the extrusion head 48 is pulled out from the extrusion groove 27. The tension spring 26 pulls the push plate 25 to reset. The push plate 25 drives the rack 28 to move on the surface of the gear 21. The gear 21 drives the clamping column 23 to deflect in the opposite direction through the connecting rod 22. The connecting rod 22 tends to be horizontal, and the clamping column 23 deflects out of the clamping groove 31. The next steel sheet pile 1 and steel waist plate 2 are installed, and the two adjacent steel waist plates 2 are aligned. Then the support plate 3 and the support tube 41 are moved by external machinery, and the support plate 3 slides into the next steel waist plate 2, and then the above step 3 is repeated for support.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A steel sheet pile support device for a long-segment prefabricated integrated pipe gallery, comprising steel sheet piles (1), characterized in that: A limiting mechanism is installed on one side surface of the steel sheet pile (1). The limiting mechanism includes a steel waist plate (2). A chute is opened on the outer surface of one side of the steel waist plate (2), and a gear (21) is rotatably connected to the inner wall of the chute through a rotating shaft; A support mechanism is installed on the surface of the steel waist plate (2). The support mechanism includes a support plate (3). The support plate (3) is in a U shape. Card slots (31) are opened on the inner top wall surface and the inner bottom wall surface of the support plate (3). The card slots (31) are in a wavy shape. The outer surface of the support plate (3) is slidably connected to the inner wall of the steel waist plate (2) through the inner wall of the chute; A power mechanism is installed between two adjacent support plates (3). The power mechanism includes a double-shaft drive motor (4). A support pipe (41) is fixedly sleeved on the outer surface of the double-shaft drive motor (4). Reinforcing rods (42) are fixedly connected to the outer surfaces of two adjacent support pipes (41).

2. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 1 is characterized in that: One end outer surface of the gear (21) is fixedly connected with a connecting rod (22). Clamping columns (23) are fixedly connected to the side walls at both ends of the connecting rod (22). The two clamping columns (23) are respectively located on both sides of the gear (21). An installation block (24) is fixedly connected to the inner side wall of the steel waist plate (2). A push plate (25) is slidably connected to the outer surface of the installation block (24).

3. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 2 is characterized in that: An activity groove is opened on the surface of the push plate (25). The installation block (24) is located inside the activity groove. A tension spring (26) is fixedly connected to the inner side wall of the activity groove. The end of the tension spring (26) is fixedly connected to the side wall surface of one end of the installation block (24). Extrusion grooves (27) are opened on the opposite side wall surfaces of two adjacent push plates (25).

4. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 3 is characterized in that: The other end surface of the push plate (25) is fixedly connected with a rack (28). The surface of the rack (28) is engaged with the surface of the gear (21) through teeth. The rack (28) and the push plate (25) are integrally formed.

5. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 4 is characterized in that: A jacking hole (32) is opened on the outer side wall surface of the support plate (3). A dislocation groove is opened on the outer side wall of the support plate (3). The dislocation groove is located on the opening surface of the jacking hole (32) and is connected. A baffle (33) is slidably connected to the inner wall of the dislocation groove. A dislocation spring (34) is fixedly connected to the upper surface of the baffle (33). The upper end of the dislocation spring (34) is fixedly connected to the inner top wall of the dislocation groove.

6. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 5, characterized in that: A sleeve hole is opened on the surface of the baffle (33). A friction cotton (35) is fixedly connected to the inner wall of the sleeve hole. The friction cotton (35) is in a circular ring shape. Limiting strips (36) are fixedly connected to both side surfaces of the baffle (33). The material of the limiting strips (36) is cork. A limiting groove is opened on the inner side wall of the dislocation groove. The inner wall of the limiting groove is slidably connected to the outer surface of the limiting strip (36). Liquid injection grooves (37) are opened on the side wall surface of the baffle (33) and the side wall surface of the limiting strip (36). One end of the liquid injection groove (37) is communicated with the surface of the friction cotton (35).

7. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 6, characterized in that: The inner wall of the support plate (3) is fixedly connected to a liquid injection pipe (38), one end of which is in communication with the interior of the limiting groove; the outer wall surface of the support plate (3) is fixedly connected to a bracket (39); the inner bottom wall of the bracket (39) is fixedly connected to an oil storage bag (310); the oil storage bag (310) is filled with silicone oil; the inner wall of the oil storage bag (310) is in communication with the other end of the liquid injection pipe (38); and the lower side wall surface of the baffle (33) is fixedly connected to a pressure plate (311).

8. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 7, characterized in that: The surfaces of the two output shafts of the dual-axis drive motor (4) are both fixedly connected with a screw (43), the surface of the screw (43) is threadedly sleeved with a stretching tube (44), the stretching tube (44) comprises a plug end (441) and a lap end (442), and the surface of the plug end (441) is slidably plugged into the opening of the support tube (41).

9. The steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to claim 8, characterized in that: The inner wall of the support tube (41) is fixedly connected to a limit push strip (45), the outer wall surface of the plug end (441) is provided with a groove (46), the outer surface of the limit push strip (45) is slidably connected to the inner wall of the groove (46), one side of the lap end (442) is located inside the bracket (39), the inner wall surface of the lap end (442) is fixedly connected to an extrusion block (47), and one end surface of the extrusion block (47) is installed with an extrusion head (48).

10. A method for using a steel sheet pile support device for a long-segment prefabricated integrated pipe gallery according to any one of claims 1 to 9, wherein the method for using the device is as follows: Step 1, fitting the steel sheet pile (1) to the inner wall of the foundation pit and preliminarily fixing it, inserting the support plate (3) into the slide groove on the surface of the steel waist plate (2), and sliding it, inserting the gear (21) and the clamping column (23) into the inner side of the support plate (3), sliding the support plate (3), and aligning the extrusion groove (27) on the surface of the push plate (25) with the socket (32) on the surface of the support plate (3); Step 2: The support tube (41) is hoisted onto the surface of the bracket (39), and the stretching tubes (44) at both ends of the support tube (41) are inserted into the bracket (39). The overlapping ends (442) of the stretching tube (44) press the pressure plate (311), and the pressure plate (311) drives the baffle (33) to fall. The offset spring (34) is stretched, and the sleeve hole on the surface of the baffle (33) is aligned with the socket (32) on the surface of the support plate (3). At the same time, the limit bar (36) falls in the limit groove. After falling, the opening of the injection groove (37) on the surface of the limit bar (36) is aligned with the opening of one end of the injection tube (38). The oil storage bag (310) is squeezed by the overlapping ends (442) of the stretching tube (44), and the silicone oil in the oil storage bag (310) is filled into the friction cotton (35) through the injection tube (38) and the injection groove (37); Step 3: Start the dual-axis drive motor (4), which drives the screw (43) to rotate. The stretching cylinder (44) is squeezed toward the surface of the support plate (3) under the action of the screw (43) and the limit push strip (45). The stretching cylinder (44) drives the extrusion head (48) through the sleeve hole on the surface of the baffle (33) and the socket (32) on the surface of the support plate (3) and inserts it into the interior of the support plate (3) and the interior of the steel waist plate (2). At the same time, the friction cotton (35) applies silicone oil to the surface of the extrusion head (48). Coating, as the stretching cylinder (44) moves, the extrusion head (48) is inserted into the extrusion groove (27) and pushes the two adjacent push plates (25) to separate from each other. The push plate (25) moves on the surface of the mounting block (24) and causes the tension spring (26) to be stretched. The push plate (25) drives the rack (28) to move on the surface of the gear (21). The gear (21) drives the clamping column (23) to deflect through the connecting rod (22). The connecting rod (22) tends to be vertical, and the clamping column (23) is clamped into the clamping groove (31); Step 4: When the length of the support project is increased, the dual-axis drive motor (4) is started and drives the screw (43) to rotate in the opposite direction, and the stretching tube (44) is retracted and reset into the support tube (41). At the same time, the extrusion head (48) is withdrawn from the extrusion groove (27), and the tension spring (26) pulls the push plate (25) to reset. The push plate (25) drives the rack (28) to move on the surface of the gear (21). The gear (21) drives the clamping column (23) to deflect in the opposite direction through the connecting rod (22). The connecting rod (22) tends to be horizontal, and the clamping column (23) deflects out of the clamping groove (31). The next steel sheet pile (1) and steel waist plate (2) are installed, and the two adjacent steel waist plates (2) are aligned. Then the support plate (3) and the support tube (41) are moved by an external machine, and the support plate (3) slides into the next steel waist plate (2). Then the above step 3 is repeated for support.

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