Fine flat strip control construction method for assembly type station

Abstract

The precise leveling strip control construction method for the assembly type station comprises the following steps that S1, precise leveling strips are laid at the bottom of a foundation pit in the length direction of the foundation pit, and the multiple precise leveling strips are arranged in the width direction of the foundation pit at intervals; s2, the construction length of each section of the fine leveling strip is 10-15 m, and 5-10 m is reserved on the two sides of the fine leveling strip; s3, flatness measurement is carried out on the finely-leveled strip, and the flatness is trimmed; s4, grouting pipes are embedded in gaps between the adjacent fine flat strips; s5, hoisting and assembling the prefabricated parts; and S6, after all the prefabricated parts are assembled, grouting is conducted through a grouting pipe, and the space between the adjacent fine and flat strips is completely filled. The multiple fine flat strips are adopted for sliding of the prefabricated part, the resistance generated when the prefabricated part moves is reduced, meanwhile, supporting can be provided for the prefabricated part, the assembling precision of the prefabricated part is guaranteed, and then the construction quality is guaranteed while the construction efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of subway station construction technology, and in particular to a method for controlling the construction of prefabricated stations using precision leveling strips. Background Technology

[0002] With the development of technology and the increasing demand for construction efficiency, prefabricated buildings are becoming more and more common. Prefabricated subway stations are a recent development, in which most of the subway station components are prefabricated in factories, transported to the station, and assembled through assembly and on-site casting to form the subway station.

[0003] The sealing concrete for subway station foundation pits was originally cast in place, but the sealing concrete for prefabricated subway stations uses precast components. Considering the weight and difficulty of prefabrication, the width of the precast components generally does not exceed 1.5 meters. After the precast components are transported to the site, they are lifted to the bottom of the foundation pit by a crane. However, since the side walls of the foundation pit require a lot of support beams, these support beams cause great interference to the lifting of the precast components. As a result, some precast components need to be moved a certain distance after being lifted to the bottom of the foundation pit to reach the preset position. The soil at the bottom of the foundation pit also creates great resistance to the movement of the precast components. Summary of the Invention

[0004] The purpose of this application is to provide a construction method for precision leveling strip control in prefabricated railway stations, so as to improve the problem of difficulty in moving prefabricated components at the bottom of the foundation pit.

[0005] This application provides a construction method for precision leveling strip control in prefabricated railway stations, which adopts the following technical solution: A construction method for controlling the leveling strip in prefabricated railway stations includes the following steps: S1. Lay a leveling strip along the length of the foundation pit at the bottom of the foundation pit. Multiple leveling strips are provided and are spaced apart along the width of the foundation pit. S2. The construction length of each section of the precision leveling strip is 10 to 15m, and 5 to 10 meters are reserved on both sides of the precision leveling strip; S3. Measure the flatness of the precision flat strip and adjust the flatness accordingly; S4. Grouting pipes are embedded in the gaps between adjacent fine-level strips; S5. Hoisting and assembling prefabricated components; S6. After all prefabricated components are assembled, grouting is carried out through the grouting pipe to completely fill the gaps between adjacent fine-level strips.

[0006] By adopting the above technical solution, multiple precision-level strips are used for the sliding of precast components, which reduces the resistance when the precast components move and provides support for them, ensuring the assembly accuracy of the precast components. This improves construction efficiency while ensuring construction quality.

[0007] Optionally, step S3 includes the following steps: S31, compacting the fine flat strip using a compaction device.

[0008] With the above technical solution, the original bottom sealing concrete covered the entire bottom of the foundation pit, so the bearing capacity of the soil at the bottom of the foundation pit was sufficient. However, the area of ​​the current fine leveling strip is greatly reduced, resulting in an increase in local pressure. This causes the fine leveling strip to settle after the precast components are placed on it, eventually leading to the fine leveling strip tilting and affecting the construction quality. Therefore, it is necessary to compact the fine leveling strip with a compaction device to reduce the possibility of settlement in the later stage.

[0009] Optionally, step S3 may further include the following step: S32, grinding the surface of the fine flat strip using a grinding assembly to make the height of the multiple fine flat strips consistent.

[0010] The above technical solution allows for a certain margin when casting the high-quality strip, which facilitates the subsequent grinding process to ensure that the height of the high-quality strip meets the set requirements. At the same time, grinding can improve the smoothness of the surface of the high-quality strip, further reducing the resistance of the precast components moving on the high-quality strip. In addition, it can also reduce the difficulty of the construction of the high-quality strip and reduce the need for precision control of the top of the high-quality strip.

[0011] Optionally, the compaction device includes a gantry frame and a compaction assembly. The lower ends of both sides of the gantry frame are connected to movable components. The compaction assembly can press the high-quality strip tightly onto it, and the movable components drive the gantry frame to move, so as to continuously compact the high-quality strip.

[0012] Through the above technical solution, the moving component drives the gantry to move, so as to continuously compact the high-quality strip and improve the compaction efficiency.

[0013] Optionally, the moving component employs a tracked mechanism.

[0014] The above technical solution uses a tracked mechanism as the moving mechanism, which facilitates movement at the bottom of the pit and reduces the possibility of slippage.

[0015] Optionally, the compaction assembly includes four jacks, with the same mounting plate connected between the output ends of every two jacks, and a compaction roller rotatably connected between the two mounting plates.

[0016] By adopting the above technical solution, four jacks are used to facilitate the stability and reliability of the compaction roller, while also ensuring that the pressure provided is sufficient to compact the fine-level strip. At the same time, each jack is controlled independently, which makes it easy to adjust the angle of the compaction roller, thereby allowing the compaction roller to better fit the surface of the fine-level strip.

[0017] Optionally, a vibration motor is mounted on the mounting plate.

[0018] By adopting the above technical solution, the vibration motor can be used to make the compaction roller vibrate, thereby better compacting the fine flat strip.

[0019] Optionally, the mounting plate is hinged to the movable end of the jack, the jack is hinged to the gantry frame, and the two ends of the compaction roller are respectively ball-jointed with the two mounting plates.

[0020] The above technical solution allows the mounting plate to be hinged to the movable end of the jack, which can block the transmission of vibration and reduce the impact of vibration on the jack. At the same time, the hinges at all positions make it easy for the jack to adjust the angle of the compaction roller, thereby better fitting the fine flat strip.

[0021] Optionally, the grinding assembly includes a support plate, a drive motor, and a grinding disc. The drive motor is fixedly connected to the support plate, and the output shaft of the drive motor passes through the support plate and is fixedly connected to the grinding disc.

[0022] By adopting the above technical solution, the surface of the precision flat strip can be easily ground by the grinding disc, thereby improving the smoothness and precision of the precision flat strip surface.

[0023] Optionally, the support plate can be detachably connected between the two mounting plates.

[0024] By adopting the above technical solution, the support plate is installed between the two mounting plates, which facilitates the movement of the grinding disc by the gantry frame, reduces the required equipment, and lowers construction costs. At the same time, grinding can only be carried out after compaction is completed, so the equipment can be used in a reasonable way.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Multiple precision-level strips are used for the sliding of precast components, which reduces the resistance when the precast components move and provides support for the precast components, ensuring the assembly accuracy of the precast components, thereby improving construction efficiency and ensuring construction quality. 2. The original bottom sealing concrete covered the entire bottom of the foundation pit, so the bearing capacity of the soil at the bottom of the pit was sufficient. However, the area of ​​the current leveling strip has been greatly reduced, resulting in an increase in local pressure. This causes the leveling strip to settle after the precast components are placed on it, eventually leading to the leveling strip tilting and affecting the construction quality. Therefore, it is necessary to compact the leveling strip with a compaction device to reduce the possibility of settlement later. 3. When casting the high-quality strip, a certain margin is left to facilitate the subsequent grinding to ensure that the height of the high-quality strip meets the set requirements. At the same time, grinding can improve the smoothness of the surface of the high-quality strip, further reducing the resistance of the precast components moving on the high-quality strip. In addition, it can also reduce the difficulty of the construction of the high-quality strip and reduce the need for precision control of the top of the high-quality strip. 4. The moving component drives the gantry frame to move, continuously compacting the premium strip and improving compaction efficiency; 5. Using a tracked mechanism as the moving mechanism facilitates movement at the bottom of the pit and reduces the possibility of slippage; 6. Four jacks are used to facilitate the stability and reliability of lifting the compaction roller, while also ensuring that the pressure provided is sufficient to compact the fine flat strip. At the same time, each jack is individually controlled, which makes it easy to adjust the angle of the compaction roller, thereby allowing the compaction roller to better fit the surface of the fine flat strip. 7. The vibration motor facilitates the vibration of the compaction roller, thereby better compacting the fine flat strip; 8. Installing the support plate between the two mounting plates facilitates the movement of the grinding disc via the gantry frame, reducing the required equipment and lowering construction costs. Furthermore, grinding can only be carried out after compaction is completed, thus enabling the rational use of the equipment. Attached Figure Description

[0026] Figure 1 This is a top view schematic diagram illustrating the installation of prefabricated components in this invention.

[0027] Figure 2 This is a schematic diagram illustrating the compaction device in this invention.

[0028] Figure 3 This is a schematic diagram illustrating the structure of the compaction component in this invention.

[0029] Figure 4 This is a schematic diagram illustrating the grinding assembly in this invention.

[0030] In the diagram, 1. fine-level strip; 2. grouting pipe; 3. precast component; 4. compaction device; 41. gantry frame; 42. moving component; 43. jack; 44. mounting plate; 45. compaction roller; 46. vibratory motor; 5. grinding component; 51. support plate; 52. drive motor; 53. grinding disc. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] This application discloses a method for controlling the construction of prefabricated railway stations using precision leveling strips.

[0034] A construction method for controlling the leveling strip in prefabricated railway stations, referring to Figures 1 to 4 It includes the following steps: S1. Lay a leveling strip 1 along the length of the foundation pit at the bottom of the foundation pit. Multiple leveling strips 1 are provided and are spaced apart along the width of the foundation pit.

[0035] S2 and the construction length of each section of the fine-level strip 1 is 10 to 15 meters, and 5 to 10 meters are reserved on both sides of the fine-level strip 1.

[0036] S3. Measure the flatness of the precision flat strip 1 and adjust the flatness accordingly. Step S3 also includes the following steps: S31. The leveling strip 1 is compacted using the compaction device 4. The original bottom sealing concrete covered the entire bottom of the foundation pit, so the bearing capacity of the soil at the bottom of the pit was sufficient. However, the area of ​​the leveling strip 1 is now significantly reduced, leading to an increase in local pressure. This causes the leveling strip 1 to settle after the precast component 3 is placed on it, ultimately resulting in the leveling strip 1 tilting and affecting construction quality. Therefore, the leveling strip 1 needs to be compacted using the compaction device 4 to reduce the possibility of subsequent settlement.

[0037] S32. The surface of the fine-level strip 1 is ground by the grinding component 5 to make the height of multiple fine-level strips 1 consistent. A certain allowance is left when casting the fine strip to facilitate the subsequent grinding to make the height of the fine strip meet the set requirements. At the same time, grinding can improve the smoothness of the surface of the fine-level strip 1, further reduce the resistance of the precast component 3 moving on the fine-level strip 1, and also reduce the difficulty of the construction of the fine-level strip 1 and reduce the need for precision control of the top of the fine-level strip 1.

[0038] Specifically, the compaction device 4 includes a gantry frame 41 and compaction components. Movable components 42 are connected to the lower ends of both sides of the gantry frame 41. The compaction components can press firmly onto the high-quality strip, and the moving components 42 drive the gantry frame 41 to move, continuously compacting the high-quality strip. The moving components 42 drive the gantry frame 41 to move, continuously compacting the high-quality strip and improving compaction efficiency. The moving components 42 can be a tracked mechanism. Using a tracked mechanism as the moving mechanism facilitates movement at the bottom of the pit and reduces the possibility of slippage.

[0039] More specifically, the compaction assembly includes four jacks 43, with the same mounting plate 44 connected between the output ends of every two jacks 43, and a compaction roller 45 rotatably connected between the two mounting plates 44. The use of four jacks 43 facilitates the stability and reliability of the compaction roller 45, while also ensuring sufficient pressure to compact the fine-leveling strip 1. Furthermore, each jack 43 is individually controllable, allowing for easy adjustment of the angle of the compaction roller 45, thereby enabling the compaction roller 45 to better conform to the surface of the fine-leveling strip 1.

[0040] A vibration motor 46 is mounted on the mounting plate 44. The vibration motor 46 facilitates the vibration of the compaction roller 45, thereby better compacting the fine-leveling strip 1. The mounting plate 44 is hinged to the movable end of the jack 43, the jack 43 is hinged to the gantry frame 41, and the two ends of the compaction roller 45 are ball-jointed to the two mounting plates 44 respectively. The hinge between the mounting plate 44 and the movable end of the jack 43 can block the transmission of vibration and reduce the impact of vibration on the jack 43. At the same time, the hinges at all positions facilitate the jack 43 to adjust the angle of the compaction roller 45, thereby better conforming to the fine-leveling strip 1.

[0041] In addition, the grinding assembly 5 includes a support plate 51, a drive motor 52, and a grinding disc 53. The drive motor 52 is fixedly connected to the support plate 51, and the output shaft of the drive motor 52 passes through the support plate 51 and is fixedly connected to the grinding disc 53. The grinding disc 53 facilitates the grinding of the surface of the precision flat strip 1, improving the smoothness and precision of the surface of the precision flat strip 1.

[0042] It should be noted that the support plate 51 is detachably connected between the two mounting plates 44. Installing the support plate 51 between the two mounting plates 44 facilitates the movement of the grinding disc 53 via the gantry frame 41, reducing the required equipment and lowering construction costs. Furthermore, grinding can only be carried out after compaction is completed, thus enabling the rational use of the equipment.

[0043] S4. Grouting pipe 2 is installed in the gap between adjacent fine flat strips 1.

[0044] S5. Hoisting and assembling prefabricated components 3.

[0045] S6. After all prefabricated components 3 are assembled, grouting is carried out through grouting pipe 2 to completely fill the gaps between adjacent fine-level strips 1.

[0046] Multiple precision-level strips 1 are used to slide the precast component 3, which reduces the resistance when the precast component 3 moves, and at the same time provides support for the precast component 3, ensuring the assembly accuracy of the precast component 3, thereby improving construction efficiency and ensuring construction quality.

[0047] Working principle: Multiple precision-level strips are used to slide the precast components, which reduces the resistance when the precast components move and provides support for them, ensuring the assembly accuracy of the precast components, thereby improving construction efficiency and ensuring construction quality.

[0048] The original sealing concrete covered the entire bottom of the foundation pit, so the bearing capacity of the soil at the bottom of the pit was sufficient. However, the area of ​​the current precision leveling strip is significantly reduced, leading to increased local pressure. This causes the precision leveling strip to settle after the precast components are placed on it, eventually resulting in the strip tilting and affecting construction quality. Therefore, it is necessary to compact the precision leveling strip using a compaction device to reduce the possibility of subsequent settlement. A certain margin is left during the pouring of the precision leveling strip to facilitate subsequent grinding to ensure the height of the strip meets the set requirements. Grinding also improves the smoothness of the surface of the precision leveling strip, further reducing the resistance to the movement of precast components on it. Additionally, it reduces the difficulty of construction and simplifies the precision control of the top of the precision leveling strip.

[0049] 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 assembling a precision flat strip control construction for a station, characterized in that, It comprises the following steps: S1, laying precision strip (1) at the bottom of foundation pit along the length direction of foundation pit, the precision strip (1) is provided with a plurality of and is arranged at intervals along the width direction of foundation pit; S2, the construction length of each section of the precision strip (1) is 10-15 m, and 5-10 m is reserved on both sides of the precision strip (1); S3, the flatness of the precision strip (1) is measured, and the flatness is trimmed; S4, grouting pipe (2) is buried in the gap between adjacent precision strips (1); S5, hoisting and assembling prefabricated components (3); S6, after all the prefabricated components (3) are assembled, grouting is carried out through the grouting pipe (2), and the adjacent precision strips (1) are filled completely.

2. The method according to claim 1, characterized in that: Step S3 comprises the following steps: S31, compacting the precision strip (1) by the compaction device (4).

3. The method according to claim 2, characterized in that: Step S3 further comprises the following steps: S32, grinding the surface of the precision strip (1) by the grinding assembly (5) to make the heights of the plurality of precision strips (1) consistent.

4. The method according to claim 3, characterized in that: The compaction device (4) comprises a gantry (41) and a compaction assembly, the lower ends of the two sides of the gantry (41) are connected with a moving assembly (42), the compaction assembly can be compacted on the precision strip, and the gantry (41) is driven to move by the moving assembly (42) to continuously compact the precision strip.

5. The method according to claim 4, characterized in that: The moving assembly (42) adopts a track mechanism.

6. The method according to claim 5, wherein the method is characterized by: The compaction assembly comprises four jacks (43), the output ends of every two jacks (43) are connected with the same mounting plate (44), and a compaction roller (45) is rotatably connected between the two mounting plates (44).

7. The method according to claim 6, characterized in that: The mounting plate (44) is provided with a vibration motor (46).

8. The method according to claim 7, characterized in that: The mounting plate (44) is hinged with the movable end of the jack (43).

9. The method according to claim 7, characterized in that: The grinding assembly (5) comprises a support plate (51), a driving motor (52) and a grinding disc (53), the driving motor (52) is fixedly connected to the support plate (51), and the output shaft of the driving motor (52) penetrates through the support plate (51) and is fixedly connected with the grinding disc (53).

10. The method according to claim 9, wherein the method is characterized by: The support plate (51) is detachably connected between the two mounting plates (44).

Images