Excavation construction method for foundation pit in soft geology of railway station

Abstract

The invention relates to the technical field of foundation pit excavation construction, in particular to a line station soft geological foundation pit excavation construction method.The line station soft geological foundation pit excavation construction method comprises a plurality of cast-in-place piles, an angle adjusting assembly and a plurality of clamping assemblies, the cast-in-place piles are fixed in a foundation pit, the upper ends of the cast-in-place piles are fixedly connected with a fixing plate, and one side of the fixing plate is fixedly connected with a plurality of first sliding rails; when the device is used, the drivers drive the adjusting cabins to move, the first telescopic rods and the second telescopic rods stretch out and draw back to enable the first adjusting blocks to rotate, the angle of the first adjusting plate is changed, and the first adjusting blocks can be adjusted to rotate; then a first telescopic rod and a second telescopic rod stretch out and draw back to change the angle between a first adjusting plate and a second adjusting plate, accurate adjustment of the angle of the second adjusting plate is achieved, the clamping assembly changes along with the angle of the second adjusting plate, after the clamping assembly clamps a steel plate, the steel plate can be adjusted to the corresponding angle, and the steel plate is placed on the inner wall of a foundation pit to be correspondingly fixed; and the purpose of protection is achieved.

Description

Technical Field

[0001] The invention relates to a soft geology foundation pit excavation device, in particular to a soft geology foundation pit excavation construction method for a railway station, and belongs to the technical field of foundation pit excavation construction. Background Art

[0002] With the popularization of subway transportation, rail transit has become an important transportation hub in the city. Therefore, more cities are planning to build subway transportation. However, the construction of subway transportation requires excavation of corresponding foundation pits for the construction of subway stations. Due to the different soil conditions and actual conditions in each city, the problems encountered when excavating foundation pits are also different, especially when encountering soft geological conditions and the construction of line stations. Conventional operations require digging the foundation pit to a certain depth, and then protecting and fixing the inner wall of the foundation pit accordingly. However, because of the soft geological conditions, in order to avoid the collapse of the foundation pit, the excavated foundation pit needs to be protected and fixed in time after excavation. In severe cases, they need to be carried out simultaneously, which will seriously affect the construction progress.

[0003] Therefore, it is urgent to improve the construction method of soft geological foundation pit excavation for line stations to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a method for excavating a foundation pit in soft geological conditions for a railway station. A driver pushes a connecting plate to slide along a slide rail. Since the connecting plate is connected to an angle adjustment component and a clamping component, the connecting plate will drive them to move together when it moves. The angle adjustment component can adjust the angle of itself and related components as needed. The clamping component can realize the clamping action of the object. The cast-in-place pile forms an overall system through a fixed plate, a slide rail, a connecting plate, etc. When in use, the driver drives the adjustment cabin to move, and the first telescopic rod and the second telescopic rod are telescoped to cause the adjustment block to rotate, thereby changing the angle of the adjustment plate. Then, the telescopic rods one and two telescopic rods are telescoped to change the angle between the adjustment plate one and the adjustment plate two, thereby realizing precise adjustment of the angle of the adjustment plate two. The clamping component changes with the angle of the adjustment plate two, and can be adjusted to any angle after the steel plate is clamped, so that the steel plate can be installed under the foundation pit for corresponding protection. The entire system realizes the purpose of protecting the foundation pit while digging through the coordinated action of these components.

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0006] A construction method for excavating a foundation pit in soft geology of a railway station, comprising a plurality of cast-in-place piles, an angle adjustment assembly and a plurality of clamping assemblies, wherein the plurality of cast-in-place piles are fixed in the foundation pit, the upper ends of the cast-in-place piles are fixedly connected with a fixing plate, one side of the fixing plate is fixedly connected with a plurality of slide rails, a connecting plate is slidably connected between the plurality of slide rails, and both sides of one side of the connecting plate are fixedly connected with a driver;

[0007] The angle adjustment assembly includes an adjustment cabin, a first telescopic rod and a second telescopic rod, one side of the adjustment cabin is fixedly connected to one side of the driver, an adjustment block is rotatably connected inside the adjustment cabin, the upper surface of the adjustment block is respectively fixedly connected to the first telescopic rod and the second telescopic rod, the output ends of the first telescopic rod and the second telescopic rod are hinged with an adjustment plate 1, one side of the adjustment plate is respectively fixedly connected to the telescopic rod 1 and the telescopic rod 2, the output ends of the telescopic rod 1 and the telescopic rod 2 are hinged with an adjustment plate 2, multiple groups of the clamping assemblies are fixed at both ends of the adjustment plate 2, and one side of the multiple groups of the clamping assemblies is provided with a steel plate.

[0008] Preferably, the clamping assembly includes a plurality of clamping jaws and a movable plate, two of the clamping jaws are arranged opposite to each other, and the clamping jaws are hinged to one side of the adjustment plate, and two ends of the movable plate are respectively hinged to one side of the clamping jaws.

[0009] Preferably, two slide rails are provided on both sides of one side of the steel plate, and the two slide rails correspond to the one slide rail.

[0010] Preferably, a groove is provided on one side of the fixing plate close to the second slide rail, a limit plate is slidably connected in the groove, and the limit plate corresponds to the driver.

[0011] Preferably, a plurality of return springs are provided between the bottom surface of the groove and the limit plate, and the limit plate is pushed upward by the return springs, and one side of the second slide rail corresponds to the upper surface of the limit plate.

[0012] Preferably, an adjusting gear is rotatably connected inside the adjusting cabin, and the adjusting gear is meshed with the adjusting block.

[0013] Preferably, a driving motor 1 is fixedly connected to a side of the driver close to the regulating cabin, and an output end of the driving motor 1 is connected to the regulating gear.

[0014] Preferably, an electric telescopic rod is provided on one side of the adjusting plate 2 close to the movable plate, and an output end of the electric telescopic rod is fixedly connected to one side of the movable plate.

[0015] Preferably, one side of the connecting plate is fixedly connected to track three, the track three is slidably connected to a mover, one side of the mover is fixedly connected to drive motor two, the output end of the drive motor two is fixedly connected to a bevel gear, the upper surface of the mover is fixedly connected to a support plate, the end of the support plate away from track three is rotatably connected to a limit ring, the inner thread of the limit ring is connected to a drill rod, and the drill rod and the bevel gear are meshed with each other.

[0016] A construction method for excavating a soft geological foundation pit for a railway station comprises the following steps:

[0017] S1: First, multiple cast-in-place piles are fixed in the foundation pit, and a fixing plate is connected to the upper ends of the multiple cast-in-place piles. When the foundation pit is continuously excavated to the bottom of the fixing plate, the driver moves on the slide rail 1 to drive the connecting plate to move synchronously;

[0018] S2: Then, driven by the driving motor 1, the adjusting gear is rotated, driving the adjusting block to rotate inside the adjusting cabin, and driven by the adjusting block, the first telescopic rod and the second telescopic rod are synchronously moved, and the angles of the first telescopic rod and the second telescopic rod with the adjusting cabin are adjusted, and then the angle of the adjusting block 1 is adjusted by the first telescopic rod and the second telescopic rod, and the angles of the telescopic rod 1 and the telescopic rod 2 are adjusted at the same time, and the angle of the adjusting block 2 is adjusted by the telescopic rod 1 and the telescopic rod 2;

[0019] S3: Finally, the electric telescopic rod drives the movable plate to move upward, and the movable plate drives one end of the two clamps to move upward, while making the other end of the clamps move relatively, and the two clamps are used to clamp the second slide rail on the steel plate;

[0020] S4: Then, the clamping assembly is driven to move by contracting the telescopic rod 1 and the telescopic rod 2, and the clamped steel plate is driven at the same time. The adjusting gear is driven by the driving motor to rotate, so that the adjusting block is moved, and the output ends of the first telescopic rod and the second telescopic rod are moved to the bottom of the adjusting cabin. Then, the angle and position of the clamped steel plate are adjusted accordingly with the telescopic rod 1 and the telescopic rod 2. Then, the steel plate is placed under the fixed plate, so that the slide rail 2 corresponds to the slide rail 1, and at the same time, one end of the slide rail 2 is in conflict with the limit plate, so that the limit plate is pushed to slide into the groove, and finally one side of the steel plate is in conflict with one side of the fixed plate.

[0021] S5: The mover drives the second driving motor to move to the corresponding position, and then drives the bevel gear to rotate through the second driving motor. The drill rod is rotated under the drive of the bevel gear, and the drill rod is used to drill holes on the inner wall of the foundation pit, and then soil nails are nailed into the steel plate to fix it.

[0022] The present invention has at least the following beneficial effects:

[0023] 1. The driver pushes the connecting plate to slide along the slide rail 1. Since the connecting plate is connected to the angle adjustment component and the clamping component, the connecting plate will drive them to move together when it moves. The angle adjustment component can adjust the angle of itself and related components as needed. The clamping component can realize the clamping action of the object. The cast-in-place pile constitutes an overall system through the fixed plate, the slide rail 1, the connecting plate, etc. When in use, the driver drives the adjustment cabin to move, and the first telescopic rod and the second telescopic rod are telescoped to make the adjustment block 1 rotate to change the angle of the adjustment plate 1. Then the telescopic rod 1 and the telescopic rod 2 are telescoped to change the angle between the adjustment plate 1 and the adjustment plate 2, so as to realize the precise adjustment of the angle of the adjustment plate 2. The clamping component changes with the angle of the adjustment plate 2. After the steel plate is clamped, it can be adjusted to any angle, so that the steel plate can be installed under the foundation pit for corresponding protection. The whole system realizes the purpose of protecting the foundation pit while digging through the coordinated action of these components.

[0024] 2. When the movable plate moves upward or downward, the hinged structure between its two ends and the clamping jaws will cause the clamping jaws to rotate around the hinge point with the second adjusting plate, and the two relative clamping jaws will move closer to or away from each other to achieve the clamping or loosening action. Through this linkage relationship between the movable plate and the clamping jaws, the entire clamping assembly can flexibly clamp the object as needed. This structural design allows the clamping action to be performed more accurately and effectively.

[0025] 3. During operation, the reset spring always gives the limit plate an upward elastic force, so that the limit plate is in an upward trend. When the driver moves to contact with the limit plate, the limit plate will block its further movement. When the steel plate drives the slide rail 2 to move to the corresponding position, the slide rail 2 is used to overcome the elastic force of the reset spring to move the limit plate downward. After that, the driver can move to the slide rail 2 through the slide rail 1, increasing the moving distance of the driver. The driver drives the corresponding components to drive the clamped steel plate to move, so as to continuously place the steel plate on the inner wall of the foundation pit for corresponding protective work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 A schematic diagram of the three-dimensional structure provided by the present invention;

[0028] Figure 2 The present invention provides Figure 1 A is a schematic diagram of the structure that is enlarged separately;

[0029] Figure 3 The overall cross-sectional schematic diagram provided by the present invention;

[0030] Figure 4 The present invention provides Figure 3 The structural diagram at B is enlarged separately;

[0031] Figure 5 The present invention provides Figure 4 The schematic diagram of the structure is enlarged separately at C in the middle;

[0032] Figure 6 A schematic diagram of the enlarged structure of some components provided by the present invention Figure 1 ;

[0033] Figure 7 The present invention provides Figure 6 The structural diagram at D in the middle is enlarged separately;

[0034] Figure 8 A schematic diagram of the enlarged structure of some components provided by the present invention Figure 2 ;

[0035] Fig. 9 The present invention provides Figure 8 The structural diagram at E in the middle is enlarged separately.

[0036] In the figure, 1. cast-in-place pile; 2. angle adjustment assembly; 3. clamping assembly; 4. fixing plate; 5. slide rail 1; 6. connecting plate; 7. driver; 8. adjustment cabin; 9. first telescopic rod; 10. second telescopic rod; 11. adjustment block; 12. adjustment plate 1; 13. telescopic rod 1; 14. telescopic rod 2; 15. adjustment plate 2; 16. steel plate; 21. clamping claw; 22. moving plate; 31. slide rail 2; 41. groove; 42. limit plate; 51. reset spring; 61. adjustment gear; 71. drive motor 1; 81. electric telescopic rod; 91. track 3; 92. mover; 93. drive motor 2; 94. bevel gear; 95. support plate; 96. limit ring; 97. drill rod. DETAILED DESCRIPTION

[0037] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0038] like Figure 1-Figure 9As shown, the soft geological foundation pit excavation construction method provided by the present embodiment comprises a plurality of cast-in-place piles 1, an angle adjustment assembly 2 and a plurality of clamping assemblies 3. The plurality of cast-in-place piles 1 are all fixed in the foundation pit. The cast-in-place piles 1 mainly serve to provide a supporting structure, enhance the stability of the foundation pit and prevent the side wall of the foundation pit from collapsing. The plurality of cast-in-place piles 1 work together to bear the pressure of the soil. The upper end of the cast-in-place pile 1 is fixedly connected with a fixed plate 4, and the fixed plate 4 is supported by the cast-in-place pile 1. One side of the fixed plate 4 is fixedly connected with a plurality of slide rails 5, and a connecting plate 6 is slidably connected between the plurality of slide rails 5. The slide rails 5 provide a track and guide for the sliding of the connecting plate 6 to ensure that it can move smoothly in a specific direction. A driver 7 is fixedly connected to both sides of one side. The connecting plate 6 is a movable platform that can move on the slide rail 5 and is used to carry the driver 7 and connect other related components. The driver 7 provides a power source for the sliding of the connecting plate 6 and drives the connecting plate 6 to move along the slide rail 5. During operation, the driver 7 pushes the connecting plate 6 to slide along the slide rail 5. Since the connecting plate 6 is connected to the angle adjustment component 2 and the clamping component 3, when the connecting plate 6 moves, it will drive them to move together. The angle adjustment component 2 can adjust the angle of itself and related components as needed, and the clamping component 3 can realize the clamping action of the object. The cast-in-place pile 1 forms an integral system through the fixed plate 4, the slide rail 5, the connecting plate 6, etc.

[0039] The angle adjustment assembly 2 includes an adjustment cabin 8, a first telescopic rod 9 and a second telescopic rod 10. The adjustment cabin 8 provides accommodation space and support for the internal adjustment structure. One side of the adjustment cabin 8 is fixedly connected to one side of the driver 7. The adjustment cabin 8 is internally rotatably connected with an adjustment block 11. The adjustment block 11 serves to connect and transmit angle changes. The upper surfaces of the adjustment block 11 are respectively fixedly connected to the first telescopic rod 9 and the second telescopic rod 10. When the adjustment block 11 rotates in the adjustment cabin 8, the angle of the adjustment block 11 will change, thereby changing the angle of the first telescopic rod 9 and the second telescopic rod 10. The output ends of the first telescopic rod 9 and the second telescopic rod 10 are jointly hinged with an adjustment plate 12. The first telescopic rod 9 and the second telescopic rod 10 change the angle of the adjustment block 11 through telescopic action, thereby driving the change of the angle of subsequent components. One side of the adjustment plate 12 is respectively fixedly connected with a telescopic rod 13 and a telescopic rod 2 14. When the angle of the adjustment block 11 changes, the angle of the telescopic rod 13 and the telescopic rod 2 14 will be driven to change. The output ends of the telescopic rod 13 and the telescopic rod 2 14 are jointly hinged with an adjustment plate 12. Plate 2 15, telescopic rod 1 13 and telescopic rod 2 14 further adjust the angle of adjustment plate 2 15, multiple groups of clamping components 3 are fixed at both ends of adjustment plate 2 15, and when the angle of adjustment block 112 changes, the angle of clamping component 3 will be driven to change. A group of clamping components 3 is respectively provided at both ends of adjustment plate 2 15, and a steel plate 16 is provided on one side of multiple groups of clamping components 3. Under the joint action of four groups of clamping components 3, the steel plate 16 can be clamped, and the steel plate 16 is used to fix one side of the foundation pit accordingly. When in use, the driver 7 drives the adjustment cabin 8 Movement, the telescopic action of the first telescopic rod 9 and the second telescopic rod 10 causes the adjustment block 11 to rotate, thereby changing the angle of the adjustment plate 12, and then the telescopic rod 13 and the telescopic rod 2 14 change the angle between the adjustment plate 12 and the adjustment plate 2 15, and finally the precise adjustment of the angle of the adjustment plate 2 15 is achieved, and the clamping assembly 3 changes with the change of the angle of the adjustment plate 2 15 to achieve the clamping operation of the steel plate 16 at different angles. The whole system achieves the purpose of flexible angle adjustment and clamping through the coordinated action between these components.

[0040] Among them, Figure 1-Figure 9As shown, the clamping assembly 3 includes a plurality of jaws 21 and a movable plate 22. The two jaws 21 are arranged opposite to each other, and the jaws 21 are hinged to one side of the adjusting plate 15. The jaws 21 directly contact the clamped object, and the object is clamped and released through its opening and closing action. The two ends of the movable plate 22 are hinged to one side of the jaws 21 respectively. When the movable plate 22 moves, the jaws 21 are driven to rotate through the hinge relationship with the jaws 21, thereby realizing the change of the opening and closing state of the jaws 21. When the movable plate 22 moves upward or downward, the hinge structure of its two ends and the jaws 21 will make the jaws 21 rotate around the hinge point with the adjusting plate 15, and the two relative jaws 21 will approach or move away from each other to realize the clamping or releasing action. The entire clamping assembly 3 can flexibly clamp the object as needed through this linkage relationship between the movable plate 22 and the jaws 21. This structural design allows the clamping action to be performed more accurately and effectively.

[0041] Further, such as Figure 1-Figure 9 As shown, an electric telescopic rod 81 is provided on one side of the adjustment plate 215 close to the movable plate 22, and the output end of the electric telescopic rod 81 is fixedly connected to one side of the movable plate 22. The electric telescopic rod serves as a power source, and provides a driving force to push or pull the movable plate 22 through a telescopic action. The movable plate 22 moves under the action of the electric telescopic rod 81, and then drives the clamping claw 21 to move to achieve clamping or loosening. The electric telescopic rod 81 is extended and retracted according to the control signal, and its output end pushes or pulls the movable plate 22. The movable plate 22 is displaced under the drive of the electric telescopic rod 81. Since the movable plate 22 is hinged with the clamping claw 21, the clamping claw 21 is driven to rotate around the hinge point, and the distance between the clamping claws 21 is changed, so as to achieve the clamping or loosening of the object. During the whole process, the action of the electric telescopic rod 81 directly determines the position change of the movable plate 22, and then triggers the clamping action of the clamping claw 21. The various components cooperate with each other and work together to achieve the purpose of accurately controlling the clamping state.

[0042] Among them, Figure 1-Figure 9 As shown, the adjusting cabin 8 is internally connected to an adjusting gear 61, which is meshed with the adjusting block 11. The adjusting gear 61 drives the meshed adjusting block 11 to move by rotating, playing a key role in transmitting power and changing the angle of the adjusting block 11. The adjusting block 11 is meshed with the adjusting gear 61, and changes its own angle under the drive of the adjusting gear 61, thereby affecting the angles and positions of the first telescopic rod 9 and the second telescopic rod 10 connected thereto;

[0043] Further, such as Figure 1-Figure 9As shown, a driving motor 71 is fixedly connected to one side of the driver 7 close to the adjustment cabin 8. The output end of the driving motor 71 is connected to the adjustment gear 61. The driving motor 71 is a power source, providing rotational power to drive the adjustment gear 61 to rotate. The adjustment gear 61 rotates under the drive of the driving motor 71, thereby driving the adjustment block 11 meshing therewith to move, thereby realizing the transmission of angle adjustment.

[0044] Among them, Figure 1-Figure 9 As shown, two slide rails 31 are provided on both sides of one side of the steel plate 16, and the two slide rails 31 correspond to the one slide rail 5. When the steel plate 16 moves to the bottom of the fixed plate 4, one side of the steel plate 16 and one side of the fixed plate 4 collide with each other, and the two slide rails 31 will collide with the one slide rail 5, so that the driver 7 drives the connecting plate 6 to move on the two slide rails 31, and the side wall of the foundation pit is reinforced from top to bottom in sequence.

[0045] Further, such as Figure 1-Figure 9 As shown, a groove 41 is provided on one side of the fixing plate 4 close to the second slide rail 31, and the groove 41 provides a space for the limiting plate 42 to be installed and moved. The limiting plate 42 is slidably connected in the groove 41, and the limiting plate 42 mainly serves to limit the position of the driver 7 and block it, so as to prevent the driver 7 from excessive movement or maintain its relative position under certain circumstances. The limiting plate 42 corresponds to the driver 7;

[0046] Further, if Figure 1-Figure 9 As shown, a plurality of return springs 51 are provided between the bottom surface of the groove 41 and the limit plate 42, and the return springs 51 are used to push the limit plate 42 to move upward. The return springs 51 provide elastic force to push the limit plate 42 to move upward, so that it remains in a specific position and can be reset after being subjected to external force. One side of the slide rail 31 corresponds to the upper surface of the limit plate 42, and one side of the slide rail 31 contacts the upper surface of the limit plate 42, and the slide rail 31 is used to push the limit plate 42 into the groove 41, releasing the limit plate 4 2 limit of the driver 7, when working, the return spring 51 always gives an upward elastic force to the limit plate 42, so that the limit plate 42 is in an upward trend. When the driver 7 moves to contact with the limit plate 42, the limit plate 42 will block its further movement. When the steel plate 16 drives the second slide rail 31 to move to the corresponding position, the second slide rail 31 overcomes the elastic force of the return spring 51 to move the limit plate 42 downward, and then the driver 7 can move to the second slide rail 31 through the slide rail 1 5, thereby increasing the moving distance of the driver 7;

[0047] Among them, Figure 1-Figure 9As shown, one side of the connecting plate 6 is fixedly connected with a track three 91, and the track three 91 is slidably connected with a mover 92. The track three 91 provides a moving path and guide for the mover 92. The mover 92 can move along the track three 91, driving other components thereon to change their positions. One side of the mover 92 is fixedly connected with a drive motor two 93, and the output end of the drive motor two 93 is fixedly connected with a bevel gear 94. The drive motor two 93 provides power and drives the bevel gear 94 to rotate through the output shaft. The upper surface of the mover 92 is fixedly connected with a support plate 95, and the end of the support plate 95 away from the track three 91 is rotatably connected to a limit ring 96. The support plate 95 plays a role in supporting and fixing the limit ring 96. The limit ring 96 is internally threadedly connected with a drill rod 97. The limit ring 96 plays a certain role in limiting and supporting the drill rod 97 and allows the drill rod 97 to rotate. The drill rod 97 is meshed with the bevel gear 94, and the bevel gear 94 is meshed with the drill rod 97 to transmit the power of the drive motor two 93 to the drill rod 97 to rotate it.

[0048] like Figure 1-Figure 9 As shown, this embodiment provides a method for excavating a soft geological foundation pit for a railway station, comprising the following steps:

[0049] S1: First, multiple cast-in-place piles 1 are fixed in the foundation pit, and the fixing plates 4 are connected to the upper ends of the multiple cast-in-place piles 1. When the foundation pit is continuously excavated to the bottom of the fixing plates 4, the driver 7 moves on the slide rail 1 5, driving the connecting plate 6 to move synchronously;

[0050] S2: Then, driven by the driving motor 1 71, the adjusting gear 61 is rotated, driving the adjusting block 11 to rotate inside the adjusting chamber 8, and driven by the adjusting block 11, the first telescopic rod 9 and the second telescopic rod 10 are synchronously moved, and the angles of the first telescopic rod 9 and the second telescopic rod 10 with the adjusting chamber 8 are adjusted, and then the angle of the adjusting block 11 is adjusted by the first telescopic rod 9 and the second telescopic rod 10, and the angles of the telescopic rod 13 and the telescopic rod 2 14 are adjusted at the same time, and the angle of the adjusting block 11 is adjusted by the telescopic rod 13 and the telescopic rod 2 14;

[0051] S3: Finally, the electric telescopic rod 81 drives the movable plate 22 to move upward, and drives one end of the two clamping claws 21 to move upward through the movable plate 22, and at the same time makes the other end of the clamping claws 21 move relatively, and uses the two clamping claws 21 to clamp the slide rail 2 31 on the steel plate 16;

[0052] S4: Then, the clamping assembly 3 is driven to move by contracting the telescopic rod 13 and the telescopic rod 2 14, and the clamped steel plate 16 is driven at the same time. The adjusting gear 61 is driven by the driving motor to rotate, so that the adjusting block 11 is moved, and the output ends of the first telescopic rod 9 and the second telescopic rod 10 are moved to the bottom of the adjusting cabin 8. The angle and position of the clamped steel plate 16 are adjusted accordingly by cooperating with the telescopic rod 1 13 and the telescopic rod 2 14, and then the steel plate 16 is placed under the fixed plate 4, so that the slide rail 2 31 corresponds to the slide rail 1 5, and at the same time, one end of the slide rail 2 31 is in conflict with the limit plate 42, so as to push the limit plate 42 to slide into the groove 41, and finally one side of the steel plate 16 is in conflict with one side of the fixed plate 4;

[0053] S5: The mover 92 drives the driving motor 2 93 to move to the corresponding position, and then the driving motor 2 93 drives the bevel gear 94 to rotate, and the drill rod 97 is rotated under the drive of the bevel gear 94, and the drill rod 97 is used to drill holes on the inner wall of the foundation pit, and then soil nails are nailed into the steel plate 16 to fix it.

[0054] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0055] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0056] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A construction method for excavating a soft geological foundation pit for a railway station, comprising a plurality of cast-in-place piles (1), an angle adjustment assembly (2) and a plurality of clamping assemblies (3), characterized in that: The plurality of cast-in-place piles (1) are fixed in the foundation pit, the upper end of the cast-in-place pile (1) is fixedly connected to a fixing plate (4), one side of the fixing plate (4) is fixedly connected to a plurality of slide rails (5), the plurality of slide rails (5) are slidably connected to a connecting plate (6), and one side of the connecting plate (6) is fixedly connected to both sides with a driver (7); The angle adjustment assembly (2) comprises an adjustment cabin (8), a first telescopic rod (9) and a second telescopic rod (10); one side of the adjustment cabin (8) is fixedly connected to one side of the driver (7); an adjustment block (11) is rotatably connected inside the adjustment cabin (8); the upper surface of the adjustment block (11) is respectively fixedly connected to the first telescopic rod (9) and the second telescopic rod (10); the output ends of the first telescopic rod (9) and the second telescopic rod (10) are hingedly connected to an adjustment plate 1 (12); one side of the adjustment plate 1 (12) is respectively fixedly connected to a telescopic rod 1 (13) and a telescopic rod 2 (14); the output ends of the telescopic rod 1 (13) and the telescopic rod 2 (14) are jointly hingedly connected to an adjustment plate 2 (15); a plurality of groups of the clamping assemblies (3) are fixedly connected to both ends of the adjustment plate 2 (15); a steel plate (16) is provided on one side of the plurality of groups of the clamping assemblies (3).

2. The method for excavating a soft geological foundation pit for a railway station according to claim 1, characterized in that: The clamping assembly (3) comprises a plurality of clamping jaws (21) and a movable plate (22), wherein the two clamping jaws (21) are arranged opposite to each other, and the clamping jaws (21) are hinged to one side of the second adjustment plate (15), and the two ends of the movable plate (22) are respectively hinged to one side of the clamping jaw (21).

3. The method for excavating a soft geological foundation pit for a railway station according to claim 1, characterized in that: Slide rails 2 (31) are provided on both sides of one side of the steel plate (16), and the slide rails 2 (31) correspond to the slide rails 1 (5).

4. The method for excavating a soft geological foundation pit for a railway station according to claim 3, characterized in that: A groove (41) is provided on one side of the fixing plate (4) close to the second slide rail (31), and a limit plate (42) is slidably connected in the groove (41), and the limit plate (42) corresponds to the driver (7).

5. The method for excavating a soft geological foundation pit for a railway station according to claim 4, characterized in that: A plurality of return springs (51) are provided between the bottom surface of the groove (41) and the limit plate (42), and the limit plate (42) is pushed upward by the return springs (51), and one side of the second slide rail (31) corresponds to the upper surface of the limit plate (42).

6. The method for excavating a soft geological foundation pit for a railway station according to claim 1, characterized in that: An adjusting gear (61) is rotatably connected inside the adjusting cabin (8), and the adjusting gear (61) and the adjusting block (11) are meshed with each other.

7. The method for excavating a soft geological foundation pit for a railway station according to claim 6, characterized in that: A driving motor 1 (71) is fixedly connected to a side of the driver (7) close to the regulating cabin (8), and an output end of the driving motor 1 (71) is connected to the regulating gear (61).

8. The method for excavating a soft geological foundation pit for a railway station according to claim 2, characterized in that: An electric telescopic rod (81) is provided on one side of the second adjustment plate (15) close to the movable plate (22), and an output end of the electric telescopic rod (81) is fixedly connected to one side of the movable plate (22).

9. The method for excavating a soft geological foundation pit for a railway station according to claim 1, characterized in that: One side of the connecting plate (6) is fixedly connected to a track three (91), the track three (91) is slidably connected to a mover (92), one side of the mover (92) is fixedly connected to a drive motor two (93), the output end of the drive motor two (93) is fixedly connected to a bevel gear (94), the upper surface of the mover (92) is fixedly connected to a support plate (95), one end of the support plate (95) away from the track three (91) is rotatably connected to a limit ring (96), the inner part of the limit ring (96) is threadedly connected to a drill rod (97), and the drill rod (97) and the bevel gear (94) are meshed with each other.

10. A construction method for excavating a soft geological foundation pit for a railway station, characterized in that: The steps include: S1: First, a plurality of cast-in-place piles (1) are fixed in the foundation pit, and a fixing plate (4) is connected to the upper ends of the plurality of cast-in-place piles (1). When the excavation in the foundation pit continues until the bottom of the fixing plate (4) is reached, a driver (7) is used to move on a slide rail (5), thereby driving a connecting plate (6) to move synchronously; S2: Then, driven by the driving motor 1 (71), the adjusting gear (61) is rotated, driving the adjusting block (11) to rotate inside the adjusting chamber (8), and driven by the adjusting block (11), the first telescopic rod (9) and the second telescopic rod (10) are synchronously moved, and the angles of the first telescopic rod (9) and the second telescopic rod (10) with the adjusting chamber (8) are adjusted, and then the angle of the adjusting block (11) 1 is adjusted by the first telescopic rod (9) and the second telescopic rod (10), and the angles of the telescopic rod 1 (13) and the telescopic rod 2 (14) are adjusted at the same time, and the angle of the adjusting block (11) 2 is adjusted by the telescopic rod 1 (13) and the telescopic rod 2 (14); S3: Finally, the electric telescopic rod (81) drives the movable plate (22) to move upward, and the movable plate (22) drives one end of the two clamping claws (21) to move upward, and at the same time, the other end of the clamping claws (21) moves relatively, and the two clamping claws (21) are used to clamp the second slide rail (31) on the steel plate (16); S4: Then, the clamping assembly (3) is driven to move by contracting the telescopic rod 1 (13) and the telescopic rod 2 (14), and the clamped steel plate (16) is driven at the same time. The driving motor is used to drive the adjusting gear (61) to rotate, so that the adjusting block (11) is moved, and the output ends of the first telescopic rod (9) and the second telescopic rod (10) are moved to the bottom of the adjusting cabin (8). The angle and position of the clamped steel plate (16) are adjusted accordingly in coordination with the telescopic rod 1 (13) and the telescopic rod 2 (14). Then, the steel plate (16) is placed under the fixed plate (4), so that the slide rail 2 (31) corresponds to the slide rail 1 (5), and at the same time, one end of the slide rail 2 (31) is in contact with the limit plate (42), so as to push the limit plate (42) to slide into the groove (41), and finally one side of the steel plate (16) is in contact with one side of the fixed plate (4); S5: The mover (92) drives the second driving motor (93) to move to the corresponding position, and then the second driving motor (93) drives the bevel gear (94) to rotate, and the drill rod (97) is rotated under the drive of the bevel gear (94), and the drill rod (97) is used to drill holes on the inner wall of the foundation pit, and then soil nails are nailed into the steel plate (16) to fix it.

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