A foundation pit supporting pile and a foundation pit supporting method

Abstract

The application provides a foundation pit supporting pile and a foundation pit supporting method, and relates to the field of foundation pit supporting. The application comprises a pile plate, a first steel pile and a second steel pile with cavities, positioning assemblies arranged on the first steel pile and the second steel pile, the pile plate arranged between the two sets of positioning assemblies, a sealing gasket fixedly arranged on the pile plate, and a water seepage prevention assembly arranged between the first steel pile and the second steel pile. The water seepage prevention assembly comprises an extrusion part and a water seepage prevention part, the water seepage prevention part is arranged between the first steel pile and the second steel pile, and the extrusion part is arranged on the water seepage prevention part and abuts against the pile plate. The application has the effect of preventing water seepage.

Description

Technical Field

[0001] This application relates to the field of foundation pit support, and in particular to a foundation pit support pile and a foundation pit support method. Background Technology

[0002] Excavation pit support refers to the measures taken to support, reinforce, and protect the sidewalls and surrounding environment to ensure the safety of underground structure construction and the surrounding environment. Support piles are generally used to support the inner sidewalls of the excavation pit; these piles primarily bear lateral thrust and are commonly used in excavation pit support, slope protection, and landslide control.

[0003] Currently, in related technologies, Chinese patent CN218291977U discloses a foundation pit support pile, which includes a sheet pile body with C-shaped locking slots on both sides. The sheet pile body is equipped with a guiding mechanism to facilitate the installation of adjacent sheet pile bodies. The guiding mechanism includes a positioning plate whose shape matches the locking slots, and a guide plate is mounted on the positioning plate. This guiding mechanism is simple to install, easy to operate, and convenient to use. When installing adjacent sheet pile bodies, construction personnel no longer need to manually guide the piles, avoiding safety risks to construction workers.

[0004] However, after the sheet pile body is installed, there will be a gap between the sheet pile body and the ground. If there is external water outside the foundation pit, the external water can easily seep into the foundation pit from between the sheet pile body and the ground, which can easily affect the construction. Summary of the Invention

[0005] To address the problem that water can easily flow into the foundation pit from between the sheet pile body and the ground, this application provides a foundation pit support pile and a foundation pit support method.

[0006] In the first aspect, this application provides a foundation pit support pile, which adopts the following technical solution: A foundation pit support pile includes: a pile plate and a first steel pile and a second steel pile having a cavity. Positioning components are provided on both the first steel pile and the second steel pile. The pile plate is disposed between the two sets of positioning components. A sealing gasket is fixedly disposed on the pile plate. An anti-seepage component is provided between the first steel pile and the second steel pile. The seepage prevention component includes an extrusion section and a seepage prevention section. The seepage prevention section is disposed between the first steel pile and the second steel pile, and the extrusion section is disposed on the seepage prevention section and abuts against the pile plate.

[0007] By adopting the above technical solution, when the pile plate is hoisted between the first steel pile and the second steel pile using the positioning component, the pile plate presses down on the extrusion part, and the extrusion part will squeeze the seepage prevention part so that the seepage prevention part can be tightly attached to the ground, thereby making it difficult for external water to seep into the foundation pit from between the pile plate and the ground.

[0008] Optionally, the seepage prevention part includes: a receiving rod, an expansion bag, a connecting pipe, and a seepage prevention sleeve. The first steel pile and the second steel pile are provided with relief grooves communicating with the cavity. The end of the receiving rod passes through the relief groove and extends into the cavity. The expansion bag is fixed to the bottom of the receiving rod, and the seepage prevention sleeve is fixedly fitted on the expansion bag. A water storage cavity is provided inside the receiving rod. One end of the connecting pipe communicates with the expansion bag, and the other end communicates with the water storage cavity. The squeezing part is provided on the receiving rod.

[0009] By adopting the above technical solution, the pile plate presses down on the extrusion section, which can squeeze the water in the water storage cavity into the seepage prevention section. The seepage prevention section will expand until it is tightly attached to the ground, thereby improving the sealing between the pile plate and the ground, so that the external water is not easy to seep into the foundation pit from between the pile plate and the ground.

[0010] Optionally, the extrusion part includes: a contact plate, a connecting rod, an extrusion plate, a return spring, and a sealing sleeve. The extrusion plate is slidably disposed in the water storage cavity. One end of the connecting rod is fixed to the extrusion plate, and the other end extends outward through the receiving rod and is fixed to the contact plate. The pile plate abuts against the contact plate. The return spring is fixed between the extrusion plate and the inner wall of the water storage cavity. The sealing sleeve is fixedly sleeved on the peripheral wall of the extrusion plate and contacts the inner wall of the water storage cavity.

[0011] By adopting the above technical solution, after the pile plate is about to be inserted, the pile plate comes into contact with the contact plate, and then the contact plate is pressed down. Through the setting of the connecting rod, the squeezing plate is pressed down. During this process, the water in the water storage chamber will be pressed into the expansion bag through the connecting pipe. The expansion bag continuously drives the seepage prevention sleeve to expand and grow until the seepage prevention sleeve is pressed tightly against the ground.

[0012] Optionally, a pretreatment assembly is provided between the receiving rod and the first steel pile and the second steel pile. The pretreatment assembly includes a treatment section, which includes a treatment plate connected to the receiving rod.

[0013] By adopting the above technical solution, the treatment plate can be used to push and sweep away materials such as gravel on the ground below the seepage-proof sleeve, so that the seepage-proof sleeve can better adhere tightly to the ground.

[0014] Optionally, the pretreatment component further includes a moving part, which includes a slider and a lead screw. The bottom of the receiving rod is provided with a receiving groove. The slider is slidably disposed in the receiving groove. The processing plate is fixedly connected to the slider through the fixing rod. The lead screw is rotatably installed in the receiving groove and passes through the slider and is threadedly connected to the slider.

[0015] By adopting the above technical solution, the screw is rotated to drive the slider to slide from one end to the other in the receiving groove; during this process, the treatment plate can sweep away the stones and other materials on the ground below the receiving rod, so that the seepage-proof sleeve can fit more tightly with the ground.

[0016] Optionally, the pretreatment assembly further includes a pressing part, which includes a cam, a limiting block, a rotating rod, a sleeve, a telescopic rod, a pressing plate, and a pressing spring. The rotating rod is rotatably installed in the receiving groove and passes through the slider. A limiting groove is formed on the rotating rod, and the limiting block is slidably disposed in the limiting groove. The cam is sleeved on the rotating rod and fixed to the limiting block. The cam is in contact with the slider. One end of the pressing spring is fixed to the processing plate, and the other end is fixed to the pressing plate. The sleeve is fixed to the slider. One end of the telescopic rod extends and retracts inside the sleeve, and the other end is fixed to the pressing plate.

[0017] By adopting the above technical solution, the slider will stop sliding after sliding a distance equal to the length of the treatment plate. At this time, the rotating rod will be rotated, and the cam will rotate along with the rotating rod. During the rotation of the cam, the protruding part of the cam will press down on the lower pressure plate. During the pressing process, the lower pressure spring will be compressed to provide downward pressure on the treatment plate, so that the treatment plate can flatten the ground to a certain extent, so that the ground is relatively flat and in the same plane, and the seepage prevention sleeve can better fit tightly to the ground.

[0018] Optionally, the pretreatment component further includes: a first driving unit, a second driving unit, and a transmission unit. The first driving unit includes: a first driving rod, a first driving gear, a first driven gear, and a plurality of first racks. The first driving rod is rotatably mounted in the cavity of the first steel pile and is coaxially fixed with the first driving gear. One end of the lead screw passes through the cavity of the first steel pile and is coaxially fixed with the first driven gear. The first driving gear meshes with the first driven gear. The first rack is fixed to the pile plate. The transmission unit is disposed between the first rack and the first driving rod and between the pile plate and the second driving unit.

[0019] By adopting the above technical solution, during the placement of the pile plate, the transmission unit is used to drive the first drive rod to rotate. The rotation of the first drive rod will sequentially drive the rotation of the first driving gear, the first driven gear, and the lead screw, so that the rotation of the lead screw can drive the slider to slide.

[0020] Optionally, the pretreatment component further includes a second driving unit, which includes a second driving rod, a second driving gear, a second driven gear, and a plurality of second racks. The second driving rod is rotatably mounted in the cavity on the second steel pile and is coaxially fixed with the second driving gear. One end of the rotating rod passes through the cavity on the second steel pile and is coaxially fixed with the second driven gear. The second driving gear meshes with the second driven gear. The second rack is fixed to the pile plate. The transmission unit is disposed between any of the first racks and the first driving rod and between any of the second racks and the second driving rod.

[0021] By adopting the above technical solution, during the placement of the pile plate, the transmission unit is used to drive the second drive rod to rotate. The rotation of the second drive rod will sequentially drive the rotation of the second driving gear, the second driven gear, and the rotating rod, thereby driving the cam to rotate.

[0022] Optionally, each transmission unit includes: a transmission rod, a linkage rod, a transmission belt, a transmission gear, a linkage gear, and a rotating gear. Both the first and second steel piles have clearance holes for the transmission gear. The transmission rod and the linkage rod are rotatably mounted within the cavity. The transmission gear is coaxially sleeved on the transmission rod and meshes with the corresponding first and second racks. The linkage gear is coaxially sleeved on the linkage rod. The rotating gear of the first transmission unit is coaxially sleeved on the first drive rod. The rotating gear of the second transmission unit is coaxially sleeved on the second drive rod and meshes with the corresponding linkage gear. The transmission belt drives between the linkage rod and the transmission rod. By adopting the above technical solution, during the placement of the pile plate, the first rack and the second rack alternately mesh with the corresponding transmission gear to drive the transmission gear to rotate. The rotation of the transmission gear will sequentially drive the corresponding transmission rod, transmission belt, linkage rod, linkage gear and rotating gear to rotate, thereby driving the corresponding first drive rod and second drive rod to rotate.

[0023] Secondly, this application provides a method for foundation pit support using foundation pit support piles, which adopts the following technical solution: A method for supporting a foundation pit using retaining piles includes the following steps: S1: Drive the first and second steel piles into the ground; S2: Install the seepage prevention component between the first steel pile and the second steel pile; S3: Hoist the pile sheet between the first and second steel piles; at the same time, the seepage prevention components will be tightly attached to the ground; S4: Use a diagonal bracing device to provide diagonal support for the pile plate.

[0024] By adopting the above technical solution, water from the periphery of the foundation pit is less likely to seep into the pit from between the pile plate and the ground.

[0025] In summary, this application includes at least one of the following beneficial effects: 1. When the pile plate is hoisted between the first and second steel piles using the positioning components, the pile plate will press down the extrusion section, which will squeeze the anti-seepage section so that the anti-seepage section can be tightly attached to the ground, thus making it difficult for external water to seep into the foundation pit from between the pile plate and the ground.

[0026] 2. The pile plate presses down on the extrusion section, which forces the water in the water storage chamber into the seepage prevention section. The seepage prevention section will then expand until it is tightly attached to the ground, thereby improving the sealing between the pile plate and the ground.

[0027] 3. Rotate the lead screw to drive the slider to slide from one end to the other in the receiving groove; during this process, the treatment plate can push and sweep away the stones and other materials on the ground below the receiving rod, so that the seepage prevention sleeve can fit more tightly with the ground. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram according to an embodiment of this application; Figure 2 yes Figure 1 A schematic top view; Figure 3 It is along Figure 2 A schematic cross-sectional view taken by the cutting line AA in the diagram; Figure 4 yes Figure 3 A schematic enlarged view of part B in the diagram; Figure 5 It is along Figure 2 A schematic cross-sectional view cut off by the section line CC; Figure 6 yes Figure 5 A schematic enlarged view of part D in the middle section; Figure 7 yes Figure 5 A schematic enlarged view of part E in the middle.

[0029] In the diagram: 1. Pile plate; 11. Installation groove; 12. First steel pile; 13. Second steel pile; 14. Cavity; 15. Displacement groove; 16. Displacement hole; 17. Sealing gasket; 2. Positioning assembly; 21. Positioning strip; 211. Positioning groove; 22. Guide plate; 3. Seepage prevention part; 31. Receiving rod; 311. Water storage cavity; 312. Receiving groove; 32. Expansion bag; 33. Connecting pipe; 34. Seepage prevention sleeve; 4. Extrusion part; 41. Contact plate; 42. Connecting rod; 43. Extrusion plate; 44. Return spring; 45. Sealing sleeve; 5. Treatment part; 51. Treatment plate; 6. Moving part; 61. Sliding block; 62. Lead screw; 7. Pressing part; 71. Cam; 72. Limiting block; 73. Rotating rod; 73. Limiting groove; 74. Sleeve; 75. Telescopic rod; 76. Pressing plate; 77. Pressing spring; 8. First driving part; 81. First driving rod; 82. First driving gear; 83. First driven gear; 84. First rack; 9. Second driving part; 91. Second driving rod; 92. Second driving gear; 93. Second driven gear; 94. Second rack; 10. Transmission part; 101. Transmission rod; 102. Linkage rod; 103. Transmission belt; 104. Transmission gear; 105. Linkage gear; 106. Rotating gear. Detailed Implementation

[0030] This application provides a foundation pit support pile.

[0031] See Figure 1 A typical foundation pit support pile may include: a pile plate 1, a first steel pile 12, and a second steel pile 13. In this embodiment, only the first steel pile 12 and the second steel pile 13 are shown. In actual construction scenarios, multiple steel piles will be installed and arranged circumferentially along the foundation pit. Positioning components 2 are provided on the sidewalls of both the first steel pile 12 and the second steel pile 13. The pile plate 1 is positioned between the positioning components 2 on the first steel pile 12 and the second steel pile 13. During foundation pit support, a crane is used to lift the pile plate 1, and then the pile plate 1 is inserted into the positioning component 2 from the top. Thus, the pile plate 1, together with the first steel pile 12 and the second steel pile 13, jointly support the foundation pit, making it less prone to collapse of the foundation pit's sidewalls. In this embodiment, the pile plate 1 may be equipped with an inclined support device to enable the pile plate 1 to provide more stable support for the foundation pit.

[0032] See Figure 1 and Figure 2The positioning component 2 includes a positioning strip 21 and a guide plate 22. The positioning strip 21 is welded to the outer walls of the first steel pile 12 and the second steel pile 13. The positioning strip 21 has a positioning groove 211 extending from top to bottom. The two ends of the pile plate 1 along the width direction are inserted into the positioning groove 211. The guide plate 22 is fixed to the top wall of the positioning strip 21. In this embodiment, each positioning strip 21 corresponds to two guide plates 22, and the ends of the two guide plates 22 away from the positioning strip 21 are inclined away from each other. The guide plates 22 facilitate the pile plate 1 to be inserted into the positioning groove 211 more quickly. A sealing gasket 17 is fixedly provided on the inner wall of the end of the pile plate 1 located in the positioning groove 211. The sealing gasket 17 can improve the sealing between the pile plate 1 and the inner wall of the positioning groove 211.

[0033] See Figure 3 and Figure 4 In this embodiment of the application, both the first steel pile 12 and the second steel pile 13 have a cavity 14. An anti-seepage component is provided between the first steel pile 12 and the second steel pile 13. The anti-seepage component includes: a squeezing part 4 and an anti-seepage part 3.

[0034] See Figure 4 The seepage prevention section 3 includes: a receiving rod 31, an expansion bag 32, a connecting pipe 33, and a seepage prevention sleeve 34. The outer walls of the first steel pile 12 and the second steel pile 13 are provided with relief grooves 15 that connect to cavities 14. The relief grooves 15 facilitate the installation of the receiving rod 31. Both ends of the receiving rod 31 pass through the relief grooves 15 and extend into the corresponding cavities 14. The receiving rod 31 is fixedly connected to the first steel pile 12 and the second steel pile 13 by bolts. In actual construction, after the first steel pile 12 and the second steel pile 13 are driven into the ground, the inner bottom wall of the relief groove 15 is flush with the ground surface. A sealing gasket 17 is also fixedly installed on the inner wall of the relief groove 15 to improve the sealing between the receiving rod 31 and the inner wall of the relief groove 15.

[0035] See Figure 4 The expansion bag 32 is fixed to the bottom of the receiving rod 31, and the expansion bag 32 is located at one end of the receiving rod 31 along the width direction. In this embodiment, the expansion bag 32 is made of latex material. The leak-proof sleeve 34 is fixedly sleeved on the expansion bag 32. In this embodiment, the leak-proof sleeve 34 is made of rubber material. The leak-proof sleeve 34 can be used to improve the sealing performance and to protect the expansion bag 32 so that the expansion bag 32 is not easily damaged.

[0036] See Figure 4The extrusion section 4 includes a contact plate 41, a connecting rod 42, an extrusion plate 43, a return spring 44, and a sealing sleeve 45. The receiving rod 31 has a water storage cavity 311 for storing water. The extrusion plate 43 is slidably disposed within the water storage cavity 311 and slides vertically. The sealing sleeve 45 is fixedly sleeved on the peripheral wall of the extrusion plate 43, and abuts against the inner wall of the water storage cavity 311. The sealing sleeve 45 improves the sealing performance between the extrusion plate 43 and the inner wall of the water storage cavity 311.

[0037] See Figure 3 and Figure 4 One end of the connecting rod 42 is fixed to the top wall of the extrusion plate 43, and the other end extends outward through the top of the receiving rod 31 and is fixed to the bottom wall of the contact plate 41. A sealing gasket 17 is also fixedly installed on the top wall of the receiving rod 31. One end of the return spring 44 is fixed to the top wall of the extrusion plate 43, and the other end is fixed to the inner top wall of the water storage cavity 311. After the pile plate 1 stops pressing down on the contact plate 41, on the one hand, the expansion bag 32 automatically recovers its deformation, and on the other hand, the return effect of the return spring 44 is used to push the extrusion plate 43 upward in the vertical direction, thereby achieving the return effect.

[0038] After the pile plate 1 is about to be inserted, the pile plate 1 comes into contact with the contact plate 41, and then the contact plate 41 is pressed down. Through the setting of the connecting rod 42, the squeezing plate 43 is pressed down. During this process, the water in the water storage chamber 311 will be pressed into the expansion bag 32 through the connecting pipe 33. The expansion bag 32 continuously drives the seepage prevention sleeve 34 to expand and grow until the seepage prevention sleeve 34 is pressed tightly against the ground to form a seal. Thus, the water outside the foundation pit is not easy to flow into the foundation pit from the bottom of the receiving rod 31.

[0039] See Figure 5 , Figure 6 and Figure 7 A pretreatment assembly is provided between the receiving rod 31 and the first steel pile 12 and the second steel pile 13. The pretreatment assembly includes: a treatment part 5, a moving part 6, a pressing part 7, a first driving part 8, a second driving part 9, and a transmission part 10.

[0040] See Figure 5 The processing unit 5 includes a processing plate 51, which is connected to the bottom of the receiving rod 31.

[0041] See Figure 5The moving part 6 includes a slider 61 and a lead screw 62. A receiving groove 312 is formed at the bottom of the receiving rod 31 along its length. The slider 61 is slidably disposed within the receiving groove 312 and slides along its length. The processing plate 51 is fixed to the bottom of the slider 61 by a fixing rod. There is a gap between the processing plate 51 and the bottom of the receiving rod 31 to prevent interference between the processing plate 51 and the seepage-proof sleeve 34. In this embodiment, the slider 61 is "L"-shaped, and the end of the receiving groove 312 near the first steel pile 12 is an opening so that the slider 61 can extend out.

[0042] See Figure 5 The lead screw 62 is rotatably installed in the receiving groove 312 and is horizontally positioned. The lead screw 62 passes through the slider 61 and is threadedly connected to the slider 61. Before placing the pile plate 1, the lead screw 62 can be rotated to drive the slider 61 to slide from one end to the other end in the receiving groove 312. During this process, the processing plate 51 can sweep away stones and other materials on the ground below the receiving rod 31, so that the seepage-proof sleeve 34 can fit more tightly with the ground, thereby improving the sealing between the seepage-proof sleeve 34 and the ground.

[0043] See Figure 6 The pressing part 7 includes: a cam 71, a limiting block 72, a rotating rod 73, a sleeve 74, a telescopic rod 75, a pressing plate 76, and a pressing spring 77. The rotating rod 73 is rotatably installed in the receiving groove 312 and is horizontally arranged. The rotating rod 73 passes through the slider 61, and the slider 61 can slide on the rotating rod 73. The rotating rod 73 is located below the lead screw 62. A limiting groove 731 is formed on the side wall of the rotating rod 73 along its length. The limiting block 72 is slidably arranged in the limiting groove 731 and slides along the length of the limiting groove 731. The cam 71 is sleeved on the rotating rod 73 and is fixedly connected to the limiting block 72. When the rotating rod 73 rotates, the cam 71 rotates with the rotating rod 73. When the rotating rod 73 does not rotate, the slider 61 can push the cam 71 to move on the rotating rod 73.

[0044] See Figure 6The sleeve 74 is fixed to the bottom of the slider 61. One end of the telescopic rod 75 extends and retracts inside the sleeve 74, and the other end is fixed to the top wall of the lower pressure plate 76. In this embodiment, a limiting plate can be provided at the end of the telescopic rod 75 inside the sleeve 74 to prevent the telescopic rod 75 from sliding out of the sleeve 74. One end of the pressure spring 77 is fixed to the top wall of the processing plate 51, and the other end is fixed to the lower pressure plate 76. The cam 71 is located above the lower pressure plate 76. Whenever slider 61 slides a distance equal to the length of treatment plate 51, slider 61 will stop sliding; at this time, rotate rotating rod 73, and cam 71 will rotate together with rotating rod 73. During the rotation of cam 71, the protruding part of cam 71 will press down on lower pressure plate 76; during the pressing process, lower pressure spring 77 will be compressed to provide downward pressure on treatment plate 51, so that treatment plate 51 can flatten the ground to a certain extent, so that the ground is relatively flat and in the same plane, so that the seepage prevention sleeve 34 can better fit tightly to the ground.

[0045] See Figure 5 The first drive unit 8 includes a first drive rod 81, a first driving gear 82, a first driven gear 83, and a plurality of first racks 84. The first drive rod 81 is rotatably mounted in the cavity 14 of the first steel pile 12 and is vertically arranged. The bottom end of the first drive rod 81 is coaxially fixed with the first driving gear 82. The end of the lead screw 62 near the first steel pile 12 passes through the cavity 14 of the first steel pile 12 and is coaxially fixed with the first driven gear 83. The first driving gear 82 meshes with the first driven gear 83.

[0046] See Figure 1 and Figure 2 The pile plate 1 has installation grooves 11 on both sides along the width direction. The first rack 84 is fixed in the installation groove 11 on the side of the pile plate 1 near the first steel pile 12 and is arranged in the vertical direction. There is a gap between each first rack 84.

[0047] See Figure 5 The second drive unit 9 includes a second drive rod 91, a second driving gear 92, a second driven gear 93, and a plurality of second racks 94. The second drive rod 91 is rotatably mounted in the cavity 14 of the second steel pile 13 and is vertically arranged. The bottom end of the second drive rod 91 is coaxially fixed with the second driving gear 92. The end of the rotating rod 73 near the second steel pile 13 passes through the cavity 14 of the second steel pile 13 and is coaxially fixed with the second driven gear 93. The second driving gear 92 meshes with the second driven gear 93.

[0048] See Figure 1 and Figure 2The second rack 94 is fixed in the mounting groove 11 on the side of the pile plate 1 near the second steel pile 13 and is arranged in the vertical direction. There is a gap between each second rack 94, and the first rack 84 and the second rack 94 are staggered in the vertical direction.

[0049] See Figure 7 The transmission unit 10 includes: a transmission rod 101, a linkage rod 102, a transmission belt 103, a transmission gear 104, a linkage gear 105, and a rotating gear 106. The transmission rod 101 and the linkage rod 102 are rotatably mounted in the cavity 14 and are horizontally arranged. The transmission belt 103 drives the transmission between the transmission rod 101 and the linkage rod 102 (the transmission belt 103 generally also includes two pulleys, which are respectively sleeved on the transmission rod 101 and the linkage rod 102). The transmission gear 104 is coaxially sleeved on the transmission rod 101. The first steel pile 12 and the second steel pile 13 have a clearance hole 16 on the side near the pile plate 1, and the clearance hole 16 is connected to the cavity 14. The transmission gear 104 passes through the clearance hole 16 and meshes with the first rack 84 and the second rack 94 located at the top of the pile plate 1.

[0050] See Figure 7 The linkage gear 105 is coaxially sleeved on the linkage rod 102, and the rotating gear 106 is coaxially sleeved on the first drive rod 81 and the second drive rod 91, and the linkage gear 105 meshes with the corresponding rotating gear 106.

[0051] When the pile plate 1 is inserted into the positioning groove 211, the second rack 94 at the bottom first meshes with the corresponding transmission gear 104 to drive the transmission gear 104 to rotate. The rotation of the transmission gear 104 corresponding to the second rack 94 will sequentially drive the rotation of the corresponding transmission rod 101, transmission belt 103, linkage rod 102, linkage gear 105, rotating gear 106, second drive rod 91, second driving gear 92, second driven gear 93 and rotating rod 73. The rotation of the rotating rod 73 will drive the cam 71 to rotate, so that the cam 71 can press down the lower pressure plate 76 without manual driving of the rotating rod 73. When the second rack 94 at the bottom is about to separate from the corresponding transmission gear 104, the first rack 84 at the bottom will mesh with the corresponding transmission gear 104. After the second rack 94 at the bottom is about to separate from the corresponding transmission gear 104, the first rack 84 at the bottom will mesh with the corresponding transmission gear 104 to drive the transmission gear 104 to rotate. The rotation of the transmission gear 104 corresponding to the first rack 84 will sequentially drive the rotation of the corresponding transmission rod 101, transmission belt 103, linkage rod 102, linkage gear 105, rotating gear 106, first drive rod 81, first driving gear 82, first driven gear 83 and lead screw 62. The rotation of lead screw 62 will drive the slider 61 to move, so that the processing plate 51 can be pushed and swept without manual driving of lead screw 62.

[0052] The working principle of a foundation pit support pile of this application is as follows: After the pile plate 1 is about to be inserted, the pile plate 1 comes into contact with the contact plate 41, and then the contact plate 41 is pressed down. Through the setting of the connecting rod 42, the compression plate 43 is pressed down. During this process, the water in the water storage chamber 311 will be pressed into the expansion bag 32 through the connecting pipe 33. The expansion bag 32 continuously drives the seepage prevention sleeve 34 to expand and grow until the seepage prevention sleeve 34 is pressed tightly against the ground to form a seal, so that the water outside the foundation pit is not easy to flow into the foundation pit from the bottom of the receiving rod 31.

[0053] This application also provides a method for foundation pit support using foundation pit support piles.

[0054] A method for supporting a foundation pit using retaining piles includes the following steps: S1: Drive the first steel pile 12 and the second steel pile 13 into the ground; S2: Install the seepage prevention component between the first steel pile 12 and the second steel pile 13; S3: Hoist the pile plate 1 between the first steel pile 12 and the second steel pile 13; at the same time, the seepage prevention component will be tightly attached to the ground; S4: Use a diagonal bracing device to provide diagonal support for pile plate 1.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A type of foundation pit support pile, characterized in that, include: The pile plate (1) and the first steel pile (12) and the second steel pile (13) having cavities (14) are provided with positioning components (2) on the first steel pile (12) and the second steel pile (13). The pile plate (1) is disposed between the two sets of positioning components (2). A sealing gasket (17) is fixedly disposed on the pile plate (1). An anti-seepage component is disposed between the first steel pile (12) and the second steel pile (13). The seepage prevention component includes: an extrusion part (4) and a seepage prevention part (3), wherein the seepage prevention part (3) is disposed between the first steel pile (12) and the second steel pile (13), and the extrusion part (4) is disposed on the seepage prevention part (3) and abuts against the pile plate (1); The seepage prevention part (3) includes: a receiving rod (31), an expansion bag (32), a connecting pipe (33), and a seepage prevention sleeve (34). The first steel pile (12) and the second steel pile (13) are provided with a relief groove (15) that communicates with the cavity (14). The end of the receiving rod (31) passes through the relief groove (15) and extends into the cavity (14). The expansion bag (32) is fixed to the bottom of the receiving rod (31), and the seepage prevention sleeve (34) is fixedly sleeved on the expansion bag (32). The receiving rod (31) is provided with a water storage cavity (311). One end of the connecting pipe (33) is connected to the expansion bag (32), and the other end is connected to the water storage cavity (311). The squeezing part (4) is provided on the receiving rod (31). The extrusion part (4) includes: a contact plate (41), a connecting rod (42), an extrusion plate (43), a return spring (44), and a sealing sleeve (45). The extrusion plate (43) is slidably disposed in the water storage cavity (311). One end of the connecting rod (42) is fixed to the extrusion plate (43), and the other end extends outward through the receiving rod (31) and is fixed to the contact plate (41). The pile plate (1) abuts against the contact plate (41). The return spring (44) is fixed between the extrusion plate (43) and the inner wall of the water storage cavity (311). The sealing sleeve (45) is fixedly sleeved on the peripheral wall of the extrusion plate (43) and contacts the inner wall of the water storage cavity (311).

2. The foundation pit support pile according to claim 1, characterized in that, A pretreatment assembly is provided between the receiving rod (31) and the first steel pile (12) and the second steel pile (13). The pretreatment assembly includes a treatment section (5), which includes a treatment plate (51) connected to the receiving rod (31).

3. The foundation pit support pile according to claim 2, characterized in that, The pretreatment component further includes a moving part (6), which includes a slider (61) and a lead screw (62). The bottom of the receiving rod (31) is provided with a receiving groove (312). The slider (61) is slidably disposed in the receiving groove (312). The processing plate (51) is fixedly connected to the slider (61) by a fixing rod. The lead screw (62) is rotatably installed in the receiving groove (312). The lead screw (62) passes through the slider (61) and is threadedly connected to the slider (61).

4. The foundation pit support pile according to claim 3, characterized in that, The pretreatment assembly further includes a pressing part (7), which includes a cam (71), a limiting block (72), a rotating rod (73), a sleeve (74), a telescopic rod (75), a pressing plate (76), and a pressing spring (77). The rotating rod (73) is rotatably mounted in the receiving groove (312) and passes through the slider (61). A limiting groove (731) is provided on the rotating rod (73), and the limiting block (72) is slidably disposed on the receiving groove (61). Inside the limiting groove (731), the cam (71) is sleeved on the rotating rod (73) and fixed to the limiting block (72). The cam (71) is in contact with the slider (61). One end of the downward pressure spring (77) is fixed to the processing plate (51) and the other end is fixed to the downward pressure plate (76). The sleeve (74) is fixed to the slider (61). One end of the telescopic rod (75) extends and retracts inside the sleeve (74) and the other end is fixed to the downward pressure plate (76).

5. The foundation pit support pile according to claim 4, characterized in that, The pretreatment assembly further includes a first drive unit (8), a second drive unit (9), and a transmission unit (10). The first drive unit (8) includes a first drive rod (81), a first driving gear (82), a first driven gear (83), and a plurality of first racks (84). The first drive rod (81) is rotatably mounted in the cavity (14) of the first steel pile (12) and is coaxially fixed with the first driving gear (82). One end of the lead screw (62) passes through the cavity (14) of the first steel pile (12) and is coaxially fixed with the first driven gear (83). The first driving gear (82) meshes with the first driven gear (83). The first rack (84) is fixed with the pile plate (1). The transmission unit (10) is disposed between the first rack (84) and the first drive rod (81) and between the pile plate (1) and the second drive unit (9).

6. The foundation pit support pile according to claim 5, characterized in that, The pretreatment assembly further includes a second drive unit (9), which includes a second drive rod (91), a second drive gear (92), a second driven gear (93), and a plurality of second racks (94). The second drive rod (91) is rotatably mounted in the cavity (14) on the second steel pile (13) and is coaxially fixed with the second drive gear (92). One end of the rotating rod (73) passes through the cavity (14) on the second steel pile (13) and is coaxially fixed with the second driven gear (93). The second drive gear (92) meshes with the second driven gear (93). The second rack (94) is fixed with the pile plate (1). The transmission unit (10) is disposed between any of the first racks (84) and the first drive rod (81) and between the second racks (94) and the second drive rod (91).

7. The foundation pit support pile according to claim 6, characterized in that, Each of the transmission parts (10) includes: a transmission rod (101), a linkage rod (102), a transmission belt (103), a transmission gear (104), a linkage gear (105), and a rotating gear (106). Both the first steel pile (12) and the second steel pile (13) have clearance holes (16) for placing the transmission gear (104). The transmission rod (101) and the linkage rod (102) are rotatably mounted within the cavity (14), and the transmission gear (104) is coaxially sleeved on the transmission rod (101). The transmission gear (104) and the linkage gear (106) are... The first rack (84) and the second rack (94) mesh with each other. The linkage gear (105) is coaxially sleeved on the linkage rod (102). The rotating gear (106) of the first transmission part (10) is coaxially sleeved on the first drive rod (81). The rotating gear (106) of the second transmission part (10) is coaxially sleeved on the second drive rod (91). The rotating gear (106) meshes with the corresponding linkage gear (105). The transmission belt (103) drives the linkage rod (102) and the transmission rod (101).

8. The foundation pit support method based on the foundation pit support piles according to claim 1, characterized in that, Includes the following steps: S1: Drive the first steel pile (12) and the second steel pile (13) into the ground; S2: Install the seepage prevention component between the first steel pile (12) and the second steel pile (13); S3: Hoist the pile sheet (1) between the first steel pile (12) and the second steel pile (13); at the same time, the anti-seepage component will be in close contact with the ground; S4: Use a diagonal support device to provide diagonal support for the pile plate (1).

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