Layered and segmented supporting structure for deep foundation pit in water-rich area

Abstract

The utility model discloses a layered and segmented supporting structure for a deep foundation pit in a water-rich area, and belongs to the technical field of foundation pit supporting. The device comprises a plurality of supporting plates, the supporting plates are arranged on the inner wall of a foundation pit, the same connecting plate is installed on every two adjacent supporting plates through screws, and the supporting plates are fixed to the inner wall of the foundation pit through reinforcing piles. By arranging the multiple supporting plates, a worker can splice the multiple supporting plates through the connecting plates and the screws on the construction site according to the area of the side wall, needing to be supported, of the foundation pit, and the supporting plates can be stably fixed to the side wall of the foundation pit or a foundation pit forming platform through the reinforcing piles; the two adjacent supporting plates are connected through the connecting plates, so that the two adjacent supporting plates can be mutually restricted to form a mutual supporting structure.

Description

Technical Field

[0001] This application relates to the field of foundation pit support technology, and in particular to a layered and segmented support structure for deep foundation pits in water-rich areas. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the foundation elevation and foundation plane dimensions. When excavating an excavation pit in a water-rich area, the soil of the pit wall is often not stable enough, so it is necessary to support the pit to ensure the safety of underground structure construction and the surrounding environment.

[0003] Patent CN212926111U discloses a foundation pit slope support system suitable for foundation pits with multiple slopes and support platforms. It protects the foundation pit by setting up a protective net to prevent soil slippage, and a first clamping plate tightens the protective net. Fixing bolts pass through a second support plate, the first support plate, and the protective net, connecting to the foundation pit via threads. The fixing bolts press and fix the first and second support plates onto the slope of the foundation pit, thus supporting the pit. However, the slope and area of ​​different foundation pits vary, and manufacturing the first support plate as a single piece is difficult and cannot be adapted to foundation pit slopes with various gradients. Utility Model Content

[0004] The purpose of this application is to address the aforementioned problems in the prior art by proposing a layered and segmented support structure for deep foundation pits in water-rich areas.

[0005] This application can be achieved through the following technical solution: a layered and segmented support structure for deep foundation pits in water-rich areas, comprising multiple support plates, wherein the support plates are disposed on the inner wall of the foundation pit, and the same connecting plate is installed on adjacent support plates by screws, and the support plates are fixed to the inner wall of the foundation pit by reinforcing piles.

[0006] In the above technical solution, by setting up multiple support plates, workers can splice multiple support plates on the construction site using connecting plates and screws according to the area of ​​the side wall that needs to be supported in the foundation pit. The reinforcement piles can stably fix the support plates on the side wall of the foundation pit or the platform formed by the foundation pit. By connecting two adjacent support plates with connecting plates, the two adjacent support plates can restrain each other and form a mutually supportive structure.

[0007] Furthermore, the support plate is provided with fixing holes for the reinforcement pile to pass through. The reinforcement pile is formed with an outer edge, which can abut against the surface of the support plate away from the foundation pit. The reinforcement pile is inserted into the soil layer, and one end of the reinforcement pile in the length direction is open. Several grout outlets are provided through the side wall of the reinforcement pile.

[0008] In the above technical solution, workers can inject concrete grout into the inside of the reinforcing pile through the opening. The concrete grout can flow through the outlet to the space between the reinforcing pile and the soil layer, thereby improving the stability of the reinforcing pile installation.

[0009] Furthermore, the outer wall of the reinforced pile along its length is formed with threads.

[0010] In the above technical solution, the thread makes it easier for workers to screw the reinforcing pile into the soil.

[0011] Furthermore, it also includes several insert rods inserted into the thick sidewall of the reinforced pile, the insert rods being pushed into the inner wall of the pit by a pushing component.

[0012] In the above technical solution, the stability of the reinforcement pile is further improved by setting the insertion rod.

[0013] Furthermore, the pushing assembly includes a bidirectional lead screw, a driver for driving the bidirectional lead screw to rotate, two sliding blocks threadedly connected to the bidirectional lead screw, a rotating rod hinged to the sliding blocks, and a sliding plate hinged to the end of the rotating rod away from the sliding blocks. The two sliding blocks are respectively threadedly connected to the two ends of the bidirectional lead screw with different thread directions. The rotation of the bidirectional lead screw can cause the sliding plate to slide close to the inner wall of the reinforced pile, and the sliding plate can push the insertion rod to slide and protrude from the outer wall of the reinforced pile.

[0014] In the above technical solution, the driver drives the bidirectional lead screw to rotate, and the rotation of the bidirectional lead screw can drive the sliding plate to slide horizontally in a straight line, so that the sliding plate can push the insertion rod into the soil during the sliding process.

[0015] Furthermore, the bidirectional lead screw is mounted on a fixed frame, and the driver is installed on the fixed frame. A positioning groove is opened at one end of the reinforcing pile near its own opening. The positioning groove is used for the fixed frame to be embedded so that the axis of the bidirectional lead screw can coincide with the axis of the reinforcing pile.

[0016] In the above technical solution, by setting a positioning groove, the positioning groove is used to position the fixing frame. When the fixing frame is embedded in the positioning groove, the axis of the bidirectional screw can coincide with the axis of the reinforcing pile. Before the worker inserts the bidirectional screw into the reinforcing pile, he only needs to observe the position of the sliding plate relative to the insertion rod with the naked eye, then rotate and adjust the position of the fixing frame, and then insert the fixing frame into the reinforcing pile.

[0017] Furthermore, a handle is installed on the mounting bracket, and the handle is located on the side of the mounting bracket closer to the driver.

[0018] In the above technical solution, the handle makes it easier for workers to pick up the fixed frame.

[0019] Furthermore, the insertion rod has an opening at one end near the axis of the reinforced pile, and several grout leakage ports are provided on the side wall of the insertion rod.

[0020] In the above technical solution, by opening a grout leakage port through the side wall of the insertion rod, when concrete grout is injected into the reinforced pile, the concrete grout can flow through the grout leakage port to the space between the insertion rod and the soil layer, thereby further improving the stability of the reinforced pile fixation.

[0021] In summary, this application has the following technical advantages: This application includes multiple support plates, which are disposed on the inner wall of the foundation pit. Adjacent support plates are fitted with the same connecting plate via screws. The support plates are fixed to the inner wall of the foundation pit by reinforcing piles. By setting multiple support plates, workers can splice the support plates on-site using connecting plates and screws, according to the area of ​​the sidewalls that need support in the foundation pit. The reinforcing piles ensure that the support plates are stably fixed to the sidewalls of the foundation pit or the formed platform of the foundation pit. By connecting adjacent support plates with connecting plates, the adjacent support plates can mutually restrain each other, forming a mutually supporting structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application;

[0023] Figure 2 This is a schematic diagram showing the location of the fixing holes in this application;

[0024] Figure 3 This is a schematic diagram showing the location of the reinforcing piles in this application;

[0025] Figure 4 This is a schematic diagram of the structure of the driving component in this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Support plate; 11. Fixing hole; 2. Foundation pit; 21. Slope; 22. Platform; 3. Screw; 4. Connecting plate; 5. Reinforcing pile; 51. Outer edge; 52. Grout outlet; 53. Positioning groove; 6. Thread; 7. Insert rod; 71. Grout leakage outlet; 8. Pushing assembly; 81. Two-way lead screw; 82. Driver; 83. Sliding block; 84. Rotating rod; 85. Sliding plate; 9. Fixing frame; 91. Guide rod; 10. Handle. Detailed Implementation

[0028] Reference Figure 1 and Figure 2One embodiment of this application provides a layered and segmented support structure for deep foundation pits in water-rich areas, suitable for foundation pits 2 with multiple slopes 21 and platforms 22. It includes multiple support plates 1, which can be placed on platforms 22 or slopes 21. Multiple support plates 1 on platforms 22 are located on the same horizontal plane, and multiple support plates 1 on slopes 21 are located on the same inclined plane. Adjacent support plates 1 are connected to the same connecting plate 4 by screws 3. Each support plate 1 has eight threaded holes through it along its own thickness direction. Before the screws 3 are installed on the support plate 1, the support plate 1 does not need to be drilled on site. Each support plate 1 has a fixing hole 11 through it along its own thickness direction. A reinforcing pile 5 is opened at one end axially. The end of the reinforcing pile 5 near its opening is formed with an outer edge 51. The reinforcing pile 5 can be inserted into the soil layer through the fixing hole 11 until the outer edge 51 can abut against the surface of the support plate 1 away from the side wall of the foundation pit 2.

[0029] Reference Figure 3 The outer wall of the reinforcing pile 5 is formed with threads 6, which facilitates the insertion of the reinforcing pile 5 into the soil layer. Several grout outlets 52 are opened on the thick side wall of the reinforcing pile 5, allowing workers to inject concrete grout into the reinforcing pile 5. The concrete grout flows through the grout outlets 52 to the space between the reinforcing pile 5 and the soil layer, thereby making the position of the reinforcing pile 5 more stable. Multiple through holes are opened on the thick side wall of the reinforcing pile 5 for inserting a rod 7. The end of the rod 7 opposite to the axis of the reinforcing pile 5 and the end of the reinforcing pile 5 opposite to its own opening are both formed with a cone, which facilitates the insertion of the reinforcing pile 5 and the rod 7 into the soil layer. The insert rod 7 is hollow inside and has an opening at one end along its length. The opening of the insert rod 7 faces the axis of the reinforced pile 5. A grout leakage port 71 is provided on the thick side wall of the insert rod 7. The concrete grout entering the reinforced pile 5 can enter the insert rod 7 through the opening and flow through the grout leakage port 71 to the space between the insert rod 7 and the soil layer, making the reinforced pile 5 more firmly fixed.

[0030] Reference Figure 3 and Figure 4The reinforcing pile 5 has four rows of through holes, each row of through holes including three through holes. The through holes are used for inserting the rod 7. The three through holes are arranged along the length of the reinforcing pile 5. The rod 7 is inserted into the soil by being pushed by a pushing component 8. The pushing component 8 includes a bidirectional screw 81. The two ends of the bidirectional screw 81 are rotatably mounted on a fixed frame 9 in the length direction. A driver 82 for driving the bidirectional screw 81 to rotate is installed on the fixed frame 9. The driver 82 can be a motor or other driving device that can drive the bidirectional screw 81 to rotate. Two sliding blocks 83 are threadedly connected to the bidirectional lead screw 81. Two guide rods 91 are formed on the fixing frame 9. The length direction of the guide rods 91 is consistent with the length direction of the bidirectional lead screw 81. The guide rods 91 are slidably connected to the two sliding blocks 83. The two sliding blocks 83 are respectively threaded to the two ends of the bidirectional lead screw 81 with opposite directions of rotation. Two rotating rods 84 are hinged on the sliding blocks 83. The two rotating rods 84 are arranged opposite to each other. The ends of the two rotating rods 84 installed on different sliding blocks 83 are hinged to the same sliding plate 85 away from the sliding blocks 83. There are two sliding plates 85. The rotation of the bidirectional lead screw 81 can drive the two sliding blocks 83 to move closer to each other or further away from each other along the length direction of the bidirectional lead screw 81. The sliding of the sliding blocks 83 can drive the sliding plates 85 to move closer to or further away from the axis of the reinforced pile 5. The sliding plates 85 can contact the insertion rod 7 and push the insertion rod 7 into the soil layer.

[0031] Reference Figure 3 and 4 Two sliding plates 85 can simultaneously push two rows of insert rods 7 into the soil. A positioning groove 53 is provided on the end face of the reinforcing pile 5 near its opening. The positioning groove 53 is circular. The fixing frame 9 is formed with a circular plate. The positioning groove 53 is used for embedding the circular plate to position the fixing frame 9 so that the axis of the bidirectional screw 81 coincides with the axis of the reinforcing pile 5. When the worker inserts the fixing frame 9 into the reinforcing pile 5, they only need to visually rotate the reinforcing pile 5 so that the two sliding plates 85 are aligned with the two rows of insert rods 7, and then insert the fixing frame 9 into the reinforcing pile 5. A handle 10 is installed on the positioning plate, located on the side of the positioning plate near the driver 82, and the handle 10 is exposed outside the reinforcing pile 5 when the fixing frame 9 is inserted. The handle 10 makes it convenient for workers to lift the fixing frame 9.

[0032] The working principle of this embodiment is as follows: The support plate 1 is placed on the side wall of the foundation pit 2 that needs to be supported. Then, the reinforcing pile 5 is inserted into the fixing hole 11 and the outer edge 51 is pressed against the surface of the support plate 1 away from the side wall of the foundation pit 2. The workers first compare the position of the sliding plate 85 with the position of the insertion rod 7. Then, the circular plate is embedded in the positioning groove 53. At this time, the axis of the bidirectional screw 81 can coincide with the axis of the reinforcing pile 5. Then, the driver 82 is started to drive the bidirectional screw 81 to rotate. The sliding plate 85 can push the insertion rod 7 to slide linearly and insert it into the soil layer. Then, concrete grout is injected into the reinforcing pile 5. The concrete grout can flow through the grout outlet 52 to the gap between the reinforcing pile 5 and the soil layer.

[0033] 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 layered and segmented support structure for deep foundation pits in water-rich areas, characterized in that, It includes multiple support plates (1), the support plates (1) are set on the inner wall of the foundation pit (2), and the same connecting plate (4) is installed on two adjacent support plates (1) by screws (3). The support plates (1) are fixed to the inner wall of the foundation pit (2) by reinforcing piles (5).

2. The layered and segmented support structure for deep foundation pits in water-rich areas according to claim 1, characterized in that, The support plate (1) has a fixing hole (11) for the reinforcing pile (5) to pass through. The reinforcing pile (5) has an outer edge (51) that can abut against the surface of the support plate (1) away from the foundation pit (2). The reinforcing pile (5) is inserted into the soil layer. One end of the reinforcing pile (5) is open in the length direction. Several grout outlets (52) are opened through the side wall of the reinforcing pile (5).

3. The layered and segmented support structure for deep foundation pits in water-rich areas according to claim 1, characterized in that, The reinforcing pile (5) has threads (6) formed on its outer wall along its length.

4. The layered and segmented support structure for deep foundation pits in water-rich areas according to claim 2, characterized in that, It also includes several insert rods (7) that penetrate the sidewall of the reinforced pile (5) and are pushed into the inner wall of the pit (2) by a pushing component (8).

5. A layered and segmented support structure for deep foundation pits in water-rich areas according to claim 4, characterized in that, The pushing assembly (8) includes a bidirectional lead screw (81), a driver (82) for driving the bidirectional lead screw (81) to rotate, two sliding blocks (83) threadedly connected to the bidirectional lead screw (81), a rotating rod (84) hinged to the sliding block (83), and a sliding plate (85) hinged to the end of the rotating rod (84) away from the sliding block (83). The two sliding blocks (83) are respectively threadedly connected to the two ends of the bidirectional lead screw (81) with different thread directions. The rotation of the bidirectional lead screw (81) can cause the sliding plate (85) to slide close to the inner wall of the reinforcing pile (5). The sliding plate (85) can push the insertion rod (7) to slide and protrude from the outer wall of the reinforcing pile (5).

6. A layered and segmented support structure for deep foundation pits in water-rich areas according to claim 5, characterized in that, The bidirectional lead screw (81) is mounted on a fixed frame (9), and the driver (82) is mounted on the fixed frame (9). A positioning groove (53) is opened at one end of the reinforcing pile (5) near its opening. The positioning groove (53) is used for the fixed frame (9) to be embedded so that the axis of the bidirectional lead screw (81) can coincide with the axis of the reinforcing pile (5).

7. A layered and segmented support structure for deep foundation pits in water-rich areas according to claim 6, characterized in that, A handle (10) is installed on the mounting bracket (9), and the handle (10) is located on the side of the mounting bracket (9) near the driver (82).

8. A layered and segmented support structure for deep foundation pits in water-rich areas according to claim 4, characterized in that, The insertion rod (7) is opened at one end near the axis of the reinforcing pile (5), and several grout leakage ports (71) are opened on the side wall of the insertion rod (7).

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