Municipal road in-hole deep composite foundation reinforcing structure

Abstract

The utility model relates to a municipal road in-hole deep composite foundation reinforcing structure which comprises a grouting steel pipe, the grouting steel pipe comprises a plurality of branch pipes and a bottom pipe, the bottom pipe is located at the bottom of the grouting steel pipe, a plurality of liquid outlets are formed in the peripheral faces of the bottom pipe and the branch pipes, top grooves are formed in the tops of the branch pipes and the bottom pipe, and the liquid outlets are communicated with the top grooves. Fixing frames are fixedly connected to the bottoms of the branch pipes, the interiors of the branch pipes communicate with the corresponding fixing frames, and the fixing frames penetrate through the corresponding top grooves in a sliding mode. The utility model relates to the technical field of municipal roads. When a worker assembles a grouting steel pipe, a pile driver clamps a bottom pipe and inserts the bottom pipe into the ground, then the pile driver clamps a branch pipe, a fixing frame is aligned with a top groove to be inserted, the branch pipe is driven to move downwards, a wedge-shaped block is automatically inserted into a corresponding clamping groove, and therefore installation of the branch pipe is rapidly completed, the operation is repeated, and the construction efficiency is greatly improved. The multiple branch pipes and the bottom pipe are assembled into the grouting steel pipe, the assembling efficiency of the grouting steel pipe is improved, and operation of workers is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of municipal roads, and in particular to a deep composite foundation reinforcement structure for municipal roads with internal boreholes. Background Technology

[0002] The part of a building buried below ground level is called the foundation, and the soil layer that bears the loads transmitted by the foundation is called the subsoil. In architecture, foundation treatment is extremely important; the foundation plays an irreplaceable role in the stability of the superstructure. If the foundation of a building is inadequate, the superstructure is likely to collapse. The main purpose of foundation treatment is to improve the soil conditions using various methods.

[0003] For example, Chinese patent CN214116584U discloses a pre-embedded steel pipe grouting composite foundation reinforcement structure, including a grouting steel pipe. The grouting steel pipe includes several coaxially connected branch pipes, and each branch pipe in the middle section of the grouting steel pipe has a spray hole on its wall. A connecting assembly is provided between two adjacent branch pipes, and the connecting assembly includes a connecting ring between the two adjacent branch pipes. The two branch pipes on the upper and lower sides of the connecting ring are threaded onto the outer wall of the connecting ring. Compared with the prior art, this solution changes the structure of the grouting steel pipe, allowing construction personnel to adjust the length of the grouting steel pipe according to different burial depths of hard soil layers, thus facilitating the pipe laying operation.

[0004] This patent allows for adjustment of the length of the grouting steel pipe to adapt to different geological conditions. However, the two adjacent branch pipes are connected by threads, requiring workers to align them and rotate them relative to each other. Due to the smooth outer surface and heavy weight of the branch pipes, assembling them is time-consuming and laborious, making it inconvenient for workers to use. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a deep composite foundation reinforcement structure for municipal roads, so as to solve the technical problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A deep composite foundation reinforcement structure for municipal roads includes a grouting steel pipe, which comprises several branch pipes and a bottom pipe. The bottom pipe is located at the bottom of the grouting steel pipe. Several drainage ports are provided on the outer circumference of both the bottom pipe and the branch pipes. Top grooves are provided on the top of both the branch pipes and the bottom pipe. A fixing frame is fixedly connected to the bottom of the branch pipe, and the interior of the branch pipe communicates with the corresponding fixing frame. The fixing frame slides through the corresponding top groove. Limiting plates are fixedly connected to the upper part of both the branch pipe and the bottom pipe. The bottom surface of the fixing frame is in contact with the top surface of the corresponding limiting plate. An avoidance opening is provided on the top of the limiting plate inside the fixing frame. A locking part is provided on the outside of the fixing frame.

[0008] Furthermore, the locking part includes four fixing rods fixedly connected to the inner wall of the branch pipe or the bottom pipe. A slider is slidably connected to the outer surface of the fixing rod. A spring is fixedly connected between the slider and the inner wall of the branch pipe or the bottom pipe. A wedge block is fixedly connected to the side of the slider away from the corresponding spring. The top surface of the wedge block is inclined. Several slots are opened on the outer wall of the fixing frame. When the spring is in its natural state, the wedge block is partially inserted into the corresponding slot.

[0009] Furthermore, the orthographic projection of the cross-section of the fixed frame is set as a square.

[0010] Furthermore, the outer wall of the fixed frame has several connecting ports located above the card slot.

[0011] Furthermore, a conical head is fixedly connected to the bottom of the bottom tube.

[0012] Furthermore, a sealing ring is fixedly connected to the bottom of the branch pipe, and the bottom surface of the sealing ring is in contact with the top surface of the corresponding branch pipe or bottom pipe.

[0013] In summary, this utility model has at least one of the following beneficial technical effects:

[0014] 1. This is a deep composite foundation reinforcement structure for municipal roads with internal boreholes. When assembling the grouting steel pipes, the pile driver clamps the bottom pipe and inserts it into the ground. Then, the pile driver clamps the branch pipe, aligns the fixing frame with the top groove, and inserts it, causing the branch pipe to move downward. The wedge block automatically inserts into the corresponding slot, thus quickly completing the installation of the branch pipe. This operation is repeated to assemble several branch pipes and the bottom pipe into a grouting steel pipe, improving the assembly efficiency of the grouting steel pipe and facilitating the work of the staff.

[0015] 2. This deep composite foundation reinforcement structure for municipal roads, through the opening of the connecting port, allows the concrete to move through the connecting port to the area above the limiting plate during concrete pouring. Therefore, after the concrete solidifies, it restricts the wedge block from moving away from the slot, thereby improving the connection strength between two adjacent branch pipes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional view of the grouting steel pipe in this embodiment;

[0018] Figure 2 This is a front view of the branch pipe in this embodiment;

[0019] Figure 3 This is a bottom view of the branch pipe in this embodiment;

[0020] Figure 4 This is a partial orthogonal sectional view of the grouting steel pipe in this embodiment.

[0021] In the diagram, 1. Grouting steel pipe; 2. Branch pipe; 3. Bottom pipe; 4. Drain outlet; 5. Top groove; 6. Fixing frame; 7. Limiting plate; 8. Clearance opening; 9. Locking part; 91. Fixing rod; 92. Slider; 93. Spring; 94. Wedge block; 95. Slot; 10. Connecting port; 11. Conical head; 12. Sealing ring. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example:

[0024] Reference Figures 1 to 4 This utility model discloses a deep composite foundation reinforcement structure for municipal roads, comprising a grouting steel pipe 1, which includes several branch pipes 2 and a bottom pipe 3. The bottom pipe 3 is located at the bottom of the grouting steel pipe 1. Several drainage ports 4 are provided on the outer circumference of both the bottom pipe 3 and the branch pipes 2. Top grooves 5 are provided on the top of both the branch pipes 2 and the bottom pipe 3. A fixing frame 6 is fixedly connected to the bottom of the branch pipe 2, and the interior of the branch pipe 2 communicates with the corresponding fixing frame 6. The fixing frame 6 slides through the corresponding top groove 5. Limiting plates 7 are fixedly connected to the upper part of both the branch pipes 2 and the bottom pipe 3. The bottom surface of the fixing frame 6 is in contact with the top surface of the corresponding limiting plate 7. An avoidance opening 8 is provided on the top of the limiting plate 7 inside the fixing frame 6. A locking part 9 is provided on the outside of the fixing frame 6.

[0025] In this embodiment, during the installation of this device, the bottom pipe 3 is clamped by a pile driver and then inserted into the ground so that the top surface of the bottom pipe 3 is above the ground. Then, the pile driver clamps a branch pipe 2 and aligns the fixing frame 6 of the branch pipe 2 with the corresponding top groove 5. The branch pipe 2 is then pressed downwards until the fixing frame 6 is inserted into the top groove 5, until the bottom surface of the fixing frame 6 is in contact with the top surface of the limiting plate 7. At this point, the fixing frame 6 is fixed to the bottom pipe 3 by the locking part 9, thus fixing the branch pipe 2 to the bottom pipe 3. The pile driver continues to work, inserting the branch pipe 2 into the ground. Then, the pile driver clamps another branch pipe 2 and repeats the above operation to complete the assembly of the grouting steel pipe 1 and insert the grouting steel pipe 1 into the ground.

[0026] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the locking part 9 includes four fixing rods 91 fixedly connected to the inner wall of the branch pipe 2 or the bottom pipe 3. A slider 92 is slidably connected to the outer surface of the fixing rod 91. A spring 93 is fixedly connected between the slider 92 and the inner wall of the branch pipe 2 or the bottom pipe 3. A wedge block 94 is fixedly connected to the side of the slider 92 away from the corresponding spring 93. The top surface of the wedge block 94 is inclined. Several slots 95 are opened on the outer wall of the fixing frame 6. When the spring 93 is in the natural state, the wedge block 94 is partially inserted into the corresponding slot 95.

[0027] In this embodiment, after the fixed frame 6 is inserted into the top groove 5, the fixed frame 6 contacts the wedge block 94 and pushes the wedge block 94 to move, compressing the spring 93 until the fixed frame 6 is in contact with the top surface of the limiting plate 7. At this time, the wedge block 94 is exactly at the same height as the slot 95. Under the restoring force of the spring 93, the wedge block 94 is inserted into the corresponding slot 95. At this time, the fixed frame 6 is restricted by the limiting plate 7 and cannot move downwards. The bottom wall of the slot 95 is in contact with the bottom surface of the wedge block 94. The bottom surface of the wedge block 94 is horizontal, so the fixed frame 6 cannot move upwards either, thus fixing the fixed frame 6 and therefore fixing the branch pipe 2.

[0028] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the orthographic projection of the cross-section of the fixed frame 6 is set as a square.

[0029] In this embodiment, since the orthographic projection of the cross section of the fixed frame 6 is a square, when assembling the branch pipe 2, it is only necessary to insert the fixed frame 6 into the top groove 5 to ensure that the wedge block 94 and the corresponding slot 95 are in the correct position. That is, when the fixed frame 6 and the limiting plate 7 are in contact, the wedge block 94 can be inserted into the corresponding slot 95.

[0030] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the outer wall of the fixed frame 6 has several connecting ports 10 located above the slot 95.

[0031] In this embodiment, by opening the connecting port 10, when pouring concrete, the concrete will move through the connecting port 10 to the position above the limiting plate 7. Therefore, after the concrete solidifies, it restricts the wedge block 94 from moving away from the slot 95, thereby improving the connection strength between two adjacent branch pipes 2.

[0032] In a further preferred embodiment of this utility model, such as Figure 1 As shown, a conical head 11 is fixedly connected to the bottom of the bottom tube 3.

[0033] In this embodiment, the tapered head 11 is used to reduce the resistance of the bottom pipe 3 when it is inserted into the ground.

[0034] In a further preferred embodiment of this utility model, such as Figure 4 As shown, a sealing ring 12 is fixedly connected to the bottom of the branch pipe 2, and the bottom surface of the sealing ring 12 is in contact with the top surface of the corresponding branch pipe 2 or bottom pipe 3.

[0035] In this embodiment, the sealing ring 12 is used to seal the gap between two adjacent branch pipes 2 or between branch pipe 2 and bottom pipe 3, to prevent cement from passing through the connecting port 10 and top groove 5 and being discharged from the gap between two adjacent branch pipes 2 or between branch pipe 2 and bottom pipe 3.

[0036] After the bottom pipe 3 and several branch pipes 2 are assembled and inserted into the ground, concrete is added to the top groove 5 at the top of the uppermost branch pipe 2. The concrete fills the several branch pipes 2 and the bottom pipe 3, and moves to the outside of the grouting steel pipe 1 through the drain port 4, combining with the soil layer to achieve the purpose of reinforcing the weak foundation of the building.

[0037] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A deep composite foundation reinforcement structure for municipal roads, comprising grouting steel pipes (1), characterized in that: The grouting steel pipe (1) includes several branch pipes (2) and a bottom pipe (3). The bottom pipe (3) is located at the bottom of the grouting steel pipe (1). Several drainage ports (4) are opened on the outer circumference of the bottom pipe (3) and the branch pipes (2). Top grooves (5) are opened on the top of the branch pipes (2) and the bottom pipe (3). A fixed frame (6) is fixedly connected to the bottom of the branch pipe (2), and the inside of the branch pipe (2) is connected to the corresponding fixed frame (6). The fixed frame (6) slides through the corresponding top groove (5). Limiting plates (7) are fixedly connected to the upper part of the branch pipes (2) and the bottom pipe (3). The bottom surface of the fixed frame (6) is in contact with the top surface of the corresponding limiting plate (7). An avoidance opening (8) is opened at the top of the limiting plate (7) inside the fixed frame (6). A locking part (9) is provided on the outside of the fixed frame (6).

2. The deep composite foundation reinforcement structure for municipal roads according to claim 1, characterized in that: The locking part (9) includes four fixing rods (91) fixedly connected to the inner wall of the branch pipe (2) or the bottom pipe (3). A slider (92) is slidably connected to the outer surface of the fixing rod (91). A spring (93) is fixedly connected between the slider (92) and the inner wall of the branch pipe (2) or the bottom pipe (3). A wedge block (94) is fixedly connected to the side of the slider (92) away from the corresponding spring (93). The top surface of the wedge block (94) is inclined. Several slots (95) are opened on the outer wall of the fixing frame (6). When the spring (93) is in the natural state, the wedge block (94) is partially inserted into the corresponding slot (95).

3. The deep composite foundation reinforcement structure for municipal roads according to claim 2, characterized in that: The orthographic projection of the cross section of the fixed frame (6) is set as a square.

4. The deep composite foundation reinforcement structure for municipal roads according to claim 3, characterized in that: The outer wall of the fixed frame (6) is provided with several communication ports (10) located above the slot (95).

5. The deep composite foundation reinforcement structure for municipal roads according to claim 4, characterized in that: The bottom of the bottom tube (3) is fixedly connected to a conical head (11).

6. The deep composite foundation reinforcement structure for municipal roads according to claim 5, characterized in that: A sealing ring (12) is fixedly connected to the bottom of the branch pipe (2), and the bottom surface of the sealing ring (12) is in contact with the top surface of the corresponding branch pipe (2) or bottom pipe (3).

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