A micro-pile pile cap structure

Abstract

This utility model relates to the technical field of pile foundations, and in particular to a micropile cap structure, which includes a concrete column. The bottom of the concrete column is supported on the roof slab of an underground garage, and the top of the concrete column supports the entrance and disabled access ramp. A riser is cast inside the concrete column, and multiple wing plates are connected around the riser. A base supporting the underground garage roof slab is provided at the bottom of the riser. After the garage and main structure are completed, soil is excavated from the ground level to the top surface of the garage roof slab, and holes are dug. The riser and wing plates are placed in the holes, and then concrete is poured into the holes to form a concrete column. The bottom of the concrete column is supported on the garage roof slab, and the top supports the entrance and disabled access ramp, thereby improving the bearing capacity and effectively solving the problem of foundation settlement.

Description

Technical Field

[0001] This utility model relates to the technical field of pile foundations, and in particular to a micro-pile cap structure. Background Technology

[0002] In the construction of buildings with underground parking garages, the underground parking garage and main structure are completed first, followed by the construction of the entrance and disabled access ramps according to the construction schedule. However, due to the height difference between the underground parking garage roof slab and the first-floor structure, simply compacting the soil layer before constructing the entrance and disabled access ramps can easily lead to foundation settlement and quality problems. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present invention provides a micro-pile cap structure.

[0004] The micro-pile cap structure provided by this utility model adopts the following technical solution:

[0005] A micro-pile cap structure includes a concrete column, the bottom of which is supported on the roof of an underground garage, the top of which is used to support an entrance and a disabled ramp, a riser is poured inside the concrete column, multiple wing plates are connected around the riser, and a base is provided at the bottom of the riser to support the roof of the underground garage.

[0006] By adopting the above technical solution, after the garage and main structure are completed, soil is excavated from the ground level to the top of the garage roof slab, holes are dug, and risers and wing plates are placed in the holes. Then, concrete is poured into the holes to form concrete columns. The bottom of the concrete columns is supported on the garage roof slab, and the top is used to support the entrance and disabled ramp, thereby improving the bearing capacity and effectively solving the problem of foundation settlement.

[0007] Optionally, the wing plate has multiple through holes from top to bottom.

[0008] By adopting the above technical solution, through holes are set to make the connection between the concrete column and the flange more secure.

[0009] Optionally, a cross plate is connected between two adjacent flanges on different risers via positioning components, and a concrete beam is cast outside the cross plate.

[0010] By adopting the above technical solution, and setting up horizontal connecting plates and concrete beams, multiple concrete columns are connected into a whole, thereby improving the overall load-bearing capacity.

[0011] Optionally, the positioning element is a U-shaped plate, which is fixed to the end of the cross plate and clamped to the top of the wing plate.

[0012] By adopting the above technical solution, the cross plate can be fixed by clamping the U-shaped plate onto the wing plate, which improves the convenience of installation.

[0013] Optionally, the positioning components are bolts and nuts, and the wing plate is bolted to the cross plate.

[0014] By adopting the above technical solution, bolt connection is a common installation method, which is relatively simple to operate and provides a firm connection.

[0015] Optionally, the flange and the riser are fixed together by multiple connecting rods.

[0016] By adopting the above technical solution, narrower wing plates can be manufactured, saving materials.

[0017] Optionally, the base is in the shape of a circular plate and is fixed vertically to the riser.

[0018] By adopting the above technical solution, the circular plate-shaped base can effectively support the riser and ensure the stability of the riser during the concrete pouring process.

[0019] Optionally, the base consists of multiple reinforcing bars arranged around the bottom of the riser, which are welded and fixed to the riser.

[0020] By adopting the above technical solution, the base made of multiple steel bars can reduce the manufacturing cost while ensuring the stability of the riser. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of the micro-pile cap structure of Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram of the internal structure of the micro-pile cap structure of Embodiment 1 of this utility model.

[0023] Figure 3 This is a schematic diagram of the internal structure of the concrete column in Embodiment 2 of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Concrete column; 2. Concrete beam; 3. Riser; 4. Wing plate; 40. Through hole; 5. Base; 6. Horizontal connecting plate; 7. Positioning component; 8. Connecting rod. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 The present invention will be described in further detail below.

[0026] This utility model discloses a micro-pile cap structure. Example

[0027] Reference Figure 1 and Figure 2The micropile cap structure includes four concrete columns 1 arranged in a matrix. A concrete beam 2 connects the tops of two adjacent concrete columns 1. A vertical pipe 3 is cast inside the concrete column 1 and is located at its center. The vertical pipe 3 is made of steel pipe. Four wing plates 4 are evenly fixed around the vertical pipe 3. The wing plates 4 are rectangular steel plates and are set vertically. Multiple through holes 40 are evenly opened on the wing plates 4 along the length direction. When pouring concrete, the concrete can pass through the through holes 40, thereby making the connection between the wing plates 4 and the concrete columns 1 more stable.

[0028] Reference Figure 2 A circular base 5 is vertically fixed to the bottom end of the riser 3. The base 5 is supported on the roof of the underground garage to ensure the stability of the riser 3 during the concrete pouring process. A transverse connecting plate 6 is provided between the tops of two adjacent wing plates 4 on different risers 3. The transverse connecting plate 6 is poured into the concrete beam 2. The end of the transverse connecting plate 6 is fixed to the wing plate 4 by a positioning member 7. In this embodiment, the positioning member 7 is a U-shaped plate. The U-shaped plate is welded and fixed to the transverse connecting plate 6 and clamped on the wing plate 4. In other embodiments, bolts and nuts can also be used as positioning members 7 to bolt the wing plate 4 to the transverse connecting plate 6.

[0029] After the garage and main structure are completed, the soil is excavated from the ground level to the top of the garage roof slab, and four holes are dug. A horizontal groove is dug between the tops of adjacent holes. The riser 3 and wing plate 4 are placed in the holes, and the horizontal connecting plate 6 is installed in the groove. Then, concrete is poured into the holes and the groove to form concrete column 1 and concrete beam 2. The bottom of the concrete column 1 is supported on the garage roof slab, and the top is used to support the door and the disabled ramp, thereby improving the bearing capacity and effectively solving the problem of foundation settlement.

[0030] The concrete beam 2 connects two adjacent concrete columns 1, forming a unified structure with the four concrete columns 1. The concrete beam 2 and the concrete columns 1 jointly support the superstructure. This micropile cap structure can be easily fabricated using readily available scrap steel pipes and plates found on construction sites. Example

[0031] Reference Figure 3 The difference between this embodiment and Embodiment 1 is that, to further reduce manufacturing costs, the width of the wing plate 4 in this embodiment is half the width of the wing plate 4 in Embodiment 1. The wing plate 4 is fixedly connected to the riser 3 by three connecting rods 8, which can be made of reinforcing steel. Meanwhile, the base 5 at the bottom of the riser 3 is formed by multiple reinforcing steel bars arranged around it, and these reinforcing steel bars are welded and fixed to the riser 3. Using a narrower wing plate 4 and a base 5 made of reinforcing steel effectively reduces manufacturing costs.

[0032] The above are all 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 covered within the scope of protection of this utility model.

Claims

1. A micropile mat structure, characterized by: It includes a concrete column (1), the bottom of which is supported on the roof of the underground garage, the top of which is used to support the entrance and the disabled ramp, a riser (3) is poured inside the concrete column (1), multiple wing plates (4) are connected around the riser (3), and a base (5) is provided at the bottom of the riser (3) to support the roof of the underground garage.

2. The micropile cap structure according to claim 1, characterized in that: The wing plate (4) has multiple through holes (40) from top to bottom.

3. The micropile cap structure according to claim 1 or 2, characterized in that: A horizontal connecting plate (6) is connected between two adjacent flanges (4) located on different risers (3) by a positioning piece (7), and a concrete beam (2) is poured outside the horizontal connecting plate (6).

4. The micropile cap structure according to claim 3, characterized in that: The positioning component (7) is a U-shaped plate, which is fixed to the end of the cross plate (6) and clamped to the top of the wing plate (4).

5. The micropile cap structure according to claim 3, characterized in that: The positioning element (7) consists of bolts and nuts, and the wing plate (4) is bolted to the cross plate (6).

6. The micropile cap structure according to claim 1 or 2, characterized in that: The wing plate (4) and the riser (3) are fixedly connected by multiple connecting rods (8).

7. The micropile cap structure according to claim 1 or 2, characterized in that: The base (5) is in the shape of a circular plate and is fixedly connected to the riser (3) perpendicularly.

8. The micropile cap structure according to claim 1 or 2, characterized in that: The base (5) consists of multiple reinforcing bars arranged around the bottom of the riser (3), which are welded and fixed to the riser (3).

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