Supporting structure for retaining soil in foundation pit

Abstract

The utility model provides a kind of supporting structure for foundation pit soil retaining, including supporting plate, the both sides of supporting plate are equipped with stand, the outer ring surface of stand is equipped with a group of annular array distribution's sliding slot, the both sides of supporting plate are respectively inserted into the sliding slot of two stand opposite faces;Supporting plate is equipped with two groups, two groups of supporting plate are symmetrical in front and back, the side of stand towards riverway is equipped with abutment, abutment is respectively contacted with the supporting plate located in the both sides of stand, and supporting beam is equipped between two front and back opposite abutments.The utility model can make supporting plate form neat row under the cooperation of stand, avoid several supporting plate to be skew state, can effectively support the sidewall of foundation pit effectively, avoid the appearance pit wall soil body slip, collapse, even cause the situation of overall overturning.

Description

Technical Field

[0001] This utility model relates to the field of support structure technology, and in particular to a support structure for retaining soil in foundation pits. Background Technology

[0002] Foundation pit support refers to a series of temporary or permanent structural measures taken in construction engineering to ensure the safety of foundation pit excavation and the stability of the surrounding environment. During the excavation of river foundation pits, support or reinforcement of the pit sidewalls resists earth pressure and prevents soil instability, slippage, or collapse during excavation. Currently, when support structures are driven into the soil, there is no connecting structure between the slabs; they are simply adjacent. Therefore, it is very easy for the support slabs to misalign with each other during the driving process, resulting in several support slabs being tilted. This fails to effectively support the pit sidewalls. Since each support slab bears different pressures, the tilted support slabs cannot effectively resist the earth pressure on the pit sidewalls, potentially leading to soil slippage, collapse, or even overall overturning. Utility Model Content

[0003] This utility model discloses a retaining structure for foundation pits, which solves the problem that after the retaining plates are driven into the soil, a series of retaining plates in a straight line are tilted and cannot effectively resist the soil pressure on the side wall of the foundation pit.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A retaining structure for foundation pits includes a support plate with columns on both sides. The outer ring surface of the columns has a set of grooves arranged in a ring array. The two sides of the support plate are inserted into the grooves on the opposite sides of the two columns. There are two sets of support plates, which are symmetrical front and back. The side of the column facing the river is provided with a stop plate, which contacts the support plates on both sides of the column. A support beam is provided between the two opposite stop plates.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] First, the columns are driven into the soil. Then, the support plates are placed between two adjacent columns and inserted into the soil. The two sides of the support plates are located in grooves on the two adjacent columns, which limit the insertion of the support plates and prevent them from tilting. Next, abutment plates are placed on the side of the support plates facing the river. Then, a support beam is placed between two corresponding abutment plates to hold the two opposing support plates together, further increasing the stability of the columns and support plates. This invention allows the support plates to form a neat row with the columns, preventing several support plates from tilting. It can effectively support the sidewalls of the foundation pit, preventing soil slippage, collapse, or even overall overturning. Attached Figure Description

[0008] Figure 1 This is a front view structural diagram of the present invention;

[0009] Figure 2 This is a top view of the structure of the column of this utility model;

[0010] Figure 3 This is a side sectional view of the support plate of this utility model.

[0011] In the diagram: 1. Support plate; 2. Column; 21. Slide groove; 22. Pile tip; 23. Short pipe; 24. Connecting pipe; 25. Perforation; 3. Water supply pipe; 4. Abutment plate; 5. Support beam; 6. Wedge plate. Detailed Implementation

[0012] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0013] like Figure 1 , Figure 2 and Figure 3As shown, this utility model provides a retaining structure for foundation pits, including a support plate 1, with columns 2 on both sides of the support plate 1. A set of grooves 21 arranged in a ring array are opened on the outer ring surface of the columns 2. The two sides of the support plate 1 are respectively inserted into the grooves 21 on the opposite sides of the two columns 2. There are two sets of support plates 1, which are symmetrical front and back. The side of the column 2 facing the river is provided with abutment plate 4, which contacts the support plate 1 located on both sides of the column 2. A support beam 5 is provided between the two opposing abutment plates 4. First, drive two sets of columns 2 into the soil, ensuring that two-thirds of each column 2 is embedded, positioning the river channel between the two sets of columns 2. Then, insert the support plate 1 into the groove 21 on the column 2, and subsequently drive the support plate 1 into the soil, ensuring that one-third of its length is embedded. The groove 21 effectively limits the movement of the support plate 1, preventing it from tilting after being driven into the soil. Adjacent support plates 1 are connected together by columns 2, and the placement of the columns 2 effectively... To prevent several support plates 1 from being tilted, the abutment plate 4 is then driven into the soil, with one-third of the abutment plate 4 embedded in the soil. The abutment plate 4 is then in contact with a column 2 and the two support plates 1 on either side of the column 2 facing the river channel. A trench is then dug in the river channel, and the support beam 5 is placed in the trench. The two ends of the support beam 5 are then used to hold the two opposing abutment plates 4 in place. The trench is then backfilled so that the top surface of the support beam 5 is flush with the bottom surface of the river channel to avoid affecting the normal flow of water.

[0014] like Figure 1 , Figure 2 and Figure 3 As shown, the slide groove 21 is T-shaped, and both sides of the support plate 1 are also T-shaped. The T-shaped arrangement of both sides of the support plate 1 and the slide groove 21 can increase the firmness of the connection between the support plate 1 and the column 2.

[0015] like Figure 1 As shown, the bottom of the column 2 is fixed with a conical pile tip 22, the diameter of the top of the pile tip 22 being larger than the diameter of the column 2. The pile tip 22 is designed to facilitate driving the column 2 into the soil.

[0016] like Figure 1 and Figure 2As shown, the column 2 is hollow, with a short pipe 23 connected to its top and a connecting pipe 24 connected to one side of the short pipe 23. A protective plate is fixed to the top of the short pipe 23. A perforation 25 is provided on the column 2 near the pile tip 22. The perforations 25 on the column 2 are staggered to allow the external mud-carrying pipe to be connected to the connecting pipe 24 during the driving process. The mud is fed into the short pipe 23 through the connecting pipe 24, and then flows into the column 2 and out through the perforations 25. This reduces friction between the column 2 surface and the soil, providing lubrication and facilitating better driving of the column 2 into the soil. The protective plate protects the short pipe 23 from direct impact.

[0017] like Figure 1 and Figure 3 As shown, a wedge plate 6 is fixed to the bottom of the support plate 1. The wedge plate 6 is provided to facilitate the workers to drive the support plate 1 into the soil.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, the top of the support plate 1 has a water supply channel extending to the bottom of the wedge plate 6, and the top of the support plate 1 has a water supply pipe 3 with a drainage end inserted into the water supply channel. The bottom of the abutment plate 4 can be triangular to facilitate driving it into the soil; the water supply pipe 3 is fixed to the top of the support plate 1 by bolts, the top of the water supply pipe 3 has a water inlet end, and the bottom of the water supply pipe 3 has a set of drainage ends, which are respectively inserted into the water supply channel opened on the top of the support plate 1 (the number of water supply channels on the support plate 1 is the same as the number of drainage ends of the water supply pipe 3), so that during the process of driving the support plate 1 into the soil, water is pumped into the water supply pipe 3 by an external water pump, and the water enters the water supply channel and is discharged through the bottom of the wedge plate 6. When the support plate 1 is inserted into the soil, high-pressure water is sprayed to assist the support plate 1 in sinking.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A retaining structure for foundation pits, comprising a retaining plate (1), characterized in that: The support plate (1) is provided with columns (2) on both sides. The outer ring surface of the column (2) is provided with a set of grooves (21) arranged in a ring array. The two sides of the support plate (1) are respectively inserted into the grooves (21) on the opposite sides of the two columns (2). The support plate (1) is provided with two sets. The two sets of support plates (1) are symmetrical front and back. The side of the column (2) facing the river is provided with abutment plate (4). The abutment plate (4) is in contact with the support plate (1) located on both sides of the column (2). A support beam (5) is provided between the two abutment plates (4) facing each other.

2. The retaining structure for foundation pits according to claim 1, characterized in that: The slide (21) is T-shaped, and the two sides of the support plate (1) are T-shaped respectively.

3. The retaining structure for foundation pits according to claim 1, characterized in that: The bottom of the column (2) is fixed with a cone-shaped pile tip (22), and the diameter of the top of the pile tip (22) is greater than the diameter of the column (2).

4. The retaining structure for foundation pits according to claim 3, characterized in that: The column (2) is hollow, and a short pipe (23) is connected to the top of the column (2). A connecting pipe (24) is connected to one side of the short pipe (23). A protective plate is fixed to the top of the short pipe (23). A through hole (25) is opened on the column (2) near the pile tip (22).

5. The retaining structure for foundation pits according to claim 1, characterized in that: The bottom of the support plate (1) is fixed with a wedge plate (6).

6. The retaining structure for foundation pits according to claim 5, characterized in that: The top of the support plate (1) is provided with a water conveying channel extending to the bottom of the wedge plate (6), and the top of the support plate (1) is provided with a water conveying pipe (3) with the drain end inserted into the water conveying channel.

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