Foundation pit support retaining wall structure

Abstract

The utility model discloses a foundation pit support retaining wall structure which comprises a foundation pit, concrete baffles are arranged on the edge of the foundation pit at equal intervals, the concrete baffles are of reinforced concrete structures, the concrete baffles are prefabricated in a factory, and the concrete baffles are arranged in a contact mode. A reinforced concrete pouring cylinder is arranged between the foundation pit and the concrete baffle, one end of the reinforced concrete pouring cylinder is arranged in the concrete baffle, and the other end of the reinforced concrete pouring cylinder is arranged in the foundation pit. And then the multiple concrete baffles make contact with one another and are placed on the edge of the foundation pit in an attached mode, the foundation pit can be protected through the multiple concrete baffles, the concrete baffles are produced only through prefabrication, the construction time of foundation pit enclosure is shortened, the concrete baffles and the foundation pit can be fixed through the reinforced concrete pouring barrels, and the construction efficiency is improved. And the retaining strength of the concrete baffle to the foundation pit is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit retaining wall, specifically a foundation pit retaining wall structure. Background Technology

[0002] Retaining walls for foundation pits are important structures used in engineering to support the slopes of foundation pits. They are mainly used to prevent soil collapse, maintain slope stability, and ensure construction safety. Existing types of retaining walls for foundation pits include pile support, slope excavation, deep mixing cement-soil retaining walls, and high-pressure jet grouting piles. All of these types of retaining walls for foundation pits are constructed at the foundation pit location, resulting in a long construction time. Utility Model Content

[0003] The purpose of this utility model is to provide a retaining wall structure for foundation pit protection to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a retaining wall structure for a foundation pit, comprising a foundation pit, wherein concrete baffles are equidistantly arranged at the edge of the foundation pit, the concrete baffles are prefabricated in a factory, and a plurality of the concrete baffles are arranged in contact with each other, and a reinforced concrete casting cylinder is provided between the foundation pit and the concrete baffles, one end of the reinforced concrete casting cylinder being located inside the concrete baffles, and the other end of the reinforced concrete casting cylinder being located inside the foundation pit.

[0005] As a further preferred embodiment of this technical solution, the concrete baffle is a reinforced concrete structure.

[0006] As a further preferred embodiment of this technical solution, the interior of the foundation pit is drilled with holes by a drilling device, and the concrete baffle is provided with preset holes, with the concrete baffle located inside the drilled holes and the preset holes.

[0007] As a further preferred embodiment of this technical solution, both the drilled holes and the pre-drilled holes are inclined, and two reinforced concrete casting cylinders are provided on one of the concrete baffles, with the two reinforced concrete casting cylinders inclined in a V-shape.

[0008] As a further preferred embodiment of this technical solution, a groove is provided at the bottom edge of the foundation pit, and a reinforced concrete support base is provided inside the groove. The reinforced concrete support base is formed by precasting reinforced concrete, and a positioning groove is provided at one end of the reinforced concrete support base. The bottom of the lowest concrete baffle is located inside the positioning groove.

[0009] As a further preferred embodiment of this technical solution, the bottom of the reinforced concrete support base is integrally cast with symmetrical insert columns, which are inserted into the bottom of the foundation pit.

[0010] As a further preferred embodiment of this technical solution, connecting holes are provided on the contact surfaces of two adjacent concrete baffles, a connecting plate is installed inside the connecting hole, and fastening bolts are symmetrically installed on the connecting plate. Bolt holes are provided on the concrete baffles corresponding to the positions of the connecting holes and the fastening bolts, and the fastening bolts are connected to the bolt holes.

[0011] This utility model provides a retaining wall structure for foundation pit protection, which has the following beneficial effects:

[0012] (1) This utility model prefabricates concrete baffles in the factory, and then places several concrete baffles in contact with each other and attached to the edge of the foundation pit. The foundation pit can be protected by several concrete baffles. The concrete baffles are prefabricated, which reduces the construction time of the foundation pit protection.

[0013] (2) This utility model involves placing a concrete baffle at the edge of the foundation pit, drilling holes inside the foundation pit along the inclined angle of a pre-set hole using a drilling device, placing a steel cage inside the pre-set hole and the drilled hole, and pouring concrete into the pre-set hole and the drilled hole using a concrete pouring device to form a reinforced concrete pouring cylinder. The reinforced concrete pouring cylinder is used to connect the foundation pit and the concrete baffle. The reinforced concrete pouring cylinder can fix the concrete baffle to the foundation pit and improve the protective strength of the concrete baffle for the foundation pit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0016] Figure 3 This is a schematic diagram of a partial explosion structure of the present invention;

[0017] In the diagram: 1. Excavation pit; 2. Concrete baffle; 3. Reinforced concrete pouring cylinder; 4. Drill hole; 5. Pre-drilled hole; 6. Groove; 7. Reinforced concrete support base; 8. Positioning groove; 9. Inserted column; 10. Connecting hole; 11. Connecting plate; 12. Fastening bolt; 13. Bolt hole. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figures 1 to 3As shown in this embodiment, a retaining wall structure for a foundation pit includes a foundation pit 1. Concrete baffles 2 are equidistantly arranged at the edge of the foundation pit 1. The concrete baffles 2 are reinforced concrete structures and are prefabricated in a factory. Several concrete baffles 2 are arranged in contact with each other. A reinforced concrete casting cylinder 3 is arranged between the foundation pit 1 and the concrete baffles 2. One end of the reinforced concrete casting cylinder 3 is located inside the concrete baffles 2, and the other end of the reinforced concrete casting cylinder 3 is located inside the foundation pit 1. The concrete baffles 2 are prefabricated in the factory, and then several concrete baffles 2 are placed in contact with each other and attached to the edge of the foundation pit 1. The foundation pit 1 can be protected by several concrete baffles 2. The concrete baffles 2 are only prefabricated, which reduces the construction time of the foundation pit 1. The reinforced concrete casting cylinder 3 can fix the concrete baffles 2 to the foundation pit 1, thereby improving the retaining strength of the concrete baffles 2 for the foundation pit 1.

[0020] like Figures 1 to 3 As shown, the pit 1 has a drill hole 4 drilled inside by a drilling device, and a pre-set hole 5 is provided on the concrete baffle 2. The concrete baffle 2 is located inside the drill hole 4 and the pre-set hole 5. The drill hole 4 and the pre-set hole 5 are both inclined. Two reinforced concrete pouring cylinders 3 are provided on one of the concrete baffles 2. The two reinforced concrete pouring cylinders 3 are inclined in a V-shape.

[0021] After the concrete baffle 2 is placed against the edge of the foundation pit 1, a borehole 4 is drilled inside the foundation pit 1 along the inclined angle of the pre-set hole 5 using a drilling device. Then, the reinforcing cage is placed inside the pre-set hole 5 and the borehole 4. Concrete is poured into the pre-set hole 5 and the borehole 4 using a concrete pouring device to form a reinforced concrete pouring cylinder 3, which is used to connect the reinforced concrete pouring cylinder 3 to the foundation pit 1 and the concrete baffle 2. By setting the two reinforced concrete pouring cylinders 3 on one concrete baffle 2 at an inverted V-shape, the stability of the concrete baffle 2 fixed on the side wall of the foundation pit 1 can be improved.

[0022] like Figures 1 to 3 As shown, a groove 6 is provided at the bottom edge of the foundation pit 1, and a reinforced concrete support base 7 is provided inside the groove 6. The reinforced concrete support base 7 is formed by precasting reinforced concrete. A positioning groove 8 is provided at one end of the reinforced concrete support base 7, and the bottom of the concrete baffle 2 at the lowest end is located inside the positioning groove 8.

[0023] The reinforced concrete support base 7 is prefabricated in the factory and placed inside the groove 6 opened at the bottom of the foundation pit 1. Then, a concrete baffle 2 at the lowest part is installed inside the positioning groove 8 of the reinforced concrete support base 7. The reinforced concrete support base 7 can support a vertical row of concrete baffles 2.

[0024] like Figures 1 to 3 As shown, the bottom of the reinforced concrete support base 7 is symmetrically and integrally cast with insert columns 9, which are inserted into the bottom of the foundation pit 1.

[0025] The position of the reinforced concrete support base 7 can be fixed by inserting the insert 9 into the bottom of the foundation pit 1.

[0026] like Figures 1 to 3 As shown, the surfaces of two adjacent concrete baffles 2 at their contact positions are provided with connecting holes 10. A connecting plate 11 is installed inside the connecting hole 10. Fastening bolts 12 are symmetrically installed on the connecting plate 11. Bolt holes 13 are provided on the concrete baffles 2 at the positions of the connecting holes 10 corresponding to the positions of the fastening bolts 12. The fastening bolts 12 are connected to the bolt holes 13.

[0027] The connecting plate 11 is installed inside the connecting holes 10 of two adjacent concrete baffles 2. The end of the fastening bolt 12 is screwed into the bolt hole 13 by using the fastening bolt 12 to fix the connecting plate 11 between the two concrete baffles 2. The connecting plate 11 can be used to connect and fix the two adjacent concrete baffles 2.

[0028] This utility model provides a retaining wall structure for foundation pit protection, and its specific working principle is as follows:

[0029] When the device is in use, concrete baffles 2 and reinforced concrete support bases 7 are prefabricated in the factory. The reinforced concrete support bases 7 are placed inside the grooves 6 opened at the bottom of the foundation pit 1. The position of the reinforced concrete support bases 7 is fixed by inserting the inserts 9 into the bottom of the foundation pit 1. Then, the concrete baffles 2 are placed against the edge of the foundation pit 1, and the lowest concrete baffle 2 is installed inside the positioning groove 8 of the reinforced concrete support bases 7. Then, the drilling equipment drills holes 4 inside the foundation pit 1 along the inclined angle of the preset holes 5. Then, the steel cage is placed inside the preset holes 5 and the drill holes 4. Concrete is poured into the preset holes 5 and the drill holes 4 by the concrete pouring equipment to form a reinforced concrete pouring cylinder 3. The reinforced concrete pouring cylinder 3 is used to connect the foundation pit 1 and the concrete baffles 2. The reinforced concrete pouring cylinder 3 can fix the concrete baffles 2 to the foundation pit 1, thereby improving the protective strength of the concrete baffles 2 for the foundation pit 1.

[0030] The connecting plate 11 is installed inside the connecting holes 10 of two adjacent concrete baffles 2. The end of the fastening bolt 12 is screwed into the bolt hole 13 by using the fastening bolt 12 to fix the connecting plate 11 between the two concrete baffles 2. The connecting plate 11 can be used to connect and fix the two adjacent concrete baffles 2.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retaining wall structure for a foundation pit (1) comprising: a foundation pit (1) characterised in that: The edge of the foundation pit (1) is provided with concrete stop boards (2) at equal intervals, the concrete stop boards (2) are prefabricated in a factory, a plurality of the concrete stop boards (2) are arranged in contact, a reinforced concrete pouring cylinder (3) is arranged between the foundation pit (1) and the concrete stop board (2), one end of the reinforced concrete pouring cylinder (3) is arranged inside the concrete stop board (2), and the other end of the reinforced concrete pouring cylinder (3) is arranged inside the foundation pit (1).

2. The retaining wall structure according to claim 1, wherein: The concrete stop board (2) is a reinforced concrete structure.

3. The retaining wall structure of claim 1, wherein: The inside of the foundation pit (1) is provided with a drill hole (4) drilled by a drilling device, the concrete stop board (2) is provided with a preset hole (5), and the concrete stop board (2) is arranged inside the drill hole (4) and the preset hole (5).

4. The retaining wall structure according to claim 3, wherein: The drill hole (4) and the preset hole (5) are both arranged in an inclined manner, two reinforced concrete pouring cylinders (3) are arranged on one concrete stop board (2), and the two reinforced concrete pouring cylinders (3) are arranged in an eight-shaped inclined manner.

5. The retaining wall structure according to claim 3, wherein: The edge of the foundation pit (1) is provided with a groove (6), the groove (6) is provided with a reinforced concrete supporting base (7) inside, the reinforced concrete supporting base (7) is prefabricated and poured by reinforced concrete, one end of the reinforced concrete supporting base (7) is provided with a positioning groove (8), and the bottom of the lowest concrete stop board (2) is arranged inside the positioning groove (8).

6. A retaining wall structure for a foundation pit according to claim 5, wherein: The bottom of the reinforced concrete supporting base (7) is integrally poured with a plug-in column (9) in a symmetrical manner, and the plug-in column (9) is arranged inside the bottom of the foundation pit (1).

7. The retaining wall structure according to claim 4, wherein: The contact position surfaces of two adjacent concrete stop boards (2) are provided with connecting holes (10), the connecting holes (10) are provided with connecting plates (11) inside, the connecting plates (11) are symmetrically provided with fastening bolts (12), the concrete stop boards (2) are provided with bolt holes (13) corresponding to the positions of the fastening bolts (12), and the fastening bolts (12) are connected with the bolt holes (13).

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