Combined foundation pit support

Abstract

The utility model discloses a combined foundation pit support. The combined foundation pit support comprises a plurality of forward steel sheet piles, a plurality of reverse steel sheet piles and a plurality of I-beams, one side of each forward steel sheet pile is connected with the corresponding reverse steel sheet pile, the other side of each reverse steel sheet pile is connected with another forward steel sheet pile, the forward steel sheet piles and the reverse steel sheet piles are connected in sequence, the forward steel sheet piles and the reverse steel sheet piles are connected into a row, and each reverse steel sheet pile is connected with the corresponding I-shaped steel. The forward steel sheet pile comprises a first longitudinal thin plate, two first edge plates, two first male lock catches and two first female lock catches; the two ends of the first longitudinal thin plate are respectively connected with one first edge plate, and the lower end of each first edge plate is connected with one first male lock catch and one first female lock catch. The combined foundation pit support aims to overcome the existing defects, the supporting capacity of a foundation pit is improved, and safety and reliability of the working environment of foundation pit engineering are guaranteed.

Description

Technical Field

[0001] This utility model relates to a combined type of foundation pit support. Background Technology

[0002] Currently, urban infrastructure construction is developing rapidly, the engineering construction system is gradually improving, and the construction trend of various projects is gradually shifting from traditional infrastructure to new infrastructure. Unlike traditional infrastructure, new infrastructure is built in the complex urban environment, where existing urban buildings and underground pipelines can significantly impact new construction. The complex urban environment makes it impossible to use traditional slope excavation methods for foundation pits in some new buildings, and instead, a foundation pit support method using steel sheet piles is adopted.

[0003] Traditional sheet pile support involves driving sheet piles into the excavation line before excavation to ensure the safety and stability of the foundation pit during and after excavation. However, the support strength of traditional sheet pile support, relying solely on the strength of the sheet piles themselves, is often insufficient for complex geological environments. Excavations in locations with complex traffic conditions or near water or rivers place higher demands on the slope stability of the foundation pit and the water-retaining performance of the slopes during engineering operations. Therefore, a combined foundation pit support system is proposed to address these issues. Utility Model Content

[0004] The purpose of this utility model is to overcome the existing defects and provide a combined foundation pit support, improve the support capacity of the foundation pit, and ensure the safety and reliability of the foundation pit engineering operation environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined foundation pit support, comprising multiple forward sheet piles, multiple reverse sheet piles, and multiple I-beams; one side of each forward sheet pile is connected to a reverse sheet pile, and the other side of each reverse sheet pile is connected to another forward sheet pile, and so on, with multiple forward sheet piles and multiple reverse sheet piles connected in a row, and each reverse sheet pile is connected to an I-beam.

[0006] Preferably, the positive sheet pile includes a first longitudinal thin plate, two first edge plates, two first male locking buckles and two first female locking buckles; one of the first edge plates is connected to each end of the first longitudinal thin plate, and one of the first male locking buckles and one of the first female locking buckles are connected to the lower end of each first edge plate.

[0007] Preferably, the reverse sheet pile includes a second longitudinal thin plate, two second edge plates, two second male locking buckles and two second female locking buckles; each end of the second longitudinal thin plate is connected to a second edge plate, and the lower end of each second edge plate is connected to a second male locking buckle and a second female locking buckle.

[0008] Preferably, a longitudinal guide groove plate is connected to the inner side of each of the two second edge plates, and the two longitudinal guide groove plates are used to snap the two ends of the I-beam.

[0009] Preferably, the lengths of the first longitudinal thin plate and the second longitudinal thin plate are 50 cm.

[0010] Preferably, the lengths of the first edge plate and the second edge plate are 45 cm.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This combined type of foundation pit support can be flexibly applied to foundation pit excavation operations under various complex working conditions. By interlocking the new type of steel sheet piles and adding waterproof mortar, the overall support strength of the foundation pit is improved, which helps to ensure the safety of other subsequent engineering operations within the foundation pit.

[0013] This combined excavation support system innovates upon traditional sheet pile support methods, retaining the convenience and flexibility of traditional sheet pile support. It can be applied to excavation operations of various lengths and environments. Utilizing the first male and second female interlocking locks between the forward and reverse sheet piles, the system effectively overcomes the pressure caused by lateral offset and improves the stability of the longitudinal connection. I-beams are added for reinforcement, and longitudinal guide grooves are added inside the reverse sheet piles. After the I-beams are inserted, their high longitudinal strength significantly enhances the overall support strength. A cavity is pre-reserved between the forward and reverse sheet piles; after the sheet piles are driven in, waterproof mortar is poured in, thus connecting all the sheet piles into a unified whole. This prevents water from penetrating through the gaps and flowing into the excavation, greatly improving the water-retaining performance of the support. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the positive steel sheet pile of this utility model;

[0016] Figure 2 This is a schematic diagram of the reverse sheet pile of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection of the combined foundation pit support of this utility model;

[0018] Figure 4 This is a schematic diagram illustrating the application of the combined foundation pit support of this utility model.

[0019] In the diagram: 1. Forward sheet pile; 2. Reverse sheet pile; 3. I-beam; 4. Longitudinal guide channel plate; 11. First longitudinal thin plate; 12. First edge plate; 13. First male locking buckle; 14. Second female locking buckle; 21. Second longitudinal thin plate; 22. Second edge plate; 23. Second male locking buckle; 24. Second female locking buckle; 5. Cavity; 6. Outside of the pit; 7. Inside of the pit. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 A combined foundation pit support includes multiple positive sheet piles 1, multiple negative sheet piles 2, and multiple I-beams 3; one side of the positive sheet pile 1 is connected to a negative sheet pile 2, and the other side of the negative sheet pile 2 is connected to another positive sheet pile 1, and so on. Multiple positive sheet piles 1 and multiple negative sheet piles 2 are connected in a row, and each negative sheet pile 2 is connected to an I-beam 3.

[0022] Specifically, the positive steel sheet pile 1 includes a first longitudinal thin plate 11, two first edge plates 12, two first male locking buckles 13 and two first female locking buckles 14; the two ends of the first longitudinal thin plate 11 are respectively connected to a first edge plate 12, and the lower end of each first edge plate 12 is connected to a first male locking buckle 13 and a first female locking buckle 14.

[0023] Specifically, the reverse sheet pile 2 includes a second longitudinal thin plate 21, two second edge plates 22, two second male locking buckles 23, and two second female locking buckles 24. Each end of the second longitudinal thin plate 21 is connected to a second edge plate 22, and the lower end of each second edge plate 22 is connected to a second male locking buckle 23 and a second female locking buckle 24. The inner sides of each of the two second edge plates 22 are connected to a longitudinal guide groove plate 4, which is used to clamp the two ends of the I-beam 3.

[0024] Specifically, a cavity 5 can be formed between the first male locking buckle 13 and the first female locking buckle 14 and the second male locking buckle 23 and the second female locking buckle 24, which facilitates the later filling of waterproof mortar.

[0025] Specifically, the lengths of the first longitudinal thin plate 11 and the second longitudinal thin plate 21 are 50 cm. The lengths of the first edge plate 12 and the second edge plate 22 are 45 cm.

[0026] Specifically, before formal excavation, the site is marked out according to the surrounding conditions to determine the excavation area and the area for the sheet piles. Using designated machinery, the forward sheet piles 1 are driven into the soil at the marked positions, with the opening of the sheet pile facing outwards from the pit (6). After the first forward sheet pile 1 is driven in, the reverse sheet pile 2 is connected and secured to the first male and female locking buckles 13 and 14 of the forward sheet pile 1 via the second male locking buckle 23 and the second female locking buckle 24, and then inserted into the soil, with the opening of the sheet pile facing inwards from the pit (7). Subsequently, this process is repeated to secure the forward sheet piles 1 and reverse sheet piles 2 and complete the driving. I-beams 3 are driven into the soil at the positions of the reverse sheet piles 2, using the longitudinal guide grooves 4 of the reverse sheet piles 2 to secure the edges of the I-beams 3, and then inserted into the soil as a whole. The debris in the cavity 5 formed between the first male locking buckle 13 and the first female locking buckle 14 and the second male locking buckle 23 and the second female locking buckle 24 is cleaned, and waterproof mortar is poured in and mixed evenly. After the waterproof mortar dries, the subsequent excavation can proceed.

[0027] This combined type of foundation pit support can be flexibly applied to foundation pit excavation operations under various complex working conditions. By interlocking the new type of steel sheet piles and adding waterproof mortar, the overall support strength of the foundation pit is improved, which helps to ensure the safety of other subsequent engineering operations within the foundation pit.

[0028] This combined excavation support system innovates upon traditional sheet pile support methods, retaining the convenience and flexibility of traditional sheet pile support. It can be applied to excavation operations of various lengths and environments. The system utilizes the first male locking buckle 13, the first female locking buckle 14, the second male locking buckle 23, and the second female locking buckle 24 between the forward sheet pile 1 and the reverse sheet pile 2 to secure them together, greatly overcoming the pressure caused by lateral offset and improving the stability of the longitudinal connection. I-beams are added for reinforcement; a longitudinal guide groove plate 4 is added inside the reverse sheet pile 2. After the I-beam is inserted, its high longitudinal strength greatly enhances the overall support strength. A cavity is pre-reserved between the forward sheet pile 1 and the reverse sheet pile 2. After the sheet piles are driven in, waterproof mortar is poured in, thus connecting all the sheet piles into a whole, preventing water from penetrating through the gaps and flowing into the excavation pit, greatly improving the water-retaining performance of the support.

[0029] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combined foundation pit support system, characterized in that, It includes multiple positive sheet piles (1), multiple negative sheet piles (2), and multiple I-beams (3); one side of each positive sheet pile (1) is connected to a negative sheet pile (2), and the other side of each negative sheet pile (2) is connected to another positive sheet pile (1), and so on. Multiple positive sheet piles (1) and multiple negative sheet piles (2) are connected in a row, and each negative sheet pile (2) is connected to an I-beam (3). The positive steel sheet pile (1) includes a first longitudinal thin plate (11), two first edge plates (12), two first male locking buckles (13) and two first female locking buckles (14); the two ends of the first longitudinal thin plate (11) are respectively connected to a first edge plate (12), and the lower end of each first edge plate (12) is connected to a first male locking buckle (13) and a first female locking buckle (14). The reverse sheet pile (2) includes a second longitudinal thin plate (21), two second edge plates (22), two second male locking buckles (23) and two second female locking buckles (24); the two ends of the second longitudinal thin plate (21) are respectively connected to a second edge plate (22), and the lower end of each second edge plate (22) is connected to a second male locking buckle (23) and a second female locking buckle (24); Each of the two second edge plates (22) is connected to a longitudinal guide groove plate (4), and the two longitudinal guide groove plates (4) are used to snap the two ends of the I-beam (3).

2. The combined foundation pit support according to claim 1, characterized in that, The lengths of the first longitudinal thin plate (11) and the second longitudinal thin plate (21) are 50 cm.

3. The combined foundation pit support according to claim 1, characterized in that, The lengths of the first edge plate (12) and the second edge plate (22) are 45 cm.

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