Foundation pit support structure

Abstract

The utility model provides a foundation pit support structure. The foundation pit support structure comprises a plurality of steel protective plates, the first connecting structure comprises two steel pipe piles which are arranged at intervals and two mounting seats which are arranged on the steel pipe piles in the vertical direction, and the head ends of every two adjacent steel protection plates are arranged on the corresponding mounting seats; the second connecting structure is used for connecting the tail ends of the two adjacent steel protection plates; wherein the multiple steel protection plates are sequentially connected end to end, and an enclosure cavity is defined by the steel protection plates. The technical problem that in the prior art, the construction speed of an enclosure structure is low is solved.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit protection technology, and in particular to a foundation pit protection structure. Background Technology

[0002] In existing construction projects, underground space development, and municipal engineering, foundation pit excavation is a common construction step. Because the stability of the soil surrounding the foundation pit directly affects construction safety, reliable retaining structures must be used to prevent soil collapse, groundwater leakage, and settlement of surrounding buildings. Traditional retaining methods include diaphragm walls, bored piles, and sheet piles. These traditional structures require individual driving or pouring of each pile, making them unsuitable for rapid construction needs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a foundation pit retaining structure that solves the technical problem of slow construction speed of retaining structures in existing technologies.

[0004] According to the embodiments of this utility model, the following technical solution is adopted:

[0005] A foundation pit retaining structure, comprising:

[0006] Multiple steel protective plates;

[0007] The first connection structure includes two steel pipe piles arranged alternately and two mounting seats arranged vertically on the steel pipe piles, with the first ends of two adjacent steel protective plates located on the corresponding mounting seats;

[0008] The second connecting structure connects the tail ends of two adjacent steel guard plates;

[0009] The steel protective plates are connected end to end in sequence to form an enclosing cavity.

[0010] Preferably, the two mounting seats are provided with connected mounting grooves, and the mounting seat at the lower end has a sealing portion, and the steel guard plate is detachably inserted into the mounting groove.

[0011] Preferably, the lower end of the steel guard plate is tapered.

[0012] Preferably, the enclosure structure further includes reinforcing members, which are multiple reinforcing rods connecting adjacent steel guard plates.

[0013] Preferably, the reinforcement further includes:

[0014] A fixing groove is provided in the steel protective plate;

[0015] A fixing rod passes through the fixing groove;

[0016] Two sliders are spaced apart from the fixed rod, and the reinforcing rod is rotatably mounted on the sliders.

[0017] Preferably, a compression spring is sleeved on the fixed rod, and the two ends of the compression spring are connected to the corresponding sliders.

[0018] Preferably, the lower end of the steel pipe pile has a tapered structure.

[0019] Compared with the prior art, this utility model has the following advantages: the use of prefabricated steel protective plates facilitates rapid assembly and improves construction efficiency; the steel pipe piles and installation bases form rigid nodes to ensure the integrity of the retaining structure; at the same time, the arrangement of the steel protective plates can be adjusted according to the shape of the foundation pit and adapt to different soil conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the enclosure structure in an embodiment of the present utility model;

[0021] Figure 2 This is a top view of the enclosure structure in an embodiment of this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of the enclosure structure in an embodiment of this utility model.

[0023] In the above attached figures: 1. Steel protective plate; 11. Enclosure cavity; 2. Steel pipe pile; 21. Mounting base; 3. Mounting groove; 4. Reinforcing rod; 5. Fixing groove; 6. Fixing rod; 7. Sliding block; 8. Compression spring; 9. Connecting hole; 10. Bolt. Detailed Implementation

[0024] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0025] See Figures 1 to 3 This utility model provides a foundation pit retaining structure, including:

[0026] Multiple steel protective plates 1;

[0027] The first connection structure includes two steel pipe piles 2 arranged alternately and two mounting seats 21 arranged vertically on the steel pipe piles 2, with the first ends of two adjacent steel guard plates 1 located on the corresponding mounting seats 21;

[0028] The second connecting structure connects the tail ends of two adjacent steel guard plates 1;

[0029] Among them, multiple steel guard plates 1 are connected end to end in sequence to form an enclosing cavity 11.

[0030] In this embodiment, four steel protective plates 1 are connected by two first connecting structures. The first connecting structure includes two steel pipe piles 2 arranged diagonally. Mounting seats 21 are provided at the upper and lower ends of the steel pipe piles 2. The first ends of two pairs of steel protective plates 1 are inserted between the two mounting seats 21 from top to bottom. Then, the tail ends of the two steel protective plates 1 are fixedly connected by a second connecting structure to form a retaining cavity 11. This retaining structure forms the foundation pit retaining cavity 11 by connecting two steel pipe piles 2, two second connecting structures and four steel protective plates 1. Prefabricated steel protective plates 1 can be used, which is convenient for quick on-site assembly and improves construction efficiency. Furthermore, the number of steel protective plates 1 and steel pipe piles 2 can be increased according to the actual retaining needs on site to meet the retaining needs of foundation pits of different sizes.

[0031] The two mounting bases 21 are provided with connected mounting grooves 3, and the mounting base 21 at the lower end has a sealing part, and the steel guard plate 1 is detachably inserted into the mounting groove 3.

[0032] In this embodiment, the upper and lower mounting bases 21 are provided with a connected mounting groove 3. The steel guard plate 1 can be inserted into the mounting groove 3 from top to bottom, which is convenient for installation and disassembly. The bottom of the lower mounting base 21 is provided with a sealing structure to prevent the steel guard plate 1 inserted into the mounting groove 3 from falling downward under the action of gravity or other external forces.

[0033] The lower end of the steel guard plate 1 is tapered.

[0034] In this embodiment, the bottom of the mounting base 21 at the lower end is not sealed, allowing the steel guard plate 1 to be inserted into the soil layer. The conical lower end of the steel guard plate 1 has a guiding function, making it easier for the steel guard plate 1 to be inserted into the stratum, especially under relatively loose geological conditions such as soft soil or sand layers. At the same time, it is also beneficial to reduce the disturbance to the surrounding soil during construction and maintain the stability of the soil around the foundation pit.

[0035] The enclosure structure also includes reinforcing members, which are multiple reinforcing rods 4 connecting adjacent steel guard plates 1.

[0036] In this embodiment, two reinforcing rods 4 are provided on the steel protective plate 1 to enhance the rigidity and stability of the overall structure. The two reinforcing rods 4 are set at an angle to the steel protective plate 1 and are connected to adjacent steel protective plates 1, which play a supporting and tying role, significantly improving the overall rigidity and deformation resistance of the enclosure structure. This helps to transmit and disperse the lateral pressure from the soil over a wider range, avoiding damage to a single steel protective plate 1 caused by local stress concentration.

[0037] The reinforcement also includes:

[0038] The fixing groove 5 is provided on the steel guard plate 1;

[0039] The fixing rod 6 passes through the mounting groove 3;

[0040] Two sliders 7 are spaced apart from the fixed rod 6, and the reinforcing rod 4 is rotatably mounted on the sliders 7.

[0041] In this embodiment, a fixing groove 5 is provided on the steel guard plate 1 for installing a fixing rod 6. Two sliders 7 are spaced apart on the fixing rod 6, and a reinforcing rod 4 is rotatably mounted on the sliders 7. The sliders 7 can slide freely on the fixing rod 6. The reinforcing rod 4 can adjust its position by connecting with the sliders 7 and can be rotated and finely adjusted on the sliders 7. The combination of the sliders 7 and the fixing rod 6 not only enhances the stability of a single steel guard plate 1, but also effectively disperses soil pressure and reduces local stress concentration. The reinforcing rod 4 can share some of the external force, reduce the stress concentration of a single guard plate, and thus improve the overall strength.

[0042] A compression spring 8 is fitted onto the fixed rod 6, and the two ends of the compression spring 8 are connected to the corresponding slider 7.

[0043] In this embodiment, a compression spring 8 is sleeved on the fixed rod 6, and the two ends of the compression spring 8 are connected to two sliders 7.

[0044] When uneven settlement or lateral deformation occurs in the soil around the foundation pit, the relative displacement of the sliders 7 is achieved by the compression or extension of the compression springs 8 between the sliders 7, which avoids damage to the connecting structure due to rigid constraints. The compression springs 8 can also absorb some energy, reducing the impact on the steel guard plate 1 and the reinforcing rod 4, and improving the safety and durability of the overall system. The four compression springs 8 working together can form a continuous elastic support system between the eight sliders 7, which helps to evenly distribute the load and prevent local instability.

[0045] The second connection structure consists of two connection holes 9 located on adjacent steel guard plates 1, which are connected to each other for bolts 10 to lock in place.

[0046] In this embodiment, a rigid connection is achieved through connecting hole 9 and bolt 10. The structure is simple, the force is clear, no welding is required, the installation and disassembly efficiency is high, and it is suitable for rapid support and reuse.

[0047] The lower end of the steel pipe pile 2 has a conical structure.

[0048] In this embodiment, the tapered end can effectively guide the steel pipe pile 2 to penetrate in the set direction, reduce deviation, improve construction accuracy, and when dismantling this retaining structure, the steel pipe pile 2 can be directly pulled out to ensure the integrity of the retaining structure and enable it to be put back into use quickly.

[0049] 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 foundation pit retaining structure, characterized in that, include: Multiple steel protective plates; The first connection structure includes two steel pipe piles arranged alternately and two mounting seats arranged vertically on the steel pipe piles, with the first ends of two adjacent steel protective plates located on the corresponding mounting seats; The second connecting structure connects the tail ends of two adjacent steel guard plates; The steel protective plates are connected end to end in sequence to form an enclosing cavity.

2. The foundation pit retaining structure according to claim 1, characterized in that, The two mounting seats are provided with connected mounting slots, and the mounting seat at the lower end has a sealing part, and the steel guard plate is detachably inserted into the mounting slot.

3. The foundation pit retaining structure according to claim 1, characterized in that, The lower end of the steel guard plate is tapered.

4. The foundation pit retaining structure according to claim 2, characterized in that, The enclosure structure also includes reinforcing members, which are multiple reinforcing rods connecting adjacent steel protective plates.

5. The foundation pit retaining structure according to claim 4, characterized in that, The reinforcement also includes: A fixing groove is provided in the steel protective plate; A fixing rod passes through the mounting groove; Two sliders are spaced apart from the fixed rod, and the reinforcing rod is rotatably mounted on the sliders.

6. The foundation pit retaining structure according to claim 5, characterized in that, A compression spring is fitted onto the fixed rod, and the two ends of the compression spring are connected to the corresponding sliders.

7. The foundation pit retaining structure according to claim 1, characterized in that, The second connection structure consists of two connection holes located on adjacent steel guard plates, which are connected for bolt locking.

8. The foundation pit retaining structure according to claim 1, characterized in that, The lower end of the steel pipe pile has a tapered structure.

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