Supporting structure for deep foundation pit construction

Abstract

The utility model discloses a deep foundation pit construction supporting structure which comprises two sets of bottom plates, supporting plates are arranged on the sides, away from each other, of the two sets of bottom plates, reinforcing plates are arranged on the sides, away from each other, of the two sets of supporting plates, and reinforcing assemblies are oppositely arranged on the front sides and the rear sides of the two sets of reinforcing plates. During use, the positions, on the outer sides of the two adjusting rods, of the two bottom plates are adjusted according to needs, then the positions of the bottom plates are fixed through positioning bolts, and therefore the width of the device is adjusted, the supporting effect on the periphery of a foundation pit is guaranteed, and adjustment is conveniently conducted according to the width of the foundation pit; the inserting rods are inserted into the wall face around the foundation pit through the threaded structures to fix the device, the friction force and the anti-sliding capacity between the bottom plate and the bottom pit are increased through the positioning cones, the bottom plate can be effectively prevented from sliding or displacing in the using process by being inserted into the bottom of the bottom pit, and the stability of the whole supporting structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit construction technology, specifically a support structure for deep foundation pit construction. Background Technology

[0002] A foundation pit is a pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. For deeper excavations or those near buildings, foundation pit wall support methods, shotcrete wall protection methods, and even large foundation pits can use methods such as underground continuous walls and interlocking column-type bored piles to prevent the outer soil layer from collapsing.

[0003] CN117536241A discloses a support structure and operation method for deep foundation pit construction, including a deep foundation pit body. A support device is provided on the deep foundation pit body. The support device includes a main board mechanism, an installation mechanism, an adjustment mechanism, and an auxiliary mechanism. The main board mechanism is equipped with an installation mechanism. The method involves aligning a first through hole and a second through hole, and screwing a limiting rod into the first and second through holes to fix a slider into a groove. The support plate pulls a fixing plate, and the fixing plate pulls a telescopic rod via a rotating shaft to adapt to the width of the deep foundation pit body. A new groove is inserted into the top of the fixing plate inside the deep foundation pit body. The installation through hole on the new groove is aligned with the installation through hole on the fixing plate, and the fixing rod is screwed into the installation through hole to fix the two support plates together, improving the stability of the entire device and facilitating the adjustment of the support plate height. However, the above device structure is relatively simple and cannot be adjusted according to different foundation pit widths during use. Furthermore, the stability of the support device cannot be guaranteed during use. Therefore, we propose a support structure for deep foundation pit construction. Utility Model Content

[0004] The purpose of this utility model is to provide a support structure for deep foundation pit construction to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support structure for deep foundation pit construction, comprising two sets of bottom plates:

[0006] Both sets of base plates are provided with support plates on the opposite sides, and both sets of support plates are provided with reinforcement plates on the opposite sides. Reinforcing components are provided on the front and rear sides of both sets of reinforcement plates, and two sets of adjustment components are inserted between the two sets of base plates.

[0007] Preferably, each of the two sets of base plates has two sets of support bars on its upper surface, and all four sets of support bars are set as oblique structures, with the upper end of the support bars connected to the support plate to enhance the support effect.

[0008] Preferably, multiple sets of reinforcing strips are provided between the two sets of support plates and the two sets of reinforcing plates, and the multiple sets of reinforcing strips are all set in an X-shaped structure to ensure the stability of the support.

[0009] Preferably, multiple sets of V-shaped protrusions are provided on the opposite sides of the two sets of reinforcing plates to ensure the contact area between the reinforcing plates and the foundation pit.

[0010] Preferably, positioning cones are provided at the four corners of the lower surface of both sets of base plates to facilitate fixing the base plates to the bottom of the foundation pit.

[0011] Preferably, all four sets of reinforcement components include positioning plates, and each positioning plate has a rod inserted into its center via a threaded structure. The right end of the rod is provided with a handle, and the left end of the rod is provided with a tapered structure to ensure the installation of the reinforcement plate and the foundation pit wall.

[0012] Preferably, the adjustment assembly includes two sets of adjustment rods, which are movably inserted into the two sets of base plates on the side that are close to each other. Both ends of the two sets of adjustment rods are provided with limit blocks, and the upper surfaces of the two sets of base plates are provided with positioning bolts on the side that are close to each other, so as to facilitate the adjustment of the length of the device as needed.

[0013] This utility model has at least the following beneficial effects:

[0014] With the addition of an adjustment mechanism, the position of the two sets of base plates outside the two sets of adjustment rods can be adjusted as needed during use. The position of the base plates is then fixed by positioning bolts, thereby adjusting the width of the device to ensure the support effect around the foundation pit and making it easy to adjust according to the width of the foundation pit.

[0015] By incorporating reinforcing components and positioning cones, the insertion rod is inserted into the wall surrounding the pit through a threaded structure by rotating the handle, thus fixing the device in place. The positioning cones increase the friction and anti-slip capability between the base plate and the pit. By inserting into the bottom of the pit, the positioning cones effectively prevent the base plate from sliding or shifting during use, thereby improving the stability of the entire support structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the reinforcement component structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the base plate of this utility model.

[0020] In the diagram: 1. Base plate; 2. Support plate; 3. Support strip; 4. Reinforcing strip; 5. Reinforcing plate; 6. Positioning cone; 7. Positioning plate; 8. Insert rod; 9. Turn handle; 10. Adjusting rod; 11. Positioning bolt. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a support structure for deep foundation pit construction, comprising two sets of bottom plates 1:

[0023] Support plates 2 are provided on the opposite sides of the two sets of base plates 1, and reinforcing plates 5 are provided on the opposite sides of the two sets of support plates 2. Reinforcing components are provided on the front and rear sides of the two sets of reinforcing plates 5, and two sets of adjustment components are inserted between the two sets of base plates 1.

[0024] Two sets of support bars 3 are provided on the upper surface of each of the two sets of base plates 1, and all four sets of support bars 3 are set as diagonal structures. The upper ends of the support bars are connected to the support plates. The diagonal support bars 3, base plates 1 and support plates 2 form a stable triangular force-bearing structure. When the soil around the foundation pit generates lateral pressure, the diagonal support bars can more effectively transfer this force to the support plates, and then the support plates can evenly distribute it to the entire support structure. Compared with simple vertical or horizontal support, this diagonal connection method makes the force transmission path more direct and reasonable, reduces the phenomenon of local stress concentration, and can better cope with complex load conditions.

[0025] Multiple sets of reinforcing strips 4 are installed between the two sets of support plates 2 and the two sets of reinforcing plates 5, and all sets of reinforcing strips 4 are set in an X-shape. The X-shaped reinforcing strips 4 can effectively resist shear force. In deep foundation pit support structures, due to the effects of soil pressure and water pressure, the support structure will be subjected to large shear loads. The X-shaped arrangement makes the reinforcing strips have good shear stiffness in both directions. Compared with reinforcing strips in a single direction, they can better bear and disperse shear force, and prevent relative shear slippage between the support plates and the reinforcing plates. The cross arrangement of the X-shaped reinforcing strips 4 forms a mesh-like structure, which greatly increases the overall bending stiffness of the combined structure of the support plates and the reinforcing plates. When the support structure is subjected to bending moment, such as bending moment caused by surcharge around the foundation pit or uneven settlement, the reinforcing strips can effectively share and transfer the bending moment, reducing the bending deformation of the support plates and the reinforcing plates.

[0026] On the two sets of reinforcing plates, multiple sets of V-shaped protrusions are provided on the side that is far apart from each other. The V-shaped protrusions can increase the contact area and friction between the reinforcing plate and the soil. During the construction of deep foundation pits, the soil exerts lateral earth pressure on the support structure. The V-shaped protrusions can make the soil pressure more evenly distributed on the reinforcing plate, avoid stress concentration, and thus improve the ability of the reinforcing plate to resist earth pressure.

[0027] Positioning cones 6 are installed at the four corners of the lower surface of both sets of base plates 1. The positioning cones 6 provide a clear and precise positioning reference for the installation of the base plates. During construction, when the base plates are placed at the bottom of the pit, the positioning cones can be accurately inserted into the pre-set holes or aligned with specific reference points to ensure that the base plates are accurately positioned in the horizontal and vertical directions. The positioning cones 6 increase the friction and anti-slip ability between the base plates and the pit. By inserting into the bottom of the pit, the positioning cones can effectively prevent the base plates from sliding or displacing during use, thereby improving the stability of the entire support structure.

[0028] All four sets of reinforcement components include positioning plates 7. The middle position of each positioning plate 7 is fitted with a rod 8 through a threaded structure. The right end of the rod 8 is equipped with a handle 9, and the left end of the rod 8 is a tapered structure. By rotating the handle, the rod is inserted into the wall around the pit through the threaded structure to fix the device.

[0029] The adjustment assembly includes two sets of adjustment rods 10, which are movably inserted into the two sets of base plates 1 on the side of the two sets of base plates 1 that are close to each other. Both ends of the two sets of adjustment rods 10 are provided with limit blocks, and both sides of the upper surface of the two sets of base plates 1 that are close to each other are provided with positioning bolts 11. The position of the two sets of base plates can be adjusted on the outside of the two sets of adjustment rods as needed, so as to ensure stable support for both sides of the foundation pit according to the size of the foundation pit and the width of the adjustment device.

[0030] Working principle: Adjust the position of the two sets of base plates on the outside of the two sets of adjusting rods, thereby adjusting the width of the device according to the size of the pit to ensure stable support on both sides of the pit. Then, insert the positioning cone into the appropriate position, adjust the reinforcement components, and install the device.

[0031] The motor used in this application

[0032] These are products that can be purchased directly from the market. Their principles, connection methods, and control methods are all existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] 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 support structure for deep foundation pit construction, characterized by, The utility model relates to a two-group bottom plate (1) for supporting and fixing the display stand, and the two-group bottom plate (1) is characterized by the following: Two groups of the bottom plate (1) are provided with support plates (2) on the sides away from each other, and two groups of the support plates (2) are provided with reinforcing plates (5) on the sides away from each other, two groups of the reinforcing plates (5) are provided with reinforcing assemblies on the front and back sides opposite to each other, and two groups of the bottom plate (1) are provided with two groups of adjusting assemblies.

2. The support structure for deep foundation construction according to claim 1, characterized in that: Two groups of the bottom plate (1) are provided with two groups of support strips (3) on the upper surfaces, four groups of the support strips (3) are provided in inclined structures, and the upper ends of the support strips (3) are connected with the support plates (2).

3. The retaining structure for deep foundation pit construction according to claim 1, characterized in that: Two groups of the support plates (2) and two groups of the reinforcing plates (5) are provided with multiple groups of reinforcing strips (4) therebetween, and the multiple groups of reinforcing strips (4) are provided in X-shaped structures.

4. The retaining structure for deep foundation construction according to claim 1, wherein: Two groups of the reinforcing plates (5) are provided with multiple groups of V-shaped convex strips on the sides away from each other.

5. The retaining structure for deep foundation construction according to claim 1, wherein: Two groups of the bottom plate (1) are provided with positioning cones (6) on the lower surfaces at the positions of the four corners.

6. The retaining structure for deep foundation construction according to claim 1, wherein: Four groups of the reinforcing assemblies each include a positioning sheet (7), the middle positions of the positioning sheets (7) are provided with insertion rods (8) inserted through threaded structures, the right ends of the insertion rods (8) are provided with handlebars (9), and the left ends of the insertion rods (8) are provided in conical structures.

7. The retaining structure for deep foundation construction according to claim 1, wherein: The adjusting assembly includes two groups of adjusting rods (10), two groups of the adjusting rods (10) are movably inserted on the sides close to each other of the two groups of bottom plates (1), the two ends of the two groups of adjusting rods (10) are provided with limiting blocks, and the sides close to each other of the upper surfaces of the two groups of bottom plates (1) are provided with positioning pegs (11).

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