Deep foundation pit anchor rod supporting and reinforcing device with high stability

Abstract

The utility model discloses a high stability's deep foundation pit anchor rod support reinforcement device, including grid layer, anchor rod, fixed column and surface layer, grid layer is laid in the inclined side wall of deep foundation pit, anchor rod is inserted in the inclined side wall of deep foundation pit, and the one end of anchor rod that stretches out deep foundation pit and grid layer fixedly connected, the middle part of anchor rod is provided with first external thread part, and the both ends of first external thread part are provided with multiple turns of barb, fixed column is inserted in the plane of deep foundation pit, and fixed column is made of concrete, and fixed column is wrapped first external thread part, and fixed column is fixedly connected with multiple anchor rods from top to bottom, surface layer covers grid layer, and surface layer is wrapped the end of all anchor rods, and surface layer and the inclined side wall of deep foundation pit fixedly connected. Force is transmitted to anchor rod and deep foundation pit plane foundation through fixed column, and the anti -deformation ability of whole support system is improved through the enhancement of structural integrity.

Description

Technical Field

[0001] This utility model relates to the field of slope protection structure technology, and in particular to a deep foundation pit anchor support and reinforcement device with high stability. Background Technology

[0002] In construction engineering, the sidewalls of deep foundation pits require support and reinforcement during excavation to prevent collapse, deformation, and other safety accidents, ensuring construction safety and the stability of the surrounding environment. The soil pressure distribution on the sidewalls of deep foundation pits is complex. If the stability of the support and reinforcement device is insufficient, problems such as localized stress concentration, anchor loosening or displacement, and poor overall structural load-bearing performance can easily occur, seriously affecting construction safety. In traditional deep foundation pit anchor support devices, the connection between the anchor and the pit sidewall often relies on a single anchoring structure. The mechanical interlocking force between the anchor and the surrounding soil is insufficient, making it prone to pull-out displacement under soil pressure. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a highly stable deep foundation pit anchor support reinforcement device, which can improve support stability.

[0004] A high-stability deep foundation pit anchor support and reinforcement device according to a first aspect of the present invention includes a grid layer, anchor bolts, fixing columns, and a surface layer. The grid layer is laid on the inclined sidewall of the deep foundation pit. The anchor bolts are inserted into the inclined sidewall of the deep foundation pit, with one end of the anchor bolt extending out of the deep foundation pit and fixedly connected to the grid layer. The anchor bolt has a first external thread in its middle, and multiple barbs are provided at both ends of the first external thread. The multiple barbs are spaced along the length of the anchor bolt on its shaft, with multiple barbs in the same thread and spaced around the central axis of the anchor bolt. The fixing columns are inserted into the plane of the deep foundation pit. The fixing columns are made of concrete and wrap around the first external thread. The fixing columns are fixedly connected to multiple anchor bolts from top to bottom. The surface layer covers the grid layer and wraps around the ends of all anchor bolts. The surface layer is fixedly connected to the inclined sidewall of the deep foundation pit.

[0005] According to an embodiment of the present invention, a deep foundation pit anchor support and reinforcement device with high stability has at least the following beneficial effects: firstly, a pouring groove is excavated on the plane of the deep foundation pit, then an anchor is inserted from the side wall of the deep foundation pit, so that the first external thread of the anchor is built into the pouring groove, and finally, a fixed column is formed by pouring concrete, so that the fixed column and the anchor are fixedly connected, thereby improving the structural stability of the entire support and reinforcement device.

[0006] According to some embodiments of this utility model, the end of the anchor rod inserted into the deep foundation pit is provided with a second external thread.

[0007] According to some embodiments of the present invention, the rod body of the anchor rod extending out of the deep foundation pit is provided with an annular groove, and the mesh of the mesh layer contains an annular snap-fit ​​component, which is embedded in the groove.

[0008] According to some embodiments of this utility model, a welded part is provided between the anchor rod body and the snap-fit ​​member.

[0009] According to some embodiments of the present invention, the welding part consists of multiple welding points, which are equidistantly spaced around the axis of the anchor rod.

[0010] According to some embodiments of the present invention, the snap-fit ​​component is elastic.

[0011] According to some embodiments of this utility model, the fixing post and part of the barbs are fixedly connected.

[0012] According to some embodiments of the present invention, the first external thread portion is provided with a through hole, and the through hole is arranged radially along the anchor rod.

[0013] According to some embodiments of this utility model, two perforations are provided, and the two perforations are perpendicular to each other.

[0014] According to some embodiments of this utility model, on the inclined sidewall of a deep foundation pit, the anchor rods are arranged in a matrix; along the horizontal arrangement direction of the multiple anchor rods, multiple sets of anchor rods are provided, and multiple fixing columns are provided, with each fixing column corresponding to each set of anchor rods.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of a highly stable deep foundation pit anchor bolt support and reinforcement device according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the grid layer and anchor bolts of a high-stability deep foundation pit anchor bolt support and reinforcement device according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of an anchor bolt in a high-stability deep foundation pit anchor bolt support and reinforcement device according to an embodiment of the present invention.

[0020] Figure 4This is a schematic diagram of the anchor rod and clamping component of a high-stability deep foundation pit anchor rod support and reinforcement device according to an embodiment of the present invention.

[0021] 100. Mesh layer; 110. Connector; 120. Solder joint;

[0022] 200, Anchor bolt; 210, First external thread; 220, Barb; 230, Second thread; 240, Groove; 250, Perforation;

[0023] 300. Fixed column;

[0024] 400, Surface layer; Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 3This utility model discloses a high-stability deep foundation pit anchor bolt 200 support and reinforcement device, comprising a grid layer 100, anchor bolts 200, fixing columns 300, and a surface layer 400. The grid layer 100 is laid on the inclined sidewall of the deep foundation pit; the anchor bolts 200 are inserted into the inclined sidewall of the deep foundation pit, with one end of the anchor bolt 200 extending out of the deep foundation pit and fixedly connected to the grid layer 100. The middle part of the anchor bolt 200 is provided with a first external thread portion 210, and both ends of the first external thread portion 210 are provided with multiple turns of barbs 220, which extend along the length of the anchor bolt 200. Multiple barbs 220 are arranged at intervals on the shaft of the anchor rod 200, and are arranged around the central axis of the anchor rod 200 at intervals. The fixing post 300 is inserted into the plane of the deep foundation pit. The fixing post 300 is made of concrete and wraps around the first external threaded part 210. The fixing post 300 is fixedly connected to multiple anchor rods 200 from top to bottom. The surface layer 400 covers the mesh layer 100 and wraps around the ends of all anchor rods 200. The surface layer 400 is fixedly connected to the inclined sidewall of the deep foundation pit.

[0030] In the actual construction process, a pouring trench is first excavated on the plane of the deep foundation pit, and then the grid layer 100 is laid flat on the inclined sidewall surface of the deep foundation pit. Then, the anchor rods 200 are inserted through the grid layer 100 at a preset angle, so that the anchor rods 200 are inserted into the inclined sidewall of the deep foundation pit, ensuring that the end of the anchor rod 200 extending out of the deep foundation pit is in contact with the grid layer 100, the multiple barbs 220 are in the soil of the sidewall of the deep foundation pit, and the first external thread 210 in the middle is in the pouring trench. Next, concrete is poured into the pouring trench, and after the concrete solidifies, a fixing column 300 is formed. The fixing column 300 wraps the first external thread 210 and forms a fixed connection with multiple anchor rods 200. Finally, the surface layer 400 is covered on the outside of the grid layer 100 (the surface layer 400 is formed by pouring concrete), so that the surface layer 400 completely wraps the ends of all anchor rods 200, and the edge of the surface layer 400 is fixed to the inclined sidewall of the deep foundation pit.

[0031] In summary, during the construction process described above, a pouring trench is first excavated on the plane of the deep foundation pit. Then, anchor rods 200 are inserted from the side wall of the deep foundation pit, so that the first external thread 210 of the anchor rod 200 is embedded in the pouring trench. Finally, concrete is poured to form a fixed column 300, which fixes the fixed column 300 and the anchor rod 200, thereby improving the structural stability of the entire support and reinforcement device. Among these features, the grid layer 100 can disperse the soil pressure on the side wall of the deep foundation pit and avoid local stress concentration; the multiple barbs 220 of the anchor rod 200 can enhance the mechanical interlocking force with the surrounding soil, and the first external thread 210, together with the fixed column 300, enhances the connection strength with the concrete; the fixed column 300 connects multiple anchor rods 200 into an integral structure, improving the overall rigidity of the support system; the surface layer 400, through its wrapping and fixing function, restricts the lateral displacement of the ends of the anchor rods 200, effectively constrains the displacement of the ends of the anchor rods 200, and seals the grid layer 100, further enhancing the integrity and stability of the support device.

[0032] In some embodiments, refer to Figure 1 The anchor rod 200 has a second external thread at one end inserted into the deep foundation pit. When inserting the anchor rod 200, the threaded structure of the second external thread is used to insert the anchor rod 200 into the soil of the deep foundation pit sidewall by rotation or impact, so that the second external thread is screwed into the soil, increasing the contact area and mechanical interlocking force between the anchor rod 200 and the surrounding soil, improving the pull-out resistance of the anchor rod 200 in the soil, and reducing the pull-out displacement of the anchor rod 200 under stress.

[0033] In some embodiments, refer to Figure 4 The anchor rod 200 has an annular groove 240 at one end extending out of the deep foundation pit. The mesh of the mesh layer 100 has an annular snap fastener 110 embedded in the groove 240. After the anchor rod 200 penetrates the mesh layer 100, the annular snap-fit ​​member 110 within the mesh of the mesh layer 100 is aligned with the slot 240 at the end of the anchor rod 200, so that the snap-fit ​​member 110 is embedded in the slot 240, thereby achieving the connection and fixation between the mesh layer 100 and the anchor rod 200. Furthermore, a welded portion is provided between the anchor rod 200 and the snap-fit ​​member 110. After the snap-fit ​​member 110 is embedded in the slot 240, a welded portion is formed at the contact point between the anchor rod 200 and the snap-fit ​​member 110 through a welding process, thus welding and fixing the two together. This further enhances the connection strength and rigidity between the anchor rod 200 and the snap-fit ​​member 110, avoiding the loosening problem that may occur with simple snap-fit, and ensuring that the connection can withstand greater stress transmission. Preferably, refer to... Figure 4The welding part consists of multiple weld points 120, which are equidistantly spaced around the axis of the anchor rod 200. This ensures a uniform distribution of welding force between the anchor rod 200 and the snap-fit ​​member 110, avoiding excessive local stress caused by concentrated weld points 120 and reducing the risk of deformation or breakage at the connection point.

[0034] Furthermore, in the above embodiments, reference is made to Figure 3 and Figure 4 To facilitate the engagement between the snap-fit ​​component 110 and the slot 240, the snap-fit ​​component 110 is elastic. During installation, the snap-fit ​​component 110 is slightly opened using its elastic properties, allowing it to smoothly fit onto the anchor rod 200 and align with the slot 240. After being released, the snap-fit ​​component 110 elastically returns to its original position, tightly embedding itself into the slot 240. This simplifies the installation process between the snap-fit ​​component 110 and the slot 240. Simultaneously, the elastically returned snap-fit ​​component 110 and the slot 240 form a pre-tightening force, enhancing the secure engagement and reducing the probability of loosening.

[0035] In some embodiments, when pouring concrete for the fixing column 300, it is ensured that part of the barbs 220 are within the pouring area. After the concrete solidifies, it wraps around and fixes the barbs 220, forming a fixed connection between the fixing column 300 and the barbs 220. The fixed connection between the barbs 220 and the fixing column 300 increases the mechanical interlocking area and shear resistance between the anchor rod 200 and the fixing column 300, prevents relative rotation or sliding between the anchor rod 200 and the fixing column 300, and improves the overall connection strength.

[0036] It is important to emphasize that the first external threaded portion 210 is perforated with a through hole 250, which is arranged radially along the anchor rod 200. During the pouring of concrete for the fixing column 300, the concrete passes through the through hole 250 and the first external threaded portion 210, forming a concrete column within the through hole 250. After the concrete solidifies, the concrete within the through hole 250 becomes integral with the main body of the fixing column 300. The concrete within the through hole 250 creates a "pin" connection between the fixing column 300 and the anchor rod 200, further restricting the relative rotation between the anchor rod 200 and the fixing column 300, enhancing the torque transmission capacity and overall connection strength. Furthermore, two through holes 250 are provided, and the two through holes 250 are perpendicular to each other. The perpendicular concrete "pin" structure provides more comprehensive torsional resistance and superior connection stability.

[0037] In some embodiments, refer to Figure 2On the sloping sidewall of the deep foundation pit, the anchor bolts 200 are arranged in a matrix. Multiple groups of anchor bolts 200 are provided along the horizontal arrangement direction, and multiple fixing columns 300 are provided, with each fixing column 300 corresponding to each group of anchor bolts 200. The matrix arrangement of the anchor bolts 200 ensures uniform stress distribution on the sidewall of the deep foundation pit, avoiding weak areas in the local support. The fixing columns 300 and anchor bolts 200 are connected in corresponding groups to form multiple lateral support systems, improving the overall rigidity and deformation resistance of the support device.

[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-stability deep foundation pit anchor bolt (200) support and reinforcement device, characterized in that, include: A grid layer (100) is laid on the sloping sidewalls of the deep foundation pit; An anchor rod (200) is inserted into the inclined sidewall of a deep foundation pit. One end of the anchor rod (200) extending out of the deep foundation pit is fixedly connected to the grid layer (100). The middle part of the anchor rod (200) is provided with a first external thread (210). Both ends of the first external thread (210) are provided with multiple rings of barbs (220). The multiple rings of barbs (220) are spaced along the length direction of the anchor rod (200) on the rod body. Multiple barbs (220) are provided in the same ring and are spaced around the central axis of the anchor rod (200). A fixing post (300) is inserted into the plane of the deep foundation pit. The fixing post (300) is made of concrete. The fixing post (300) wraps around the first external threaded part (210). The fixing post (300) is fixedly connected to multiple anchor rods (200) from top to bottom. A surface layer (400) covers the mesh layer (100), the surface layer (400) wraps around the ends of all anchor bolts (200), and the surface layer (400) is fixedly connected to the inclined sidewall of the deep pit.

2. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 1, characterized in that, The anchor rod (200) has a second external thread at one end inserted into the deep foundation pit.

3. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 1, characterized in that, The anchor rod (200) has an annular groove (240) at one end extending out of the deep foundation pit. The mesh of the grid layer (100) has an annular snap fastener (110) embedded in the groove (240).

4. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 3, characterized in that, A welded part is provided between the rod body of the anchor rod (200) and the snap-fit ​​member (110).

5. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 4, characterized in that, The welding part consists of multiple welding points (120), which are equidistantly spaced around the axis of the anchor rod (200).

6. A high-stability deep foundation pit anchor bolt (200) support and reinforcement device according to claim 3 or 4, characterized in that, The snap-fit ​​element (110) is elastic.

7. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 1, characterized in that, The fixed post (300) and part of the barbs (220) are fixedly connected.

8. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 1, characterized in that, The first external threaded portion (210) is provided with a through hole (250), which is arranged radially along the anchor rod (200).

9. A high-stability deep foundation pit anchor bolt (200) support and reinforcement device according to claim 8, characterized in that, Two perforations (250) are provided, and the two perforations (250) are perpendicular to each other.

10. The deep foundation pit anchor bolt (200) support and reinforcement device with high stability according to claim 1, characterized in that, On the sloping sidewall of the deep foundation pit, the anchor bolts (200) are arranged in a matrix; along the horizontal arrangement direction of the multiple anchor bolts (200), there are multiple sets of anchor bolts (200), and multiple fixing columns (300) are provided, with each fixing column (300) and each set of anchor bolts (200) corresponding to each other.

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