A foundation pit support device

Abstract

This application relates to the technical field of foundation pit support, and in particular to a foundation pit support device, comprising a steel waler, which is rectangular with rounded inner corners; a corner pad with an arc-shaped surface that fits against the inner corner of the steel waler, and the corner pad is connected to the steel waler; a connecting member located at the end of the corner pad away from the steel waler, with both ends of the connecting member connected to the steel waler; and an elastic member connected to the connecting member, with the end of the elastic member away from the connecting member connected to the steel waler. This application has the effect of enhancing the structural stability of the support device.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit support, and in particular to a foundation pit support device. Background Technology

[0002] Traditional steel supports for foundation pits are mostly welded on-site, which leads to problems such as low construction efficiency, unstable quality, and significant safety hazards. A current Chinese patent (CN219586745U) proposes a foundation pit support device, specifically disclosing a steel waler and corner bracing components installed at the straight corners of the steel waler. The steel waler is supported at the corners by the corner bracing components, which include corner pads, two triangular connecting blocks, and connecting columns, and are fixed to the corners of the steel fence with bolts.

[0003] However, under extreme loads (such as asymmetric earth pressure or seismic action), stress concentration is prone to occur in the right-angle transition area, leading to local deformation or even fracture of the connecting block or connecting column, which seriously affects the overall stability of the support structure. In addition, the bending and torsional resistance of solid connecting columns is limited and it is difficult to adapt to complex stress states. The rigid connection between the steel fence and the connecting column is prone to transmitting impact loads, further aggravating structural fatigue. Utility Model Content

[0004] To enhance the structural stability of the support device, this application provides a foundation pit support device.

[0005] This application provides a foundation pit support device, which adopts the following technical solution:

[0006] A foundation pit support device, comprising:

[0007] The steel waler is rectangular with rounded inner corners; the corner pad has an arc-shaped surface that fits into the inner corner of the steel waler and is connected to the steel waler; the connector is located at the end of the corner pad away from the steel waler and is connected to the steel waler at both ends.

[0008] The elastic element is connected to the connecting element, and the end of the elastic element away from the connecting element is connected to the steel waler.

[0009] By adopting the above technical solutions, the rounded corner design of the steel waler effectively reduces stress concentration and lowers the risk of local deformation or fracture; the arc-shaped corner pad fits into the inner corner of the steel waler, further optimizing the force transmission path; the two ends of the connector are connected to the steel waler respectively to form a stable support structure; the elastic element absorbs impact energy and reduces fatigue damage caused by rigid connection, thereby significantly improving the overall stability and durability of the foundation pit support device.

[0010] Optionally, the inner wall of the steel waler is provided with an installation groove. The connector includes a connecting column and a connecting block. The connecting column is connected to the connecting block. The connecting blocks are symmetrically arranged at both ends of the connecting column. The connecting blocks are inserted into the installation groove. The top wall and bottom wall of the connecting block are respectively abutted against the top wall and bottom wall of the same installation groove. A locking element is provided on one side of the connecting block. The connecting block is fixed to the steel waler by the locking element. The side of the connecting column near the connecting block is connected to the elastic element.

[0011] By adopting the above technical solution, the connectors, through the cooperation of the connecting column and the connecting block with the installation groove of the steel waler, achieve precise positioning and stable connection. At the same time, the top and bottom walls of the connecting column are respectively attached to the top and bottom walls of the installation groove, effectively dispersing the force and reducing stress concentration. The connecting block is fixed to the steel waler by the locking device, ensuring the reliability of the connection and reducing the possibility of loosening. The side of the connecting column near the connecting block is connected to the elastic element, further absorbing impact energy and reducing fatigue damage caused by rigid connection.

[0012] Optionally, the connector is provided with a weight reduction cavity, and the weight reduction cavity is provided with inner reinforcing ribs, which are distributed in a cross or honeycomb pattern.

[0013] By adopting the above technical solution, the connector is provided with a weight reduction cavity and internal reinforcing ribs arranged in a cross or honeycomb pattern, which significantly reduces the weight of the connector while improving its structural strength.

[0014] Optionally, the corner pad is provided with a corner groove, and the steel waler is inserted into the corner groove, with the groove wall fitting against the steel waler.

[0015] By adopting the above technical solution, corner grooves are opened in the corner pads, and the steel walers are inserted into the corner grooves with the groove walls fitting closely to the steel walers. This effectively increases the contact area between the corner pads and the steel walers, improves the stability of the connection between the two, reduces local stress concentration, and further enhances the overall structural strength and reliability of the foundation pit support device.

[0016] Optionally, the corner pad is connected with a reinforcing rib, the end of the reinforcing rib away from the corner pad is connected to the connector, and the reinforcing rib is connected to the steel waler.

[0017] By adopting the above technical solution, the setting of reinforcing ribs can effectively enhance the connection strength between the corner pad, the connector and the steel waler, improve the device's resistance to deformation under complex stress conditions, and thus reduce local stress concentration and structural fatigue.

[0018] Optionally, the reinforcing rib is inclined, with one end of the reinforcing rib connected to the bottom of the steel waler and the other end of the reinforcing rib away from the steel waler connected to the top of the connector.

[0019] By adopting the above technical solutions, a stable triangular support structure is formed, which significantly enhances the bending and shear resistance of the foundation pit support device under complex stress conditions, optimizes the load transfer path, reduces the local stress at the connection between the steel waler and the connector, and further extends the service life of the structure.

[0020] Optionally, the reinforcing ribs and corner pads are integrally molded.

[0021] By adopting the above technical solution, the integral molding of the reinforcing rib and corner pad can improve the connection strength and stability of the overall structure, reduce the possibility of loosening or separation that may occur with separate connections, and simplify the assembly process and improve construction efficiency.

[0022] Optionally, the curved surface has anti-slip texture.

[0023] By adopting the above technical solution, the anti-slip texture on the arc surface can increase the friction between the corner pad and the steel waler, effectively preventing relative sliding between the two during the stress process, thereby improving the reliability of the connection and ensuring the overall stability of the foundation pit support device.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The rounded corner design of the steel waler effectively reduces stress concentration and lowers the risk of local deformation or fracture; the curved corner pad fits into the inner corner of the steel waler, further optimizing the force transmission path; the two ends of the connector are connected to the steel waler to form a stable support structure; the elastic element absorbs impact energy and reduces fatigue damage caused by rigid connection, thereby significantly improving the overall stability and durability of the foundation pit support device.

[0026] 2. The connectors, through connecting columns and connecting blocks, mate with the mounting grooves of the steel waler to achieve precise positioning and stable connection. Simultaneously, the top and bottom walls of the connecting columns respectively conform to the top and bottom walls of the mounting groove, effectively distributing stress and reducing stress concentration. The connecting blocks are fixed to the steel waler by locking components, ensuring connection reliability and reducing the possibility of loosening. The side of the connecting column closest to the connecting block connects to an elastic component, further absorbing impact energy and reducing fatigue damage caused by rigid connections.

[0027] 3. The connector is equipped with a weight-reducing cavity and internal reinforcing ribs arranged in a cross or honeycomb pattern, which significantly reduces the weight of the connector while improving its structural strength. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the corner pad structure in an embodiment of this application.

[0030] Figure 3 This is a top view of the overall structure in the embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Steel waler; 11. Mounting groove; 2. Corner pad; 21. Corner groove; 211. Arc surface; 22. Locking element; 3. Elastic element; 4. Connecting column; 41. Connecting block; 42. Weight reduction cavity; 43. Inner reinforcing rib; 44. Locking element; 5. Reinforcing rib; 6. Horizontal plate. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses a foundation pit support device.

[0035] Reference Figure 1 A foundation pit support device includes a steel waler 1, a corner pad 2, a connector, and an elastic element 3. The steel waler 1 is rectangular with rounded inner corners. The corner pad 2 has an arc-shaped surface 211 that fits against the inner corner of the steel waler 1. The rounded corner design makes the stress distribution more uniform. A locking element 22 is provided on one side of the corner pad 2, and the corner pad 2 is fixedly connected to the steel waler 1 through the locking element 22. The connector is located at the end of the corner pad 2 away from the steel waler 1, and both ends of the connector are connected to the steel waler 1. The elastic element 3 is connected to the connector, and the end of the elastic element 3 away from the connector is connected to the steel waler 1. The elastic element 3 can buffer impact loads, thereby reducing stress concentration, absorbing impact energy, and improving structural stability. In this example, the locking element 22 is a bolt, and the elastic element 3 is made of high-damping rubber material.

[0036] Specifically, the steel waler 1 is welded from four steel plates, with a 45° welding line between adjacent steel plates, which facilitates cutting and assembly and improves efficiency.

[0037] Reference Figure 1 and Figure 2 The inner wall of the steel waler 1 is also provided with an installation groove 11. The length direction of the installation groove 11 is parallel to the length direction of the steel waler 1. The installation grooves 11 of adjacent steel plates are connected. The corner pad 2 is provided with a corner groove 21. The corner groove 21 is composed of a horizontal groove wall and a vertical groove wall. The arc surface 211 is a vertical groove wall of the corner groove 21. The corner groove 21 is located at the top and bottom of the corner pad 2. The steel waler 1 is inserted into the corner groove 21, so that the top wall and bottom wall of the installation groove 11 are respectively in contact with the horizontal groove walls of the two corner grooves 21. The locking member 22 is inserted into the corner groove 21 to fix the steel waler 1 and the corner pad 2.

[0038] The curved surface 211 is provided with anti-slip texture. The anti-slip texture can adopt an interlaced raised dot structure with a raised height of 1mm to 3mm and a spacing of 5mm to 10mm, which effectively increases friction and prevents slippage.

[0039] The connector includes a connecting column 4 and a connecting block 41. The connecting column 4 has a weight-reducing cavity 42, forming a hollow structure. The weight-reducing cavity 42 has inner reinforcing ribs 43, which are distributed in a cross or honeycomb pattern to reduce the weight of the connecting column 4 while enhancing its structural strength. The connecting blocks 41 are symmetrically arranged at both ends of the connecting column 4. The connecting blocks 41 are fixedly connected to the connecting column 4 and are integrally formed. The connecting blocks 41 are inserted into the mounting groove 11. The top and bottom walls of the connecting blocks 41 are respectively attached to the top and bottom walls of the same mounting groove 11. A locking element 44 is provided on the top of the connecting blocks 41. The connecting blocks 41 are fixed to the steel waler 1 by the locking element 44. The side of the connecting column 4 near the connecting blocks 41 is fixedly connected to the elastic element 3.

[0040] Specifically, after the connecting block 41 is inserted into the mounting groove 11 of the steel waler 1, the elastic element 3 on the inner wall of the steel waler 1 fits together, and the top wall of the mounting groove 11 fits together with the top wall of the connecting block 41. It is fixed by the locking element 44, which can be a high-strength bolt to ensure a stable and reliable connection.

[0041] Furthermore, the connecting block 41 can be made of high-strength aluminum alloy material and the surface is anodized to enhance wear resistance and corrosion resistance.

[0042] The corner pad 2 is fixedly connected with a reinforcing rib 5. The end of the reinforcing rib 5 away from the corner pad 2 is fixedly connected to the connecting column 4, and the end of the reinforcing rib 5 near the corner pad 2 is fixedly connected to the bottom wall of the mounting groove 11. This enhances the connection strength between the corner pad 2 and the connecting parts and the steel waler 1, improves the device's resistance to deformation under complex stress conditions, thereby reducing local stress concentration and structural fatigue. The reinforcing rib 5 can be made of high-strength steel and galvanized to enhance its corrosion resistance.

[0043] To further enhance the structural connection strength, the reinforcing rib 5 and the corner pad 2 are integrally formed to ensure a firm and reliable connection.

[0044] Reference Figure 1 and Figure 3 The reinforcing rib 5 is set at an angle. One end of the reinforcing rib 5 is fixedly connected to the bottom wall of the mounting groove 11, and the end of the reinforcing rib 5 away from the steel waler 1 is fixedly connected to the top of the connecting column 4. Specifically, the horizontal height of the end of the reinforcing rib 5 connected to the bottom wall of the mounting groove 11 is lower than the horizontal height of the end of the reinforcing rib 5 connected to the connecting column 4.

[0045] The reinforcing rib 5 is connected at the middle horizontal height position of the connecting column 4. The connecting column 4 is connected to the horizontal plate 6. The reinforcing rib 5 is symmetrically arranged on both sides of the horizontal plate 6. The end of the horizontal plate 6 away from the connecting column 4 is fixedly connected to the corner pad 2, and the end of the reinforcing rib 5 close to the connecting column 4 is fixedly connected to the horizontal plate 6, further enhancing the structural stability of the reinforcing rib 5.

[0046] The implementation principle of this embodiment is as follows: stress concentration is reduced by rounded corner design, impact energy is absorbed by elastic element 3, the hollow structure of connector and inner reinforcing rib 43 improve bending and torsional resistance, and reinforcing rib 5 further enhances local strength, thereby improving the stability and reliability of the foundation pit support device structure.

[0047] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foundation pit support device characterized by, include: The steel waler (1) is rectangular with rounded inner corners; The corner pad (2) has an arc-shaped surface (211), which fits against the inner corner of the steel waler (1), and the corner pad (2) is connected to the steel waler (1); The connector is located at the end of the corner pad (2) away from the steel waler (1), and both ends of the connector are connected to the steel waler (1); The elastic element (3) is connected to the connecting element, and the end of the elastic element (3) away from the connecting element is connected to the steel waler (1).

2. A foundation pit support device according to claim 1, wherein The inner wall of the steel waler (1) is provided with an installation groove (11). The connecting parts include a connecting column (4) and a connecting block (41). The connecting column (4) is connected to the connecting block (41). The connecting blocks (41) are symmetrically arranged at both ends of the connecting column (4). The connecting blocks (41) are inserted into the installation groove (11). The top wall and bottom wall of the connecting block (41) are respectively in contact with the top wall and bottom wall of the same installation groove (11). A locking element (44) is provided on one side of the connecting block (41). The connecting block (41) is fixed to the steel waler (1) by the locking element (44). The side of the connecting column (4) near the connecting block (41) is connected to the elastic element (3).

3. A foundation pit support device according to claim 1, characterized in that The connector is provided with a weight reduction cavity (42), and the weight reduction cavity (42) is provided with inner reinforcing ribs (43), which are distributed in a cross or honeycomb pattern.

4. The foundation pit support device according to claim 1, characterized in that, The corner pad (2) has a corner groove (21), and the steel waler (1) is inserted into the corner groove (21). The groove wall of the corner groove (21) fits against the steel waler (1).

5. The foundation pit support device according to claim 1, characterized in that, The corner pad (2) is connected with a reinforcing rib (5). The end of the reinforcing rib (5) away from the corner pad (2) is connected to the connector. The reinforcing rib (5) is connected to the steel waler (1).

6. The foundation pit support device according to claim 5, characterized in that, The reinforcing rib (5) is inclined, one end of the reinforcing rib (5) is connected to the bottom of the steel waler (1), and the end of the reinforcing rib (5) away from the steel waler (1) is connected to the top of the connector.

7. A foundation pit support device according to claim 5, characterized in that, The reinforcing rib (5) and the corner pad (2) are integrally formed.

8. A foundation pit support device according to claim 1, characterized in that, The curved surface (211) has anti-slip texture.

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