A construction structure and method for secondary excavation and support of deep foundation pits

Abstract

The present invention belongs to the technical field of deep foundation pits, and particularly relates to a construction structure and method for secondary excavation and support of deep foundation pits, including two support piles, a rotating block and two moving columns. The moving columns are located on both sides of the rotating block, and the rotating block and the moving columns are located between the two support piles on the opposite side. Both sides of the rotating block are fixedly connected with screw rods, and threaded grooves matched with the screw rods are formed inside the moving columns. Limit blocks are movably connected to the opposite sides of the two moving columns. Through the combined use of the rotating block, the screw rod, the threaded groove, the moving column and the limit block, the user rotates the rotating block to make the screw rod move along the threaded groove. The screw rod drives the moving column, and the movement of the moving column drives the limit block, and the limit block is clamped into the inside of the clamping groove to achieve connection and fixation, solving the problem that the connection between the existing support piles adopts a welding method, and this connection method is too cumbersome.

Description

Technical Field

[0001] The invention belongs to the technical field of deep foundation pits, and particularly relates to a construction structure for secondary excavation and support of a deep foundation pit. Background Art

[0002] When a deep foundation pit is excavated for the second time, support piles are required. During the excavation process of the foundation pit and the use period of the foundation pit, the support piles maintain the stability of the soil mass in the open space to ensure the safety of construction. The existing connection between support piles adopts a welding method. This connection method not only takes a long time and is cumbersome to operate, but also is prone to quality problems due to incomplete and imperfect welds. Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the invention provides a construction structure and method for secondary excavation and support of a deep foundation pit, which has the advantage of being convenient for connection.

[0004] The technical solution adopted by the invention to achieve the above purpose is: a construction structure for secondary excavation and support of a deep foundation pit, including two support piles, a rotating block and two moving columns, characterized in that: the moving columns are located on both sides of the rotating block, the rotating block and the moving columns are located between the opposite sides of the two support piles, both sides of the rotating block are fixedly connected with screw rods, threaded grooves matching with the screw rods are arranged inside the moving columns, limiting blocks are movably connected to the opposite sides of the two moving columns, and the opposite sides of the two moving columns are in contact with the surfaces of the support piles.

[0005] Preferably, limiting grooves matching with the limiting blocks are arranged inside the support piles, and the opposite sides of the two limiting blocks penetrate into the inside of the limiting grooves.

[0006] Preferably, rotating shafts are arranged inside the limiting blocks, and the opposite sides of the two rotating shafts are movably connected with the moving columns.

[0007] Preferably, connecting rods are arranged inside the screw rods. The opposite sides of the two connecting rods are fixedly connected with the inner walls of the moving columns. The opposite sides of the two connecting rods are fixedly connected with fixing blocks. Grooves matching with the fixing blocks and the connecting rods are arranged inside the screw rods. The opposite sides of the two connecting rods penetrate into the inside of the grooves and are fixedly connected with the fixing blocks.

[0008] Preferably, protective plates are fixedly connected to the opposite sides of the two rotating blocks. Sliding grooves matching with the protective plates are arranged inside the moving columns. The opposite sides of the two protective plates penetrate into the inside of the sliding grooves.

[0009] Preferably, anti-slip lines are arranged on the surface of the rotating block.

[0010] A method for secondary excavation and support construction of a deep foundation pit, characterized in that a limit block is inserted into the interior of a limit groove, and then the user rotates the rotating block, the rotation of the rotating block drives the screw rod, the rotation of the screw rod drives the moving column, and the rotation of the moving column drives the limit block, so that the limit block and the interior of the limit groove are completely fitted, and as the connecting rod rotates, the protective plate is gradually exposed, and rainwater will not fall on the surface of the screw rod to cause corrosion on rainy days.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention arranges a rotating block, a screw, a threaded groove, a movable column and a limit block for coordinated use. The user rotates the rotating block to make the screw move along the threaded groove. The screw drives the movable column, and the movement of the movable column drives the limit block. The limit block is inserted into the groove to achieve connection and fixation, thereby solving the problem that the existing connection between the supporting piles is carried out by welding, which is too cumbersome.

[0013] 2. The present invention sets a limit block and a limit groove for use in combination. The limit block is inserted into the limit groove to prevent the mobile column from being fixed, thereby achieving support for two supporting piles.

[0014] 3. The present invention sets a rotating shaft. Since the limiting block and the limiting groove are in a square shape, the movement of the movable column is prevented from driving the limiting block to move, thereby preventing the movable column from being stuck by the limiting block and the limiting groove.

[0015] 4. The present invention prevents the movable column from moving too long and out of the range of the screw rod by setting the connecting rod, the fixing block and the groove for coordinated use, thereby achieving the function of limiting the movable column.

[0016] 5. The present invention provides a protective plate to prevent rainwater from falling on the surface of the screw and corroding it, thereby extending the service life of the screw and the thread groove and allowing for recycling.

[0017] 6. The present invention increases the friction when the user rotates the rotating block by providing anti-slip grooves, thereby preventing the user from slipping when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 is a top view of the support pile, the rotating block and the moving column of the present invention;

[0020] Figure 3 It is a front cross-sectional view of the structure of the present invention.

[0021] In the figure: 1, support pile; 2, rotating block; 3, moving column; 4, screw; 5, thread groove; 6, limiting block; 7, limiting groove; 8, rotating shaft; 9, connecting rod; 10, fixing block; 11, groove; 12, protective plate; 13, sliding groove; 14, anti-slip pattern. Detailed implementation mode

[0022] In order to further understand the content, features and effects of the present invention, the following embodiments are cited and described in detail in conjunction with the accompanying drawings.

[0023] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Embodiment 1

[0025] As Figures 1 to 3 shown, a deep foundation pit secondary excavation and support construction structure includes two support piles 1, a rotating block 2 and two moving columns 3. The moving columns 3 are located on both sides of the rotating block 2. The rotating block 2 and the moving columns 3 are located between the opposite sides of the two support piles 1. Screw rods 4 are fixedly connected to both sides of the rotating block 2. Thread grooves 5 that cooperate with the screw rods 4 are provided inside the moving columns 3. Limiting blocks 6 are movably connected to the opposite sides of the two moving columns 3, and the opposite sides of the two moving columns 3 are in contact with the surfaces of the support piles 1.

[0026] Refer to Figure 3 , a limiting groove 7 that cooperates with the limiting block 6 is provided inside the support pile 1, and the opposite sides of the two limiting blocks 6 penetrate into the inside of the limiting groove 7.

[0027] Adopting the above scheme: By setting the cooperation of the limiting block 6 and the limiting groove 7, the limiting block 6 is stuck into the inside of the limiting groove 7 to prevent the moving column 3 from being fixed, so as to realize the support for the two support piles 1.

[0028] Refer to Figure 3 , a rotating shaft 8 is provided inside the limiting block 6, and the opposite sides of the two rotating shafts 8 are movably connected to the moving column 3.

[0029] Adopting the above scheme: By setting the rotating shaft 8, since the shapes of the limiting block 6 and the limiting groove 7 are square, it is prevented that the movement of the moving column 3 drives the limiting block 6 to move, achieving the effect of preventing the moving column 3 from being stuck by the limiting block 6 and the limiting groove 7.

[0030] Refer to Figure 3 , a connecting rod 9 is provided inside the screw rod 4. The opposite sides of the two connecting rods 9 are fixedly connected to the inner walls of the moving columns 3. The opposite sides of the two connecting rods 9 are fixedly connected to a fixing block 10. Grooves 11 that cooperate with the fixing block 10 and the connecting rod 9 are provided inside the screw rod 4. The opposite sides of the two connecting rods 9 penetrate into the inside of the grooves 11 and are fixedly connected to the fixing block 10.

[0031] Adopting the above solution: By setting the combined use of the connecting rod 9, the fixing block 10 and the groove 11, the movement length of the moving column 3 is prevented from being too long and getting out of the range of the screw rod 4, achieving the function of limiting the moving column 3.

[0032] Reference Figure 3 , on opposite sides of the two rotating blocks 2, protective plates 12 are fixedly connected. A sliding groove 13 for cooperating with the protective plates 12 is formed inside the moving column 3, and opposite sides of the two protective plates 12 penetrate into the inside of the sliding groove 13.

[0033] Adopting the above solution: By setting the protective plate 12, rainwater is prevented from falling on the surface of the screw rod 4 to cause corrosion, so that the service life of the screw rod 4 and the thread groove 5 is long and it has the advantage of being recyclable.

[0034] Reference Figure 3 , anti-slip patterns 14 are formed on the surface of the rotating block 2.

[0035] Adopting the above solution: By setting the anti-slip patterns 14, the friction force is increased when the user rotates the rotating block 2, preventing the user from slipping during rotation.

[0036] Embodiment 2

[0037] The using method of the construction structure for the secondary excavation and support of deep foundation pits described in Embodiment 1:

[0038] During use, the user snaps the limiting block 6 into the limiting groove 7, and then the user rotates the rotating block 2. The rotation of the rotating block 2 drives the screw rod 4, the rotation of the screw rod 4 drives the moving column 3, and the rotation of the moving column 3 drives the limiting block 6, so that the limiting block 6 fits completely inside the limiting groove 7. As the connecting rod 9 rotates, the protective plate 12 gradually appears, and rainwater will not fall on the surface of the screw rod 4 to cause corrosion on rainy days.

[0039] In summary: For the construction structure for the secondary excavation and support of deep foundation pits, by setting the combined use of the support piles 1, rotating blocks 2, moving columns 3, screw rods 4, thread grooves 5, limiting blocks 6, limiting grooves 7, rotating shafts 8, connecting rods 9, fixing blocks 10, grooves 11, protective plates 12, sliding grooves 13 and anti-slip patterns 14, the problem that the connection between existing support piles uses welding, which is too cumbersome, is solved.

[0040] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method of using a construction structure for secondary excavation and support of a deep foundation pit, comprising two support piles (1), a rotating block (2) and two moving columns (3), characterized in that: The surface of the rotating block (2) is provided with anti-slip lines (14). The moving columns (3) are located on both sides of the rotating block (2). The rotating block (2) and the moving columns (3) are between the opposite sides of the two support piles (1). Both sides of the rotating block (2) are fixedly connected with screw rods (4). Thread grooves (5) matched with the screw rods (4) are formed in the moving columns (3). Limit blocks (6) are movably connected to the opposite sides of the two moving columns (3), and the opposite sides of the two moving columns (3) are in contact with the surfaces of the support piles (1). Limit grooves (7) matched with the limit blocks (6) are formed in the support piles (1). The opposite sides of the two limit blocks (6) penetrate into the interiors of the limit grooves (7). A rotating shaft (8) is arranged inside the limit block (6). The opposite sides of the two rotating shafts (8) are movably connected to the moving column (3). A connecting rod (9) is arranged inside the screw rod (4). The opposite sides of the two connecting rods (9) are fixedly connected to the inner walls of the moving columns (3). Fixing blocks (10) are fixedly connected to the opposite sides of the two connecting rods (9). Grooves (11) matched with the fixing blocks (10) and the connecting rods (9) are formed in the screw rods (4). The opposite sides of the two connecting rods (9) penetrate into the interiors of the grooves (11) and are fixedly connected to the fixing blocks (10). Protective plates (12) are fixedly connected to the opposite sides of the two rotating blocks (2). Chute grooves (13) matched with the protective plates (12) are formed in the moving columns (3). The opposite sides of the two protective plates (12) penetrate into the interiors of the chute grooves (13). The using method is as follows: insert the limit block (6) into the limit groove (7), and then the user rotates the rotating block (2). The rotation of the rotating block (2) drives the screw rod (4). The rotation of the screw rod (4) drives the moving column (3). The rotation of the moving column (3) drives the limit block (6) to make the limit block (6) fit completely with the interior of the limit groove (7). As the connecting rod (9) rotates, the protective plate (12) gradually appears. In rainy days, rainwater will not fall on the surface of the screw rod (4) to cause corrosion.

Images