Deep foundation pit support structure and construction method

Abstract

The invention relates to the field of foundation pit enclosure, in particular to a deep foundation pit enclosure structure and a construction method.The deep foundation pit enclosure structure comprises stand columns, building blocks, clamping pieces and a mounting frame, vertical ribs are embedded in the stand columns, the upper ends of the vertical ribs extend out of the stand columns, the building blocks are connected to the upper ends of the stand columns, mounting openings are formed in the building blocks, the vertical ribs are arranged in the mounting openings, and the clamping pieces are arranged in the mounting openings. One side of the clamping piece is connected to the inner wall of the mounting opening, the other side of the clamping piece is connected to the outer wall of the vertical rib, the multiple stand columns and the multiple building blocks are arranged, the adjacent building blocks abut against each other, a mounting groove is formed in the lower end of the mounting frame, and the mounting groove is used for covering the building blocks to be embedded in. And the groove bottom of the mounting groove is used for covering the joint of the adjacent building blocks. The vertical ribs and the building blocks are relatively fixed through the clamping pieces, the adjacent building blocks are relatively fixed through the mounting frames, the overall structural strength of the building blocks is improved, the building blocks are conveniently and repeatedly used, and waste of building materials is reduced.

Description

Technical Field

[0001] The present application relates to the field of foundation pit retaining, and in particular to a deep foundation pit retaining structure and a construction method. Background Art

[0002] The deep foundation pit retaining structure is a vital part of underground engineering, which ensures the safety and stability of the foundation pit during excavation and foundation construction. There are many types of deep foundation pit retaining structures, among which the bored pile retaining structure has high rigidity and can be used in deep and large foundation pits, and the construction has little impact on the surrounding strata and environment.

[0003] The bored cast-in-place pile retaining structure is mainly composed of concrete columns, cap beams and other auxiliary components, which are used to provide necessary support and protection during the foundation pit excavation process to prevent adverse situations such as foundation pit collapse and displacement of surrounding soil.

[0004] The crown beam is usually constructed by on-site formwork casting. The crown beam and concrete column are cast and consolidated together and cannot be reused, resulting in a waste of building material resources. Summary of the invention

[0005] In order to reduce the waste of building materials, the present application provides a deep foundation pit retaining structure and a construction method.

[0006] In the first aspect, the present application provides a deep foundation pit retaining structure, which adopts the following technical solution: A deep foundation pit retaining structure comprises a column, a building block, a clamping piece and an installation frame, wherein the column is embedded with vertical ribs, the upper end of the vertical ribs extends out of the column, the building block is connected to the upper end of the column, the building block is provided with an installation opening, the vertical ribs are arranged in the installation opening, one side of the clamping piece is connected to the inner wall of the installation opening, and the other side of the clamping piece is connected to the outer wall of the vertical ribs, a plurality of columns are provided, a plurality of building blocks are provided, adjacent building blocks abut against each other, a mounting groove is provided at the lower end of the mounting frame, the mounting groove is used to cover the embedding of the building block, and the groove bottom of the mounting groove is used to cover the joint of adjacent building blocks.

[0007] By adopting the above technical solution, the clamping piece fixes the vertical reinforcement and the building block relatively, and the installation frame fixes the adjacent building blocks relatively, thereby improving the overall structural strength of the building blocks, facilitating the repeated use of the building blocks, and reducing the waste of building materials.

[0008] Preferably, the inner wall of the mounting opening is provided with a placement groove, and there are multiple placement grooves, and the multiple placement grooves are evenly spaced around the axis of the mounting opening. There are multiple clamping members, and the clamping members are arranged in a one-to-one correspondence with the placement grooves. The clamping members include a placement block, a clamping plate and a deformation block. The placement block is slidably connected in the placement groove, and the clamping plate is fixedly connected to the end of the placement block away from the bottom of the placement groove. The end of the clamping plate facing the vertical rib is set to an arc surface, and the deformation block is fixedly connected to the end of the clamping plate away from the placement block.

[0009] By adopting the above technical solution, the placement block slides to push the clamping plate to slide and clamp the vertical reinforcement, and the deformation block fills the gap between the outer wall of the vertical reinforcement to increase the friction with the vertical reinforcement, so that the building block is stably connected to the vertical reinforcement, thereby improving the overall structural strength. When the placement block is away from the vertical reinforcement, it is convenient to disassemble the building block for next use, thereby reducing the waste of building materials.

[0010] Preferably, it also includes a control member, the upper end of the building block is provided with an abutment groove, the bottom of the placement groove is provided with a sliding groove, the abutment groove is connected to the sliding groove, the control member includes an abutment block and a sliding block, the abutment block is slidably connected to the groove wall of the abutment groove, the sliding block is slidably connected to the groove wall of the sliding groove, one end of the sliding block is fixedly connected to the end of the placement block away from the clamping plate, the lower end of the abutment block is provided with a first abutment surface, the upper end of the sliding block is provided with a second abutment surface, the distance from the second abutment surface to the placement block decreases with increasing height, the first abutment surface is parallel to the second abutment surface, the first abutment surface is attached to the second abutment surface, and the upper end of the abutment block is used to abut the bottom of the installation groove.

[0011] By adopting the above technical solution, when installing the installation frame, the abutment block abuts against the bottom of the installation groove. When the abutment block moves, due to the influence of the first abutment surface and the second abutment surface, the sliding block moves, which is convenient for automatically clamping the vertical ribs.

[0012] Preferably, the control member includes a reset plate and a reset spring, the groove wall of the sliding groove is provided with a reset groove, the reset plate is fixedly connected to one end of the sliding block facing the reset groove, the reset plate is slidably embedded in the reset groove, the length direction of the reset spring is parallel to the sliding direction of the sliding block, one end of the reset spring is fixedly connected to the groove wall of the reset groove, and the other end of the reset spring is fixedly connected to the reset plate.

[0013] By adopting the above technical solution, after the installation frame is disassembled, the reset spring causes the reset plate to slide, and the sliding block slides synchronously, so that the clamping piece is away from the vertical ribs, which facilitates the removal of the building blocks for next use and reduces the waste of building materials.

[0014] Preferably, it also includes a fixing part, which includes a sleeve and a bolt. The sleeve is fixedly connected to the upper end of the vertical rib. The upper end of the mounting block is provided with a fixing port, which is connected to the mounting groove. The bolt passes through the fixing port and is threadedly connected to the inner wall of the sleeve.

[0015] By adopting the above technical solution, the bolts are rotated and the threaded sleeves are relatively fixed, the vertical reinforcement is tightened and straightened, so that the columns, blocks and installation frames are relatively fixed, the overall stability of the structure is improved, and the structural strength of the enclosure structure is improved.

[0016] Preferably, it also includes a locking piece, which includes a locking block, a warning column, a pulling block and a compression spring, the outer wall of the building block is provided with a locking groove, the groove wall of the installation groove facing the locking groove is provided with an avoidance groove, the locking block is slidably connected to the groove wall of the avoidance groove, and the locking groove is used for the locking block to be embedded, the outer wall of the installation frame is provided with a warning port, the warning port is connected to the groove bottom of the avoidance slot, the warning column is slidably connected to the inner wall of the warning port, one end of the warning column is fixedly connected to the locking block, and the other end of the warning column is fixedly connected to the pulling block, the compression spring is sleeved on the outer periphery of the warning column, one end of the compression spring abuts the outer wall of the installation frame, and the other end of the compression spring abuts the pulling block, and the lower end of the locking block is provided with a third abutting surface, and the distance from the third abutting surface to the warning column increases as it approaches the groove bottom of the installation slot.

[0017] By adopting the above technical solution, when installing the installation frame, the upper end of the building block is controlled to be embedded in the installation groove, and the installation frame slides downward. The building block abuts the third abutting surface so that the locking block slides and is embedded in the avoidance groove. When the installation frame slides until the locking block is embedded in the locking groove, the relative fixation of the locking block and the building block is completed, and the warning column slides to remind the operator that the assembly is completed.

[0018] Preferably, the locking member also includes a rotating block, one end of which is hinged to the outer wall of the mounting frame, the hinge axis of the rotating block is parallel to the length direction of the warning column, and the end of the rotating block facing away from the mounting frame is used for abutting against one end of the pulling block toward the mounting frame.

[0019] By adopting the above technical solution, when the installation frame needs to be disassembled, the rotating block is rotated so that the pulling block abuts the rotating block, and the rotating block causes the locking block to be embedded in the avoidance groove, which facilitates the disassembly of the installation frame, is convenient for users to use, and reduces material waste.

[0020] Preferably, it also includes a first positioning plate and a second positioning plate, the upper end of the building block is provided with a first positioning groove and a second positioning groove, the first positioning groove and the second positioning groove are respectively close to the two ends of the building block, the first positioning plate and the second positioning plate are both fixedly connected to the bottom of the installation groove, the first positioning groove is used for the first positioning plate to be embedded, and the second positioning groove is used for the second positioning plate to be embedded.

[0021] By adopting the above technical solution, the first positioning plate cooperates with the first positioning groove, and the second positioning plate cooperates with the second positioning groove, so that the installation frame can be installed in the correct position, and at the same time, the connection strength between the installation frame and the cut block is improved.

[0022] In a second aspect, the present application provides a deep foundation pit retaining structure construction method, which adopts the following technical solution: A deep foundation pit retaining structure construction method, comprising: Level the site, measure and lay out the lines, and draw construction drawings; According to the construction drawings, determine the position of the columns and mark them. Use the drilling and pouring method to drill holes at each marked point, bury casings, clean holes, lower steel cages, pour concrete slurry, and form columns after solidification; Transporting blocks to site while the columns are setting; Straighten the vertical bars in the steel cage, stack the blocks on the columns one by one, and pass the vertical bars through the installation openings; Install the installation frame to fix the blocks, and the clamping parts to relatively fix the vertical reinforcement and the blocks; After the construction is completed, the operator removes the installation frame and removes the blocks.

[0023] By adopting the technical solution, it is easy to assemble, the building blocks can be reused, and the waste of building materials can be reduced.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The clamping parts fix the vertical reinforcement and the blocks relatively, and the installation frame fixes the adjacent blocks relatively, which improves the overall structural strength of the blocks, facilitates the repeated use of blocks, and reduces the waste of building materials; 2. When installing the installation frame, the abutment block abuts against the bottom of the installation groove. When the abutment block moves, due to the influence of the first abutment surface and the second abutment surface, the sliding block moves, so as to automatically clamp the vertical ribs; 3. When installing the installation frame, control the upper end of the building block to be embedded in the installation groove, and the installation frame slides downward. The building block abuts the third abutting surface so that the locking block slides and embeds into the avoidance groove. When the installation frame slides until the locking block is embedded in the locking groove, the relative fixation of the locking block and the building block is completed, and the warning column slides to remind the operator that the assembly is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the overall structural diagram of the deep foundation pit retaining structure.

[0026] Figure 2 It is a cross-sectional view of the deep foundation pit retaining structure.

[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4 It is a cross-sectional view of the deep foundation pit retaining structure, mainly used to show the locking parts.

[0029] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0030] Description of reference numerals: 1. column; 11. steel cage; 111. vertical bar; 2. concrete column; 3. crown beam; 31. block; 311. installation opening; 312. placement groove; 313. abutment groove; 314. sliding groove; 315. reset groove; 316. first positioning groove; 317. second positioning groove; 318. locking groove; 32. installation frame; 321. installation groove; 322. sealing gasket; 323. avoidance groove; 324. warning opening; 325. fixing opening; 4. clamping piece; 41. placement Block; 42, clamping plate; 421, guide surface; 43, deformation block; 5, control member; 51, abutment block; 511, first abutment surface; 52, sliding block; 521, second abutment surface; 53, reset plate; 54, reset spring; 6, positioning member; 61, first positioning plate; 62, second positioning plate; 7, locking member; 71, locking block; 711, third abutment surface; 72, warning column; 73, pulling block; 74, compression spring; 75, rotating block; 8, fixing member; 81, screw sleeve; 82, bolt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] The present application embodiment discloses a deep foundation pit retaining structure. Figure 1 and Figure 2 The deep foundation pit retaining structure includes a column 1, a concrete column 2, a crown beam 3, a clamping member 4, a control member 5, a positioning member 6, a locking member 7 and a fixing member 8.

[0033] Reference Figure 2 A steel cage 11 is embedded in the column 1, and the steel cage 11 includes vertical bars 111. The upper ends of the vertical bars 111 extend out of the column 1. A plurality of columns 1 are provided, and the plurality of columns 1 are evenly spaced along the extension direction of the inner wall of the deep foundation pit. A plurality of concrete columns 2 are provided, and a concrete column 2 is provided between adjacent columns 1. Both sides of the concrete column 2 are respectively fixedly connected to the outer walls of the two adjacent columns 1.

[0034] Reference Figure 3The crown beam 3 includes a building block 31 and a mounting frame 32. There are multiple building blocks 31. The building blocks 31 are arranged in a one-to-one correspondence with the columns 1. The building blocks 31 are connected to the upper ends of the columns 1 and the concrete columns 2. The building blocks 31 are provided with mounting openings 311. The mounting openings 311 vertically penetrate the building blocks 31. There are multiple mounting openings 311. The mounting openings 311 are arranged in a one-to-one correspondence with the vertical ribs 111. The vertical ribs 111 pass through the mounting openings 311. The height of the upper end of the vertical ribs 111 is less than the height of the upper end of the mounting openings 311. Adjacent building blocks 31 abut against each other, and the joints of adjacent building blocks 31 are arranged above the concrete column 2.

[0035] Reference Figure 1 and Figure 3 The lower end of the mounting frame 32 is provided with a mounting groove 321 for embedding the building block 31. The bottom of the mounting groove 321 is used to cover the joints of adjacent building blocks 31. Adjacent mounting frames 32 abut against each other. The groove wall of the mounting groove 321 is fixedly connected with a sealing gasket 322. Two sealing gaskets 322 are provided in one mounting frame 32. The two sealing gaskets 322 are respectively arranged at the two ends of the mounting groove 321. The inner wall of the sealing gasket 322 abuts against the outer wall of the building block 31.

[0036] Reference Figure 3 The inner wall of the installation opening 311 is provided with a placement groove 312, and there are multiple placement grooves 312. The multiple placement grooves 312 are evenly spaced around the axis of the installation opening 311. There are multiple clamping members 4, and the clamping members 4 are arranged one by one corresponding to the placement grooves 312. In this embodiment, two placement grooves 312 are provided on the inner wall of each installation opening 311.

[0037] The clamping member 4 includes a placement block 41, a clamping plate 42 and a deformation block 43. The placement block 41 is slidably connected in the placement groove 312. The clamping plate 42 is fixedly connected to the end of the placement block 41 away from the bottom of the placement groove 312. The end of the clamping plate 42 facing the vertical rib 111 is set as an arc surface, and the arc surface is used to increase the coverage area of ​​the outer wall of the vertical rib 111. The clamping plate 42 is used to clamp the vertical rib 111. The deformation block 43 is fixedly connected to the end of the clamping plate 42 away from the placement block 41.

[0038] Reference Figure 3 A contact groove 313 is provided at the upper end of the building block 31, a sliding groove 314 is provided at the bottom of the placement groove 312, the placement groove 312 and the sliding groove 314 are arranged in a one-to-one correspondence, the contact groove 313 is connected to the sliding groove 314, and a plurality of control members 5 are provided, and the control members 5 and the contact grooves 313 are arranged in a one-to-one correspondence.

[0039] The control member 5 includes an abutment block 51, a sliding block 52, a reset plate 53 and a reset spring 54. The abutment block 51 is slidably connected to the groove wall of the abutment groove 313, the sliding block 52 is slidably connected to the groove wall of the sliding groove 314, one end of the sliding block 52 is fixedly connected to the end of the placement block 41 away from the clamping plate 42, the lower end of the abutment block 51 is provided with a first abutment surface 511, the upper end of the sliding block 52 is provided with a second abutment surface 521, the distance from the second abutment surface 521 to the placement block 41 decreases with the increase of the height, the first abutment surface 511 is parallel to the second abutment surface 521, the first abutment surface 511 is attached to the second abutment surface 521, and the upper end of the abutment block 51 is used to abut the groove bottom of the installation groove 321.

[0040] Reference Figure 3 A reset groove 315 is provided on the upward groove wall of the sliding groove 314, the reset plate 53 is fixedly connected to one end of the sliding block 52 facing the reset groove 315, the reset plate 53 is slidably embedded in the reset groove 315, the length direction of the reset spring 54 is parallel to the sliding direction of the sliding block 52, one end of the reset spring 54 is fixedly connected to the groove wall of the reset groove 315, and the other end of the reset spring 54 is fixedly connected to the reset plate 53.

[0041] The positioning member 6 includes a first positioning plate 61 and a second positioning plate 62. The upper end of the building block 31 is provided with a first positioning groove 316 and a second positioning groove 317. The first positioning groove 316 and the second positioning groove 317 are respectively close to the two ends of the building block 31. The first positioning plate 61 and the second positioning plate 62 are both fixedly connected to the bottom of the installation groove 321. The first positioning groove 316 is used for the first positioning plate 61 to be embedded, and the second positioning groove 317 is used for the second positioning plate 62 to be embedded.

[0042] Reference Figure 4 and Figure 5 The locking member 7 includes a locking block 71, a warning column 72, a pull block 73, a compression spring 74 and a rotating block 75. The outer walls of both sides of the building block 31 are provided with locking grooves 318, the length direction of the locking grooves 318 is parallel to the length direction of the building block 31, and the groove wall of the installation groove 321 facing the locking groove 318 is provided with an avoidance groove 323, the locking block 71 is slidably connected to the groove wall of the avoidance groove 323, and the locking groove 318 is used for the locking block 71 to be embedded.

[0043] Reference Figure 5The outer wall of the mounting frame 32 is provided with a warning opening 324, and the warning opening 324 is connected to the bottom of the avoidance groove 323. There are two warning openings 324, and the two warning openings 324 are respectively close to the two ends of the avoidance groove 323. The warning column 72 is slidably connected to the inner wall of the warning opening 324, one end of the warning column 72 is fixedly connected to the locking block 71, and the other end of the warning column 72 is fixedly connected to the pulling block 73. The compression spring 74 is sleeved on the outer periphery of the warning column 72, one end of the compression spring 74 abuts against the outer wall of the mounting frame 32, and the other end of the compression spring 74 abuts against the pulling block 73. The lower end of the locking block 71 is provided with a third abutting surface 711, and the distance from the third abutting surface 711 to the warning column 72 increases as it approaches the bottom of the mounting groove 321.

[0044] One end of the rotating block 75 is hinged to the outer wall of the mounting frame 32, and the hinge axis of the rotating block 75 is parallel to the length direction of the warning column 72. The end of the rotating block 75 away from the mounting frame 32 is used for abutting against the end of the pulling block 73 toward the mounting frame 32. When the pulling block 73 abuts against the rotating block 75, the locking block 71 is away from the locking groove 318 and embedded in the avoidance groove 323.

[0045] Reference Figure 3 The fixing member 8 includes a screw sleeve 81 and a bolt 82. The screw sleeve 81 is welded to the upper end of the vertical rib 111. The upper end of the mounting frame 32 is provided with a fixing port 325, which is connected to the mounting groove 321. The bolt 82 passes through the fixing port 325 and is threadedly connected to the inner wall of the screw sleeve 81. The upper end of the clamping plate 42 is provided with a guide surface 421, and the height of the guide surface 421 decreases as it approaches the vertical rib 111. The lower end of the screw sleeve 81 abuts against the upper end of the clamping plate 42, and the upper end of the screw sleeve 81 abuts against the bottom of the mounting groove 321.

[0046] The implementation principle of a deep foundation pit retaining structure in an embodiment of the present application is as follows: the building block 31 is installed on the column 1, the vertical rib 111 passes through the installation opening 311, the installation frame 32 is installed, the first positioning plate 61 is embedded in the first positioning groove 316, the second positioning plate 62 is embedded in the second positioning groove 317, the abutment block 51 abuts against the bottom of the installation groove 321, so that the clamping member 4 clamps the vertical rib 111, and at the same time, the position of the screw sleeve 81 is adjusted so that the screw sleeve 81 is coaxially arranged with the fixing opening 325, the locking member 7 fixes the installation frame 32 and the building block 31 relatively, and at the same time reminds the operator that the transfer is completed, and the installation bolts 82 fix the installation frame 32, the building block 31 and the column 1 relatively.

[0047] The present application also discloses a method for constructing a deep foundation pit retaining structure. Figure 2 , the deep foundation pit retaining structure construction method includes the following steps: Level the site, measure and lay out the lines, and draw construction drawings; According to the construction drawing, the position of the column 1 is determined and marked, and a hole is drilled at each marked point by the drilling and pouring method, a casing is buried, the hole is cleaned, a steel cage 11 is lowered, and concrete slurry is poured, and the column 1 is formed after solidification; During the solidification process of the column 1, the blocks 31 are transported to the site; Straighten the vertical bars 111 in the steel cage 11, and stack the blocks 31 on the column 1 in sequence, with the vertical bars 111 passing through the installation opening 311; Install the installation frame 32 to fix the building block 31 to form the crown beam 3, and the clamping member 4 completes the relative fixation between the vertical rib 111 and the building block 31; After the construction is completed, the operator removes the installation frame 32 and removes the building blocks 31 .

[0048] The implementation principle of the deep foundation pit retaining structure construction method of the embodiment of the present application is: easy assembly and disassembly, easy to reuse the building blocks 31, and reduce the waste of building materials.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A deep foundation pit retaining structure, characterized in that: The invention comprises a column (1), a building block (31), a clamping member (4) and a mounting frame (32), wherein the column (1) is embedded with a vertical rib (111), the upper end of the vertical rib (111) extends out of the column (1), the building block (31) is connected to the upper end of the column (1), the building block (31) is provided with a mounting opening (311), the vertical rib (111) is arranged in the mounting opening (311), and one side of the clamping member (4) is connected to the inner wall of the mounting opening (311). The other side of the clamping member (4) is connected to the outer wall of the vertical rib (111), a plurality of the columns (1) are provided, a plurality of the building blocks (31) are provided, adjacent building blocks (31) are abutted against each other, a mounting groove (321) is provided at the lower end of the mounting frame (32), the mounting groove (321) is used to cover the building blocks (31) for embedding, and the groove bottom of the mounting groove (321) is used to cover the joints of adjacent building blocks (31).

2. The deep foundation pit retaining structure according to claim 1, characterized in that: The inner wall of the installation opening (311) is provided with a placement groove (312), and a plurality of the placement grooves (312) are provided. The plurality of placement grooves (312) are evenly spaced around the axis of the installation opening (311). A plurality of clamping members (4) are provided. The clamping members (4) are arranged in a one-to-one correspondence with the placement grooves (312). The clamping member (4) comprises a placement block (41), a clamping plate (42) and a deformation block (43). The placement block (41) is slidably connected in the placement groove (312), the clamping plate (42) is fixedly connected to an end of the placement block (41) away from the bottom of the placement groove (312), an end of the clamping plate (42) facing the vertical rib (111) is set as an arc surface, and the deformation block (43) is fixedly connected to an end of the clamping plate (42) away from the placement block (41).

3. The deep foundation pit retaining structure according to claim 2, characterized in that: The control member (5) further comprises a control member, wherein the upper end of the building block (31) is provided with an abutting groove (313), the bottom of the placement groove (312) is provided with a sliding groove (314), the abutting groove (313) is connected to the sliding groove (314), the control member (5) comprises an abutting block (51) and a sliding block (52), the abutting block (51) is slidably connected to the groove wall of the abutting groove (313), the sliding block (52) is slidably connected to the groove wall of the sliding groove (314), and one end of the sliding block (52) is fixedly connected to the placement block (4 1) at one end facing away from the clamping plate (42), the lower end of the abutting block (51) is provided with a first abutting surface (511), the upper end of the sliding block (52) is provided with a second abutting surface (521), the distance between the second abutting surface (521) and the placement block (41) decreases as the height increases, the first abutting surface (511) is parallel to the second abutting surface (521), the first abutting surface (511) is in contact with the second abutting surface (521), and the upper end of the abutting block (51) is used to abut the bottom of the installation groove (321).

4. The deep foundation pit retaining structure according to claim 3 is characterized in that: The control member (5) comprises a reset plate (53) and a reset spring (54); a reset groove (315) is provided on a groove wall of the sliding groove (314); the reset plate (53) is fixedly connected to one end of the sliding block (52) facing the reset groove (315); the reset plate (53) is slidably embedded in the reset groove (315); a length direction of the reset spring (54) is parallel to a sliding direction of the sliding block (52); one end of the reset spring (54) is fixedly connected to the groove wall of the reset groove (315); and the other end of the reset spring (54) is fixedly connected to the reset plate (53).

5. The deep foundation pit retaining structure according to claim 1, characterized in that: The mounting block further comprises a fixing member (8), the fixing member (8) comprising a screw sleeve (81) and a bolt (82), the screw sleeve (81) being fixedly connected to the upper end of the vertical rib (111), the upper end of the mounting block being provided with a fixing opening (325), the fixing opening (325) being connected to the mounting groove (321), and the bolt (82) passing through the fixing opening (325) and then being threadedly connected to the inner wall of the screw sleeve (81).

6. The deep foundation pit retaining structure according to claim 1, characterized in that: The invention also comprises a locking member (7), wherein the locking member (7) comprises a locking block (71), a warning column (72), a pulling block (73) and a compression spring (74); the outer wall of the building block (31) is provided with a locking groove (318); the groove wall of the installation groove (321) facing the locking groove (318) is provided with an avoidance groove (323); the locking block (71) is slidably connected to the groove wall of the avoidance groove (323); the locking groove (318) is used for the locking block (71) to be embedded; the outer wall of the installation frame (32) is provided with a warning opening (324); the warning opening (324) is connected to the groove bottom of the avoidance groove (323); the warning column (72) is provided with a pulling block (73) and a compression spring (74); (72) is slidably connected to the inner wall of the warning port (324), one end of the warning column (72) is fixedly connected to the locking block (71), and the other end of the warning column (72) is fixedly connected to the pulling block (73), the compression spring (74) is sleeved on the outer periphery of the warning column (72), one end of the compression spring (74) abuts against the outer wall of the mounting frame (32), and the other end of the compression spring (74) abuts against the pulling block (73), and the lower end of the locking block (71) is provided with a third abutting surface (711), and the distance from the third abutting surface (711) to the warning column (72) increases as it approaches the bottom of the mounting groove (321).

7. The deep foundation pit retaining structure according to claim 6, characterized in that: The locking member (7) further comprises a rotating block (75), one end of the rotating block (75) being hinged to the outer wall of the mounting frame (32), the hinge axis of the rotating block (75) being parallel to the length direction of the warning column (72), and the end of the rotating block (75) facing away from the mounting frame (32) being used for abutting against the end of the pulling block (73) facing the mounting frame (32).

8. The deep foundation pit retaining structure according to claim 1, characterized in that: The first positioning plate (61) and the second positioning plate (62) are also included. The upper end of the building block (31) is provided with a first positioning groove (316) and a second positioning groove (317). The first positioning groove (316) and the second positioning groove (317) are respectively close to two ends of the building block (31). The first positioning plate (61) and the second positioning plate (62) are both fixedly connected to the bottom of the installation groove (321). The first positioning groove (316) is used for the first positioning plate (61) to be embedded, and the second positioning groove (317) is used for the second positioning plate (62) to be embedded.

9. A method for constructing a deep foundation pit retaining structure, used for the deep foundation pit retaining structure according to any one of claims 1 to 8, characterized in that: Level the site, measure and lay out the lines, and draw construction drawings; According to the construction drawing, the position of the column (1) is determined and marked, and a hole is drilled at each marked point by the drilling and pouring method, a casing is buried, the hole is cleaned, a steel cage (11) is lowered, and concrete slurry is poured, and after solidification, the column (1) is formed; During the solidification process of the column (1), the blocks (31) are transported to the site; Straightening the vertical bars (111) in the steel cage (11), stacking the blocks (31) on the columns (1) in sequence, and passing the vertical bars (111) through the installation openings (311); The installation frame (32) is installed to fix the building block (31), and the clamping member (4) completes the relative fixation between the vertical reinforcement (111) and the building block (31); After the construction is completed, the operator removes the installation frame (32) and removes the building blocks (31).

Images