A steel replacement strut construction structure in the middle wall area of a deep subway foundation pit

Abstract

The present invention discloses a steel replacement strut construction structure in the middle partition wall area of a subway deep foundation pit, which relates to the technical field of engineering construction. It includes a plurality of construction columns, and the plurality of construction columns are fixedly arranged inside the foundation pit. Embedded steel plates are respectively arranged on both sides of the plurality of construction columns, and the embedded steel plates are fixed inside the foundation pit by an embedded method. It also includes two side strut plates, and the two side strut plates are respectively arranged on the inner walls on both sides of the foundation pit. A plurality of support components are arranged between the side strut plates and the embedded steel plates. Each support component includes a connecting foot plate II arranged on the embedded steel plate, and a mounting seat is fixedly arranged on the outer wall of one side of the connecting foot plate II. An internally threaded steel sleeve is rotatably installed on each mounting seat; in the present invention, the embedded steel plate is fixed inside the foundation pit by an embedded method. The cooperation between the embedded steel plate and the plurality of construction columns can provide a good structural foundation for the subsequent side strut plates and ensure the smooth progress of the subsequent support operation.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to a steel replacement strut construction structure in the middle partition wall area of a subway deep foundation pit. Background Art

[0002] In the construction of subway deep foundation pits, it is necessary to excavate and construct in sections. In some deep foundation pit sections, the main structure stability is strengthened by a middle partition wall due to insufficient vertical axial force of rectangular columns. The deep foundation pit adopts multi - layer reinforced concrete struts and steel strut support technologies to ensure the safety of the foundation pit. The struts in the pit need to be removed in advance with the construction of the main structure. After the main structure in the deep foundation pit is constructed in sections, the original concrete struts and steel struts are removed, and new steel replacement struts are added, and then the main structure in the diaphragm wall area is constructed.

[0003] The existing technology has the following problems:

[0004] After the construction of the bottom slab and side walls of the subway deep foundation pit is completed, by reserving steel replacement strut holes during the construction of the middle partition wall, the steel replacement struts transfer force through the side walls at both ends to ensure the stability and safety of the foundation pit. This technical process is complex. It not only requires reserving holes in the middle partition wall area, but also the installation and removal of steel replacement struts are difficult, which prolongs the construction period and increases the construction cost at the same time. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel replacement strut construction structure in the middle partition wall area of a subway deep foundation pit to solve the problems raised in the above - mentioned background art.

[0006] The technical solution of the present invention is: A steel replacement strut construction structure in the middle partition wall area of a subway deep foundation pit, including a plurality of construction columns, the plurality of construction columns are fixedly arranged inside the foundation pit, embedded steel plates are respectively arranged on both sides of the plurality of construction columns, the embedded steel plates are fixed inside the foundation pit by an embedded method, and further includes;

[0007] Two side strut plates are respectively arranged on the inner walls on both sides of the foundation pit. A plurality of support components are arranged between each side strut plate and the embedded steel plate. Each support component includes a connecting foot plate two arranged on the embedded steel plate, and an installation seat is fixedly arranged on the outer wall of one side of the connecting foot plate two. An internally - threaded steel sleeve is rotatably installed on each installation seat;

[0008] Each support component further includes a fixing stud, and the fixing stud is threadedly connected with the inner wall of the internally - threaded steel sleeve. The end of each fixing stud is fixedly installed with a connecting foot plate one. Connecting ear ends are fixedly arranged at the center positions of the edges of the connecting foot plate one and the connecting foot plate two, and the connecting ear ends are fixedly connected to the embedded steel plate and the side strut plate through bolts;

[0009] A plurality of locking components are respectively arranged on the plurality of internally - threaded steel sleeves;

[0010] Multiple auxiliary reinforcement components are used to assist in supporting and reinforcing the embedded steel plate and the side support plate.

[0011] Preferably, multiple U-shaped brackets are fixedly installed at one end of the circumferential outer wall of each internal threaded steel sleeve.

[0012] Preferably, each locking component includes an extended ring seat fixedly installed on one side of the mounting seat, and a plurality of jacks distributed in a circular array are provided on one side of the extended ring seat.

[0013] Preferably, convex ribs are fixedly installed on both sides of the circumferential outer wall of each internal threaded steel sleeve. A limiting ring is fixedly installed at a position of each internal threaded steel sleeve close to the convex rib, and a connecting ring is rotatably installed on one side of the limiting ring.

[0014] Preferably, a tension spring is fixedly installed on one side of each connecting ring, and a limiting end ring is fixedly installed at one end of the tension spring. A sliding groove slidably matched with the convex rib is provided on the inner circumferential wall of the limiting end ring, and a plurality of insertion posts adapted to the jacks are fixedly installed on one side wall of the limiting end ring.

[0015] Preferably, each auxiliary reinforcement component includes a pair of movable connection seats two fixedly installed on the connecting foot plate two, and a square cavity tube is rotatably installed on each movable connection seat two through a movable shaft.

[0016] Preferably, a square steel is slidably connected in each square cavity tube, and an adjustment hole is provided on each square steel. A locking bolt is inserted into one end of each square cavity tube, and the locking bolt is matched with the adjustment hole.

[0017] Preferably, one end of each square steel is rotatably installed with a movable connection seat one through a movable shaft, and each movable connection seat one is fixedly connected with the side support plate through a bolt.

[0018] The present invention provides a steel replacement support construction structure in the middle wall area of a subway deep foundation pit through improvement. Compared with the prior art, it has the following improvements and advantages:

[0019] Firstly: In the present invention, the embedded steel plate is fixed inside the foundation pit by an embedded method. The cooperation between the embedded steel plate and multiple construction columns can provide a good structural foundation for the subsequent side support plate and ensure the smooth progress of the subsequent support operation;

[0020] Second: when the present invention needs to support two side support plates, first fix the second connecting foot plate with an internal thread steel sleeve installed on the embedded steel plate, and thread one end of the fixing stud with the internal thread steel sleeve. After completion, fix the first connecting foot plate with the fixing stud on the side support plate by bolts. In this process, the internal thread steel sleeve can be rotated and the fixing stud can be screwed out toward the side support plate until the first connecting foot plate is in close contact with the side support plate, thereby completing the support and fixation of the side support plate.

[0021] Third: before the present invention completes the initial support operation of the side support plate with the help of the internal threaded steel sleeve and the fixed stud, it is necessary to move the limit end ring to one end of the convex rib, and then rotate itself so that the slide groove of the limit end ring and the convex rib are intertwined. At this time, one end of the convex rib can limit the limit end ring, so that the limit end ring will not contact the extension ring seat under the action of the tensioning spring; and after completing the initial fixed support operation, the limit end ring can be rotated again so that it can catch the slide groove and slide along the convex rib, and under the action of the tensioning spring, the limit end ring is made to contact the extension ring seat, and when the column is not inserted into the socket, the U-shaped pull frame can be used to slightly push the internal threaded steel sleeve again until the column is inserted into the socket. At this time, the internal threaded steel sleeve will form an integrated fixed structure with the mounting seat, so that the internal threaded steel sleeve cannot rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall first-view stereoscopic structure of the present invention;

[0024] Figure 2 It is a side view structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall second viewing angle stereoscopic structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the embedded steel plate and the structural column of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the support assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the partial explosion structure of the support assembly of the present invention.

[0029] Reference numerals:

[0030] 1, construction column; 2, embedded steel plate; 3, side support plate; 4, support assembly; 5, connecting foot plate one; 6, connecting foot plate two; 7, fixing stud; 8, internal thread steel sleeve; 9, U-shaped bracket; 10, movable connection seat one; 11, movable connection seat two; 12, square cavity tube; 13, square steel; 131, adjustment hole; 14, locking bolt; 15, limiting ring; 151, connecting ring; 16, tension spring; 17, limiting end ring; 171, inserting column; 172, sliding groove; 18, mounting seat; 19, extending ring seat; 191, inserting hole; 20, rib; 21, connecting ear end. Detailed implementation manners

[0031] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention provides a steel replacement support construction structure in the middle partition wall area of a subway deep foundation pit through improvement. The technical solution of the present invention is as follows:

[0033] As Figures 1 to 6 shown, the embodiment of the present invention provides a steel replacement support construction structure in the middle partition wall area of a subway deep foundation pit, including a plurality of construction columns 1 fixedly arranged inside the foundation pit. Embedded steel plates 2 are respectively arranged on both sides of the plurality of construction columns 1. The embedded steel plates 2 are fixed inside the foundation pit by an embedded method. The cooperation between the embedded steel plates 2 and the plurality of construction columns 1 can provide a good structural foundation for the subsequent side support plates 3 and ensure the smooth progress of the subsequent support operation; at the same time, it is convenient for the construction of the main structure, saves the construction period, and reduces the construction cost. Compared with the prior art, due to the problem of the size of the middle partition wall opening, it is difficult to disassemble the support components, which is likely to cause damage to the support components or personal injury accidents; the top-to-top type can be directly disassembled in the basement, which is convenient for transportation and management after disassembly. It also includes;

[0034] Two side support plates 3 are respectively arranged on the inner walls on both sides of the foundation pit. A plurality of support assemblies 4 are arranged between each side support plate 3 and the embedded steel plate 2. Each support assembly 4 includes a connecting foot plate two 6 arranged on the embedded steel plate 2, and a mounting seat 18 is fixedly arranged on the outer wall of one side of each connecting foot plate two 6. An internal thread steel sleeve 8 is rotatably installed on each mounting seat 18;

[0035] Each support component 4 further includes a fixing stud 7, and the fixing stud 7 is threadedly connected to the inner wall of the internally threaded steel sleeve 8. A connecting foot plate one 5 is fixedly installed at the end of each fixing stud 7. Connecting ears 21 are fixedly arranged at the center positions of the edges of the connecting foot plate one 5 and the connecting foot plate two 6, and the connecting ears 21 are fixedly connected to the embedded steel plate 2 and the side support plate 3 by bolts;

[0036] With the above structure, when it is necessary to support the two side support plates 3, first fix the connecting foot plate two 6 with the internally threaded steel sleeve 8 on the embedded steel plate 2, thread one end of the fixing stud 7 with the internally threaded steel sleeve 8. After completion, fix the connecting foot plate one 5 with the fixing stud 7 on the side support plate 3 by bolts. In this process, the internally threaded steel sleeve 8 can be rotated, and the fixing stud 7 can be screwed out towards the side support plate 3 until the connecting foot plate one 5 is in close contact with the side support plate 3, then the support and fixation of the side support plate 3 can be completed.

[0037] A plurality of locking components are respectively arranged on a plurality of internally threaded steel sleeves 8; the locking components are used to limit and fix the internally threaded steel sleeves 8 to prevent the internally threaded steel sleeves 8 from rotating, thereby ensuring the stability of the support operation.

[0038] A plurality of auxiliary reinforcement components are used to assist in supporting and reinforcing the embedded steel plate 2 and the side support plate 3.

[0039] Furthermore, a plurality of U-shaped brackets 9 are fixedly installed at one end of the circumferential outer wall of each internally threaded steel sleeve 8; by using the provided U-shaped brackets 9, it is convenient for the operator to rotate the internally threaded steel sleeve 8 with the help of them.

[0040] As a further solution of the present invention, each locking component includes an extended ring seat 19 fixedly installed on one side of the mounting seat 18, and a plurality of insertion holes 191 distributed in a circular array are formed on one side of the extended ring seat 19.

[0041] Furthermore, convex ribs 20 are fixedly installed on both sides of the circumferential outer wall of each internally threaded steel sleeve 8. A limiting ring 15 is fixedly installed at a position of each internally threaded steel sleeve 8 close to the convex rib 20, and a connecting ring 151 is rotatably installed on one side of the limiting ring 15.

[0042] Furthermore, a tension spring 16 is fixedly installed on one side of each connecting ring 151, and a limiting end ring 17 is fixedly installed at one end of the tension spring 16. A sliding groove 172 slidably matched with the convex rib 20 is formed on the inner circumferential wall of the limiting end ring 17, and a plurality of insertion posts 171 adapted to the insertion holes 191 are fixedly installed on one side wall of the limiting end ring 17.

[0043] Through the above structure, before the preliminary support operation of the side support plate 3 is completed by means of the internal threaded steel sleeve 8 and the fixing stud 7, it is necessary to move the limiting end ring 17 to one end of the convex rib 20, and then rotate itself so that the slide groove 172 of the limiting end ring 17 and the convex rib 20 are intertwined with each other. At this time, one end of the convex rib 20 can limit the limiting end ring 17, so that the limiting end ring 17 will not contact the extension ring seat 19 under the action of the tension spring 16;

[0044] After completing the initial fixed support operation, the limit end ring 17 can be rotated again so that it can catch the slide groove 172 and slide along the convex rib 20, and under the action of the tensioning spring 16, the limit end ring 17 is in contact with the extension ring seat 19. When the plug post 171 is not inserted into the socket 191, the U-shaped shifting frame 9 can be used to slightly shift the internal threaded steel sleeve 8 again until the plug post 171 is inserted into the socket 191. At this time, the internal threaded steel sleeve 8 will form an integrated fixed structure with the mounting seat 18, so that the internal threaded steel sleeve 8 cannot rotate.

[0045] As a further solution of the present invention, each auxiliary reinforcement assembly includes a pair of movable connection seats 11 fixedly mounted on the connecting foot plate 6, and a square cavity tube 12 is rotatably mounted on each movable connection seat 11 via a movable shaft.

[0046] Furthermore, each square lumen tube 12 is slidably connected with a square steel 13 , and each square steel 13 is provided with an adjustment hole 131 . A locking bolt 14 is inserted into one end of each square lumen tube 12 , and the locking bolt 14 matches the adjustment hole 131 .

[0047] Furthermore, a movable connecting seat 10 is rotatably mounted on the end of each square steel 13 via a movable shaft, and each movable connecting seat 10 is fixedly connected to the side support plate 3 via bolts.

[0048] Through the above structure, after completing the locking of the internal threaded steel sleeve 8 to ensure the stability of the supporting operation, the square cavity tube 12 and the square steel 13 can be installed to make them cooperate with each other. After adjusting the relative positions of the square steel 13 and the square cavity tube 12, the locking bolts 14 can be installed to make the square steel 13 and the square cavity tube 12 relatively fixed and form an integrated structure, thereby achieving further reinforcement of the side support plate 3.

[0049] The specific working method is as follows: When it is necessary to support the two side support plates 3, first fix the connecting foot plate two 6 with the internal threaded steel sleeve 8 on the embedded steel plate 2, thread one end of the fixing stud 7 with the internal threaded steel sleeve 8. After completion, fix the connecting foot plate one 5 with the fixing stud 7 on the side support plate 3 through bolts. During this process, the internal threaded steel sleeve 8 can be rotated, and the fixing stud 7 can be screwed out towards the side support plate 3 until the connecting foot plate one 5 is in close contact with the side support plate 3, then the support and fixation of the side support plate 3 can be completed; before completing the preliminary support operation of the side support plate 3 with the help of the internal threaded steel sleeve 8 and the fixing stud 7, the limit end ring 17 needs to be toggled to move it to one end of the convex rib 20 and then rotated itself, so that the sliding groove 172 of the limit end ring 17 intersects with the convex rib 20. At this time, one end of the convex rib 20 limits the limit end ring 17, so that the limit end ring 17 will not contact the extension ring seat 19 under the action of the tension spring 16; after completing the preliminary fixed support operation, the limit end ring 17 can be rotated again to make its sliding groove 172 slide along the convex rib 20, and under the action of the tension spring 16, the limit end ring 17 abuts against the extension ring seat 19. When the insertion post 171 is not inserted into the insertion hole 191, the internal threaded steel sleeve 8 can be slightly toggled again with the help of the U-shaped toggle frame 9 until the insertion post 171 is inserted into the insertion hole 191. At this time, the internal threaded steel sleeve 8 will form an integral fixed structure with the mounting seat 18, making the internal threaded steel sleeve 8 unable to rotate;

[0050] After completing the locking of the internal threaded steel sleeve 8 to ensure the stability of the support operation, the installation square cavity tube 12 and the square steel 13 can be used to cooperate with each other. After adjusting the relative positions of the square steel 13 and the square cavity tube 12, the square steel 13 and the square cavity tube 12 can be relatively fixed and form an integral structure by installing the locking bolt 14, so as to realize the further reinforcement effect on the side support plate 3.

[0051] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel replacement bracing construction structure in the middle partition wall area of a deep subway foundation pit, comprising a plurality of construction columns (1), the plurality of construction columns (1) are fixedly arranged inside the foundation pit, embedded steel plates (2) are respectively arranged on both sides of the plurality of construction columns (1), and the embedded steel plates (2) are fixed inside the foundation pit by an embedded method, characterized in that, It also includes; Two side support plates (3), the two side support plates (3) are respectively arranged on the inner walls of both sides of the foundation pit, and a plurality of support components (4) are arranged between each side support plate (3) and the embedded steel plate (2). Each support component (4) includes a connecting foot plate two (6) arranged on the embedded steel plate (2), and a mounting seat (18) is fixed on the outer wall of one side of the connecting foot plate two (6). An internally threaded steel sleeve (8) is rotatably mounted on each mounting seat (18); Each support component (4) further includes a fixing stud (7), and the fixing stud (7) is connected to the inner wall of the internally threaded steel sleeve (8) by threads. A connecting foot plate one (5) is fixedly installed at the end of each fixing stud (7). Connecting lugs (21) are fixedly arranged at the center positions of the edges of the connecting foot plate one (5) and the connecting foot plate two (6), and the connecting lugs (21) are fixedly connected to the embedded steel plate (2) and the side support plate (3) by bolts; A plurality of locking components, and the plurality of locking components are respectively arranged on the plurality of internally threaded steel sleeves (8); A plurality of auxiliary reinforcement components, and the plurality of auxiliary reinforcement components are used for auxiliary support and reinforcement of the embedded steel plate (2) and the side support plate (3); A plurality of U-shaped brackets (9) are fixedly installed at one end of the circumferential outer wall of each internally threaded steel sleeve (8). Each locking component includes an extension ring seat (19) fixedly installed on one side of the mounting seat (18), and a plurality of insertion holes (191) distributed in a circular array are formed on one side of the extension ring seat (19). Convex ribs (20) are fixedly installed on both sides of the circumferential outer wall of each internally threaded steel sleeve (8). A limiting ring (15) is fixedly installed at a position of each internally threaded steel sleeve (8) close to the convex rib (20), and a connecting ring (151) is rotatably installed on one side of the limiting ring (15). A tension spring (16) is fixedly installed on one side of each connecting ring (151), and a limiting end ring (17) is fixedly installed at one end of the tension spring (16). A sliding groove (172) slidably matched with the convex rib (20) is formed on the inner circumferential wall of the limiting end ring (17), and a plurality of insertion posts (171) adapted to the insertion holes (191) are fixedly installed on one side wall of the limiting end ring (17).

2. The steel replacement strut construction structure in the middle wall area of a subway deep foundation pit according to claim 1, characterized in that: Each auxiliary reinforcement component includes a pair of movable connection seats two (11) fixedly installed on the connecting foot plate two (6), and a square cavity tube (12) is rotatably installed on each movable connection seat two (11) through a movable shaft.

3. The steel replacement strut construction structure in the middle wall area of a subway deep foundation pit according to claim 2, characterized in that: A square steel (13) is slidably connected in each square cavity tube (12), and an adjustment hole (131) is formed on each square steel (13). A locking bolt (14) is inserted into one end of each square cavity tube (12), and the locking bolt (14) is matched with the adjustment hole (131).

4. A steel replacement strut construction structure in the middle partition wall area of a subway deep foundation pit according to claim 3, characterized in that: The end of each square steel (13) is rotatably installed with a movable connection seat one (10) through a movable shaft, and each movable connection seat one (10) is fixedly connected to the side support plate (3) by bolts.

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