Quick installation construction method of embedded plate misalignment steel pipe internal support for foundation pit retaining wall

Abstract

The present invention relates to a rapid installation construction method for a misaligned steel pipe internal support with embedded plates in a foundation pit retaining wall, including steps such as the design and installation of a force transfer frame body, the design of a strengthened joint for a profiled steel cross beam, the hoisting and temporary fixation of the profiled steel cross beam, the fabrication and installation of a sliding structure for the cross beam, the debugging of the profiled steel cross beam, the installation of a rectangular flexible joint, the installation of an adjusting head and a steel pipe internal support, and axial force construction, etc.; The rapid installation construction method for the steel pipe internal support can effectively utilize the embedded plates in the original design scheme, without the need to re-construct the embedded plates, transfer the axial force of the internal support at the changed position after the design change to the position of the original embedded plates, effectively ensuring the installation speed of the internal support, reducing the space-time effect on the foundation pit, reducing the impact on surrounding buildings, and ensuring construction safety to the greatest extent; Moreover, the rectangular flexible joint can move slightly on the profiled steel cross beam. Combined with the axial force servo system of the rectangular flexible joint steel support system, the axial force of the internal support can be quickly and effectively applied, and effective protection of the foundation pit can be completed.

Description

Technical Field

[0001] The present invention relates to the installation construction of the internal support of the foundation pit retaining wall, and particularly relates to a rapid installation construction method for the misaligned steel pipe internal support with embedded plates in the foundation pit retaining wall. Background Art

[0002] With the continuous development of foundation pit projects, more and more foundation pit projects are facing problems such as large excavation area, deep excavation depth, and complex surrounding environment, resulting in challenges such as design changes and construction parameter adjustments in the design and construction process. For the misalignment of the embedded plates in the foundation pit retaining wall caused by design changes, construction parameter adjustments, etc., it is difficult and time-consuming to demolish and re-embed the embedded plates using conventional schemes; moreover, there are problems such as long construction period and large space-time effect of the foundation pit, and it is necessary to optimize the design of the scheme and structure to ensure the rapid completion of the installation of the internal support in the foundation pit and ensure the construction quality of the internal support. Summary of the Invention

[0003] The purpose of the present invention is to propose a rapid installation construction method for the misaligned steel pipe internal support with embedded plates in the foundation pit retaining wall in view of the problems existing in the installation construction of the internal support of the existing foundation pit retaining wall.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions.

[0005] A rapid installation construction method for the misaligned steel pipe internal support with embedded plates in the foundation pit retaining wall is characterized by including the following construction steps.

[0006] S1. Design and installation of the force transfer frame:

[0007] S1.1. The force transfer frame includes a side plate connected to the embedded plate of the retaining wall, a bottom support plate above the intersection of the misaligned internal support, and a reinforcing triangular rib plate between the two; the top of the side plate is fixedly connected to the embedded plate on the retaining wall to form a weld, and the bottom of the side plate matches the position of the misaligned steel pipe internal support; the triangular rib plate is a triangular plate arranged between the bottom support plate and the side plate, and symmetrically arranged groove-shaped screw sliding holes are provided on the bottom support plate on both sides of the triangular rib plate;

[0008] S1.2. Weld the bottom support plate to the bottom of the side plate and perpendicular to the side plate, and weld the triangular rib plate to the center line of the bottom support plate and the side plate to form the force transfer frame;

[0009] S1.3. Hoist the force transfer frame to the position of the embedded plate for temporary fixation, and weld at the overlapping position of the embedded plate and the side plate of the force transfer frame, so as to fix the force transfer frame at the embedded plate.

[0010] S2. Design of reinforced node of steel beam: The steel beam is arranged at the supporting position inside the steel pipe after the foundation pit retaining wall is dislocated, extending along the circumference of the foundation pit, and a reinforced node is provided at the bottom of the bottom support plate. The reinforced node of the steel beam includes an upper reinforcing plate fitted with the bottom support plate, a bottom reinforcing plate corresponding to the upper reinforcing plate, and reinforced side plates symmetrically arranged within 3 to 10 cm on both sides of the bottom support plate. Support frames are symmetrically arranged on the outside of the steel beam, and screw holes are provided on the upper reinforcing plate and the bottom reinforcing plate.

[0011] S3. Installation and temporary fixation of steel beams: lift the steel beams manufactured in sections to the bottom of the bottom support plate of the force transmission frame, and strengthen the vertical matching of the node position and the embedded plate position.

[0012] S4. Fabrication and installation of beam sliding structure:

[0013] S4.1. The crossbeam sliding structure includes a sliding cover plate, a sliding bottom plate and a high-strength screw. The bottom of the high-strength screw is fixed to the sliding bottom plate. The sliding cover plate is provided with a screw hole at the high-strength screw. The sliding cover plate can move up and down on the high-strength screw.

[0014] S4.2. Install the sliding bottom plate at the bottom of the bottom reinforcement plate, and the high-strength screws penetrate the bottom reinforcement plate, the upper reinforcement plate and the bottom support plate;

[0015] S4.3. Install the sliding cover plate on the top of the bottom support plate, and fix the beam sliding structure in the bolt sliding hole on the bottom support plate at the beam reinforcement node by fixing nuts.

[0016] S5, Steel beam debugging:

[0017] S5.1. Uniformly apply axial force to the steel beam to make it move slightly in the direction perpendicular to the retaining wall. The range of movement is the difference between the distance between the screw sliding holes on the bottom support plate and the distance between the high-strength screws.

[0018] S5.2. After debugging, move the steel beam away from the retaining wall to give it a certain degree of adjustment capability.

[0019] S6. Rectangular joint installation: Install the rectangular joint on the top of the outer side support frame of the reinforced node steel beam.

[0020] S7. Installation of adjusting head and inner support of steel pipe: Install the adjusting head on the outside of the rectangular flexible head and fix it with the end flange and fixing bolts, and install the inner support on the outside of the adjusting head in sequence until the foundation pit size requirements are met.

[0021] S8. Axial force construction: adjust the stroke of the rectangular active head through the side control line of the rectangular active head, control the distance between it and the retaining wall, and apply axial force to make the internal support form effective support.

[0022] Preferably, in S1, the height of the side plate is the distance between the embedded plate and the misaligned inner support minus the radius of the inner support.

[0023] Preferably, in S1, the embedded plate is embedded inside the retaining wall through embedded connecting bars, and its outer surface is flush with the surface of the retaining wall.

[0024] Preferably, in S3, the positions of the strengthened joints of the steel beam and the positions of the embedded plate and the steel pipe inner support are in the same straight line in the vertical projection.

[0025] Preferably, in S2 and S4, the positions of the screw holes of the upper strengthening plate, the bottom strengthening plate and the sliding cover plate correspond to each other.

[0026] Preferably, in S5, the steel beam is an I-shaped steel or an H-shaped steel. One side of the flange is closely attached to the retaining wall, and the other side is closely attached to the rectangular movable head.

[0027] Preferably, in S7, the inner support is a steel pipe support, and flange plates are provided at both ends. Strengthening triangular plates are evenly arranged in the circumferential direction between the end flange plates and the inner support at the waist. The inner support is fixedly connected through the fixing bolts on the flange plates.

[0028] Preferably, in S7, flange plates are provided at both ends of the adjusting head, and the adjusting head is respectively bolted to the rectangular movable head and the inner support flange plate.

[0029] The beneficial effects of the technical solution involved in the present invention compared with the traditional technology are as follows:

[0030] 1. The rapid installation construction method of the steel pipe inner support can effectively utilize the embedded plate in the original design scheme, without the need to re-construct the embedded plate, effectively ensuring the installation speed of the inner support, reducing the space-time effect on the foundation pit, reducing the impact on surrounding buildings, and ensuring construction safety to the greatest extent.

[0031] 2. The vertical side plate and the bottom bottom plate of the rapid installation construction method of the steel pipe inner support can adapt to the misalignment of the embedded plate under different height differences through the strengthening effect of the triangular rib plates, greatly improving the construction applicability; the rectangular movable head is arranged at the vertical intersection node of the steel beam and the embedded plate, and can transfer the axial force of the inner support at the changed position to the original embedded plate position.

[0032] 3. The rapid installation construction method of the steel pipe inner support makes full use of the embedded plate in the original design scheme and can be recycled after the construction is completed, reducing material loss and reducing pollution at the construction site, which is beneficial to ensuring the construction site environment.

[0033] 4. The rectangular movable head can move slightly on the steel beam. Combined with the axial force servo system of the rectangular movable head steel support system, the axial force of the inner support can be quickly and effectively applied, and effective protection of the foundation pit can be completed.

[0034] 5. The rapid installation construction method of the steel pipe internal support can pre-process components such as side plates and steel beam cross-sections in the factory and complete the assembly by welding at the construction site, with fast installation speed and low construction difficulty. Description of the Drawings

[0035] Figure 1 It is a schematic diagram of the rapid installation structure of the steel pipe internal support with misaligned embedded plates on the foundation pit retaining wall;

[0036] Figure 2 It is a sectional view of the rapid installation structure of the steel pipe internal support with misaligned embedded plates on the foundation pit retaining wall (debugging of the steel beam cross-section: movement of the cross-beam sliding structure);

[0037] Figure 3 It is a sectional view of the rapid installation structure of the steel pipe internal support with misaligned embedded plates on the foundation pit retaining wall (after axial force construction: the cross-beam sliding structure is close to the retaining wall);

[0038] Figure 4 It is a schematic diagram of the connection between the force transfer frame body of the reinforced side plate section and the steel beam cross-section (the steel beam cross-section is close to the retaining wall);

[0039] Figure 5 It is a schematic diagram of the connection between the force transfer frame body of the reinforced side plate section and the steel beam cross-section (the steel beam cross-section is away from the retaining wall);

[0040] Figure 6 It is a schematic diagram of the connection between the force transfer frame body of the side plate - bottom support plate section and the steel beam cross-section (the steel beam cross-section is close to the retaining wall);

[0041] Figure 7 It is a schematic diagram of the connection between the force transfer frame body of the side plate - bottom support plate section and the steel beam cross-section (the steel beam cross-section is away from the retaining wall);

[0042] Figure 8 It is a schematic diagram of the force transfer frame body structure;

[0043] Figure 9 It is a side view of the force transfer frame body;

[0044] Figure 10 It is a three-dimensional schematic diagram of the connection between the force transfer frame body and the steel beam cross-section (the steel beam cross-section is close to the retaining wall);

[0045] Figure 11 It is a three-dimensional schematic diagram of the connection between the force transfer frame body and the steel beam cross-section (the steel beam cross-section is away from the retaining wall);

[0046] Figure 12 It is a side view of the strengthened joint of the steel beam cross-section (side view of the upper reinforcement plate);

[0047] Figure 13 It is a side view of the strengthened joint of the steel beam cross-section (side view of the flange of the steel beam cross-section);

[0048] Figure 14It is a schematic structural diagram of the crossbeam sliding structure;

[0049] Figure 15 It is a schematic diagram of the position of the embedded plate of the retaining wall (before the implementation of step S1);

[0050] Figure 16 It is a schematic structural diagram after the installation of the force transfer frame (after the implementation of step S1);

[0051] Figure 17 It is a schematic structural diagram after the hoisting of the profiled steel crossbeam (after the implementation of step S3);

[0052] Figure 18 It is a schematic structural diagram after the installation of the crossbeam sliding structure (after the implementation of step S4);

[0053] Figure 19 It is a schematic structural diagram after the debugging of the profiled steel crossbeam (after the implementation of step S5);

[0054] Figure 20 It is a construction flow chart of the rapid installation construction method of the embedded plate of the foundation pit retaining wall and the misaligned steel pipe internal support.

[0055] In the figure, the markings are as follows: 1 - retaining wall, 2 - embedded plate, 3 - embedded connecting bar, 4 - side plate, 5 - triangular rib plate, 6 - bottom support plate, 7 - bolt sliding hole, 8 - weld, 9 - sliding cover plate, 10 - sliding bottom plate, 11 - high-strength screw rod, 12 - fixing nut, 13 - profiled steel crossbeam, 14 - upper strengthening plate, 15 - bottom strengthening plate, 16 - strengthening side plate, 17 - support frame, 18 - rectangular flexible joint, 19 - control line, 20 - adjusting head, 21 - flange plate, 22 - internal support, 23 - fixing bolt, 24 - strengthening triangular plate, 25 - screw rod hole. Specific implementation mode

[0056] In order to deepen the understanding of the present invention, the following will refer to Figures 1 to 20 , and make a detailed description of the embodiments of the present invention. The following embodiments are implemented on the premise of the technical solution of the present invention, and the detailed implementation manners are given, but the protection scope of the present invention is not limited to the following embodiments.

[0057] In this embodiment, the distance between the embedded plate 2 and the misaligned steel pipe internal support 22 is 2.2 m. The rapid installation auxiliary structure of the embedded plate 2 of the foundation pit retaining wall 1 and the misaligned steel pipe internal support 22 is composed of a force transfer frame, a profiled steel crossbeam 13, a crossbeam sliding structure, a rectangular flexible joint 18, an adjusting head 20, etc.; the force transfer frame includes a side plate 4 with a height of 2.0 m and a width of 1.0 m, a bottom support plate 6 with a length of 1.0 m and a width of 0.5 m, and a triangular rib plate 5; the position and quantity of the side plate 4 correspond to the original embedded plate 2.

[0058] Combined with the attached Figure 20As shown, a rapid installation construction method for a misaligned steel pipe internal support with a pre-embedded plate in the foundation pit retaining wall includes the following construction steps.

[0059] S1. Design and installation of the force transfer frame: Combining with Attachment Figure 1 Attachment Figure 8 Attachment Figure 9 Attachment Figure 15 As shown, S1.1. The force transfer frame includes a side plate 4 connected to the pre-embedded plate 2 of the retaining wall 1, a bottom support plate 6 above the intersection of the misaligned internal support 22, and a reinforcing triangular rib plate 5 between the two; the top of the side plate 4 is fixedly connected to the pre-embedded plate 2 on the retaining wall 1 to form a weld 8, and the bottom of the side plate 4 is matched with the position of the misaligned steel pipe internal support 22; the triangular rib plate 5 is a triangular plate arranged between the bottom support plate 6 and the side plate 4, and symmetrically arranged groove-shaped screw sliding holes 7 are provided on the bottom support plate 6 on both sides of the triangular rib plate 5; S1.2. Weld the bottom support plate 6 to the bottom of the side plate 4 and be perpendicular to the side plate 4, and weld the triangular rib plate 5 to the center line of the bottom support plate 6 and the side plate 4 to form the force transfer frame; then combining with Attachment Figure 16 As shown, S1.3. Lift the force transfer frame to the position of the pre-embedded plate 2 for temporary fixation, and weld at the overlapping position of the pre-embedded plate 2 and the side plate 4 of the force transfer frame, so as to fix the force transfer frame at the pre-embedded plate 2.

[0060] Combining with Attachment Figure 2 Attachment Figure 3 As shown, the height of the side plate 4 is the distance between the pre-embedded plate 2 and the misaligned internal support 22 minus the radius of the internal support 22; the pre-embedded plate 2 is pre-embedded in the retaining wall 1 through the pre-embedded connecting bars 3, and its outer surface is flush with the surface of the retaining wall 1.

[0061] S2. Design of the strengthened joint of the steel section beam 13: Combining with Attachment Figure 1 Attachment Figure 12 Attachment Figure 13 Attachment Figure 17 ~Attachment Figure 19 As shown, the steel section beam 13 is arranged along the circumferential direction of the foundation pit at the position of the misaligned steel pipe internal support of the foundation pit retaining wall 1, and a strengthened joint is provided at the bottom of the bottom support plate 6. The strengthened joint of the steel section beam includes an upper strengthening plate 14 attached to the bottom support plate 6, a bottom strengthening plate 15 corresponding to the upper strengthening plate 14, and strengthening side plates 16 symmetrically arranged within 3 - 10 cm on both sides of the bottom support plate 6, and support frames 17 are symmetrically arranged on the outside of the steel section beam 13. Screw holes 25 are provided on the upper strengthening plate 14 and the bottom strengthening plate 15.

[0062] S3. Hoisting and temporary fixation of the steel section beam 13: Combining with Attachment Figure 1 Attachment Figure 17 As shown, hoist the segmented steel section beam 13 to the bottom of the bottom support plate 6 of the force transfer frame, and the position of the strengthened joint is vertically matched with the position of the pre-embedded plate 2.

[0063] Combining with Attachment Figure 4~Appendix Figure 7 、Appendix Figure 10 、Appendix Figure 11 As shown, the positions of the steel beam 13 strengthening nodes, the embedded plate 2, and the steel pipe internal support 22 are in the same straight line in the vertical projection.

[0064] S4. Fabrication and Installation of the Beam Sliding Structure: Combining with Appendix Figure 10 、Appendix Figure 11 、Appendix Figure 14 As shown, S4.1. The beam sliding structure includes a sliding cover plate 9, a sliding bottom plate 10, and high-strength screw rods 11. The bottom of the high-strength screw rods 11 is fixed to the sliding bottom plate 10. The sliding cover plate 9 is provided with screw holes 25 at the positions of the high-strength screw rods 11, and the sliding cover plate 9 can move up and down along the high-strength screw rods 11; Combining with Appendix Figure 18 As shown, S4.2. Install the sliding bottom plate 10 at the bottom of the bottom strengthening plate 15, and the high-strength screw rods 11 penetrate through the bottom strengthening plate 15, the upper strengthening plate 14, and the bottom support plate 6; S4.3. Install the sliding cover plate 9 on the top of the bottom support plate 6, and fix the beam sliding structure to the bolt sliding holes 7 on the bottom support plate 6 at the beam strengthening node through the fixing nuts 12.

[0065] S5. Debugging of the Steel Beam 13: Combining with Appendix Figure 2 ~Appendix Figure 7 、Appendix Figure 10 、Appendix Figure 11 As shown, S5.1. Apply an axial force evenly to the steel beam 13 to make the steel beam 13 move slightly in the direction perpendicular to the retaining wall 1, and the moving range is the difference between the spacing of the screw sliding holes 7 on the bottom support plate 6 and the spacing between the high-strength screw rods 11; Combining with Appendix Figure 19 As shown, S5.2. After debugging, move the steel beam 13 away from the retaining wall 1 to make it have a certain adjustment ability.

[0066] Combining with the attached drawings Appendix Figure 2 ~Appendix Figure 7 As shown, the steel beam 13 is an I-shaped steel or an H-shaped steel, with one side of the flange side closely attached to the retaining wall 1 and the other side closely attached to the rectangular movable head 18.

[0067] S6. Installation of the Rectangular Movable Head 18: Combining with Appendix Figure 1 、Appendix Figure 2 、Appendix Figure 3 As shown, install the rectangular movable head 18 on the top of the support frame 17 on the outer side of the steel beam 13 at the strengthening node.

[0068] S7. Installation of the Adjusting Head 20 and the Steel Pipe Internal Support 22: Combining with Appendix Figure 1 、Appendix Figure 2 、Appendix Figure 3As shown, an adjusting head 20 is installed outside the rectangular movable head 18 and fixedly connected through an end flange 21 and fixing bolts 23. An inner support 22 is sequentially installed outside the adjusting head 20 until the requirements for the foundation pit size are met.

[0069] Combined with the attached Figure 1 and the attached Figure 2 and the attached Figure 3 As shown, the inner support 22 is a steel pipe support, with flanges 21 provided at both ends. Strengthening triangular plates 24 are evenly arranged circumferentially between the end flange 21 and the waist inner support 22. The inner support 22 is fixedly connected through the fixing bolts 23 on the flange 21; the adjusting head 20 has flanges 21 at both ends and is bolted to the flanges 21 of the rectangular movable head 18 and the inner support 22 respectively.

[0070] S8. Axial force construction: Combined with the attached Figure 1 and the attached Figure 2 and the attached Figure 3 As shown, the stroke of the rectangular movable head 18 is adjusted through the side control line 19 of the rectangular movable head 18, the distance between the rectangular movable head 18 and the retaining wall 1 is controlled, and an axial force is applied to enable the inner support 22 to form an effective support.

[0071] Combined with the attached Figure 10 and the attached Figure 11 As shown, in S2 and S4, the positions of the upper strengthening plate 14, the bottom strengthening plate 15 and the screw holes 25 of the sliding cover plate 9 correspond to each other.

[0072] The above embodiments are only used to explain the technical concept of the present invention, rather than limiting the protection scope of the rights of the present invention. Any non-substantive modification made to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A rapid installation construction method for a steel pipe internal support with misaligned embedded plates in the foundation pit retaining wall, characterized in that, The construction steps include: S1. Design and installation of force transmission frame: S1.1, the force transmission frame comprises a side plate (4) connected to the embedded plate (2) of the enclosure wall (1), a bottom support plate (6) above the intersection of the offset inner support (22), and a reinforcing triangular rib plate (5) between the two; the top of the side plate (4) is fixedly connected to the embedded plate (2) on the enclosure wall (1) to form a weld (8), and the bottom of the side plate (4) matches the position of the offset steel pipe inner support (22); the triangular rib plate (5) is a triangular plate arranged between the bottom support plate (6) and the side plate (4), and grooved screw sliding holes (7) are symmetrically provided on the bottom support plates (6) on both sides of the triangular rib plate (5); S1.2, weld the bottom support plate (6) to the bottom of the side plate (4) and make it perpendicular to the side plate (4), and weld the triangular rib plate (5) on the center line of the bottom support plate (6) and the side plate (4) to form a force transmission frame; S1.

3. The force transmission frame is hoisted to the embedded plate (2) for temporary fixation, and the embedded plate (2) and the side plate (4) of the force transmission frame are welded at the overlapping position, so as to fix the force transmission frame to the embedded plate (2); S2. Design of the reinforced node of the steel beam (13): The steel beam (13) is arranged along the circumference of the foundation pit at the position of the support inside the steel pipe after the foundation pit retaining wall (1) is displaced, and a reinforced node is provided at the bottom of the bottom support plate (6). The reinforced node of the steel beam includes an upper reinforcement plate (14) fitted with the bottom support plate (6), a bottom reinforcement plate (15) corresponding to the upper reinforcement plate (14), and reinforced side plates (16) symmetrically arranged within 3 to 10 cm on both sides of the bottom support plate (6). A support frame (17) is symmetrically arranged on the outer side of the steel beam (13), and screw holes (25) are provided on the upper reinforcement plate (14) and the bottom reinforcement plate (15); S3, hoisting and temporary fixing of the steel beam (13): hoisting the steel beam (13) manufactured in sections to the bottom of the bottom support plate (6) of the force transmission frame, and strengthening the node position to match the position of the embedded plate (2) in the vertical direction; S4. Fabrication and installation of beam sliding structure: S4.1, the crossbeam sliding structure comprises a sliding cover plate (9), a sliding bottom plate (10) and a high-strength screw (11), the bottom of the high-strength screw (11) is fixed to the sliding bottom plate (10), the sliding cover plate (9) is provided with a screw hole (25) at the high-strength screw (11), and the sliding cover plate (9) can move up and down on the high-strength screw (11); S4.

2. Install the sliding bottom plate (10) at the bottom of the bottom reinforcement plate (15), and the high-strength screw (11) penetrates the bottom reinforcement plate (15), the upper reinforcement plate (14) and the bottom support plate (6); S4.

3. Install a sliding cover plate (9) on the top of the bottom support plate (6), and fix the crossbeam sliding structure in the bolt sliding hole (7) on the bottom support plate (6) at the crossbeam reinforcement node by means of fixing nuts (12); S5, steel beam (13) commissioning: S5.

1. By uniformly applying an axial force to the steel beam (13), the steel beam (13) is slightly moved in a direction perpendicular to the retaining wall (1), wherein the range of movement is the difference between the spacing of the screw rod sliding holes (7) on the bottom support plate (6) and the spacing between the high-strength screw rods (11); S5.2 After debugging, move the profiled steel cross beam (13) away from the retaining wall (1) to endow it with certain adjustment ability; S6 Installation of rectangular flexible joint (18): Install the rectangular flexible joint (18) on the top of the support frame (17) on the outer side of the profiled steel cross beam (13) at the strengthened joint; S7 Installation of adjusting head (20) and steel pipe internal support (22): Install the adjusting head (20) on the outer side of the rectangular flexible joint (18), and fixedly connect them through the end flange (21) and fixing bolts (23), and sequentially install the internal support (22) on the outer side of the adjusting head (20) until the foundation pit size requirements are met; S8 Axial force construction: Adjust the stroke of the rectangular flexible joint (18) through the control line (19) on the side of the rectangular flexible joint (18), control the distance from the retaining wall (1), and apply axial force to enable the internal support (22) to form an effective support.

2. The rapid installation construction method of the embedded steel pipe internal support with misaligned embedded plates for the foundation pit retaining wall according to claim 1, characterized in that, In the above S1, the height of the side plate (4) is the distance between the embedded plate (2) and the misaligned internal support (22) minus the radius of the internal support (22).

3. The rapid installation construction method of the embedded steel pipe internal support with misaligned embedded plates for the foundation pit retaining wall according to claim 1, characterized in that In the above S1, the embedded plate (2) is embedded in the retaining wall (1) through the embedded connecting bars (3), and its outer surface is flush with the surface of the retaining wall (1).

4. The rapid installation construction method of the embedded steel pipe internal support with misaligned embedded plates for the foundation pit retaining wall according to claim 1, characterized in that, In the above S3, the positions of the strengthened joints of the profiled steel cross beam (13), the embedded plate (2), and the steel pipe internal support (22) are collinear in the vertical projection.

5. The rapid installation construction method of the embedded plate misaligned steel pipe internal support for the foundation pit retaining wall according to claim 1, characterized in that, In the above S2 and S4, the positions of the upper strengthening plate (14), the bottom strengthening plate (15), and the screw holes (25) of the sliding cover plate (9) correspond to each other.

6. The rapid installation construction method of the embedded plate misaligned steel pipe internal support for the foundation pit retaining wall according to claim 1, characterized in that In the above S5, the profiled steel cross beam (13) is an I-shaped steel or an H-shaped steel, with one side of the flange closely attached to the retaining wall (1) and the other side closely attached to the rectangular flexible joint (18).

7. The rapid installation construction method of the embedded plate misaligned steel pipe internal support for the foundation pit retaining wall according to claim 1, characterized in that, In the above S7, the internal support (22) is a steel pipe support, with flange plates (21) provided at both ends. Strengthening triangular plates (24) are evenly arranged in the circumferential direction between the end flange plates (21) and the waist internal support (22). The internal support (22) is fixedly connected through the fixing bolts (23) on the flange plate (21).

8. The rapid installation construction method of the embedded steel pipe internal support with misaligned embedded plates for the foundation pit retaining wall according to claim 1, characterized in that, In the above S7, the adjusting head (20) is provided with flange plates (21) at both ends, and is bolted to the flange plates (21) of the rectangular flexible joint (18) and the internal support (22) respectively.

Images