A precast steel reinforced concrete bracing system and method of implementing the same

Abstract

The application discloses a prefabricated steel reinforced concrete support system and an implementation method thereof, and belongs to the technical field of building construction, and comprises a plurality of support piles arranged on the side walls of a foundation pit, and a prefabricated concrete retaining wall which is detachably connected between adjacent support piles and in which a pre-embedded part is pre-embedded; a prefabricated steel reinforced concrete beam horizontally arranged in the foundation pit, wherein the prefabricated steel reinforced concrete beam comprises a standard section, and a servo-hydraulic section which is detachably connected to the end of the standard section and corresponds to the pre-embedded part; a plurality of stand columns arranged at the bottom of the foundation pit and used for supporting the standard section, wherein the stand columns are all provided with connecting parts on the circumferential sides, and a connecting section is detachably connected between the end of the standard section and the connecting part and faces the stand column; and the application aims at solving the problems of the existing foundation pit support system, such as complicated construction procedures, long construction period, large investment and non-reusable.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a precast steel-concrete support system and its implementation method. Background Technology

[0002] Excavation pit support is a temporary measure for supporting, reinforcing, protecting, and controlling groundwater in order to protect the underground main structure and the surrounding environment. A commonly used excavation pit support system is a vertical retaining structure (diaphragm wall or bored piles) plus internal bracing. Internal bracing often uses reinforced concrete supports, which are rigid, have good deformation control, and are highly resistant to compression and safe. However, it is often constructed using cast-in-place methods and requires subsequent removal, resulting in complex construction procedures, long construction periods, high investment costs, and non-reusability. Summary of the Invention

[0003] In view of this, the present invention discloses a precast steel-concrete support system and its implementation method, the purpose of which is to solve the problems of cumbersome construction procedures, long construction period, large investment and non-reusability of internal support in the existing foundation pit support system.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A precast steel-concrete composite support system includes several support piles installed on the sidewalls of a foundation pit, with precast concrete retaining walls detachably connected between adjacent support piles, and embedded parts pre-embedded within the precast concrete retaining walls; several layers of horizontally oriented precast steel-concrete composite beams are installed within the foundation pit, each precast steel-concrete composite beam including a standard section, with a servo hydraulic section detachably connected to the corresponding embedded part at the end of the standard section facing the embedded part; several columns for supporting the standard sections are installed at the bottom of the foundation pit, with connectors installed around the perimeter of each column, and a connecting section detachably connected between the end of the standard section facing the column and the connector.

[0005] In this scheme, the retaining structure is composed of support piles and precast concrete retaining walls, while the internal support is composed of precast steel-concrete beams and columns. The prefabricated construction method eliminates the need for on-site pouring, effectively shortening the construction period. It is also easy to install and dismantle and can be reused.

[0006] Furthermore, the connector is ball-jointed to the column, and a locking structure is provided between the connector and the column. The connector has mounting holes, and through holes are provided on the inner sidewalls of the mounting holes. A locking rod slides elastically within the through holes. An annular block is rotatably connected to the circumference of the connector, and several grooves for accommodating the locking rod are provided on the inner sidewalls of the annular block. The connecting section includes a column, one end of which is detachably connected to a seat. The seat is ball-jointed to the corresponding end of the standard section, and a limiting structure is provided between the seat and the standard section. An adjusting section is slidably fitted onto the other end of the column, and a hydraulic pushing structure is provided between the column and the adjusting section. The end of the adjusting section is detachably provided with a mounting protrusion corresponding to the mounting hole, and a locking hole for cooperating with the locking rod is provided on the sidewall of the mounting protrusion.

[0007] After the support piles, precast concrete retaining walls, and columns are installed, a connecting section is installed at the end of the standard section facing the column, and a servo hydraulic section is installed at the end of the standard section facing the precast concrete retaining wall. If the standard section is located between columns, connecting sections are installed at both ends of the standard section. The first layer of precast steel-concrete beams is hoisted, and the installation protrusions at the ends of the connecting sections are inserted into the installation holes. The annular block is rotated, pressing the locking rod into the locking hole and maintaining the locking structure and the locking device of the limiting structure, thus connecting and fixing the standard section to the column. The servo hydraulic section at the end of the standard section is then connected to the embedded parts on the precast concrete retaining wall, and the pressure of the servo hydraulic section is adjusted to provide stable support for the precast concrete retaining wall. After construction, the annular block is rotated in the opposite direction, and the locking rod slides into the groove under elastic action, releasing the connection between the standard section and the column for quick recycling.

[0008] When vibrations during excavation, loose soil, or deviations in column installation cause the column to tilt or settle, a traction force is applied to the standard section connected to the column to release the locking and limiting structures. Different traction forces are applied to the standard section to restore it to a horizontal position, ensuring that the servo hydraulic section at the end of the standard section provides normal support to the precast concrete retaining wall. If the connecting section is damaged, it is replaced. The orientation of the connecting section is then reversed, and the adjusting section is moved relative to the column via a hydraulic push structure to adjust the length of the connecting section, ensuring that the connecting section connects the standard section and the column. Finally, the pins and locking pins are reinstalled to restore the connection between the standard section and the column. This process avoids errors in applying support force to the precast concrete retaining wall, which could affect the protective effect.

[0009] Furthermore, the limiting structure includes several support sleeves that are ball-jointed to the corresponding ends of the standard section. Each end of the support sleeve is slidably connected to a support rod, and the end of the support rod is ball-jointed to the corresponding end of the seat. Each support sleeve has a pin on its sidewall for limiting the sliding of the support rod. An annular block is slidably connected to the support sleeve, and an auxiliary support rod is fixed between adjacent annular blocks.

[0010] When the connecting section needs adjustment, remove the pin to allow the support rod to slide relative to the support sleeve; after the connecting section adjustment is completed, simply reinstall the pin; the whole operation is simple and quick; in addition, the cooperation between the ring block and the auxiliary support rod enhances the shear resistance of the device's limiting structure and prevents it from breaking.

[0011] Furthermore, the locking structure includes a support rod, one end of which is connected to a connector by a ball joint. Several sliding grooves facing the connector are provided on the side wall of the column. A sliding seat is slidably connected in each of the sliding grooves. A locking pin is provided between the sliding seat and the sliding groove. The other end of the support rod is connected to the corresponding sliding seat by a ball joint.

[0012] When the connecting section needs adjustment, remove the locking pin to allow the slide to slide within the groove as the connecting part deflects; after the connecting section adjustment is completed, simply reinstall the locking pin to limit the deflection of the connecting part using the slide and the support rod; the whole operation process is simple and quick.

[0013] Furthermore, a support plate is slidably sleeved on the column, and a number of diagonal braces are ball-jointed on the support plate. The ends of the diagonal braces are detachably connected to the column, and the length of the diagonal braces is adjustable.

[0014] By installing support plates to increase the contact area with the soil, and then supporting the columns with support plates and diagonal braces, the settlement and tilting of the columns caused by construction disturbances and loose soil are reduced.

[0015] Furthermore, a protective cover for shielding the connector is detachably connected to the side wall of the column.

[0016] A method for implementing a precast steel-concrete composite support system includes the following steps: 1) Retaining wall construction: Excavate the trench along the edge of the foundation pit, install the support piles, and use hoisting equipment to hoist the precast concrete retaining wall, and connect and fix the precast concrete retaining wall to the adjacent support piles; 2) Support installation: Excavate the corresponding through holes and hoist the column into the through holes. Slide the support plate to make the support plate fit with the ground. Adjust the length of the diagonal brace and connect the diagonal brace to the column to reduce the possibility of column settlement. Install the connecting section at the end of the standard section facing the column and the servo hydraulic section at the end of the standard section facing the precast concrete retaining wall. If the standard section is located between columns, install the connecting section at both ends of the standard section. Remove the protective cover on the first floor, hoist the precast steel-concrete beam on the first floor, insert the installation protrusion at the end of the connecting section into the installation hole, and rotate the ring block. The ring block will press the locking rod into the locking hole and maintain the locking structure and the locking device of the limiting structure, thereby connecting and fixing the standard section to the column. Then connect the servo hydraulic section at the end of the standard section to the embedded part on the precast concrete retaining wall, and adjust the pressure of the servo hydraulic section to provide stable support for the precast concrete retaining wall. 3) Excavation of the foundation pit: The foundation pit is excavated using an excavator. During the initial excavation, the area covered by the support plate is avoided. The area covered by the support plate is excavated in sequence in the later stages. During the later stages of excavation, the area covered by the support plate is excavated in batches. After the area covered by the support plate is excavated, the connection between the diagonal brace and the column is removed, and the support plate is slid to make the support plate fit with the ground again. The diagonal brace is then reconnected to the column before the next batch of area covered by the support plate is excavated. 4) Excavation complete: Repeat steps 3) and 4) until the excavation of the foundation pit is completed; 5) Adjustment of precast steel-concrete support beam: When the column tilts or settles due to deviations during excavation or column installation, apply traction force to the standard section connected to the column and remove the corresponding pins and locking pins; apply different traction forces to the standard section to restore it to level, ensuring that the servo hydraulic section at the end of the standard section supports the precast concrete retaining wall in the correct orientation; if the connecting section is damaged, replace it; then deflect the orientation of the connecting section and use the hydraulic push structure to move the adjusting section relative to the column to adjust the length of the connecting section, ensuring that the connecting section connects the standard section and the column; then reinstall the pins and locking pins to restore the connection between the standard section and the column.

[0017] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0018] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a longitudinal sectional view of the precast steel-concrete beam in an embodiment of the present invention; Figure 4 This is a longitudinal sectional view of the connector in an embodiment of the present invention; Figure 5 This is a schematic diagram of the column structure in an embodiment of the present invention.

[0019] The following are the markings in the attached diagram: 1. Support pile; 2. Precast concrete retaining wall; 3. Standard section; 4. Servo hydraulic section; 5. Column; 6. Connector; 7. Locking rod; 8. Ring block; 9. Groove; 10. Column body; 11. Seat body; 12. Adjustment section; 13. Hydraulic push structure; 14. Mounting protrusion; 15. Support sleeve; 16. Support rod; 17. Ring block; 18. Auxiliary strut; 19. Support rod; 20. Slide seat; 21. Support plate; 22. Diagonal strut. Detailed Implementation

[0020] like Figures 1-5 As shown: A precast steel-concrete support system includes several support piles 1 installed on the sidewall of a foundation pit, and precast concrete retaining walls 2 detachably connected between adjacent support piles 1. Embedded parts are pre-embedded within the precast concrete retaining walls 2. Several layers of horizontally oriented precast steel-concrete beams are arranged within the foundation pit. Each precast steel-concrete beam includes a standard section 3. A servo hydraulic section 4, detachably connected to the embedded part, is provided at the end of the standard section 3 facing the embedded part. In this embodiment, the servo hydraulic section 4 adopts a conventional servo hydraulic structure, which is a common technical means for those skilled in the art and therefore not described in detail. Several columns 5 for supporting the standard sections 3 are arranged at the bottom of the foundation pit. Connecting parts 6 are provided around the perimeter of each column 5. A connecting section is detachably connected between the end of the standard section 3 facing the column 5 and the connecting part 6.

[0021] In this scheme, the retaining structure is composed of support piles 1 and precast concrete retaining walls 2, while the internal support is composed of precast steel-concrete beams and columns 5. The prefabricated construction method eliminates the need for on-site pouring, effectively shortening the construction period. It is also easy to install and dismantle and can be reused.

[0022] In this embodiment, the connector 6 is ball-jointed to the column 5, and a locking structure is provided between the connector 6 and the column 5. The connector 6 has an installation hole, and a through hole is provided on the inner side wall of each installation hole. A locking rod 7 slides in the through hole, and a return spring (not shown in the figure) is provided between the locking rod 7 and the through hole. An annular block 8 is rotatably connected to the circumference of the connector 6. A plurality of grooves 9 for accommodating the locking rod 7 are provided on the inner side wall of the annular block 8. The connecting section includes a column 10. One end of the column 10 is detachably connected to a seat 11. The seat 11 is ball-jointed to the corresponding end of the standard section 3, and a limiting structure is provided between the seat 11 and the standard section 3. An adjusting section 12 is slidably sleeved on the other end of the column 10. A hydraulic pushing structure 13 is provided between the column 10 and the adjusting section 12. The end of the adjusting section 12 is detachably provided with an installation protrusion 14 corresponding to the installation hole. A locking hole for cooperating with the locking rod 7 is provided on the side wall of the installation protrusion 14.

[0023] After the support piles 1, precast concrete retaining wall 2, and columns 5 are installed, a connecting section is installed at the end of standard section 3 facing column 5, and a servo hydraulic section 4 is installed at the end of standard section 3 facing precast concrete retaining wall 2. If standard section 3 is located between columns 5, connecting sections are installed at both ends of the standard section. The first layer of precast steel-concrete beams is hoisted, and the mounting protrusion 14 at the end of the connecting section is inserted into the mounting hole. The annular block 8 is rotated, pressing the locking rod 7 into the locking hole and maintaining the locking structure and the locking device of the limiting structure, thereby connecting and fixing standard section 3 to column 5. Then, the servo hydraulic section 4 at the end of standard section 3 is connected to the embedded part on precast concrete retaining wall 2, and the pressure of the servo hydraulic section 4 is adjusted to provide stable support for precast concrete retaining wall 2. After construction, the annular block 8 is rotated in the opposite direction, and the locking rod 7 slides into the groove 9 under elastic action, thus releasing the connection between standard section 3 and column 5 for quick recycling.

[0024] When vibrations during excavation, loose soil, or deviations in the installation of column 5 cause column 5 to tilt or settle, a traction force is applied to the standard section 3 connected to column 5 to release the restrictions of the locking and limiting structures. Different traction forces are applied to the standard section 3 to restore it to a horizontal position, ensuring that the servo hydraulic section 4 at the end of the standard section 3 provides normal support to the precast concrete retaining wall 2. If the connecting section is damaged, it is replaced. The orientation of the connecting section is then reversed, and the adjusting section 12 is moved relative to the column 10 via the hydraulic push structure 13 to adjust the length of the connecting section, ensuring that the connecting section connects the standard section 3 and column 5. The pins and locking pins are then reinstalled to restore the connection between the standard section 3 and column 5. This is done to avoid errors in applying support force to the precast concrete retaining wall 2, which could affect the protective effect.

[0025] In this embodiment, the limiting structure includes several support sleeves 15 that are ball-jointed to the corresponding ends of the standard segment 3. Each end of the support sleeve 15 is slidably connected to a support rod 16, and the end of the support rod 16 is ball-jointed to the corresponding end of the seat body 11. Each side wall of the support sleeve 15 is provided with a pin for limiting the sliding of the support rod 16 (a conventional technique for those skilled in the art, so it is not shown in the figure). An annular block 8 is slidably connected to the support sleeve 15, and an auxiliary support rod 18 is fixed between adjacent annular blocks 8.

[0026] When the connecting section needs adjustment, remove the pin so that the support rod 16 can slide relative to the support sleeve 15; after the connecting section adjustment is completed, simply reinstall the pin; the whole operation process is simple and quick; in addition, the shear resistance of the device's limiting structure is enhanced by the cooperation of the annular block 8 and the auxiliary support rod 18, preventing its breakage.

[0027] In this embodiment, the locking structure includes a support rod 19, one end of which is connected to the connector 6 by a ball joint. The side wall of the column 5 is provided with a plurality of sliding grooves facing the connector 6. Each sliding groove is slidably connected to a slide seat 20. A locking pin (a conventional technique for those skilled in the art, so not shown in the figure) is provided between the slide seat 20 and the sliding groove. The other end of the support rod 19 is connected to the corresponding slide seat 20 by a ball joint.

[0028] When the connecting section needs adjustment, remove the locking pin so that the slide 20 can slide in the groove as the connecting part 6 deflects; after the connecting section adjustment is completed, simply reinstall the locking pin to limit the deflection of the connecting part 6 using the slide 20 and the support rod 19; the whole operation process is simple and quick.

[0029] In this embodiment, a support plate 21 is slidably sleeved on the column 5, and a plurality of diagonal bracing rods 22 are ball-jointed on the support plate 21. The ends of the diagonal bracing rods 22 are detachably connected to the column 5, and the length of the diagonal bracing rods 22 is adjustable.

[0030] By setting up a support plate 21 to increase the contact area with the soil, and then adjusting the length of the diagonal brace 22, the support plate 21 and the diagonal brace 22 support the column 5, reducing the settlement and tilting of the column 5 caused by construction disturbance, loose soil and other reasons.

[0031] In this embodiment, a protective cover for shielding the connector 6 is detachably connected to the side wall of the column 5; this shields the connector 6 and the sliding groove 20, preventing mud from clogging them.

[0032] A method for implementing a precast steel-concrete composite support system includes the following steps: 1) Retaining wall construction: Excavate a trench along the edge of the foundation pit, install support piles 1, and use hoisting equipment to hoist the precast concrete retaining wall 2, and connect and fix the precast concrete retaining wall 2 to the adjacent support piles 1. 2) Support installation: Excavate the corresponding through hole and hoist the column 5 into the through hole. Slide the support plate 21 to make the support plate 21 fit with the ground. Adjust the length of the diagonal brace 22 and connect the diagonal brace 22 to the column 5 to reduce the possibility of column 5 settling. Install the connecting section at the end of the standard section 3 facing the column 5, and install the servo hydraulic section 4 at the end of the standard section 3 facing the precast concrete retaining wall 2. If the standard section 3 is located between the columns 5, the connecting section is installed at both ends of the standard section 3. Remove the protective cover on the first floor, hoist the precast steel-concrete beam on the first floor, insert the installation protrusion 14 at the end of the connecting section into the installation hole, and rotate the annular block 8. The annular block 8 will press the locking rod 7 into the locking hole and maintain the locking structure and the locking device of the limiting structure, thereby connecting and fixing the standard section 3 to the column 5. Then connect the servo hydraulic section 4 at the end of the standard section 3 to the embedded part on the precast concrete retaining wall 2, and adjust the pressure of the servo hydraulic section 4 to provide stable support for the precast concrete retaining wall 2. 3) Excavation of the foundation pit: The foundation pit is excavated using an excavator; during the initial excavation, the area covered by the support plate 21 is avoided, and the area covered by the support plate 21 is excavated sequentially in the later stages; during the later stages of excavation, the area covered by the support plate 21 is worked on in batches. After the area covered by the support plate 21 is excavated, the connection between the diagonal brace 22 and the column 5 is removed, and the support plate 21 is slid to make the support plate 21 fit against the ground again. The diagonal brace 22 is then reconnected to the column 5, and then the next batch of areas covered by the support plate 21 is excavated. 4) Excavation complete: Repeat steps 3) and 4) until the excavation of the foundation pit is completed; 5) Adjustment of precast steel-concrete support beam: When the column 5 tilts or settles due to deviations in the excavation process or installation, apply traction force to the standard section 3 connected to the column 5 and remove the corresponding pin and locking pin; apply different traction forces to the standard section 3 to restore it to a horizontal position, ensuring that the servo hydraulic section 4 at the end of the standard section 3 supports the precast concrete retaining wall 2 in the correct orientation; if the connecting section is damaged, replace it; then deflect the orientation of the connecting section and use the hydraulic push structure 13 to move the adjusting section 12 relative to the column 10 to adjust the length of the connecting section, ensuring that the connecting section connects the standard section 3 and the column 5; then reinstall the pin and locking pin to restore the connection between the standard section 3 and the column 5.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A precast steel-concrete composite support system, characterized in that: The structure includes several support piles installed on the sidewalls of the foundation pit, with precast concrete retaining walls detachably connected between adjacent support piles. Embedded parts are pre-embedded within the precast concrete retaining walls. Several layers of horizontally oriented precast steel-concrete beams are installed within the foundation pit. Each precast steel-concrete beam includes a standard section, and a servo hydraulic section detachably connected to the corresponding embedded part is provided at the end of each standard section facing the embedded part. Several columns supporting the standard sections are installed at the bottom of the foundation pit. Connectors are provided around each column, and a connecting section is detachably connected between the end of each standard section facing the column and the connecting part. The connecting part is ball-jointed to the column, and a locking structure is provided between the connecting part and the column. The connecting part has mounting holes, and through holes are provided on the inner sidewalls of each mounting hole. A locking rod slides elastically within each through hole. An annular block is rotatably connected around the connecting part. The inner wall has several grooves for accommodating locking rods; the connecting section includes a column, one end of which is detachably connected to a seat, the seat being ball-jointed to the corresponding end of the standard section, and a limiting structure is provided between the seat and the standard section; the other end of the column is slidably fitted with an adjusting section, and a hydraulic pushing structure is provided between the column and the adjusting section; the end of the adjusting section is detachably provided with a mounting protrusion corresponding to the mounting hole, and the side wall of the mounting protrusion has a locking hole that mates with the locking rod; the limiting structure includes several support sleeves ball-jointed to the corresponding ends of the standard section, each support sleeve having a support rod slidably connected to its end coaxially, and the end of the support rod being ball-jointed to the corresponding end of the seat; each support sleeve has a pin on its side wall for limiting the sliding of the support rod; annular blocks are slidably connected to the support sleeves, and auxiliary support rods are fixed between adjacent annular blocks.

2. The precast steel-concrete composite support system according to claim 1, characterized in that: The locking structure includes a support rod, one end of which is connected to a connector by a ball joint. Several sliding grooves facing the connector are opened on the side wall of the column. A sliding seat is slidably connected in each of the sliding grooves. A locking pin is provided between the sliding seat and the sliding groove. The other end of the support rod is connected to the corresponding sliding seat by a ball joint.

3. The precast steel-concrete composite support system according to claim 2, characterized in that: A support plate is slidably sleeved on the column, and a number of diagonal braces are ball-jointed on the support plate. The ends of the diagonal braces are detachably connected to the column, and the length of the diagonal braces is adjustable.

4. A precast steel-concrete composite support system according to claim 3, characterized in that: The column sidewall is detachably connected to a protective cover for shielding the connector.

5. The implementation method of a precast steel-concrete composite support system according to claim 4, characterized in that, The steps include the following: 1) Retaining wall construction: Excavate the trench along the edge of the foundation pit, install the support piles, and use hoisting equipment to hoist the precast concrete retaining wall, and connect and fix the precast concrete retaining wall to the adjacent support piles; 2) Support installation: Excavate the corresponding through holes and hoist the column into the through holes. Slide the support plate to make the support plate fit with the ground. Adjust the length of the diagonal brace and connect the diagonal brace to the column to reduce the possibility of column settlement. Install the connecting section at the end of the standard section facing the column and the servo hydraulic section at the end of the standard section facing the precast concrete retaining wall. If the standard section is located between columns, install the connecting section at both ends of the standard section. Remove the protective cover on the first floor, hoist the precast steel-concrete beam on the first floor, insert the installation protrusion at the end of the connecting section into the installation hole, and rotate the ring block. The ring block will press the locking rod into the locking hole and maintain the locking structure and the locking device of the limiting structure, thereby connecting and fixing the standard section to the column. Then connect the servo hydraulic section at the end of the standard section to the embedded part on the precast concrete retaining wall, and adjust the pressure of the servo hydraulic section to provide stable support for the precast concrete retaining wall. 3) Excavation of the foundation pit: The foundation pit is excavated using an excavator. During the initial excavation, the area covered by the support plate is avoided. The area covered by the support plate is excavated in sequence in the later stages. During the later stages of excavation, the area covered by the support plate is excavated in batches. After the area covered by the support plate is excavated, the connection between the diagonal brace and the column is removed, and the support plate is slid to make the support plate fit with the ground again. The diagonal brace is then reconnected to the column before the next batch of area covered by the support plate is excavated. 4) Excavation complete: Repeat steps 3) and 4) until the excavation of the foundation pit is completed; 5) Adjustment of Precast Steel-Concrete Reinforced Concrete Support Beams: When vibrations during excavation, loose soil, or deviations in column installation cause the column to tilt or settle, apply traction to the standard section connecting the column and remove the corresponding pins and locking pins. Apply different traction forces to the standard section to restore it to a horizontal position, ensuring that the servo hydraulic section at the end of the standard section supports the precast concrete retaining wall in the correct orientation. If the connecting section is damaged, replace it. Then, reverse the orientation of the connecting section and use a hydraulic push structure to move the adjusting section relative to the column to adjust the length of the connecting section, ensuring that the connecting section connects the standard section and the column. Finally, reinstall the pins and locking pins to restore the connection between the standard section and the column.

Images