Displacement deviation rectifying device for prestressed space structure

Abstract

The utility model discloses a displacement deviation rectifying device for a prestressed space structure, which comprises a structural column and a support arranged on the structural column, and further comprises a pushing device and a stay cable which are respectively arranged on two sides of the structural column, the pushing device comprises a driving mechanism for pushing the support, the pushing device is positioned on the deviation side of the support, and the stay cable is positioned on the support. The stay cable is connected with the ground and the upper portion of the structural column. According to the scheme, the prestressed space structure is effectively rectified through the pushing devices and the stay cables which are arranged on the two sides of the structural column, additional bending moment caused by support deviation to the structural column is avoided, and the stress reasonability and safety of the whole structure are improved; a stay cable and a PLC synchronous pushing control system are adopted, it is guaranteed that additional bending moment borne by a structural column in the deviation rectifying process is small, generated deformation and damage are small, stress is reasonable, the construction risk is small, and safety is high; the device is simple, low in construction difficulty, high in operability, wide in application range and suitable for various structures such as steel structures and reinforced concrete.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation engineering, in particular to a displacement correction device for a prestressed space structure. Background Art

[0002] In recent years, large-span prestressed spatial structures have been widely used in large projects such as stadiums, airports, exhibition centers, and high-speed rail stations. Prestressing of spatial structures will produce an unfavorable additional reaction force on the lower structure. In order to reduce this effect, the support needs to be constrained and released during the tensioning stage, and the support and the structural column are fixed after the tensioning is completed. The spatial structure is complex in force, with different shapes and uneven distribution of its own stiffness. The lateral stiffness of its lower structural column is also different. Prestressing under the condition of constraint release will cause the support to shift, and it is easy for the roof spatial structure to not coincide with the center of the top of the structural column and the overall structure to be offset, ranging from more than ten millimeters to tens of millimeters. In addition, there may be certain errors in the performance of the material, the size of the component, and the installation position, which will further lead to the inability to align the center of the support with the center of the structural column, resulting in a large additional bending moment, which is not conducive to the stress of the structure.

[0003] For example, the Chinese patent publication number CN109653511A, published on April 19, 2019, is called "Large-span bidirectional mixed prestressed complete set construction method", which includes in-depth design, positioning and laying out, non-prestressed tendon construction, prestressed tendon construction, prestressed tensioning, duct grouting and end plugging. The invention is easy to construct and has good working effect.

[0004] The disadvantage of the existing patent is that the existing prestressed spatial structure will cause the support to shift when prestressing under the condition of constraint release, which may easily lead to the roof spatial structure and the center of the top of the structural column not coinciding and the overall structure being offset. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the existing prestressed spatial structure will cause support displacement when prestressing is performed under constraint release conditions, which in turn causes the roof spatial structure and the center of the structural column top to not coincide with each other and the overall structure to be displaced. A displacement correction device for a prestressed spatial structure is provided, which can effectively correct the prestressed spatial structure and improve the rationality of the force and safety of the overall structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A displacement correction device for a prestressed spatial structure includes a structural column and a support arranged on the structural column, and also includes a jacking device and an inclined cable respectively arranged on both sides of the structural column, the jacking device includes a driving mechanism for jacking the support, the jacking device is located on the offset side of the support, and the inclined cable connects the ground and the upper part of the structural column. The displacement correction device for a prestressed spatial structure described in this scheme effectively corrects the prestressed spatial structure through the jacking device and the inclined cable arranged on both sides of the structural column, avoids the bearing offset from generating additional bending moment on the structural column, and improves the rationality and safety of the force of the overall structure. The jacking device is located on the offset side of the support, and the offset side refers to the direction in which the center of the support deviates from the center of the structural column, that is, the jacking device is located on the side where the center of the support deviates from the center of the structural column, and the jacking device and the center of the support are located on the same side of the center of the structural column; the inclined cable is located on the other side of the offset side of the support on the structural column, that is, the jacking device and the inclined cable are respectively located on both sides of the structural column. The driving mechanism pushes the support to gradually correct the deviation, so that the center of the support is aligned with the center of the top of the structural column. During the correction process, the pushing device is subjected to the reaction force transmitted by the driving mechanism, and generates a reaction force in the existing deviation direction (i.e., toward the deviation direction) on the upper part of the structural column. As a result, the top of the structural column tends to deform, and the inclined cable is axially pulled to limit the lateral deformation of the structural column. The use of inclined cables ensures that the additional bending moment, deformation and damage to the structural column during the correction process are small, the force is reasonable, the construction risk is small, and the safety is high. This solution has a simple device, low construction difficulty, strong operability, and a wide range of applications. It is suitable for various structures such as steel structures and reinforced concrete.

[0008] Preferably, the jacking device further comprises a reaction frame arranged on the structural column, the reaction frame is located on the offset side of the support, and the driving mechanism is arranged on the reaction frame. The reaction frame can be a corbel reaction frame, and the corbel reaction frame is welded to the upper end side wall of the structural column. The corbel reaction frame can be made of reinforced concrete or steel structure according to the material of the structural column and the convenience of construction.

[0009] Preferably, there are multiple inclined cables, and the multiple inclined cables are located on the opposite side of the offset side of the support. There are multiple inclined cables to ensure that the additional bending moment, deformation and damage to the structural column during the correction process are small, the force is reasonable, the construction risk is small, and the safety is high. For example, two inclined cables with different angles are set on the opposite side of the reaction frame to balance the horizontal reaction force on the structural column during the correction process to avoid generating a large additional bending moment in the structural column. The connection between the inclined cable and the structural column can be welded to the column steel; the connection between the bottom and the floor structure or the ground can be made by embedded parts, pre-embedded short steel beams, etc.

[0010] Preferably, a polytetrafluoroethylene plate is provided at the upper end of the structural column, the support is located on the polytetrafluoroethylene plate, and a polytetrafluoroethylene plate with a small friction coefficient is laid between the support and the structural column to ensure that the deviation correction can be carried out smoothly.

[0011] Preferably, the driving mechanism is connected to a steel pressure plate through an adapter, and the steel pressure plate abuts against the side wall of the support. The side of the support is a circular arc surface, a plane or other different structural surfaces, and the steel pressure plate is adjusted in angle through adapters of different specifications, so that the steel pressure plate fits the side wall of the support, so that the driving mechanism is subjected to reasonable force when pushing the support, and the damage is small.

[0012] Preferably, the driving mechanism comprises a driving shaft, the central axis of which is arranged horizontally. The driving mechanism may adopt a jack, the central axis of which is arranged horizontally.

[0013] Preferably, a plurality of inclined cables are symmetrically arranged according to the central axis of the driving shaft, so as to ensure that the additional bending moment, deformation and damage to the structural column during the deviation correction process are small, the force is reasonable, the construction risk is small, and the safety is high.

[0014] Preferably, the thrust generated by the jacking device on the support passes through the center of the support and the center of the structural column.

[0015] Preferably, a limiting portion is provided on the upper end surface of the structural column, and the structural column limits the support on the structural column through the limiting portion. The limiting portion limits the support, and when a polytetrafluoroethylene slide plate is provided on the upper end surface of the structural column, the limiting portion is located on the polytetrafluoroethylene slide plate.

[0016] Preferably, a PLC control system is further included. There are multiple structural columns, and the jacking devices correspond to the structural columns one by one. The PLC control system is connected to the jacking devices. A plurality of structural columns and supports are provided in the prestressed spatial structure. The PLC control system is connected to the jacking devices to synchronously push the supports, so as to ensure that the additional bending moment, deformation and damage to the structural columns during the deviation correction process are small, the force is reasonable, the construction risk is small, and the safety is high.

[0017] Therefore, the utility model has the following beneficial effects: the prestressed spatial structure is effectively corrected by the jacking device and the inclined cable arranged on both sides of the structural column, so as to avoid the additional bending moment of the structural column caused by the deviation of the support, and improve the rationality of the force and safety of the overall structure; the inclined cable and PLC synchronous jacking control system are adopted to ensure that the additional bending moment, deformation and damage to the structural column in the process of correction are small, the force is reasonable, the construction risk is small, and the safety is high; the device is simple, the construction difficulty is small, the operability is strong, and the scope of application is wide, and it is suitable for various structures such as steel structures and reinforced concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0019] Figure 2 This is another structural schematic diagram of the first embodiment of the present utility model.

[0020] Figure 3 It is a structural schematic diagram of the second embodiment of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the third embodiment of the present utility model.

[0022] As shown in the figure:

[0023] Structural column 1, support 2,

[0024] Pushing device 3, reaction frame 3.1, driving mechanism 3.2,

[0025] The inclined cable 4, the polytetrafluoroethylene slide plate 5, the adapter 6, the steel pressure plate 7, and the limit part 8. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the technical solution embodiments of the utility model clearer, the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Embodiment 1, as Figure 1 , Figure 2 The displacement and deviation correction device for a prestressed spatial structure shown in the figure includes a structural column 1 and a support 2 arranged on the structural column 1, and also includes a pushing device 3 and a inclined cable 4 respectively arranged on both sides of the structural column 1. The pushing device 3 includes a driving mechanism 3.2 of the pushing support 2. The pushing device 3 is located on the offset side of the support 2, and the inclined cable 4 connects the ground and the upper part of the structural column 1.

[0028] A displacement correction device for a prestressed spatial structure in the above-mentioned embodiment effectively corrects the prestressed spatial structure through the jacking device 3 and the inclined cable 4 arranged on both sides of the structural column 1, so as to avoid the bearing 2 from causing additional bending moment to the structural column 1, thereby improving the rationality of force and safety of the overall structure. The jacking device 3 is located on the offset side of the bearing 2, and the offset side refers to the direction in which the center of the bearing 2 deviates from the center of the structural column 1, that is, the jacking device 3 is located on the side where the center of the bearing 2 deviates from the center of the structural column 1, and the jacking device 3 and the center of the bearing 2 are located on the same side of the center of the structural column 1; the inclined cable 4 is located on the other side of the offset side of the bearing 2 on the structural column 1, that is, the jacking device 3 and the inclined cable 4 are respectively located on both sides of the structural column 1. The driving mechanism 3.2 pushes the bearing 2 to correct the deviation step by step, so that the center of the bearing 2 is aligned with the center of the top of the structural column 1.

[0029] During the deviation correction process, the push device 3 is subjected to the reaction force transmitted by the driving mechanism 3.2, and a reaction force is generated on the upper part of the structural column 1 in the existing deviation direction (i.e., toward the deviation direction), so that the top of the structural column 1 has a deformation tendency, and the inclined cable 4 is axially pulled to limit the lateral deformation of the structural column 1. The inclined cable 4 is used to ensure that the additional bending moment, deformation and damage to the structural column 1 during the deviation correction process are small, the force is reasonable, the construction risk is small, and the safety is high. The device of this scheme is simple, the construction difficulty is small, the operability is strong, and the application range is wide. It is suitable for various structures such as steel structures and reinforced concrete. It solves the problem that the existing prestressed space structure will cause the bearing 2 to deviate when the prestress is tensioned under the condition of constraint release, and it is easy to cause the roof space structure and the top of the structural column 1 to not coincide with the center and the overall structure to deviate, ranging from more than ten millimeters to tens of millimeters. In addition, there may be certain errors in the performance of the material, the size of the component and the installation position, which will further cause the center of the bearing 2 to be unable to align with the center of the structural column 1, and there will be a large additional bending moment, which is not conducive to the structural force.

[0030] In this embodiment, the jacking device 3 also includes a reaction frame 3.1 arranged on the structural column 1, the reaction frame 3.1 is located on the offset side of the support 2, and the driving mechanism 3.2 is arranged on the reaction frame 3.1. The reaction frame 3.1 can be a corbel reaction frame 3.1, and the corbel reaction frame 3.1 is welded to the upper end side wall of the structural column 1. The corbel reaction frame 3.1 can be made of reinforced concrete or steel structure according to the material of the structural column 1 and the convenience of construction.

[0031] Further, such as Figure 2 As shown, a PTFE slide plate 5 is provided at the upper end of the structural column 1, and the support 2 is located on the PTFE slide plate 5. A PTFE slide plate 5 with a small friction coefficient is laid between the support 2 and the structural column 1 to ensure that the deviation correction can be carried out smoothly.

[0032] Specifically, the driving mechanism 3.2 includes a driving shaft, and the central axis of the driving shaft is horizontally arranged. The driving mechanism 3.2 can adopt a jack, and the central axis of the driving shaft of the jack is horizontally arranged. The thrust generated by the jacking device 3 on the support 2 passes through the center of the support 2 and the center of the structural column 1.

[0033] Further, such as Figure 2 As shown, the structural column 1 is optimized, and a limiting portion 8 is provided on the upper end surface of the structural column 1, and the structural column 1 limits the support 2 on the structural column 1 through the limiting portion 8. The limiting portion 8 limits the support 2, and when the upper end surface of the structural column 1 is provided with a polytetrafluoroethylene slide plate 5, the limiting portion 8 is located on the polytetrafluoroethylene slide plate 5.

[0034] In this embodiment, a PLC control system is also included. There are multiple structural columns 1, and the jacking devices 3 correspond to the structural columns 1 one by one. The PLC control system is connected to the jacking devices 3. A plurality of structural columns 1 and supports 2 are provided in the prestressed spatial structure. The PLC control system is connected to the jacking devices 3 to synchronously push the supports 2, so as to ensure that the additional bending moment, deformation and damage to the structural column 1 during the deviation correction process are small, the force is reasonable, the construction risk is small, and the safety is high.

[0035] The utility model has the following beneficial effects: by means of the jacking device 3 and the inclined cable 4 arranged on both sides of the structural column 1, the prestressed spatial structure is effectively corrected, and the additional bending moment caused by the deviation of the support 2 on the structural column 1 is avoided, thereby improving the rationality of the force and safety of the overall structure; the inclined cable 4 and the PLC synchronous jacking control system are adopted to ensure that the additional bending moment, deformation and damage to the structural column 1 during the correction process are small, the force is reasonable, the construction risk is small, and the safety is high; (3) The device is simple, the construction difficulty is small, the operability is strong, and the application range is wide, and it is suitable for various structures such as steel structures and reinforced concrete.

[0036] Embodiment 2, as Figure 3 The displacement and deviation correction device for a prestressed spatial structure shown in the figure includes a structural column 1 and a support 2 arranged on the structural column 1, and also includes a pushing device 3 and a inclined cable 4 respectively arranged on both sides of the structural column 1. The pushing device 3 includes a driving mechanism 3.2 of the pushing support 2. The pushing device 3 is located on the offset side of the support 2, and the inclined cable 4 connects the ground and the upper part of the structural column 1.

[0037] In this embodiment, Figure 3 As shown, there are multiple inclined cables 4, and multiple inclined cables 4 are located on the opposite side of the offset side of the support 2. There are multiple inclined cables 4 to ensure that the additional bending moment, deformation and damage to the structural column 1 during the correction process are small, the force is reasonable, the construction risk is small, and the safety is high. For example, two inclined cables 4 with different angles are set on the opposite side of the reaction frame 3.1 to balance the horizontal reaction force on the structural column 1 during the correction process and avoid generating a large additional bending moment in the structural column 1. The connection between the inclined cable 4 and the structural column 1 can be welded to the column steel; the connection between the bottom and the floor structure or the ground can be made by embedded parts, pre-embedded short steel beams, etc.

[0038] Specifically, the jacking device 3 also includes a reaction frame 3.1 arranged on the structural column 1, the reaction frame 3.1 is located on the offset side of the support 2, and the driving mechanism 3.2 is arranged on the reaction frame 3.1. The reaction frame 3.1 can be a corbel reaction frame 3.1, and the corbel reaction frame 3.1 is welded to the upper end side wall of the structural column 1. The corbel reaction frame 3.1 can be made of reinforced concrete or steel structure according to the material of the structural column 1 and the convenience of construction.

[0039] Further, such as Figure 2 As shown, a PTFE slide plate 5 is provided at the upper end of the structural column 1, and the support 2 is located on the PTFE slide plate 5. A PTFE slide plate 5 with a small friction coefficient is laid between the support 2 and the structural column 1 to ensure that the deviation correction can be carried out smoothly.

[0040] Specifically, the driving mechanism 3.2 includes a driving shaft, and the central axis of the driving shaft is set horizontally. The driving mechanism 3.2 can use a jack, and the central axis of the driving shaft of the jack is set horizontally. Multiple inclined cables 4 are symmetrically arranged according to the central axis of the driving shaft. It is ensured that the additional bending moment, deformation and damage to the structural column 1 during the correction process are small, the force is reasonable, the construction risk is small, and the safety is high. The thrust generated by the jacking device 3 on the support 2 passes through the center of the support 2 and the center of the structural column 1.

[0041] Further, such as Figure 2 As shown, the structural column 1 is optimized, and a limiting portion 8 is provided on the upper end surface of the structural column 1, and the structural column 1 limits the support 2 on the structural column 1 through the limiting portion 8. The limiting portion 8 limits the support 2, and when the upper end surface of the structural column 1 is provided with a polytetrafluoroethylene slide plate 5, the limiting portion 8 is located on the polytetrafluoroethylene slide plate 5.

[0042] Specifically, it also includes a PLC control system, there are multiple structural columns 1, the jacking devices 3 correspond to the structural columns 1 one by one, and the PLC control system is connected to the jacking devices 3. A plurality of structural columns 1 and supports 2 are provided in the prestressed spatial structure, and the PLC control system is connected to the jacking devices 3 to synchronously push the supports 2, so as to ensure that the additional bending moment, deformation and damage to the structural column 1 during the deviation correction process are small, the force is reasonable, the construction risk is small, and the safety is high.

[0043] Embodiment three, as Figure 4 The displacement and deviation correction device for a prestressed spatial structure shown in the figure includes a structural column 1 and a support 2 arranged on the structural column 1, and also includes a pushing device 3 and a inclined cable 4 respectively arranged on both sides of the structural column 1. The pushing device 3 includes a driving mechanism 3.2 of the pushing support 2. The pushing device 3 is located on the offset side of the support 2, and the inclined cable 4 connects the ground and the upper part of the structural column 1.

[0044] In this embodiment, the driving mechanism 3.2 is connected to the steel pressure plate 7 through the adapter 6, and the steel pressure plate 7 abuts against the side wall of the support 2. The side of the support 2 is a circular arc surface, a plane surface or other different structural surfaces, and the steel pressure plate 7 is adjusted by the adapter 6 of different specifications, so that the steel pressure plate 7 fits the side wall of the support 2, so that the driving mechanism 3.2 is subjected to reasonable force when pushing the support 2, and the damage is small.

[0045] Due to the uncertainty of the cross-sectional shape of the structural column 1, the cross-sectional shape of the support 2 and the correction direction, the correction angle of each support 2 is difficult to predict. In order to ensure that the pushing direction of the jack is perpendicular to the surface of the support 2, there are multiple implementation methods of the adapter 6 of this embodiment. Implementation method one: the adapter 6 has different specifications and is suitable for the correction and pushing angle of each support 2, so that the steel pressure plate 7 fits the side wall of the support 2; Implementation method two: the adapter 6 adopts a magnetic angle adjuster. After the magnetic angle adjuster is installed and fixed, the magnetic function can be remotely started to automatically adjust the angle of the front end steel pressure plate 7 to make it fit with the support 2, and open the mechanical locking device.

[0046] Specifically, the jacking device 3 also includes a reaction frame 3.1 arranged on the structural column 1, the reaction frame 3.1 is located on the offset side of the support 2, and the driving mechanism 3.2 is arranged on the reaction frame 3.1. The reaction frame 3.1 can be a corbel reaction frame 3.1, and the corbel reaction frame 3.1 is welded to the upper end side wall of the structural column 1. The corbel reaction frame 3.1 can be made of reinforced concrete or steel structure according to the material of the structural column 1 and the convenience of construction.

[0047] Furthermore, a polytetrafluoroethylene slide plate 5 is provided at the upper end of the structural column 1, and the support 2 is located on the polytetrafluoroethylene slide plate 5. A polytetrafluoroethylene slide plate 5 with a small friction coefficient is laid between the support 2 and the structural column 1 to ensure that the deviation correction can be carried out smoothly.

[0048] Specifically, the driving mechanism 3.2 includes a driving shaft, and the central axis of the driving shaft is horizontally arranged. The driving mechanism 3.2 can adopt a jack, and the central axis of the driving shaft of the jack is horizontally arranged. The thrust generated by the jacking device 3 on the support 2 passes through the center of the support 2 and the center of the structural column 1.

[0049] Furthermore, a limiting portion 8 is provided on the upper end surface of the structural column 1, and the structural column 1 limits the support 2 on the structural column 1 through the limiting portion 8. The limiting portion 8 limits the support 2, and when the upper end surface of the structural column 1 is provided with a polytetrafluoroethylene slide plate 5, the limiting portion 8 is located on the polytetrafluoroethylene slide plate 5.

[0050] Specifically, it also includes a PLC control system, there are multiple structural columns 1, the jacking devices 3 correspond to the structural columns 1 one by one, and the PLC control system is connected to the jacking devices 3. A plurality of structural columns 1 and supports 2 are provided in the prestressed spatial structure, and the PLC control system is connected to the jacking devices 3 to synchronously push the supports 2, so as to ensure that the additional bending moment, deformation and damage to the structural column 1 during the deviation correction process are small, the force is reasonable, the construction risk is small, and the safety is high.

[0051] Specific implementation process:

[0052] (1) Measure the deviation of the support 2 after tensioning is completed, and determine the angle and displacement of each support 2 for correcting the deviation and pushing;

[0053] (2) Based on the structural model analysis results and the friction coefficient of the sliding material, estimate the required thrust force of each support 2;

[0054] (3) Select a drive mechanism of appropriate specifications based on the estimated thrust force 3.2;

[0055] (4) Based on the estimated thrust angles and thrust forces of each support 2 and the structural plane layout, the angles of the inclined cables 4, the reaction frame 3.1 and the steel bearing plate 7 are reasonably arranged, and the cross-sections of the inclined cables 4 and the reaction frame 3.1 are designed;

[0056] (5) According to the project plane scale and the requirements of jacking control accuracy, the jacking points are grouped and the control lines are reasonably designed;

[0057] (6) Construct each component in turn, install the drive mechanism 3.2 and the PLC control system for synchronous jacking;

[0058] (7) Conduct synchronous test pushes and compare the test push loads at each point with the simulation calculation values ​​to ensure the accuracy of the simulation analysis and optimize the push control scheme based on the test push results.

[0059] The driving mechanism 3.2 is controlled to push the support 2 synchronously through the PLC control system, so that the support 2 moves in the correction direction and the correction is gradually realized. The reaction frame 3.1 is subjected to the reaction force transmitted by the driving mechanism 3.2, and generates a reaction force on the top of the structural column 1 in the direction of the existing deviation. The top of the structural column 1 thus has a deformation tendency, and the inclined cable 4 is axially pulled to limit the lateral deformation of the structural column 1, thereby reducing the horizontal inward force on the top of the structural column 1.

[0060] For example, a professional football stadium project has a total construction area of ​​about 300,000 square meters, a building height of about 60 meters, a north-south long axis span of about 323 meters, and an east-west short axis span of about 267 meters. The structure of this project is mainly composed of spoke cable trusses, steel truss structures, side inclined (arc) columns and ear structures. A total of 36 main steel columns are set along the ring, and steel structure supports 2 are set on them. The construction sequence of the spatial steel structure of this project is: 1. Construction and installation of steel columns. 2. Construction and installation of large-span steel truss structures and nodes on the roof. 3. Installation of fixed cable nets. 4. Release the constraints of support 2. 5. Carry out prestressing tensioning construction according to design requirements. 6. Support 2 is locked.

[0061] The specific embodiments described above are only preferred implementations of the present invention, and are not intended to limit the specific implementation scope of the present invention. All equivalent changes made in accordance with the shape and structure of the present invention should be included in the protection scope of the present invention.

Claims

1. A displacement correction device for a prestressed spatial structure, comprising a structural column and a support arranged on the structural column, characterized in that: It also includes a pushing device and a diagonal cable respectively arranged on both sides of the structural column, the pushing device includes a driving mechanism for pushing the support, the pushing device is located on the offset side of the support, and the diagonal cable connects the ground and the upper part of the structural column.

2. The displacement correction device for a prestressed spatial structure according to claim 1 is characterized in that: The jacking device also includes a reaction frame arranged on the structural column, the reaction frame is located on the offset side of the support, and the driving mechanism is arranged on the reaction frame.

3. A displacement correction device for a prestressed spatial structure according to claim 1 or 2, characterized in that: There are multiple inclined cables, and the multiple inclined cables are located on the side opposite to the offset side of the support.

4. A displacement correction device for a prestressed spatial structure according to claim 1 or 2, characterized in that: A polytetrafluoroethylene slide plate is provided at the upper end of the structural column, and the support is located on the polytetrafluoroethylene slide plate.

5. A displacement correction device for a prestressed spatial structure according to claim 1 or 2, characterized in that: The driving mechanism is connected to a steel pressure-bearing plate via an adapter, and the steel pressure-bearing plate abuts against the side wall of the support.

6. The displacement correction device for a prestressed spatial structure according to claim 3 is characterized in that: The driving mechanism comprises a driving shaft, and the central axis of the driving shaft is arranged horizontally.

7. The displacement correction device for a prestressed spatial structure according to claim 6 is characterized in that: A plurality of inclined cables are symmetrically arranged according to the central axis of the driving shaft.

8. A displacement correction device for a prestressed spatial structure according to claim 1 or 2, characterized in that: The thrust generated by the jacking device on the support passes through the center of the support and the center of the structural column.

9. A displacement correction device for a prestressed spatial structure according to claim 1 or 2, characterized in that: A limiting portion is provided on the upper end surface of the structural column, and the structural column limits the support on the structural column through the limiting portion.

10. A displacement correction device for a prestressed spatial structure according to claim 1 or 2, characterized in that: It also includes a PLC control system. There are multiple structural columns, and the pushing devices correspond to the structural columns one by one. The PLC control system is connected to the pushing devices.

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