Horizontal sliding rotating support used between column end and foundation top face

Abstract

The invention belongs to the technical field of building structures, and discloses a horizontal sliding rotating support used between a column end and a foundation top surface, the horizontal sliding rotating support comprises a base used for being connected with the foundation top surface and a bottom plate used for being connected with the column end, the bottom plate is connected with a sliding block, the base is of a hollow structure, a ball plate is arranged in the base, and the sliding block is movably arranged on the ball plate; a supporting plate is further included, through holes matched with the balls on the ball plate are formed in the supporting plate, and the supporting plate is movably arranged between the ball plate and the sliding block; the driving device comprises a supporting assembly and a lifting assembly; the supporting assembly comprises a steel cable and a tension spring, one end of the steel cable is fixedly connected with the sliding block, and the other end of the steel cable is connected with the tension spring. According to the scheme, the driving device drives the supporting plate to ascend and descend so as to switch the contact state of the bottom face of the sliding block; the sliding support solves the problem that an existing sliding support cannot switch the working contact state between an upper-layer building and a lower-layer building according to working conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of building structures, and in particular relates to a horizontal sliding and rotating support used between a column end and a foundation top surface. Background Art

[0002] Referring to the document with the existing publication (announcement) number CN106245780A, a limited displacement buffer sliding bearing structure and an assembly method are disclosed. In mountain building structures, due to the large differences in stress and deformation between grounding components at different heights, it is usually necessary to arrange a sliding and rotating bearing at the bottom end of the upper grounding column to release the constraints of the horizontal translation and vertical rotation of the bottom of the upper grounding column to adjust the structural stiffness distribution, thereby changing the dynamic characteristics or dynamic response of the overall structure, so as to control the dynamic response and degree of damage of the structure under earthquake action and ensure the safety of the engineering structure.

[0003] Referring to the document with the existing publication (announcement) number CN114182826A, a sliding support and a sliding system applied to a building structure are disclosed, including a lower building structure and an upper building structure spaced apart therefrom, wherein a sliding support is arranged at the interval between the two, and the sliding support includes a building cover plate, a support bottom plate, a buffer belly plate bin, and a smooth sliding plate, a ball plate, a first bearing plate, a second bearing plate and a connecting block arranged inside the buffer belly plate bin; the sliding support also includes a buffer shock absorbing mechanism. The above-mentioned sliding support arranges a ball plate at the interval between the smooth plate and the first bearing plate, so that when the building structure is subjected to external forces, the first bearing plate can slide in any direction in the buffer belly plate bin, thereby ensuring that the friction between the ball plate and the lower building structure is always rolling friction, thereby reducing the friction between the upper building structure and the lower building structure, so that the stress and horizontal displacement caused by the external forces can be better released.

[0004] In building structures, especially when the building is subjected to external forces of earthquakes, the ball bearing plate makes the upper and lower building structures have rolling friction (point contact), reduces the friction resistance between the upper and lower building structures, and allows the upper structure and the ball bearing plate to have a certain degree of freedom of movement to release the horizontal displacement caused by the earthquake, avoids the accumulation of structural stress to reach the damage threshold, and thus reduces the damage caused by earthquake waves to the upper and lower buildings. However, in the absence of external forces, if the superstructure and the ball bearing plate always maintain point contact, compared with surface contact, due to the smaller contact area, stress concentration will be generated at the contact point between the ball bearing and the superstructure, which will cause material fatigue or damage in the long run, thereby destroying the contact surface between the ball bearing and the superstructure. Furthermore, the point contact stability of the ball bearing is not as good as the surface contact, which is easy to cause micro-vibration and displacement of the superstructure, affecting the stability of the superstructure. Moreover, point contact cannot provide enough friction to resist small displacements or non-seismic forces such as wind loads, thus affecting the stability of the building in daily use.

[0005] Therefore, there is an urgent need for a sliding bearing that can achieve point contact between the superstructure and the substructure under earthquake conditions, and surface contact under non-earthquake conditions. Summary of the invention

[0006] The purpose of this solution is to provide a horizontal sliding and rotating support between the column end and the top surface of the foundation to solve the problem that the existing sliding support cannot switch the working contact state between the superstructure and the substructure according to the working conditions.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a horizontal sliding and rotating support between a column end and a foundation top surface, comprising a base for connecting the foundation top surface and a bottom plate for connecting the column end, the bottom plate is connected with a slider, the base is a hollow structure, a ball plate is arranged in the base, the slider is movably arranged on the ball plate, and further comprises: A support plate, wherein the support plate is provided with a through hole matched with the ball on the ball plate, and the support plate is movably arranged between the ball plate and the slider; A driving device is used to drive the lifting and lowering of the supporting plate.

[0008] The principle of this scheme is as follows: (1) By setting a base on the top surface of the foundation, setting a bottom plate on the end of the connecting column, and making the bottom plate slide in the base through a slider, the constraints of the bottom of the upper grounding column in horizontal translation and vertical rotation are released to control the dynamic response and degree of damage of the building structure under earthquake action. (2) When an earthquake occurs, the support plate is driven down by a driving device, so that the balls on the ball plate pass through the through hole, so that the bottom surface of the slider contacts the ball plate (point contact); when the earthquake stops, the support plate is driven up by a driving device, so that the bottom surface of the slider contacts the support plate (surface contact). The lifting and lowering of the support plate driven by the driving device enables the upper building connected to the slider and the lower building connected to the base to switch between point and surface contact under different working conditions.

[0009] The effects of this solution are as follows: (1) Through the support plate and the drive device, the sliding bearing can make the slider and the ball plate contact each other under earthquake conditions, thereby reducing the friction coefficient and providing a certain degree of freedom for the movement of the superstructure, thereby releasing the horizontal displacement caused by the earthquake and reducing the damage to the building caused by earthquake waves. (2) After the earthquake, the support plate is raised to contact the slider surface through the drive device, providing a stable support force, avoiding the problem of stress concentration and material fatigue on the contact surface between the ball and the superstructure due to long-term point contact. At the same time, it also avoids micro-vibration and displacement, enhancing the stability of the building structure.

[0010] Furthermore, the driving device includes a supporting assembly and a lifting assembly; the supporting assembly includes a steel cable and a tension spring, one end of the steel cable is fixedly connected to the slider, the other end is connected to the tension spring, and the other end of the tension spring is connected to the base.

[0011] The principle and effect of this scheme are as follows: (1) Since the support plate is movably arranged in the base, if the support plate rises and contacts the slider, without additional support, the support plate is subjected to the pressure of the superstructure to cause the support plate to drop, and the bottom surface of the slider contacts the ball plate. Therefore, additional support is provided to the support plate by setting a support assembly. (2) In non-earthquake conditions, the tension spring is connected to the slider through a steel cable, and the ground pressure of the slider and the superstructure is dispersed by the tension spring, thereby providing support for the support plate, so that the support plate and the bottom surface of the slider are in surface contact. When an earthquake occurs, the slider will move on the support plate. When the moving distance is too large, the steel cable is pulled and the tension spring is stretched. After the earthquake, the tension spring is reset and the slider is reset by pulling the steel cable.

[0012] Furthermore, the lifting assembly includes a gear and a rack, the gear is meshed with the rack, the gear is rotatably connected to the base, the gear is coaxially connected to a winding roller, the steel cable wraps around the winding roller, and the rack is fixedly connected to the support plate.

[0013] The principle and effect of this scheme are as follows: (1) When an earthquake occurs, if the moving distance of the slider is too large, the steel cable will be pulled to drive the winding roller to rotate, thereby rotating the gear, and the gear drives the rack to move downward to drive the support plate to move downward to the maximum stroke, so that the balls on the ball plate pass through the through holes on the support plate, so that the bottom surface of the slider contacts the balls, and point contact is achieved in the case of an earthquake. (2) When the earthquake stops, the slider is reset to the initial position under the drive of the tension spring reset, and the winding roller retracts the steel cable, so that the gear rotates in the opposite direction to drive the rack to move upward, and then the support plate moves upward to the maximum stroke reset, so that the bottom surface of the slider is away from the ball plate. (3) This scheme uses a mechanical structure to realize the lifting and lowering of the support plate. Compared with electric control or other control methods, it does not rely on power supply. Even if a power outage occurs in an emergency such as an earthquake, the support plate can be lifted and lowered, and the bottom surface of the slider can be contacted with the ball plate. At the same time, the driving device of the mechanical structure is also more stable, durable and has lower cost in the building mechanism.

[0014] Furthermore, the aperture of the through hole is not less than the diameter of the ball, and the thickness of the support plate is less than the radius of the ball.

[0015] The principle and effect of this solution are: through the above arrangement, when the support plate descends to the maximum stroke, the ball can pass through the through hole, and the ball is higher than the top surface of the support plate, so that the bottom surface of the slider contacts the ball.

[0016] Furthermore, it also includes a buffer device arranged in the base, the buffer device is a spring, and one end of the spring is fixedly connected to the inner wall of the base.

[0017] The principle and effect of this solution are: this is a prior art, and the spring arranged in the base provides a buffering and resetting effect on the impact of the slider.

[0018] Furthermore, it also includes a shifting device, which includes a slide plate and a movable rack. There are multiple springs, and one end of each of the multiple springs is arranged on the slide plate. A push rod is provided at the free end of the spring, and the free end of the push rod is connected to the movable rack. There are multiple movable racks, and each of the multiple movable racks is slidably connected to the slide plate. The movable rack is arranged in coordination with the gear.

[0019] The principle and effect of this scheme are as follows: (1) During an earthquake, the slider needs to collide with the spring so that the spring deforms and the elasticity of the spring is used to absorb the impact force caused by the earthquake. If one end of the spring is directly connected to the slider, it cannot absorb and alleviate the impact force caused by the earthquake. Therefore, one end of the spring cannot be directly connected to the slider. However, because one end of the spring is not connected to the slider, the shape of the slider will be deformed after hitting the spring multiple times. After each collision, the spring will be compressed and reset. When the collision frequency and impact are too large, after experiencing periodic elastic deformation, the spring will undergo plastic deformation, that is, it cannot completely recover to its original shape and length after the collision, resulting in permanent compression, which will eventually reduce the elastic force of the spring. Due to the reduced elastic force of the spring, when the slider hits the spring for the second time, the spring's ability to absorb the impact force and reset the slider will also be reduced, resulting in an increase in the displacement of the slider during the second earthquake. Therefore, it is necessary to replace the damaged spring after the earthquake. (2) In this scheme, if the length of the spring becomes smaller, the push rod will push the movable rack and make it mesh with the gear. After an earthquake, the reverse rotation of the gear will drive the movable rack to move upward, so that the slide plate moves upward, driving the damaged spring and the spare spring to move upward, and the spare spring moves to the original position of the damaged spring, thereby replacing the spring. (3) Since the sliding support is already connected between the superstructure and the substructure in the building structure, it is very difficult to replace the spring by disassembling the sliding support. In this solution, the spring is detected by the cooperation of the push rod and the movable rack, and when the spring is detected to be damaged, the movable rack is moved by the upward movement of the post-earthquake support plate, thereby replacing the damaged spring, avoiding the need to disassemble the support to replace the spring. At the same time, the use of the rotation of the gear to drive the movable rack to move also avoids the use of other separate driving devices to drive the movable rack.

[0020] Furthermore, the number of the movable racks and push rods is equal to the number of the springs.

[0021] The principle and effect of this solution is to make the number of push rods, movable racks and springs correspond one to one, so that a single push rod and movable rack can detect and replace a single spring.

[0022] Furthermore, a buffer plate is provided at one end of the spring closest to the slider, and one end of the push rod is fixedly connected to the buffer plate.

[0023] The principle and effect of this solution are as follows: (1) If the slider directly collides with the spring, the spring will deform due to the instantaneous stress concentration. By setting the buffer plate, the force between the slider and the spring is dispersed, so that the spring is evenly stressed. (2) If the push rod is directly set on the free end of the spring, the spring is easily deformed and the push rod does not move in the horizontal direction, resulting in the push rod not pushing the movable rack to the maximum stroke and meshing with the rack, and the damaged spring cannot be replaced. Therefore, by setting the push rod on the buffer plate, the push rod can be moved in the predetermined direction even when the spring is deformed.

[0024] Furthermore, the base is provided with a through slot, the position changing device and the spring can pass through the through slot, and a cover plate is provided at the top of the through slot.

[0025] The principle and effect of this solution is that although there are multiple spare springs, their number is limited. When the slide plate drives the spring to move through the through slot to the maximum stroke, it indicates that the spring is damaged. The spring is pulled out of the base by pulling out the slide plate, and all the springs are removed at one time, so that all the springs can be replaced, and the replaced springs are reinserted into the base through the slide plate.

[0026] Furthermore, the base is provided with a slide groove, a guide rail and a guide groove, the support plate is slidably connected, the rack is slidably arranged in the guide rail, the slide plate is slidably connected to the guide groove, the slide plate is provided with a groove, and the movable rack is slidably connected to the groove.

[0027] The principle and effect of this solution are that the slide groove, guide rail, guide groove and groove respectively provide positioning and guiding functions for the movement of the support plate, rack, slide plate and movable rack to avoid dislocation during their movement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the internal structure of a horizontal sliding and rotating support between a column end and a foundation top surface of the present invention; Figure 2 It is a schematic diagram of the internal structure of the driving device and the transposition device of the present invention; Figure 3 It is a schematic diagram of the internal structure of the movable rack of the present invention after being pushed by the push rod.

[0029] The figure marks in the drawings of the specification include: base top surface 1, base 2, through groove 21, column end 3, bottom plate 4, slider 5, ball plate 6, ball 61, support plate 7, through hole 71, drive device 8, support assembly 81, steel cable 811, tension spring 812, lifting assembly 82, gear 821, rack 822, buffer device 9, spring 91, buffer plate 92, shifting device 10, slide plate 101, movable rack 102, push rod 103. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the concept and technical effects of the present invention in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention: Embodiment 1: See also Figure 1 , a horizontal sliding and rotating bearing used between a column end and a foundation top surface, comprising a base 2 for connecting to a foundation top surface 1 and a bottom plate 4 for connecting to a column end 3, the bottom plate 4 being integrally formed with a slider 5, the slider 5 being a cylindrical thin steel column, the base 2 being a hollow cylinder structure, the slider 5 being slidably arranged in the base 2, a polytetrafluoroethylene coating may be provided on the contact surface between the slider 5 and the base 2 to reduce the friction coefficient between the slider 5 and the base 2. The slider 5 is the weak point of the entire bearing. Stress concentration occurs at the middle variable cross-section of the slider 5, and a chamfer may be provided at the junction of the bottom plate 4 and the slider 5 to optimize the model size. At the same time, when the bearing is in use, strength verification and bolt pull-out verification shall be carried out, and the sliding of the slider 5 under stress shall be ensured. By establishing a similar structure model, the horizontal sliding and torsion constraints of the bottom of the support column can be released, and the axial force, shear force and bending moment of the bottom of the column can be obtained through calculation and analysis; a finite element analysis model of the support is established, and a friction contact surface is set between the slider 5 and the base, and the internal force of the bottom of the column is evenly applied to the bottom plate 4 connected to the bottom of the column to perform transient analysis. The present invention sets a base 2 on the top surface 1 of the foundation, sets a bottom plate 4 on the connecting column end 3, and allows the bottom plate 4 to slide in the base 2 through the slider 5, thereby releasing the constraints of the bottom of the upper grounding column in horizontal translation and vertical rotation, so as to control the dynamic response and degree of damage of the building structure under the action of an earthquake.

[0031] Embodiment 2: See also Figure 1A ball plate 6 is arranged in the base 2, and a slider 5 is movably arranged on the ball plate 6. A support plate 7 is arranged at the bottom of the slider 5. The support plate 7 is provided with a through hole 71 matching with the ball 61 on the ball plate 6. The aperture of the through hole 71 is not less than the diameter of the ball 61. The thickness of the support plate 7 is less than the radius of the ball 61. When the support plate 7 is lowered to the maximum stroke, the ball 61 can pass through the through hole 71, and the ball 61 is higher than the top surface of the support plate 7, so that the bottom surface of the slider 5 is in rolling contact with the ball 61. The support plate 7 is movably arranged between the ball plate 6 and the slider 5. Since the support plate 7 is in a suspended state in non-earthquake conditions, those skilled in the art can add some other supporting structures to reduce the downward pressure of the superstructure on the support plate 7.

[0032] See also Figure 2 The base 2 is also provided with a driving device 8 for driving the support plate to rise and fall, and the driving device 8 includes a supporting assembly 81 and a lifting assembly 82; since the support plate 7 is movably arranged in the base 2, if the support plate 7 rises and contacts the slider 5, without additional support, the support plate 7 is pressed down by the superstructure, and the bottom surface of the slider 5 contacts the ball plate 6. Therefore, the supporting assembly 81 is provided to provide additional support for the support plate 7.

[0033] The support assembly 81 includes a steel cable 811 and a tension spring 812. One end of the steel cable 811 is fixedly connected to the slider 5, and the other end is connected to the tension spring 812. The other end of the tension spring 812 is connected to the base 2. Its working condition is: in non-earthquake conditions, the tension spring 812 is connected to the slider 5 through the steel cable 811, and the ground pressure of the slider 5 and the superstructure is dispersed through the tension spring 812, thereby providing support for the support plate 7, so that the support plate 7 is in surface contact with the bottom surface of the slider 5. When an earthquake occurs, the slider 5 will move on the support plate 7. When the moving distance is too large, the steel cable 811 is pulled and the tension spring 812 is stretched. After the earthquake, the tension spring 812 is reset and the slider 5 is pulled back through the steel cable 811.

[0034] The lifting assembly 82 includes a gear 821 and a rack 822, the gear 821 meshes with the rack 822, the gear 821 is rotatably connected to the base 2, the gear 821 is coaxially connected to a winding roller (not shown in the figure), the steel cable 811 passes around the winding roller, and the rack 822 is fixedly connected to the support plate 7. When an earthquake occurs, after the movement distance of the slider 5 is too large, the steel cable 811 is pulled to drive the winding roller to rotate, thereby rotating the gear 821, and the rack 822 is driven downward by the gear 821 to drive the support plate 7 to move downward to the maximum stroke, thereby causing the ball 61 on the ball plate 6 to pass through the through hole 71 on the support plate 7, so that the bottom surface of the slider 5 contacts the ball 61, and point contact is achieved in the case of an earthquake. When the earthquake stops, the slider 5 is reset to the initial position driven by the tension spring 812, and the winding roller retracts the steel cable 811, so that the gear 821 rotates in the opposite direction to drive the rack 822 to move upward, thereby moving the support plate 7 upward to the maximum stroke and resetting, so that the bottom surface of the slider 5 is away from the ball plate 6.

[0035] Embodiment 3: In the prior art, a buffer device 9, such as a spring 91, is generally provided in the base 2 to provide a buffer and reset function for the impact of the slider 5. However, during an earthquake, the slider 5 needs to collide with the spring 91 so that the spring 91 is deformed, and the elasticity of the spring 91 is used to absorb the impact force caused by the earthquake. However, if one end of the spring 91 is directly connected to the slider 5, the impact force caused by the earthquake cannot be absorbed and alleviated under the action of the earthquake. Therefore, one end of the spring 91 cannot be directly connected to the slider 5. However, because one end of the spring 91 is not connected to the slider 5, the shape of the slider 5 will be deformed after it hits the spring 91 many times. After each impact, the spring 91 will be compressed and reset. When the impact frequency and impact are too large, after experiencing periodic elastic deformation, the spring 91 will undergo plastic deformation, that is, it cannot be completely restored to its original shape and length after the impact, resulting in permanent compression, which will eventually reduce the elastic force of the spring 91. Since the elastic force of the spring 91 is reduced, when the slider 5 hits the spring 91 for the second time, the ability of the spring 91 to absorb the impact force and reset the slider 5 is also reduced, resulting in an increase in the displacement of the slider 5 during the second earthquake. Therefore, in this embodiment, the damaged spring 91 is replaced after the earthquake.

[0036] See also Figure 2 and Figure 3A transposition device 10 is also provided in the base 2. The transposition device 10 includes a slide plate 101 and a movable rack 102. There are four springs 91, only one of which is used to buffer the collision of the slider 5 at a time, and the other three are spare springs 91. More transposition devices 10 and springs 91 can be added according to actual engineering needs. One end of the four springs 91 is provided on the slide plate 101, and a push rod 103 is provided at the free end of the spring 91. The free end of the push rod 103 is connected to the movable rack 102. The number of movable racks 102 matches the number of springs 91, and the movable racks 102 are all slidably connected to the slide plate 101. The movable racks 102 are arranged in cooperation with the gear 821. When the length of the spring 91 becomes smaller, the push rod 103 will push the movable rack 102 and make it mesh with the gear 821 (such as Figure 3 After an earthquake, the gear 821 rotates in the opposite direction to drive the movable rack 102 to move upward, so that the slide plate 101 moves upward to drive the damaged spring 91 and the spare spring 91 to move upward, and the spare spring 91 moves to the original position of the damaged spring 91, so that the spring 91 can be replaced.

[0037] The end of the spring 91 closest to the slider 5 is provided with a buffer plate 92, and one end of the push rod 103 is fixedly connected to the buffer plate 92. If the slider 5 directly collides with the spring 91, the spring 91 will be deformed due to the instantaneous stress concentration. The buffer plate 92 is provided to disperse the force between the slider 5 and the spring 91, so that the spring 91 is evenly stressed. At the same time, if the push rod 103 is directly provided on the free end of the spring 91, the spring 91 is easily deformed and the push rod 103 does not move in the horizontal direction, so that the push rod 103 does not push the movable rack 102 to the maximum stroke and mesh with the rack 822, and the damaged spring 91 cannot be replaced. Therefore, the push rod 103 is provided on the buffer plate 92, so that the push rod 103 can be moved in a predetermined direction even when the spring 91 is deformed.

[0038] Although there are multiple spare springs 91, their number is limited. A through slot 21 is provided in the base 1, so that the transposition device 10 and the spring 91 can pass through the through slot 21. A cover plate (not shown in the figure) is provided at the top of the through slot 21. When the slide 101 drives the spring 91 to pass through the through slot 21 and move to the maximum stroke, it indicates that the spring 21 has been damaged. The spring 91 is pulled out of the base 2 by pulling out the slide 101, and all the springs 91 are removed at one time, so that all the springs 91 are replaced, and the replaced springs 91 are reinserted into the base 2 through the slide 101.

[0039] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A horizontal sliding and rotating support for use between a column end and a foundation top surface, comprising a base (2) for connecting to a foundation top surface (1) and a bottom plate (4) for connecting to a column end (3), wherein the bottom plate (4) is connected to a slider (5), the base (2) is a hollow structure, a ball bearing plate (6) is provided in the base (2), and the slider (5) is movably provided on the ball bearing plate (6), characterized in that: Also includes: A support plate (7), the support plate (7) being provided with a through hole (71) that matches with the ball (61) on the ball plate (6), and the support plate (7) being movably disposed between the ball plate (6) and the slider (5); A driving device (8), wherein the driving device (8) is used to drive the lifting and lowering of the supporting plate (7).

2. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 1, characterized in that: The driving device (8) comprises a supporting assembly (81) and a lifting assembly (82); the supporting assembly (81) comprises a steel cable (811) and a tension spring (812); one end of the steel cable (811) is fixedly connected to the slider (5), and the other end is connected to the tension spring (812); the other end of the tension spring (812) is connected to the base (2).

3. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 2, characterized in that: The lifting assembly (82) comprises a gear (821) and a rack (822), the gear (821) meshing with the rack (822), the gear (821) being rotatably connected to the base (2), the gear (821) being coaxially connected to a winding roller, the steel cable (811) passing around the winding roller, and the rack (822) being fixedly connected to the support plate (7).

4. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 1, characterized in that: The aperture of the through hole (71) is not less than the diameter of the ball (61), and the thickness of the support plate (7) is less than the radius of the ball (61).

5. The horizontal sliding and rotating support between the column end and the top surface of the foundation according to claim 1, characterized in that: It also includes a buffer device (9) disposed in the base (2), wherein the buffer device (9) is a spring (91), and one end of the spring (91) is fixedly connected to the inner wall of the base (2).

6. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 5, characterized in that: The invention also comprises a transposition device (10), wherein the transposition device (10) comprises a slide plate (101) and a movable rack (102), wherein the number of the springs (91) is plural, and one end of each of the plurality of springs (91) is disposed on the slide plate (101), a push rod (103) is disposed at the free end of each spring (91), and the free end of each push rod (103) is connected to the movable rack (102), wherein the number of the movable racks (102) is plural, and each of the plurality of movable racks (102) is slidably connected to the slide plate (101), and the movable rack (102) is arranged in cooperation with the gear (821).

7. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 6, characterized in that: The number of the movable racks (102) and push rods (103) is equal to the number of the springs (91).

8. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 6, characterized in that: A buffer plate (92) is provided at the end of the spring (91) closest to the slider (5), and one end of the push rod (103) is fixedly connected to the buffer plate (92).

9. A horizontal sliding and rotating support for use between a column end and a foundation top surface according to claim 6, characterized in that: The base (1) is provided with a through slot (21), the position changing device (10) and the spring (91) can pass through the through slot (21), and a cover plate is provided at the top end of the through slot (21).

10. A horizontal sliding and rotating support between a column end and a foundation top surface according to claim 6, characterized in that: The base (2) is provided with a slide groove, a guide rail and a guide groove, the support plate (7) is slidably connected thereto, the rack (822) is slidably arranged in the guide rail, the slide plate (101) is slidably connected to the guide groove, the slide plate (101) is provided with a groove, and the movable rack (102) is slidably connected to the groove.

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