An assembled building body with earthquake-resistant recovery performance

Abstract

This application relates to a prefabricated building body with seismic recovery performance, belonging to the technical field of prefabricated buildings. It includes a foundation and a superstructure. The superstructure is located on the foundation, and an air suspension device is arranged between the foundation and the superstructure. The air suspension device includes an air compressor, an airbag, and a jacking cylinder. The air compressor is internally connected to the airbag and is used to send air into the airbag for the top of the airbag to abut against the bottom surface of the superstructure. The bottom of the airbag is fixedly connected to the top surface of the foundation. One end of the jacking cylinder body is embedded and fixed at the bottom of the superstructure, and one end of the piston rod of the jacking cylinder penetrates through the airbag and abuts against the top surface of the foundation. A plurality of jacking cylinders are arranged, and adjacent jacking cylinders are spaced apart on the bottom surface of the superstructure to stably lift or lower the superstructure relative to the foundation. A sensor for monitoring vibration and controlling whether the air suspension device works is arranged inside the superstructure. This application has the effect of improving the stability of the building when floating or falling back.

Description

Technical Field

[0001] This application relates to the technical field of prefabricated buildings, and particularly to a prefabricated building body with seismic recovery performance. Background Art

[0002] Currently, for the sake of stability, there are foundations beneath the ground surface and basements built on the foundations for buildings. However, the integrated structure of the foundation and the surface building is not ideal in terms of earthquake resistance. When a powerful enough earthquake occurs, the deformation caused by the squeezing and vibration of the foundation is sufficient to bring catastrophic damage to the building above the ground surface.

[0003] There is a current air suspension structure that separates the surface building from the foundation. When an earthquake strikes, the strong shaking of the foundation will have a greatly reduced impact on the surface building.

[0004] The air suspension structure refers to using compressed air to suspend the structure. Similar to the maglev train, air suspension technology has also been applied to the train system very early. France is the first country in the world to build an air-cushion train. In the 1960s, two air suspension railways were built outside Paris and Orleans, and the test speed of the train was 200 to 422 kilometers per hour.

[0005] After the Great East Japan Earthquake in 2011, the air suspension isolation structure was developed and applied to practical projects in Japan in 2012 (currently, 88 families have adopted it). The entire system consists of sensors, air compression devices, and house foundation devices. When the sensors detect an earthquake approaching, the air suspension device can lift the structure by about 3 cm in height until the vibration disappears and then the structure returns to its original position. The air compression device usually adopts an air compressor and an airbag.

[0006] Regarding the above-mentioned suspension structure, the inventor believes that when the airbag is inflated or deflated, the area of the airbag near the air inlet or outlet changes the fastest, and the overall airbag will have an uneven undulating state, resulting in the house above the airbag tilting and shaking, and there are defects in the instability of the building when floating or falling back. Summary of the Invention

[0007] In order to improve the stability of the building when floating or falling back, this application provides a prefabricated building body with seismic recovery performance.

[0008] The prefabricated building body with seismic recovery performance provided by this application adopts the following technical solutions:

[0009] An assembled building body with seismic recovery performance, comprising a foundation and a superstructure. The superstructure is located on the foundation, and an air suspension device is arranged between the foundation and the superstructure. The air suspension device includes an air compressor, an airbag and a jacking cylinder. The air compressor is internally connected to the airbag for supplying air into the airbag, so that the top of the airbag abuts against the bottom surface of the superstructure. The bottom of the airbag is fixedly connected to the top surface of the foundation. One end of the jacking cylinder body is embedded and fixed at the bottom of the superstructure, and one end of the piston rod of the jacking cylinder penetrates through the airbag and abuts against the top surface of the foundation. A plurality of jacking cylinders are arranged, and adjacent jacking cylinders are spaced apart on the bottom surface of the superstructure for stably lifting or lowering the superstructure relative to the foundation. A sensor for monitoring vibration and controlling whether the air suspension device works is arranged inside the superstructure.

[0010] By adopting the above technical solution, when the sensor detects an earthquake approaching, the jacking cylinder starts to work first, jacking up the superstructure to leave enough space for inflating the airbag. Then the air compressor inflates the inside of the airbag. After the top of the airbag abuts against the bottom surface of the superstructure, the piston rod of the jacking cylinder retracts. At this time, the whole superstructure stably descends and finally tends to be stable. Similarly, when the sensor senses that the earthquake has left, all the jacking cylinders first support the superstructure above the foundation, and then the air compressor deflates the inside of the airbag. After the deflation is completed, the piston rods of all the jacking cylinders stably retract as a whole, ensuring that the superstructure is stably located on the foundation, achieving the effect of improving the stability of the building when floating up or falling back.

[0011] Optionally, a storage groove is provided on the foundation, and the superstructure is located in the storage groove, and there is a distance between the superstructure and the vertical groove wall of the storage groove. A limiting cylinder and a first spring are arranged on the vertical outer wall of the superstructure. The limiting cylinder is fixedly connected to the superstructure, and one end of the piston rod of the limiting cylinder abuts against the groove wall of the storage groove. The first spring is sleeved on the limiting cylinder, one end of the first spring is fixedly connected to the superstructure, and the other end has a distance from the groove wall of the storage groove.

[0012] By adopting the above technical solution, the opening of the storage groove enables the superstructure to be stably located on the foundation. When the earthquake is strong, the storage groove plays a role in limiting the shaking of the superstructure. After the superstructure shakes, the first spring plays a role in buffering and resisting the shaking of the superstructure, and at the same time, in cooperation with the limiting cylinder, it avoids the possibility of the superstructure shaking back and forth, that is, the piston rod of the limiting cylinder abuts against the groove wall of the storage groove after the first spring is compressed to a certain extent. When the earthquake does not come, the piston rod of the limiting rod abuts against the groove wall of the storage groove to ensure the stability of the superstructure after it is located on the foundation.

[0013] Optionally, a guide cap is fixed to the end of the piston rod of the lifting cylinder, and the ends of the guide cap close to and away from the airbag are chamfered. A positioning groove is provided on the top surface of the base. The guide cap passes through the airbag and is inserted into the positioning groove. The end of the guide cap close to the base is tightly in contact with the inner wall of the positioning groove.

[0014] By adopting the above technical solution, the setting of the guide cap makes it easier for the end of the piston rod of the jacking cylinder to pass through the airbag, thereby avoiding the involvement of the airbag during the extension and retraction of the piston cylinder of the jacking cylinder; and the opening of the positioning groove increases the contact area between the guide cap and the foundation, ensuring that the jacking cylinder can stably lift the superstructure.

[0015] Optionally, a support assembly is provided on the foundation, and the support assembly is staggered with the lifting cylinder; the support assembly includes a support seat, a support rod and a magnet, one end of the support seat is embedded and fixed on the foundation, the support rod is inserted into the support seat, the support rod slides in a vertical direction relative to the support seat and does not separate from the support seat, the support rod is vertically arranged and passes through the airbag, the magnet is fixed on the top of the support rod, and the magnet is magnetically adsorbed to the bottom of the superstructure.

[0016] By adopting the above technical scheme, the support assembly and the lifting cylinder are staggered, which makes up for the support of the superstructure between adjacent lifting cylinders. When the superstructure is seated on the foundation, the support assembly supports the bottom of the superstructure, avoiding bending deformation of the bottom of the superstructure. Due to the setting of the magnet, after the superstructure is lifted up, the support rod follows the superstructure for a distance and then separates from the superstructure. When the superstructure falls back, once it reaches the magnetic adsorption distance, the magnet will drive the support rod to penetrate the airbag and the magnetic adsorption of the bottom of the superstructure, avoiding the phenomenon of the support rod and the superstructure squeezing the airbag.

[0017] Optionally, a positioning ring is provided on the airbag, and the positioning ring is distributed at the place where the airbag is penetrated by the support rod. Multiple traction ropes are provided between the positioning ring and the support rod. One end of the traction rope is fixedly connected to the positioning ring, and the other end passes through the support seat and is fixedly connected to the support rod. All traction ropes are symmetrically distributed on the support rod; when the magnet is just adsorbed to the superstructure, the area of ​​the traction rope close to the support rod is pulled into the support seat by the support rod.

[0018] By adopting the above technical solution, the presence of the positioning ring makes it easier for the support rod to penetrate the airbag better. When the airbag is deflated, in order to avoid the airbag being clamped between the end of the support rod and the superstructure, the positioning ring is pulled away from the support rod through the traction rope, thereby preventing the end of the support rod and the superstructure from squeezing the airbag.

[0019] Optionally, a pad is provided on the foundation, the pad is located at the bottom of the storage groove and is arranged along the outer circle of the bottom of the groove, the bottom of the superstructure is in contact with the pad, and the airbag is located inside the pad; after the airbag is inflated, there is a groove on the top surface, and a boss is fixed at the bottom of the superstructure, and the boss is wrapped by the groove; the magnet is adsorbed on the boss.

[0020] By adopting the above technical solution, the setting of the cushion table enables the superstructure to completely release the lifting cylinder when sitting on the foundation, without the need to continuously support the superstructure through the lifting cylinder, thus prolonging the service life of the lifting cylinder; the existence of the groove and the convex platform can prevent the superstructure from slipping relative to the airbag when the airbag is inflated.

[0021] Optionally, a shielding assembly is provided on the foundation. The shielding assembly includes a swing rod, a shielding plate and a second spring. A swing groove is formed on the vertical groove wall of the receiving groove. The swing groove is formed vertically and penetrates through the top of the foundation. Both the swing rod and the second spring are located in the swing groove. The swing rod is rotatably connected to the foundation, and the rotation axis is horizontally arranged. The shielding plate is fixedly connected to the top of the swing rod. The shielding plate swings in the direction close to or away from the superstructure. The second spring is located at the bottom of the swing rod and on the side of the swing rod away from the airbag. One end of the second spring is fixedly connected to the swing rod, and the other end is fixedly connected to the swing groove. When the airbag is in the non-inflated state, the second spring is distributed opposite to the limiting cylinder.

[0022] By adopting the above technical solution, the existence of the shielding assembly makes full use of the limiting cylinder, enabling the piston rod of the limiting cylinder to push one end of the swing rod to swing. Through the swing rod, the shielding plate can be controlled to move in the direction close to or away from the superstructure, thereby shielding or not shielding the gap between the superstructure and the foundation. When not shielding, sufficient shaking space is left for the shaking of the superstructure, avoiding direct contact with the foundation to form a rigid connection state.

[0023] Optionally, the shielding plate includes a first arc plate and a second arc plate. The fixed part of the swing rod and the shielding plate is located at the junction of the first arc plate and the second arc plate. The first arc plate is located close to the superstructure of the swing rod, and the arc concave surface of the first arc plate faces upward. The arc concave surface of the second arc plate faces downward.

[0024] By adopting the above technical solution, the existence of the first arc plate and the second arc plate makes the shielding plate in a wavy shape, thus preventing foreign objects from falling into the gap between the superstructure and the foundation.

[0025] Optionally, an insertion groove is formed on the support seat. The bottom end of the support rod is located in the insertion groove. The support seat is provided with a third spring. One end of the third spring is fixedly connected to the bottom of the support rod, and the other end is fixedly connected to the bottom of the insertion groove. When the airbag is fully inflated, the third spring is in a compressed state.

[0026] By adopting the above technical solution, after the airbag deflates, the resilience of the third spring makes the support rod slide upward, penetrating the airbag more quickly, enabling the magnet to adsorb the convex platform more quickly, and further preventing the phenomenon that the airbag is clamped between the top of the support rod and the convex platform.

[0027] Optionally, a guiding bead is rotatably connected to the support rod, a wire releasing groove is formed on the groove wall of the insertion groove, the wire releasing groove is formed in the vertical direction, the guiding bead is located in the wire releasing groove, the traction rope passes through the support base and is located in the guiding groove, and the fixing portion of the traction rope and the support rod is located below the guiding bead.

[0028] By adopting the above technical solution, the presence of the guiding bead reduces the friction between the support rod and the support base, making the sliding of the support rod relative to the support base smoother; the presence of the guiding bead can prevent foreign objects from falling into the wire releasing groove, and the wire releasing groove provides a separate sliding space for the traction rope to slide into the support base.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The setting of the air suspension device can ensure that the superstructure is stably lifted off the foundation or located on the foundation when an earthquake occurs or after it, achieving the effect of improving the stability of the building when floating up or falling back.

[0031] 2. The support assembly can make up for the lack of support force of the superstructure between adjacent lifting cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0033] Figure 2 is the structural sectional view at the lifting cylinder;

[0034] Figure 3 is the schematic diagram of the position where the airbag is penetrated by the lifting cylinder and the support rod;

[0035] Figure 4 is the simplified sectional view of the support assembly;

[0036] Figure 5 Internal structural sectional view of the support assembly;

[0037] Figure 6 is the structural sectional view at the shielding assembly.

[0038] In the figure, 1, foundation; 11, storage groove; 111, swing groove; 12, limiting cylinder; 13, first spring; 14, positioning groove; 15, cushion table; 16, boss; 2, superstructure; 21, sensor; 3, air suspension device; 31, air compressor; 32, airbag; 321, positioning ring; 322, groove; 33, lifting cylinder; 331, guiding cap; 4, support assembly; 41, support base; 42, support rod; 43, magnet; 5, traction rope; 6, shielding assembly; 61, swing rod; 62, shielding plate; 621, first arc plate; 622, second arc plate; 63, second spring; 7, insertion groove; 71, wire releasing groove; 72, third spring; 73, guiding bead. Detailed implementation mode

[0039] The following will further elaborate on this application in conjunction with the Figure 1-6 accompanying drawings.

[0040] An embodiment of this application discloses a prefabricated building body with earthquake-resistant recovery performance.

[0041] Referring to Figure 1 , a prefabricated building body with earthquake-resistant recovery performance includes a foundation 1 and a superstructure 2. The superstructure 2 is located on the foundation 1. A sensor 21 is provided on the superstructure 2. An air suspension device 3 is provided between the superstructure 2 and the foundation 1. The sensor 21 senses whether an earthquake occurs. When an earthquake occurs, the air suspension device 3 is activated. The air suspension device 3 lifts the superstructure 2 from the foundation 1, forming a soft connection between the superstructure 2 and the foundation 1, thereby reducing the impact of the earthquake on the superstructure 2.

[0042] Referring to Figure 2 and Figure 3 , a receiving groove 11 is formed on the foundation 1, and the superstructure 2 is located in the receiving groove 11. The air suspension device 3 includes an air compressor 31, an airbag 32, and a jacking cylinder 33. The air compressor 31 is fixedly embedded in the superstructure 2. The bottom of the airbag 32 is fixedly connected to the top surface of the foundation 1. The air compressor 31 is internally connected to the airbag 32. The air compressor 31 inflates or deflates the inside of the airbag 32. The jacking cylinder 33 can be a hydraulic cylinder or a pneumatic cylinder. One end of the body of the jacking cylinder 33 is fixedly embedded in the bottom of the superstructure 2. A boss 16 is fixed to the bottom of the superstructure 2. The circumferential side wall of the boss 16 is stepped. After the airbag 32 is filled with air, a groove 322 will appear on the top of the airbag 32. The boss 16 is inserted into the groove 322, and the airbag 32 wraps the boss 16. The setting of the airbag 32 makes the superstructure 2 suspended on the foundation 1. When an earthquake comes, the presence of the airbag 32 will greatly reduce the impact of the vibration of the foundation 1 on the superstructure 2.

[0043] Referring to Figure 2 and Figure 3 , one end of the piston rod of the jacking cylinder 33 penetrates through the airbag 32. A guide cap 331 is fixed to one end of the piston rod of the jacking cylinder 33. The ends of the guide cap 331 near and far from the piston rod of the jacking cylinder 33 are chamfered. In this embodiment, the guide cap 331 is elliptical. The guide cap 331 enables the piston rod of the jacking cylinder 33 to penetrate through the airbag 32 more smoothly, avoiding entrainment of the airbag 32. A positioning groove 14 is formed on the foundation 1. The positioning groove 14 is located at the bottom of the receiving groove 11. The positioning groove 14 corresponds to the position where the guide cap 331 falls. The end of the guide cap 331 far from the jacking cylinder 33 is inserted into the positioning groove 14.

[0044] Referring to Figure 2 andFigure 3 There are multiple lifting cylinders 33, and in this embodiment, four are provided and are distributed at the four corners of the bottom surface of the superstructure 2. A support assembly 4 is also provided between the superstructure 2 and the foundation 1. The support assembly 4 is arranged in a staggered manner with the lifting cylinders 33, so as to make up for the lack of support force of the superstructure 2 between adjacent lifting cylinders 33. In this embodiment, four groups of support assemblies 4 are provided and are distributed in a rectangular array.

[0045] Reference Figure 4 and Figure 5 The support assembly 4 includes a support base 41, a support rod 42 and a magnet 43. One end of the support base 41 is embedded and fixed on the foundation 1, and the other end is located outside the foundation 1. The support base 41 is vertically arranged. An insertion groove 7 is opened at the top of the support base 41. The support rod 42 is located in the insertion groove 7. The support rod 42 is slidably arranged relative to the support base 41 in the vertical direction. The magnet 43 is fixed at the top of the support rod 42. A third spring 72 is fixed at the bottom of the support rod 42. One end of the third spring 72 away from the support rod 42 is fixedly connected to the bottom of the insertion groove 7. The support rod 42 penetrates through the airbag 32; a positioning ring 321 is arranged on the airbag 32. The positioning ring 321 is located at the place where the support rod 42 penetrates through the airbag 32. A traction rope 5 is arranged between the positioning ring 321 and the support rod 42. One end of the traction rope 5 is fixedly connected to the positioning ring 321, and the other end penetrates through the support base 41 and is fixedly connected to the support rod 42. A wire groove 71 is opened on the inner wall of the insertion groove 7. The wire groove 71 is vertically opened and penetrates through the top of the support base 41. The traction rope 5 at the place where it penetrates through the support base 41 is located in the wire groove 71, and the traction rope 5 pulled into the support base 41 by the support rod 42 is stored in the wire groove 71.

[0046] Reference Figure 4 and Figure 5 A guiding bead 73 is rotatably connected to the support rod 42. The guiding bead 73 is located in the wire groove 71. Multiple traction ropes 5 are arranged on a single support rod 42 and are symmetrically distributed on the support rod 42. The place where the traction rope 5 is fixedly connected to the support rod 42 is located below the guiding bead 73. When the airbag 32 is in a fully inflated state, the third spring 72 is in a compressed state. At this time, there is a distance between the magnet 43 and the convex platform 16. The airbag 32 lifts the superstructure 2. When the airbag 32 deflates, the third spring 72 rebounds. The third spring 72 pushes the support rod 42 to move upward. While the support rod 42 moves upward, it pulls the traction rope 5 and pulls the positioning ring 321 in a direction away from the support rod 42, so as to facilitate the support rod 42 to penetrate through the airbag 32. Finally, the magnet 43 is magnetically adsorbed and fixed to the convex platform 16. Then, the superstructure 2 continues to press down. Finally, the third spring 72 is compressed to the limit state, and the support rod 42 plays a supporting effect on the superstructure 2.

[0047] Reference Figure 6A pad 15 is fixed on the foundation 1, and the pad 15 is located on the bottom of the storage groove 11. The pad 15 is arranged around the periphery of the bottom of the storage groove 11, and the airbag 32 is located inside the range surrounded by the pad 15. When the superstructure 2 is completely seated on the foundation 1, the bottom of the superstructure 2 abuts against the top of the pad 15. At this time, the support assembly 4 supports the superstructure 2.

[0048] refer to Figure 6 A limit cylinder 12 and a first spring 13 are provided on the outer wall of the superstructure 2. The limit cylinder 12 can be a pneumatic cylinder or a hydraulic cylinder. One end of the limit cylinder 12 body is embedded and fixed on the outer wall of the superstructure 2. The first spring 13 is sleeved on the outside of the piston rod of the limit cylinder 12. One end of the first spring 13 is fixedly connected to the outer wall of the superstructure 2, and the other end abuts against the vertical groove wall of the receiving groove 11. When the first spring 13 is in a natural state, there is a distance between the end of the first spring 13 away from the limit cylinder 12 and the groove wall of the receiving groove 11.

[0049] refer to Figure 6 A swing groove 111 is provided on the groove wall of the storage groove 11. The swing groove 111 is provided in the vertical direction and penetrates the top of the foundation 1. The storage groove 11 is arranged opposite to the limit cylinder 12. A shielding component 6 is provided on the foundation 1. The shielding component 6 includes a shielding plate 62, a swing rod 61 and a second spring 63. The swing rod 61 and the second spring 63 are both located in the swing groove 111. The swing rod 61 is rotatably set in the swing groove 111, and the rotation axis is horizontally set. The second spring 63 is located at the bottom of the groove near the swing groove 111. The second spring 63 is horizontally set. One end of the second spring 63 is fixedly connected to the swing rod 61, and the other end is fixedly connected to the groove wall of the swing groove 111. The second spring 63 is located on the side of the swing rod 61 away from the limit cylinder 12 ; The shielding plate 62 is fixedly connected to the top of the swing rod 61, and the shielding plate 62 includes a first arc plate 621 and a second arc plate 622. The first arc plate 621 and the second arc plate 622 are both arc-shaped plates. The swing rod 61 and the shielding plate 62 are fixed at the junction of the first arc plate 621 and the second arc plate 622. The first arc plate 621 is located at the swing rod 61 close to the superstructure 2, and the arc concave surface of the first arc plate 621 itself is set upward, and the arc concave surface of the second arc plate 622 itself is set downward; the piston rod of the limit cylinder 12 pushes the lower end of the swing rod 61, and the second spring 63 is compressed at this time, and the upper end of the swing rod 61 moves toward the superstructure 2, so that the first arc plate 621 blocks the gap between the superstructure 2 and the foundation 1.

[0050] In this embodiment, the sensor 21 adopts the most conventional sensor 21, which can sense the information of earthquake vibration and transform the sensed information into electrical signals or other required forms of information output according to a certain rule to control the opening or closing of the air suspension device 3 and the limit cylinder 12.

[0051] The implementation principle of an assembled building with seismic recovery performance in an embodiment of the present application is as follows: when the sensor 21 detects that an earthquake is coming, the shielding assembly 6 is started to make the shielding plate 62 away from the superstructure 2, the piston rod of the limit cylinder 12 is recovered, and the jacking cylinder 33 is started to work to lift the superstructure 2 upward to leave enough space for the inflation of the airbag 32, and then the air compressor 31 inflates the inside of the airbag 32. When the top of the airbag 32 abuts against the bottom surface of the superstructure 2, the piston rod of the jacking cylinder 33 retracts again. At this time, the superstructure 2 falls stably as a whole and eventually tends to be stable. Similarly, when the sensor 21 senses that the earthquake has left, all the jacking cylinders 33 first support the superstructure 2 above the foundation 1, and then the air compressor 31 deflates the inside of the airbag 32. After the deflation is completed, the piston rods of all the jacking cylinders 33 retract stably as a whole to ensure that the superstructure 2 is stably located on the foundation 1, thereby achieving the effect of improving the stability of the building when floating or falling.

[0052] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled building body with earthquake-resistant recovery performance, characterized in that: It includes a foundation (1) and a superstructure (2). The superstructure (2) is located on the foundation (1), and an air suspension device (3) is arranged between the foundation (1) and the superstructure (2); the air suspension device (3) includes an air compressor (31), an airbag (32) and a lifting cylinder (33). The air compressor (31) is internally connected to the airbag (32) for supplying air into the airbag (32) so that the top of the airbag (32) abuts against the bottom surface of the superstructure (2); the bottom of the airbag (32) is fixedly connected to the top surface of the foundation (1); one end of the body of the lifting cylinder (33) is embedded and fixed at the bottom of the superstructure (2), and one end of the piston rod of the lifting cylinder (33) penetrates through the airbag (32) and then abuts against the top surface of the foundation (1); a plurality of lifting cylinders (33) are provided, and adjacent lifting cylinders (33) are spaced apart and distributed on the bottom surface of the superstructure (2) for stably lifting or lowering the superstructure (2) relative to the foundation (1); a sensor (21) for monitoring vibration and controlling whether the air suspension device (3) works is arranged inside the superstructure (2).

2. The prefabricated building body with earthquake resistance and recovery performance according to claim 1, wherein: A storage groove (11) is formed in the foundation (1), and the superstructure (2) is located in the storage groove (11), and a distance is left between the superstructure (2) and the vertical groove wall of the storage groove (11); a limiting cylinder (12) and a first spring (13) are arranged on the vertical outer wall of the superstructure (2). The limiting cylinder (12) is fixedly connected to the superstructure (2), and one end of the piston rod of the limiting cylinder (12) abuts against the groove wall of the storage groove (11); the first spring (13) is sleeved on the limiting cylinder (12), one end of the first spring (13) is fixedly connected to the superstructure (2), and a distance is left between the other end and the groove wall of the storage groove (11).

3. A prefabricated building body with earthquake resistance and recovery performance according to claim 1, characterized in that: A guiding cap (331) is fixed at the end of the piston rod of the lifting cylinder (33). Both ends of the guiding cap (331) close to and away from the airbag (32) are chamfered. A positioning groove (14) is formed in the top surface of the foundation (1). After the guiding cap (331) penetrates through the airbag (32), it is inserted into the positioning groove (14), and one end of the guiding cap (331) close to the foundation (1) is in close contact with the inner wall of the positioning groove (14).

4. A prefabricated building body with earthquake resistance and recovery performance according to claim 1, characterized in that: A supporting assembly (4) is arranged on the foundation (1), and the supporting assembly (4) and the lifting cylinder (33) are distributed in a staggered manner; the supporting assembly (4) includes a supporting seat (41), a supporting rod (42) and a magnet (43). One end of the supporting seat (41) is embedded and fixed in the foundation (1), the supporting rod (42) is inserted into the supporting seat (41), the supporting rod (42) slides relative to the supporting seat (41) in the vertical direction and does not break away from the supporting seat (41), the supporting rod (42) is vertically arranged and penetrates through the airbag (32), and the magnet (43) is fixed at the top end of the supporting rod (42), and the magnet (43) is magnetically adsorbed to the bottom of the superstructure (2).

5. A prefabricated building body with earthquake resistance and recovery performance according to claim 4, characterized in that: A positioning ring (321) is provided on the airbag (32). The positioning rings (321) are distributed at the positions where the airbag (32) is penetrated by the support rods (42). A plurality of traction ropes (5) are arranged between the positioning rings (321) and the support rods (42). One end of each traction rope (5) is fixedly connected to the positioning ring (321), and the other end penetrates through the support base (41) and is fixedly connected to the support rod (42). All the traction ropes (5) are symmetrically distributed on the support rod (42). When the magnet (43) is just adsorbed to the superstructure (2), the area of the traction rope (5) close to the support rod (42) is pulled into the support base (41) by the support rod (42).

6. The prefabricated building body with earthquake-resistant recovery performance according to claim 5, characterized in that: A cushion table (15) is provided on the base (1). The cushion table (15) is located at the bottom of the storage groove (11) and is arranged in a circle along the outer ring of the bottom of the groove. The bottom of the superstructure (2) abuts against the cushion table (15), and the airbag (32) is located within the cushion table (15). There is a groove (322) on the top surface of the airbag (32) after inflation. A boss (16) is fixed to the bottom of the superstructure (2), and the boss (16) is wrapped by the groove (322). The magnet (43) is adsorbed to the boss (16).

7. The prefabricated building body with earthquake resistance and recovery performance according to claim 2, characterized in that: A shielding assembly (6) is provided on the base (1). The shielding assembly (6) includes a swing rod (61), a shielding plate (62), and a second spring (63). A swing groove (111) is formed in the vertical groove wall of the storage groove (11). The swing groove (111) is formed in the vertical direction and penetrates through the top of the base (1). Both the swing rod (61) and the second spring (63) are located within the swing groove (111). The swing rod (61) is rotatably connected to the base (1), and the rotation axis is horizontally arranged. The shielding plate (62) is fixedly connected to the top of the swing rod (61). The shielding plate (62) swings in the direction of approaching or departing from the superstructure (2). The second spring (63) is located at the bottom of the swing rod (61) and on the side of the swing rod (61) away from the airbag (32). One end of the second spring (63) is fixedly connected to the swing rod (61), and the other end is fixedly connected to the swing groove (111). When the airbag (32) is in the non-inflated state, the second spring (63) and the limiting cylinder (12) are distributed opposite to each other.

8. The prefabricated building body with earthquake resistance and recovery performance according to claim 7, characterized in that: The shielding plate (62) includes a first arc plate (621) and a second arc plate (622). The fixed position of the swing rod (61) and the shielding plate (62) is located at the junction of the first arc plate (621) and the second arc plate (622). The first arc plate (621) is located near the superstructure (2) of the swing rod (61), and the arc concave surface of the first arc plate (621) is arranged upward. The arc concave surface of the second arc plate (622) is arranged downward.

9. The prefabricated building body with earthquake resistance and recovery performance according to claim 6, wherein: An insertion groove (7) is formed in the support base (41). The bottom end of the support rod (42) is located within the insertion groove (7). The support base (41) is provided with a third spring (72). One end of the third spring (72) is fixedly connected to the bottom of the support rod (42), and the other end is fixedly connected to the bottom of the insertion groove (7). When the airbag (32) is in the fully inflated state, the third spring (72) is in a compressed state.

10. A prefabricated building body with earthquake-resistant recovery performance according to claim 9, characterized in that: A guiding bead (73) is rotatably connected to the support rod (42). A wire releasing groove (71) is formed in the groove wall of the insertion groove (7). The wire releasing groove (71) is formed in the vertical direction. The guiding bead (73) is located in the wire releasing groove (71). The traction rope (5) passes through the support base (41) and is located in the guiding groove. The fixing position of the traction rope (5) and the support rod (42) is below the guiding bead (73).

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