Supporting-free damping and sound insulation prefabricated floor slab with self-adaptive deformation adjustment function and mounting method

Abstract

The invention relates to the technical field of floor slabs, in particular to a self-adaptive deformation adjusting support-free damping and sound insulation prefabricated floor slab and an installation method.The self-adaptive deformation adjusting support-free damping and sound insulation prefabricated floor slab comprises a first floor slab body, reinforcing steel bars are arranged in the first floor slab body, angle steel supports are arranged on the side wall of the first floor slab body, and the self-adaptive deformation adjusting support-free damping and sound insulation prefabricated floor slab further comprises elastic pieces arranged at the two ends of the reinforcing steel bars; the foam base plate is arranged between the first floor and the elastic piece; by arranging the prefabricated floor slab, the current situation that a traditional prefabricated floor slab does not have the damping capacity is changed, the capacity of automatically adjusting deformation of the prefabricated floor slab can be improved, the anti-seismic performance is improved, and damage of earthquakes to buildings is reduced; support of a prefabricated floor slab can be omitted, and the construction efficiency is improved; meanwhile, the middle layer of the floor adopts the insulation board and the honeycomb structure, so that the structural strength of the middle layer is ensured, and the sound insulation and heat preservation performance of the floor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of floor slabs, and in particular to a self-adaptive deformation-adjustable support-free, shock-absorbing and sound-insulating prefabricated floor slab and an installation method thereof. Background Art

[0002] At present, the rigidity of prefabricated buildings is too large. For example, the masonry infill wall is replaced with prefabricated concrete wall panels, which increases the rigidity and leads to the increase of earthquake force. During an earthquake, the floor slab cannot deform in the plane. As a non-seismic component, it often cannot absorb earthquake energy and cannot contribute to shock absorption. The results of a large number of earthquake-related house collapses show that after the beams and columns are damaged, the floor slabs are often relatively intact. When an earthquake comes, the beams and columns bear everything, while the floor slabs lie flat and do nothing.

[0003] With the continuous advancement of construction technology, especially in high-rise buildings and large industrial plants, higher requirements are placed on the seismic resistance, bearing capacity and construction efficiency of floor slabs. Traditional composite floor slabs are non-seismic, fully rigid components in the plane, with weak ability to absorb seismic energy and lack of effective deformation adjustment capabilities. In addition, a support system still needs to be set up during the construction process, which increases the difficulty and cost of construction. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned deficiencies and provide a support-free, shock-absorbing and sound-insulating prefabricated floor slab with adaptive deformation adjustment and an installation method.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A self-adaptive deformation-adjustable, support-free, shock-absorbing, and sound-insulating prefabricated floor slab comprises a first floor slab, wherein reinforcing steel bars are arranged in the first floor slab, and angle steel supports are arranged on the side walls of the first floor slab, and further comprises:

[0007] Elastic members, arranged at both ends of the reinforcing steel bars, for shock absorption of the first floor slab;

[0008] A foam pad is arranged between the first floor plate and the elastic member;

[0009] A second floor slab is arranged on the top of the first floor slab;

[0010] Telescopic rods are arranged at the four corners of the second floor slab to support the second floor slab;

[0011] The third damping member is arranged between the second floor plate and the first floor plate and is used for shock absorption of the second floor plate.

[0012] Furthermore, the side wall of the first floor slab is provided with a convex plate, and the side wall of the convex plate is provided with a sliding groove. The elastic member includes a sleeve plate fixed on the cross beam, and a movable slider sliding in the sliding groove is provided in the sleeve plate. An extrusion component is sleeved on the reinforcing steel bar, and a first damping member is also provided on the sleeve plate. One side of the extrusion component slides in the sleeve plate and is connected to the first damping member.

[0013] Furthermore, the extrusion assembly includes an extrusion plate that is sleeved on the reinforcing steel bars, deflection pressure plates are rotatably arranged on both sides of the extrusion plate, a movable groove is opened on the inner wall of the sleeve plate, a sliding rod is arranged in the movable groove, and a limit slider sleeved on the sliding rod is rotatably arranged at one end of the deflection pressure plate away from the extrusion plate, and the limit slider is connected to the first damping member.

[0014] Furthermore, a limiting rod is also provided on the limiting sliding block, a groove is provided on the convex plate, a second damping member is provided in the groove, and the limiting rod can extend into the groove and push the second damping member.

[0015] Furthermore, the first damping member includes a base plate fixed in the movable groove, a sleeve is arranged on the base plate, a first cavity and a second cavity are opened in the sleeve, and the first cavity is connected to the second cavity through a through hole, an airbag is arranged in the second cavity, a push rod is inserted into the sleeve, one end of the push rod is connected to the limiting slider, the other end of the push rod extends into the first cavity and is connected to the piston plate, a return spring sleeved on the push rod is arranged between the sleeve and the limiting slider, and the structures of the second damping member and the third damping member are the same as the first damping member.

[0016] Furthermore, a tensile component is provided at the bottom of the second floor slab, and a compressive component sleeved on the reinforcing steel bars is provided in the first floor slab, one end of the compressive component is connected to the extrusion plate, and the other end of the compressive component is connected to the tensile component.

[0017] Furthermore, the compression component includes a connecting block connected to the tensioning component, the connecting block is sleeved on the reinforcing steel bar, a compression sleeve is provided on one side of the connecting block, the compression sleeve is sleeved on the reinforcing steel bar, the end of the compression sleeve away from the connecting block is connected to the extrusion plate, and a limit spring sleeved on the compression sleeve is provided between the connecting block and the inner wall of the first floor slab.

[0018] Furthermore, the stretching assembly includes a first push plate connected to the connecting block, a rotating block is fixedly provided at the bottom of the second floor plate, a second push plate is rotatably provided on the rotating block, and one end of the second push plate away from the rotating block is rotatably connected to the first push plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention changes the current situation that traditional prefabricated floors have no shock-absorbing ability by providing prefabricated floors, and can increase the ability of prefabricated floors to automatically adjust deformation, improve earthquake resistance, and reduce earthquake damage to buildings; and can eliminate the support of prefabricated floors, thereby improving construction efficiency; at the same time, the middle layer of the floor adopts an insulation board and a honeycomb structure, which not only ensures the structural strength of the middle layer, but also improves the sound insulation and heat preservation performance of the floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a top view of the present invention;

[0023] Figure 2 It is a schematic diagram of the connection between the foam pad and the elastic member of the present invention;

[0024] Figure 3 is a top view of the first floor of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation of the second floor slab and the first floor slab of the present invention;

[0026] Figure 5 is a schematic diagram of the connection between the second floor slab and the first floor slab of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the elastic member of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection between the extrusion assembly and the sleeve plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0030] Fig. 9 is a schematic structural diagram of the first damping member of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the pressure-bearing component of the present invention.

[0032] In the figure: 1, first floor; 11, convex plate; 12, second damping member; 2, reinforcing steel bar; 3, angle steel support; 4, elastic member; 41, sleeve plate; 411, slide rod; 412, moving slider; 42, extrusion assembly; 421, extrusion plate; 422, deflection pressure plate; 423, limit slider; 43, first damping member; 431, bottom plate; 432, sleeve; 433, first cavity; 434, second cavity; 435, through hole; 436, push rod; 437, piston plate; 438, return spring; 44, limit rod; 45, pressure assembly; 451, connecting block; 452, pressure sleeve; 453, limit spring; 5, foam pad; 6, second floor; 61, first push plate; 62, rotating block; 63, second push plate; 7, telescopic rod; 8, third damping member. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] Reference Figure 1-Figure 3 As shown, this embodiment provides a simple structure;

[0036] A self-adaptive deformation-adjustable support-free shock-absorbing and sound-insulating prefabricated floor slab comprises a first floor slab 1, a reinforcing steel bar 2 is arranged in the first floor slab 1, and an angle steel support 3 is arranged on the side wall of the first floor slab 1, so that support-free installation can be achieved, and further comprises:

[0037] The elastic member 4 is arranged at both ends of the reinforcing steel bar 2, wherein one side of the first floor slab 1 of the elastic member 4 is fixed on the cross beam, that is, the first floor slab 1 can slide horizontally relative to the elastic member 4, and when vibration occurs, the first floor slab 1 can slide horizontally to reduce the vibration of the first floor slab 1;

[0038] The foam pad 5 is arranged between the first floor slab 1 and the elastic member 4. When the first floor slab 1 vibrates horizontally, the foam pad 5 can be squeezed to deform, thereby improving the displacement and deformation capacity of the entire floor slab.

[0039] The honeycomb-shaped insulation board 10 is arranged in the first floor slab 1 to improve the sound insulation and heat preservation of the floor slab.

[0040] First, the ends of the reinforcing steel bars 2 are bent to form bent steel bars, thereby forming elastic parts 4; after the first floor slab 1 and the reinforcing steel bars 2 of the top layer are tied, the angle steel supports 3 are welded and fixed at the ends of the reinforcing steel bars 2, and then the foam board 5 is installed within a certain range of the ends of the reinforcing steel bars 2; first, the bottom steel mesh is laid on the formwork and the bottom concrete is poured, and then the flexible insulation board 10 is laid, and the middle layer concrete is poured to form a honeycomb middle layer structure, and finally the top steel mesh is laid and the top concrete is poured to form an integrally prefabricated first floor slab 1; when the prefabricated first floor slab 1 is hoisted on site, the angle steel supports 3 at the ends of the reinforcing steel bars 2 can be used to form support, so that the first floor slab 1 is supported by the prefabricated beams on all sides. On the support; the cast-in-place sections around the first floor slab 1 are cast on site to form the whole floor slab; the elastic member 4, that is, the spring end can be stretched and deformed in the insulation board 10, and at the same time, the spring end not in the insulation board 10 is bent and anchored, which can still ensure the effective anchoring force of the steel bar, and then when the structure is stressed, the reinforcing steel bar 2 in the first floor slab 1 can automatically adapt to the deformation and displacement of the structure. When encountering an earthquake, the deformation capacity within the plane of the first floor slab 1 is increased, and at the same time, the stiffness of the first floor slab 1 is guaranteed, which can absorb earthquake energy and play a shock-absorbing effect; the middle layer of the first floor slab 1 adopts an insulation board 10 and a honeycomb structure. The insulation board 10 can improve the sound insulation and thermal insulation performance of the floor slab, and the honeycomb structure can ensure the structural strength of the middle layer.

[0041] The support-free, shock-absorbing and sound-insulating fully prefabricated floor slab (shock-absorbing floor slab) with adaptive deformation adjustment has changed the current situation that traditional prefabricated floor slabs have no shock-absorbing ability. It can increase the ability of prefabricated floor slabs to automatically adjust deformation, improve seismic performance, and reduce earthquake damage to buildings; it can also eliminate the support of prefabricated floor slabs, thereby improving construction efficiency; at the same time, the middle layer of the floor slab adopts insulation board and honeycomb structure, which not only ensures the structural strength of the middle layer, but also improves the sound insulation and heat preservation performance of the floor slab.

[0042] In terms of economic benefits:

[0043]

[0044] According to calculation:

[0045] The comprehensive cost of the shock-absorbing floor is 184 yuan / m 2 The comprehensive cost unit price of traditional composite panels is 180 yuan / m 2 , the cost remains basically the same.

[0046] The shock-absorbing floor integrates shock-absorbing, sound insulation and thermal insulation functions, has a high degree of integration, and improves the quality of the floor.

[0047] It can eliminate the need for floor support, reduce on-site pouring workload by 90%, and shorten floor construction period by 80%.

[0048] Due to the built-in insulation board, the traditional 3cm thick LC15 all-light concrete floor insulation layer can be eliminated, reducing the floor building thickness and increasing the indoor clearance.

[0049] At the same time, the support-free, shock-absorbing and sound-insulating fully prefabricated floor slabs with adaptive deformation adjustment can be applied to prefabricated floor slabs of various civil and public buildings.

[0050] Reference Figure 4-Figure 10 As shown, on the basis of the above, some reinforcement structures for facing vertical vibration are added, and combined with the lateral deformation capacity of the first floor slab 1:

[0051] For example, the second floor 6 is arranged on the top of the first floor 1, and the second floor 6 can move up and down relative to the first floor 1. When the floor vibrates vertically, the second floor 6 can vibrate up and down;

[0052] Telescopic rods 7 are arranged at four corners of the second floor slab 6 to support the second floor slab 6;

[0053] The third damping member 8 is arranged between the second floor 6 and the first floor 1, and is used for shock absorption of the second floor 6. When the second floor 6 vibrates, it will dissipate energy together with the third damping member 8, thereby achieving a shock absorption effect.

[0054] In one embodiment, a convex plate 11 is provided on the side wall of the first floor slab 1, a slide groove is provided on the side wall of the convex plate 11, the elastic member 4 includes a sleeve plate 41 fixed on the cross beam, a movable slider 412 is provided in the sleeve plate 41 and slides in the slide groove, an extrusion assembly 42 is sleeved on the reinforcing steel bar 2, a first damping member 43 is further provided on the sleeve plate 41, one side of the extrusion assembly 42 slides in the sleeve plate 41 and is connected to the first damping member 43;

[0055] When the first floor 1 vibrates horizontally, one side of the first floor 1 will slide toward the sleeve plate 41 on that side, and the convex plate 11 will push the extrusion assembly 42, which will squeeze the first damping member 43, while the other side of the first floor 1 will pull the extrusion assembly 42, and the extrusion assembly 42 will pull the first damping member 43. The first damping members 43 on both sides will be used to dissipate the vibration and achieve a shock-absorbing effect.

[0056] In one embodiment, the extrusion assembly 42 includes an extrusion plate 421 sleeved on the reinforcing steel bar 2, and deflection pressure plates 422 are rotatably provided on both sides of the extrusion plate 421. A movable groove is provided on the inner wall of the sleeve plate 41, and a slide bar 411 is provided in the movable groove. A limit slider 423 sleeved on the slide bar 411 is rotatably provided at one end of the deflection pressure plate 422 away from the extrusion plate 421, and the limit slider 423 is connected to the first damping member 43;

[0057] When the first floor slab 1 vibrates, the extrusion plate 421 on one side slides toward the side sleeve plate 41, and the extrusion plate 421 pushes the deflection pressure plate 422, which deflects, thereby pushing the first damping member 43 through the limiting slider 423, and the extrusion plate 421 on the other side will pull the extrusion plate 421, and the extrusion plate 421 pulls the deflection pressure plate 422 to deflect, and the deflection pressure plate 422 will pull the first damping member 43 through the limiting slider 423.

[0058] In one embodiment, a limiting rod 44 is further provided on the limiting slider 423. Initially, there is a certain distance between the limiting rod 44 and the convex plate 11. A groove is provided on the convex plate 11, and a second damping member 12 is provided in the groove. The limiting rod 44 can extend into the groove and push the second damping member 12. Since the convex plate 11 moves toward the sleeve plate 41, the limiting rod 44 will be close to the convex plate 11. If the vibration is large and the first damping member 43 is insufficient to meet the shock absorption requirement, when the deflection pressure plate 422 pushes the first damping member 43 to the limit, the limiting slider 423 will open to both sides, allowing the limiting rod 44 to contact the convex plate 11, and at this time the limiting rod 44 is aligned with the groove. When the first floor slab 1 continues to move, the limiting rod 44 will be inserted into the groove and squeeze the second damping member 12.

[0059] In one embodiment, the first damping member 43 includes a base plate 431 fixed in a movable groove, a sleeve 432 is provided on the base plate 431, a first cavity 433 and a second cavity 434 are opened in the sleeve 432, and the first cavity 433 is connected to the second cavity 434 through a through hole 435, an airbag is provided in the second cavity 434, a push rod 436 is inserted into the sleeve 432, one end of the push rod 436 is connected to the limiting slider 423, and the other end of the push rod 436 extends into the first cavity 433 and is connected to a piston plate 437, a return spring 438 is provided between the sleeve 432 and the limiting slider 423 and is sleeved on the push rod 436, and the structures of the second damping member 12 and the third damping member 8 are the same as those of the first damping member 43.

[0060] In one embodiment, a tensile component is further provided at the bottom of the second floor 6, and a compression component 45 is provided inside the first floor 1 and sleeved on the reinforcing steel bar 2, one end of the compression component 45 is connected to the extrusion plate 421, and the other end of the compression component 45 is connected to the tensile component, and the compression component 45 itself also has a certain elasticity;

[0061] The pressure component 45 has two functions. When the second floor 6 moves downward during vertical vibration, the pressure component 45 is pushed by the tension component, so that the pressure component 45 is opened to the surroundings, thereby compressing the pressure component 45 first and compressing the third damping member 8 at the same time. When the pressure component 45 moves outward, it pushes the extrusion plate 421, thereby squeezing the first damping member 43.

[0062] When the horizontal vibration is large, as mentioned before, when the extrusion assembly 42 on one side starts the second damping member 12, a similar situation will occur in the extrusion assembly 42 on the other side. Specifically, the extrusion plate 421 on the other side will pull the deflection pressure plates 422 at both ends until the deflection pressure plates 422 are perpendicular to the extrusion plate 421. At this time, the first floor slab 1 continues to move, and the extrusion plate 421 will stop due to the tension, forcing the extrusion plate 421 to separate from the convex plate 11, and the pressure assembly 45 is fixedly connected to the extrusion plate 421, that is, the pressure assembly 45 will also stop, and the first floor slab 1 will squeeze the pressure assembly 45. At the same time, when the first floor slab 1 is displaced relative to the pressure assembly 45, the tensile assembly will be pulled in the opposite direction, so that the second floor slab 6 on this side moves downward, compressing the third damping member 8, and using the elastic force of the pressure assembly 45 and the third damping member 8 to dissipate energy.

[0063] In one embodiment, the compression component 45 includes a connecting block 451 connected to the tensioning component, the connecting block 451 is sleeved on the reinforcing steel bar 2, a compression sleeve 452 is arranged on one side of the connecting block 451, the compression sleeve 452 is sleeved on the reinforcing steel bar 2, the end of the compression sleeve 452 away from the connecting block 451 is connected to the extrusion plate 421, and a limit spring 453 sleeved on the compression sleeve 452 is arranged between the connecting block 451 and the inner wall of the first floor 1; when vertical vibration occurs, the second floor 6 moves downward, and the connecting block 451 will be pushed through the tensioning component, and the connecting block 451 will push the extrusion plate 421 through the compression sleeve 452, and the first damping member 43 is squeezed by the extrusion plate 421, and the limit spring 453 will also be compressed and in a contracted state.

[0064] In one embodiment, the stretching assembly includes a first push plate 61 connected to the connecting block 451, and a rotating block 62 is fixedly provided at the bottom of the second floor 6, and a second push plate 63 is rotatably provided on the rotating block 62, and one end of the second push plate 63 away from the rotating block 62 is rotatably connected to the first push plate 61.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A prefabricated floor slab with self-adaptive deformation adjustment and vibration-absorbing sound insulation, comprising a first floor slab (1), wherein a reinforcing steel bar (2) is arranged inside the first floor slab (1), and an angle steel support (3) is arranged on the side wall of the first floor slab (1), characterized in that: Also includes: Elastic members (4) are arranged at both ends of the reinforcing steel bars (2) and are used for shock absorption of the first floor slab (1); A foam pad (5) is arranged between the first floor plate (1) and the elastic member (4); A honeycomb-shaped thermal insulation board (10) is arranged in the first floor slab (1) and is used to improve the sound insulation and thermal insulation effects of the first floor slab (1).

2. The self-adaptive deformation-adjustable prefabricated floor slab according to claim 1 is characterized in that: A second floor plate (6) is also arranged on the first floor plate, and telescopic rods (7) are arranged at the four corners of the second floor plate (6) for supporting the second floor plate (6), and a third damping member (8) is arranged between the second floor plate (6) and the first floor plate (1) for reducing the vibration of the second floor plate (6).

3. The self-adaptive deformation-adjustable prefabricated floor slab according to claim 2 is characterized in that: The side wall of the first floor slab (1) is provided with a convex plate (11), and the side wall of the convex plate (11) is provided with a sliding groove. The elastic member (4) comprises a sleeve plate (41) fixed on the cross beam, and a movable slider (412) is provided in the sleeve plate (41) and slides in the sliding groove. An extrusion component (42) is sleeved on the reinforcing steel bar (2), and a first damping member (43) is also provided on the sleeve plate (41). One side of the extrusion component (42) slides in the sleeve plate (41) and is connected to the first damping member (43).

4. The self-adaptive deformation-adjustable prefabricated floor slab according to claim 3 is characterized in that: The extrusion assembly (42) comprises an extrusion plate (421) sleeved on the reinforcing steel bar (2), deflection pressure plates (422) are rotatably arranged on both sides of the extrusion plate (421), a movable groove is opened on the inner wall of the sleeve plate (41), a slide bar (411) is arranged in the movable groove, and a limiting slider (423) sleeved on the slide bar (411) is rotatably arranged at one end of the deflection pressure plate (422) away from the extrusion plate (421), and the limiting slider (423) is connected to the first damping member (43).

5. The self-adaptive deformation-adjustable prefabricated floor slab without support, shock absorption and sound insulation according to claim 4, characterized in that: The limiting slider (423) is also provided with a limiting rod (44), the convex plate (11) is provided with a groove, a second damping member (12) is arranged in the groove, and the limiting rod (44) can extend into the groove and push the second damping member (12).

6. The self-adaptive deformation-adjustable prefabricated floor slab without support, shock absorption and sound insulation according to claim 4, characterized in that: The first damping member (43) comprises a base plate (431) fixed in the movable groove, a sleeve (432) is arranged on the base plate (431), a first cavity (433) and a second cavity (434) are opened in the sleeve (432), and the first cavity (433) is connected to the second cavity (434) through a through hole (435), an air bag is arranged in the second cavity (434), a push rod (436) is inserted into the sleeve (432), one end of the push rod (436) is connected to the limiting slider (423), and the other end of the push rod (436) extends into the first cavity (433) and is connected to the piston plate (437), a return spring (438) sleeved on the push rod (436) is arranged between the sleeve (432) and the limiting slider (423), and the structures of the second damping member (12) and the third damping member (8) are the same as those of the first damping member (43).

7. The self-adaptive deformation-adjustable prefabricated floor slab without support, shock absorption and sound insulation according to claim 6, characterized in that: A tensile component is also provided at the bottom of the second floor slab (6), and a compressive component (45) sleeved on the reinforcing steel bar (2) is provided in the first floor slab (1), one end of the compressive component (45) is connected to the extrusion plate (421), and the other end of the compressive component (45) is connected to the tensile component.

8. The self-adaptive deformation-adjustable prefabricated floor slab without support, shock absorption and sound insulation according to claim 7, characterized in that: The compression component (45) comprises a connecting block (451) connected to the tension component, the connecting block (451) being sleeved on the reinforcing steel bar (2), a compression sleeve (452) being arranged on one side of the connecting block (451), the compression sleeve (452) being sleeved on the reinforcing steel bar (2), one end of the compression sleeve (452) away from the connecting block (451) being connected to the extrusion plate (421), and a limit spring (453) being sleeved on the compression sleeve (452) being arranged between the connecting block (451) and the inner wall of the first floor slab (1).

9. The self-adaptive deformation-adjustable prefabricated floor slab without support, shock absorption and sound insulation according to claim 8, characterized in that: The stretching assembly comprises a first push plate (61) connected to a connecting block (451); a rotating block (62) is fixedly arranged at the bottom of the second floor plate (6); a second push plate (63) is rotatably arranged on the rotating block (62); and one end of the second push plate (63) away from the rotating block (62) is rotatably connected to the first push plate (61).

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