Recyclable precast concrete beam-slab and construction process thereof

Abstract

The application relates to a recyclable prefabricated concrete beam plate and a construction process thereof, and belongs to the technical field of beam plate structures. The concrete beam plate comprises a prefabricated floor, a prefabricated supporting beam and a prefabricated main beam, the prefabricated supporting beam is arranged on the prefabricated main beam, the prefabricated floor is arranged on the prefabricated supporting beam, the prefabricated supporting beam is provided with a plug-in block, the prefabricated beam plate is provided with a plug-in groove matched with the plug-in block, and a damping mechanism is arranged between the prefabricated supporting beam and the prefabricated main beam. The prefabricated main beam and the prefabricated supporting beam can be stressed cooperatively through the damping mechanism, so that the anti-seismic performance of the concrete beam plate is improved. The prefabricated floor is more quickly fixed on the prefabricated supporting beam through cooperation of the plug-in block and the plug-in groove, the stability of the connection between the prefabricated floor and the prefabricated supporting beam is improved, the construction difficulty can be greatly reduced, and therefore the construction efficiency of the concrete beam plate is effectively improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of beam-slab structures, in particular to a recyclable prefabricated concrete beam-slab and a construction process thereof. BACKGROUND

[0002] In existing fabricated beam-slab structure design, horizontal beam members and slab members are usually standardized prefabricated separately, and to ensure the integrity of the horizontal members and the calculation assumption of the rigid prefabricated floor, the horizontal members such as the beam members and the slab members are usually designed as composite beams and composite slabs, that is, after the horizontal prefabricated members are hoisted and completed in the field, the steel bars on the upper parts of the beam members and the slab members need to be bound and arranged, and finally the cast-in-place work of the composite layer is performed.

[0003] According to the related technology in the above, the following defects exist: the on-site steel bar binding operation is large in amount and difficult to operate. SUMMARY

[0004] In order to effectively improve the assembly efficiency of the concrete beam-slab, the application provides a recyclable prefabricated concrete beam-slab and a construction process thereof.

[0005] In one aspect, the application provides a recyclable prefabricated concrete beam-slab, which adopts the following technical scheme:

[0006] The recyclable prefabricated concrete beam-slab comprises a prefabricated floor, a prefabricated support beam and a prefabricated main beam, the prefabricated support beam is arranged on the prefabricated main beam, and the prefabricated floor is arranged on the prefabricated support beam; the prefabricated support beam is provided with a plug-in block, the prefabricated beam-slab is provided with a plug-in groove matched with the plug-in block, and a damping mechanism is arranged between the prefabricated support beam and the prefabricated main beam.

[0007] Through the above technical scheme, the damping mechanism can make the prefabricated main beam and the prefabricated support beam bear force cooperatively, thereby improving the anti-seismic performance of the concrete beam-slab; the plug-in block and the plug-in groove are matched, the prefabricated floor is more quickly fixed on the prefabricated support beam, the stability of the connection between the prefabricated floor and the prefabricated support beam is improved, and the construction difficulty is greatly reduced, thereby effectively improving the construction efficiency of the concrete beam-slab.

[0008] Optionally, the damping mechanism comprises a lower support, a sliding seat and an upper support, a sliding groove is formed in the upper surface of the lower support, the bottom of the sliding seat is slidably connected in the sliding groove, and the lower support is fixedly connected to the prefabricated main beam; the surface of the upper support facing the sliding seat is provided with a spherical block, a spherical groove matched with the spherical block is formed in the sliding seat, and the upper support is fixedly connected to the prefabricated support beam; damping members are arranged between the sliding seat and the groove wall of the displacement groove.

[0009] When the concrete beam plate is vibrated by external force, the spherical block cooperates with the spherical groove to enable the prefabricated support beam to deflect on the sliding seat, so that the force transmitted from the prefabricated support beam to the prefabricated main beam can be dispersed into horizontal and vertical forces through the spherical block and the spherical groove to push the sliding seat to move horizontally in the sliding groove; and the damping member can reduce the amplitude of the horizontal movement of the sliding seat, thereby improving the anti-seismic performance of the concrete beam plate.

[0010] Optionally, polytetrafluoroethylene plates are arranged between the spherical block and the spherical groove and between the lower support and the sliding seat.

[0011] By adopting the above technical scheme, the friction coefficient of the polytetrafluoroethylene plate is low, and the resistance of the prefabricated support beam to deflect on the sliding seat is smaller; at the same time, the resistance of the sliding seat to move horizontally in the sliding groove is also smaller, thereby improving the anti-seismic performance of the concrete beam plate.

[0012] Optionally, an accommodating groove for inserting the lower support is arranged on the upper surface of the prefabricated main beam, a moving groove is arranged on the side surface of the lower support, a clamping block is slidably connected in the moving groove, a clamping groove is arranged on the groove wall of the accommodating groove and matched with the clamping block, and an adjusting assembly is arranged on the lower support and used to drive the clamping block to move in the moving groove.

[0013] By adopting the above technical scheme, the clamping block cooperates with the clamping groove to reduce the possibility of the lower support and the prefabricated main beam from falling off, thereby improving the connection strength of the concrete beam plate; and the end of the clamping block can be retracted into the moving groove through the adjusting assembly, so that the damping mechanism can be conveniently detached from the prefabricated main beam, thereby accelerating the disassembly speed of the concrete beam plate.

[0014] Optionally, the adjusting assembly comprises a communication hole, a pull rod and a return spring, the communication hole is arranged on the groove wall of the sliding groove and communicates with the moving groove, the pull rod is slidably connected in the communication hole, one end of the pull rod is fixedly connected to the clamping block, the return spring is located in the moving groove, one end of the return spring is fixedly connected to the clamping block, and the other end of the return spring is fixedly connected to the groove wall of the moving groove.

[0015] By adopting the above technical scheme, pulling the pull rod enables the end of the clamping block to be retracted into the moving groove, so that the lower support can be conveniently inserted into the accommodating groove or detached from the prefabricated main beam, thereby making the assembly of the prefabricated main beam and the damping mechanism more convenient; when the clamping block is aligned with the clamping groove, the end of the clamping block is inserted into the clamping groove under the action of the return spring, thereby fixedly connecting the prefabricated main beam and the damping mechanism together.

[0016] Optionally, the end face of the clamping block away from the reset spring is an inclined face facing away from the upper support.

[0017] By adopting the above technical scheme, when the lower support is inserted into the accommodating groove, the groove wall of the accommodating groove will abut against the inclined face of the clamping block, so that the end of the clamping block is retracted into the moving groove, thereby making the assembly between the prefabricated main beam and the damping mechanism more convenient.

[0018] Optionally, a positioning block is fixedly connected to the surface of the upper support away from the lower support, and a positioning groove is formed in the prefabricated support beam and is in plug-in cooperation with the positioning block; and the end of the positioning block is provided in a rounded corner.

[0019] By adopting the above technical scheme, the positioning block and the positioning groove are cooperated to reduce the situation that the upper support and the prefabricated support beam are separated, thereby improving the connection strength of the concrete beam slab; and the shape of the end of the positioning block is set to make the positioning block more easily inserted into the positioning groove, thereby facilitating the fixing of the prefabricated support beam on the damping mechanism, and improving the assembly efficiency between the prefabricated support beam and the damping mechanism.

[0020] Optionally, a connecting block is fixedly connected to one end of the prefabricated support beam, and a connecting groove is formed in one end of the adjacent prefabricated support beam and is in clamping cooperation with the connecting block.

[0021] By adopting the above technical scheme, the connecting block and the connecting groove are cooperated to improve the connection strength between the two adjacent prefabricated support beams, thereby improving the connection strength of the entire concrete beam slab.

[0022] On the other hand, the purpose of the present application is to improve a construction process of a recyclable prefabricated concrete beam slab, which adopts the following technical scheme:

[0023] A construction process of a recyclable prefabricated concrete beam slab, comprising the following steps:

[0024] Hoisting the prefabricated main beam to the position according to the building plan;

[0025] Fixing the damping mechanism on the top end of the prefabricated main beam, and then hoisting and fixing the prefabricated support beam on the damping mechanism;

[0026] Hoisting and fixing the prefabricated floor slab on the prefabricated support beam, so that the plug-in groove on the prefabricated floor slab is cooperated with the plug-in block on the prefabricated support beam.

[0027] By adopting the above technical scheme, the damping mechanism can make the prefabricated main beam and the prefabricated support beam bear force cooperatively, thereby improving the anti-seismic performance of the concrete beam slab; the plug-in block and the plug-in groove are cooperated to make the prefabricated floor slab more quickly fixed on the prefabricated support beam, thereby improving the stability of the connection between the prefabricated floor slab and the prefabricated support beam, and greatly reducing the construction difficulty, thereby effectively improving the construction efficiency of the concrete beam slab.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The damping mechanism can make the prefabricated main beam and the prefabricated support beam bear force cooperatively, thereby improving the anti-seismic performance of the concrete beam slab; the insertion block cooperates with the insertion slot to make the prefabricated floor slab be fixed on the prefabricated support beam more quickly, improve the stability of the connection between the prefabricated floor slab and the prefabricated support beam, and greatly reduce the construction difficulty, thereby effectively improving the construction efficiency of the concrete beam slab;

[0030] 2. When the concrete beam slab is vibrated by external force, the spherical block cooperates with the spherical slot to make the prefabricated support beam deflect on the sliding seat, so that the force transmitted from the prefabricated support beam to the prefabricated main beam can be dispersed into horizontal and vertical forces through the spherical block and the spherical slot to push the sliding seat to move horizontally in the sliding groove; and the damping piece can reduce the amplitude of the horizontal movement of the sliding seat, thereby improving the anti-seismic performance of the concrete beam slab. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure diagram of a recyclable prefabricated concrete beam slab in the embodiment of the present application;

[0032] Figure 2 is a partial structure sectional view of the embodiment of the present application, mainly used for showing a connection diagram of the prefabricated floor slab and the prefabricated support beam;

[0033] Figure 3 is a partial structure sectional view of the embodiment of the present application, mainly used for showing a connection diagram of the prefabricated main beam and the damping mechanism;

[0034] Figure 4 is Figure 3 is an enlarged view of part A in

[0035] BRIEF DESCRIPTION OF DRAWINGS 1. prefabricated floor slab; 2. prefabricated support beam; 3. prefabricated main beam; 4. insertion block; 5. insertion slot; 6. damping mechanism; 61. lower support; 62. sliding seat; 63. upper support; 7. sliding groove; 8. spherical block; 9. spherical slot; 10. damping piece; 11. polytetrafluoroethylene plate; 12. containing groove; 13. moving groove; 14. clamping block; 15. clamping slot; 16. adjusting assembly; 161. communication hole; 162. pull rod; 163. return spring; 17. positioning block; 18. positioning slot; 19. connecting block; 20. connecting slot; 21. elastic ball. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the following will combine the accompanying drawings to further describe the present application. Figures 1-4The application is further described in detail in the embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the application and are not intended to limit the application.

[0037] The application discloses a recyclable prefabricated concrete beam slab. Figure 1 The concrete beam slab comprises a prefabricated floor slab 1, a prefabricated support beam 2 and a prefabricated main beam 3, the prefabricated support beam 2 is placed on the prefabricated main beam 3, and the prefabricated floor slab 1 is placed on the prefabricated support beam 2. The prefabricated floor slab 1, the prefabricated support beam 2 and the prefabricated main beam 3 are all made of reinforced concrete and are prefabricated, the prefabricated main beam 3 is arranged in a vertical direction, the prefabricated support beam 2 is arranged in a horizontal direction, and the two ends of the prefabricated support beam 2 are respectively placed on the top ends of two adjacent prefabricated main beams 3, and the prefabricated beam slab is arranged in a horizontal direction, and the two ends of the prefabricated beam slab are respectively placed above two prefabricated support beams 2 parallel to each other.

[0038] In order to improve the stability of the connection between the prefabricated beam slab and the prefabricated support beam 2, the prefabricated support beam 2 is fixedly connected with a plug-in block 4, and a plug-in slot 5 is formed in the prefabricated beam slab, and the plug-in slot 5 is in plug-in cooperation with the plug-in block 4. Figure 1 Figure 2 The plug-in block 4 is in the shape of a truncated cone, the plug-in block 4 is located on the upper surface of the prefabricated support beam 2, and the plug-in block 4 and the prefabricated support beam 2 are integrally cast, the plug-in slot 5 is located on the lower surface of the prefabricated beam slab, and the plug-in slot 5 can be reserved when the prefabricated beam slab is cast. The shape of the plug-in block 4 facilitates the sleeving of the plug-in slot 5 of the prefabricated beam slab on the plug-in block 4, so that the prefabricated floor slab 1 is more quickly fixed on the prefabricated support beam 2, the stability of the connection between the prefabricated floor slab 1 and the prefabricated support beam 2 is improved, and the construction difficulty is greatly reduced, thereby effectively improving the construction efficiency of the concrete beam slab.

[0039] It should be noted that the prefabricated support beam 2 has two plug-in blocks 4 in the width direction, and the length of the prefabricated beam slab placed on the prefabricated support beam 2 is less than or equal to half the width of the prefabricated support beam 2, that is, the opposite ends of two adjacent prefabricated beam slabs are placed on the same prefabricated support beam 2. The plug-in blocks 4 of the prefabricated support beam 2 in the length direction are arranged according to the width of the prefabricated beam slab, that is, the distance between two adjacent plug-in blocks 4 of the prefabricated support beam 2 in the length direction is the same as the width of the prefabricated beam slab.

[0040] In order to improve the stability of the connection between the prefabricated beam slab and the prefabricated support beam 2, the prefabricated support beam 2 is fixedly connected with a plug-in block 4, and a plug-in slot 5 is formed in the prefabricated beam slab, and the plug-in slot 5 is in plug-in cooperation with the plug-in block 4. Figure 1 Figure 3 ​​, in order to improve the seismic performance of the concrete beam plate, the precast support beam 2 and the precast main beam 3 are installed with damping mechanism 6, damping mechanism 6 includes lower support 61, sliding seat 62 and upper support 63, the upper surface of precast main beam 3 is provided with accommodating groove 12, accommodating groove 12 and lower support 61 plug-in cooperation. Wherein, accommodating groove 12 can be reserved when pouring precast main beam 3, through accommodating groove 12 can let damping mechanism 6 assembled on precast main beam 3 more convenient.

[0041] Referring to Figure 1 And Figure 3 , in order to improve the seismic performance of the concrete beam plate, the upper surface of lower support 61 is provided with sliding groove 7, the bottom of sliding seat 62 is connected in sliding groove 7; The surface of upper support 63 towards sliding seat 62 is fixedly connected with spherical block 8, sliding seat 62 is provided with spherical groove 9, spherical groove 9 is matched with spherical block 8; Sliding seat 62 and displacement groove wall are both installed with damping piece 10. Wherein, lower support 61, sliding seat 62, spherical block 8 and upper support 63 are made of stainless steel, and the cross section of lower support 61, sliding seat 62 and upper support 63 is square, spherical groove 9 is provided on the upper surface of sliding seat 62. Damping piece 10 adopts leaf spring, leaf spring has four groups, and four groups of leaf springs are respectively located on the four sides of sliding seat 62; The middle part of leaf spring is fixed on the side surface of sliding seat 62 by bolt, and the two ends of leaf spring abut on the groove wall of sliding groove 7.

[0042] It should be noted that when the concrete beam plate is vibrated by external force, spherical block 8 and spherical groove 9 are matched, which can make precast support beam 2 deflect on sliding seat 62, so that the force transmitted from precast support beam 2 to precast main beam 3 can be dispersed into horizontal and vertical forces through spherical block 8 and spherical groove 9, so as to push sliding seat 62 to move horizontally in sliding groove 7; Again through leaf spring, the amplitude of horizontal movement of sliding seat 62 can be reduced, thereby improving the seismic performance of the concrete beam plate.

[0043] Referring to Figure 1 And Figure 3In order to reduce the resistance of the upper support 63 to deflection, a polytetrafluoroethylene plate 11 is arranged between the spherical block 8 and the spherical groove 9 and between the lower support 61 and the sliding seat 62. The polytetrafluoroethylene plate 11 between the spherical block 8 and the spherical groove 9 is a circular arc plate, and the bottom of the spherical groove 9 is provided with a first recessed groove (not marked in the figure) for fixing the circular arc plate. The polytetrafluoroethylene plate 11 between the lower support 61 and the sliding seat 62 is a rectangular plate, and the bottom surface of the sliding seat 62 is provided with a second recessed groove (not marked in the figure) for fixing the rectangular plate. Since the friction coefficient of the polytetrafluoroethylene plate 11 is low, the resistance of the prefabricated support beam 2 to deflection on the sliding seat 62 is smaller; at the same time, the resistance of the sliding seat 62 to horizontal movement in the sliding groove 7 is also smaller, thereby improving the anti-seismic performance of the concrete beam slab.

[0044] With reference to Figure 3 and Figure 4 , in order to reduce the situation that the lower support 61 and the prefabricated main beam 3 fall off, the side surface of the lower support 61 is provided with a moving groove 13, the moving groove 13 is slidably connected with a clamping block 14, the groove wall of the containing groove 12 is provided with a clamping groove 15, and the clamping groove 15 and the clamping block 14 are inserted and matched. Through the cooperation of the clamping block 14 and the clamping groove 15, the situation that the lower support 61 and the prefabricated main beam 3 fall off can be reduced, thereby improving the connection strength of the concrete beam slab.

[0045] With reference to Figure 3 and Figure 4 , in order to more conveniently disassemble the damping mechanism 6 from the prefabricated main beam 3, the lower support 61 is provided with an adjusting assembly 16 for driving the clamping block 14 to move in the moving groove 13, the adjusting assembly 16 includes a communication hole 161, a pull rod 162 and a reset spring 163, the communication hole 161 is arranged on the groove wall of the sliding groove 7, and the communication hole 161 is in communication with the moving groove 13; the pull rod 162 is slidably connected in the communication hole 161, one end of the pull rod 162 is fixedly connected to the clamping block 14, the other end of the pull rod 162 is fixedly connected with an elastic ball 21, and the elastic ball 21 is located in the sliding groove 7; the reset spring 163 is located in the moving groove 13, one end of the reset spring 163 is fixedly connected to the clamping block 14 by welding, and the other end of the reset spring 163 is fixedly connected to the groove wall of the moving groove 13 by welding.

[0046] It should be noted that by pulling the elastic ball 21, the end of the clamping block 14 can be retracted into the moving groove 13, facilitating the insertion of the lower support 61 into the accommodating groove 12 or the disassembly of the lower support 61 from the prefabricated main beam 3, so that the assembly between the prefabricated main beam 3 and the damping mechanism 6 is more convenient; when the clamping block 14 is aligned with the clamping groove 15, the end of the clamping block 14 will be inserted into the clamping groove 15 under the action of the reset spring 163, so as to fixedly connect the prefabricated main beam 3 and the damping mechanism 6 together; at the same time, when the sliding seat 62 moves horizontally in the sliding groove 7, the elastic ball 21 can reduce the blockage of the horizontal movement of the sliding seat 62, thereby improving the anti-seismic performance of the concrete beam slab.

[0047] With reference to Figure 3 and Figure 4 , in order to make the assembly between the prefabricated main beam 3 and the damping mechanism 6 more convenient, the end surface of the clamping block 14 away from the reset spring 163 is an inclined surface facing away from the upper support 63. When the lower support 61 is inserted into the accommodating groove 12, the groove wall of the accommodating groove 12 will abut against the inclined surface of the clamping block 14, so that the end of the clamping block 14 is retracted into the moving groove 13, thereby making the assembly between the prefabricated main beam 3 and the damping mechanism 6 more convenient.

[0048] With reference to Figure 2 and Figure 3 , in order to reduce the situation that the upper support 63 and the prefabricated support beam 2 fall off, the surface of the upper support 63 away from the lower support 61 is fixedly connected with a positioning block 17, and the prefabricated support beam 2 is provided with a positioning groove 18, and the positioning groove 18 is inserted and matched with the positioning block 17; that is, the upper support 63 is fixedly connected to the prefabricated support beam 2, and the end of the positioning block 17 is provided in a rounded corner. The positioning block 17 is made of stainless steel, and the positioning block 17 is fixed on the upper surface of the upper support 63 by welding; the positioning groove 18 can be reserved when pouring the prefabricated support beam 2. Through the cooperation of the positioning block 17 and the positioning groove 18, the situation that the upper support 63 and the prefabricated support beam 2 fall off can be reduced, thereby improving the connection strength of the concrete beam slab; through the shape setting of the end of the positioning block 17, the positioning block 17 can be more easily inserted into the positioning groove 18, facilitating the fixation of the prefabricated support beam 2 on the damping mechanism 6, thereby improving the assembly efficiency between the prefabricated support beam 2 and the damping mechanism 6.

[0049] With reference to Figure 2 and Figure 3To improve the overall connection strength of the concrete beam-slab, a connecting block 19 is fixedly connected to one end of the precast support beam 2, and a connecting groove 20 is provided at one end of the adjacent precast support beam 2. The connecting groove 20 engages with the connecting block 19. The connecting block 19 has an isosceles trapezoidal cross-section and is integrally cast with the precast support beam 2. The connecting groove 20 can be pre-cast during the casting of the precast support beam 2. The engagement of the connecting block 19 and the connecting groove 20 enhances the connection strength between adjacent precast support beams 2, thereby improving the overall connection strength of the concrete beam-slab.

[0050] It should be noted that, in order to better connect the four precast support beams 2 placed on the same upper support 63, two connecting blocks 19 are integrally formed at the ends of two opposing precast support beams 2, one precast support beam 2 has one connecting block 19 integrally formed at its end and two connecting slots 20, and the other precast support beam 2 has three connecting slots 20 at its end. That is, the connecting blocks 19 on two opposing precast support beams 2 respectively engage with the connecting slots 20 on the other two opposing precast support beams 2, and the connecting blocks 19 and connecting slots 20 on the other two opposing precast support beams 2 then engage with each other.

[0051] This application also discloses a construction process for recyclable precast concrete beams and slabs, which includes the following steps:

[0052] Step S1: Hoist the precast main beam 3 into place according to the architectural plan and fix it on the ground;

[0053] Step S2: Insert the lower support 61 of the shock absorption mechanism 6 into the receiving groove 12, and let the snap-fit ​​block 14 be inserted into the snap-fit ​​groove 15 under the action of the compression spring, thereby fixing the shock absorption mechanism 6 onto the precast main beam 3.

[0054] Step S3: The end of the precast support beam 2 is placed on the upper support 63 by hoisting, so that the positioning groove 18 of the precast support beam 2 is sleeved on the positioning block 17, and at the same time, the connecting block 19 on the adjacent precast support beam 2 is engaged in the engaging groove 15.

[0055] Step S4: Finally, the precast floor slab 1 is hoisted and placed on the precast support beam 2, so that the insertion groove 5 on the precast floor slab 1 matches the insertion block 4 on the precast support beam 2.

[0056] It should be noted that the damping mechanism 6 enables the precast main beam 3 and the precast support beam 2 to share the load together, thereby improving the seismic performance of the concrete beam and slab. Through the cooperation of the plug-in block 4 and the plug-in slot 5, the precast floor slab 1 can be fixed to the precast support beam 2 more quickly, which improves the stability of the connection between the precast floor slab 1 and the precast support beam 2, and can greatly reduce the construction difficulty, thereby effectively improving the construction efficiency of the concrete beam and slab.

[0057] The above are only preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Any feature disclosed in the specification (including the abstract and drawings) can be replaced by other equivalent or similar features or substituted features having the same or similar purposes, unless otherwise specifically stated. Therefore, equivalent changes made to the structure, shape, principle of the present application should be covered by the protection scope of the present application.

Claims

1. A recyclable precast concrete beam slab comprising a precast floor slab (1), a precast support beam (2) and a precast main beam (3), the precast support beam (2) being arranged on the precast main beam (3) and the precast floor slab (1) being arranged on the precast support beam (2), characterized in that, The prefabricated support beam (2) is provided with a plug-in block (4), and the prefabricated floor (1) is provided with a plug-in groove (5) matched with the plug-in block (4); the prefabricated support beam (2) and the prefabricated main beam (3) are provided with a damping mechanism (6); The damping mechanism (6) comprises a lower support (61), a sliding seat (62) and an upper support (63), the upper surface of the lower support (61) is provided with a sliding groove (7), the bottom of the sliding seat (62) is slidably connected to the sliding groove (7), and the lower support (61) is fixedly connected to the prefabricated main beam (3); the surface of the upper support (63) facing the sliding seat (62) is provided with a spherical block (8), the sliding seat (62) is provided with a spherical groove (9) matched with the spherical block (8), and the upper support (63) is fixedly connected to the prefabricated support beam (2); the sliding seat (62) and the groove wall of the sliding groove (7) are both provided with a damping piece (10). The upper surface of the prefabricated main beam (3) is provided with a containing groove (12) for inserting the lower support (61), the side surface of the lower support (61) is provided with a moving groove (13), the moving groove (13) is slidably connected with a clamping block (14), and the groove wall of the containing groove (12) is provided with a clamping groove (15) matched with the clamping block (14); the lower support (61) is provided with an adjusting assembly (16) for driving the clamping block (14) to move in the moving groove (13).

2. The recyclable precast concrete beam slab according to claim 1, wherein, The spherical block (8) and the spherical groove (9) and the lower support (61) and the sliding seat (62) are both provided with a polytetrafluoroethylene plate (11).

3. The recyclable precast concrete beam slab of claim 1, wherein, The adjusting assembly (16) comprises a communication hole (161), a pull rod (162) and a reset spring (163), the communication hole (161) is formed in the groove wall of the sliding groove (7), and the communication hole (161) is in communication with the moving groove (13); the pull rod (162) is slidably connected in the communication hole (161), and one end of the pull rod (162) is fixedly connected to the clamping block (14); the reset spring (163) is located in the moving groove (13), one end of the reset spring (163) is fixedly connected to the clamping block (14), and the other end of the reset spring (163) is fixedly connected to the groove wall of the moving groove (13).

4. The recyclable precast concrete beam slab according to claim 3, wherein, The end surface of the clamping block (14) away from the reset spring (163) is an inclined surface away from the upper support (63).

5. The recyclable precast concrete beam slab of claim 1, wherein, The surface of the upper support (63) away from the lower support (61) is fixedly connected with a positioning block (17), and the prefabricated support beam (2) is provided with a positioning groove (18) matched with the positioning block (17); the end of the positioning block (17) is provided in a rounded corner.

6. The recyclable precast concrete beam slab of claim 5, wherein, One end of the prefabricated support beam (2) is fixedly connected with a connecting block (19), and one end of an adjacent prefabricated support beam (2) is provided with a connecting groove (20) matched with the connecting block (19).

7. A construction process of a recyclable precast concrete beam slab, characterized by, The recyclable prefabricated concrete beam plate comprises the following steps: The prefabricated main beam (3) is hoisted to the position according to the building planning map; The prefabricated main beam (3) is hoisted to the position according to the building planning map; The shock-absorbing mechanism (6) is fixed on the top end of the prefabricated main beam (3), and the prefabricated support beam (2) is hoisted and fixed on the shock-absorbing mechanism (6); The prefabricated floor (1) is hoisted and fixed on the prefabricated support beam (2), so that the plug-in slot (5) on the prefabricated floor (1) matches the plug-in block (4) on the prefabricated support beam (2).

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