A vibration-damping and noise-reducing lightweight steel bar truss composite floor slab and pouring method

Abstract

The present invention discloses a vibration damping and noise reduction type lightweight steel bar truss composite floor slab and a pouring method, including: a support assembly, including a support bottom plate and a middle support body arranged on the support bottom plate, and a plurality of the middle support bodies are arranged in an array; a floor slab assembly, including a support layer covering the outside of the support bottom plate, a vibration damping layer arranged on the support layer, and an upper top layer arranged on the vibration damping layer; and a vibration damping assembly, the vibration damping assembly is arranged between the upper top layer and the vibration damping layer, and a periodic composite structure is formed by the support assembly, the vibration damping assembly, the floor slab assembly, etc. According to the Bragg scattering mechanism, the forbidden band frequency range of the structure is controlled by adjusting the structure array, and the propagation of vibration energy in the structure is controlled, thereby improving the vibration damping and noise reduction ability of the structure.

Description

Technical Field

[0001] The present invention relates to the technical field of building vibration reduction and noise reduction, and particularly to a vibration reduction and noise reduction type lightweight steel bar truss composite floor slab and a pouring method thereof. Background Art

[0002] At present, the commonly used floor slabs in residential buildings in China are cast-in-place reinforced concrete floor slabs, precast concrete hollow floor slabs, steel bar truss concrete composite floor slabs, etc. A cast-in-place reinforced concrete floor slab refers to a floor slab made by formwork erection, steel bar binding, concrete pouring, curing, and formwork removal at the site according to the designed position. A precast concrete hollow floor slab is a floor slab with cavities formed in the floor slab by pouring concrete after placing embedded inner molds according to certain rules. A steel bar truss composite floor slab refers to a composite slab structure form in which upper and lower longitudinal stressed steel bars and bent steel bars are welded to form a steel bar truss, and a precast layer is formed by pouring concrete externally, and the composite layer concrete is poured at the construction site.

[0003] Among the commonly used floor slab systems in China, compared with the cast-in-place reinforced concrete floor slab, the steel bar truss composite floor slab has the advantages of lower cost and shorter construction period, and at the same time, it has better overall performance and crack resistance in large-span structures; compared with the precast hollow floor slab, the steel bar truss composite floor slab has better overall stiffness and superior seismic performance. However, when the current steel bar truss composite floor slab is designed, it often focuses on safety performance and ignores the requirements for comfort performance, resulting in the vibration reduction and noise reduction performance of the current floor slab often not meeting the needs of residents' normal life, and noise nuisance incidents occur frequently. For example, the vibration noise caused by pedestrian loads or jumping loads in residential buildings, the noise directly transmitted by other noise sources, etc. seriously affect the daily life of residents. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, the abstract of the specification, and the title of the invention of the present application to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned existing vibration reduction and noise reduction type lightweight steel bar truss composite floor slab, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a vibration reduction and noise reduction type lightweight steel bar truss composite floor slab and a pouring method thereof.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A vibration and noise reduction type lightweight steel bar truss composite floor slab, comprising a support assembly, including a support bottom plate and a middle support body disposed on the support bottom plate, and a plurality of the middle support bodies are arranged in an array; a floor slab assembly, including a support layer covering the outside of the support bottom plate, a vibration reduction layer disposed on the support layer, and an upper top layer disposed on the vibration reduction layer; and a vibration reduction assembly, the vibration reduction assembly is disposed between the upper top layer and the vibration reduction layer.

[0008] As a preferred embodiment of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention, wherein: the middle support body includes a first support rod connected to the support bottom plate and a second support rod connected to the support bottom plate, the upper ends of the first support rod and the second support rod are connected, and a triangular frame is formed in a plane perpendicular to the surface of the support bottom plate, and the first support rod and the second support rod have the same size.

[0009] As a preferred embodiment of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention, wherein: the middle support body includes a first inclined support connected to the support bottom plate, a second inclined support connected to the support bottom plate, and a top rod connecting the upper ends of the first inclined support and the second inclined support, and the upper ends of the first inclined support and the second inclined support extend to the upper top layer.

[0010] As a preferred embodiment of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention, wherein: a connecting block is disposed between the first support rod and the adjacent second support rod, a connecting rib is disposed on the connecting block, and the connecting rib is connected to the connecting blocks of the adjacent middle support bodies;

[0011] The upper ends of the first support rod and the second support rod are connected to the vibration reduction assembly.

[0012] As a preferred embodiment of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention, wherein: the vibration reduction assembly includes an intermediate block disposed at the upper ends of the first support rod and the second support rod, a steel wire mesh body connected to the intermediate block, and filling spheres disposed on the steel wire mesh body, and an adhesion layer is provided between the filling spheres and the steel wire mesh body.

[0013] As a preferred embodiment of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention, wherein: the upper ends of the first support rod and the second support rod extend to the upper top layer, and the lower ends of the first support rod and the second support rod extend to the support layer.

[0014] The present invention also discloses a method for pouring a vibration and noise reduction type lightweight steel bar truss composite floor slab, including,

[0015] Binding the support bottom plate and the middle support member, and pouring the support layer to form a precast bottom plate;

[0016] Pour a damping layer on the precast floor slab;

[0017] Weld the steel mesh body to the middle block and install high-damping rubber balls to form the middle layer of the floor slab;

[0018] Pour cement mortar on the damping layer.

[0019] As a preferred scheme of the pouring method of the damping and noise-reducing lightweight steel bar truss composite floor slab described in the present invention, wherein: the support layer is a concrete layer, the damping layer is a foam concrete layer, and the upper top layer is cement mortar.

[0020] As a preferred scheme of the pouring method of the damping and noise-reducing lightweight steel bar truss composite floor slab described in the present invention, wherein: apply an adhesive liquid in the mesh holes of the steel mesh body to bond the high-damping rubber balls.

[0021] As a preferred scheme of the pouring method of the damping and noise-reducing lightweight steel bar truss composite floor slab described in the present invention, wherein: the thickness of the damping layer 202 is 40mm - 60mm.

[0022] The beneficial effects of the present invention: The middle support body and the steel mesh body form the force-bearing skeleton of the entire floor slab through welding, effectively protecting the foam concrete in the middle layer while supporting the floor slab, meeting the force and bearing requirements. Moreover, the middle layer of foam concrete can greatly reduce the self-weight of the floor slab and has good damping and noise-reducing performance. The damping components at the top can not only limit the propagation of vibrations within the stopband frequency range in the structure, but also dissipate a part of the energy, and also have good damping effects.

[0023] When vibrations propagate to the floor slab, the concrete dissipates a part of the energy through vibration. After the elastic wave propagates into the middle layer, due to the interconnected pores inside the material, the air molecules are subjected to friction and viscous resistance, causing the air to vibrate, thereby converting sound into mechanical energy, and finally being converted into heat energy due to friction and absorbed. Therefore, it has strong damping and noise-reducing effects. The damping component structure at the top layer has a stopband characteristic, and vibrations within the stopband frequency range cannot propagate in the structure. At the same time, the high-damping rubber balls can also dissipate a part of the energy during vibration, playing a damping role. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0025] Figure 1Schematic cross-sectional view of the overall structure of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0026] Figure 2 Schematic three-dimensional view of the overall structure of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0027] Figure 3 Schematic view of the internal support structure of the floor slab of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0028] Figure 4 Bottom view of the connection between the middle support body and the vibration damping component of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0029] Figure 5 Schematic view of the middle support body in Embodiment 3 of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0030] Figure 6 Schematic view of the installation component in Embodiment 4 of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0031] Figure 7 For the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention Figure 6 Enlarged schematic view of part A.

[0032] Figure 8 Schematic cross-sectional view of the intermediate body structure of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0033] Figure 9 Schematic view of the clamping component structure in Embodiment 4 of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0034] Figure 10 Schematic cross-sectional view of the clamping component structure in Embodiment 4 of the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention.

[0035] Figure 11 For the vibration and noise reduction type lightweight steel bar truss composite floor slab of the present invention Figure 10 Enlarged schematic view of part B. Detailed implementation manners

[0036] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0037] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways than those specifically described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other from other embodiments.

[0039] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views showing the device structure are enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included. Embodiment

[0040] Referring to Figures 1-4 , the present invention discloses a vibration and noise reduction type lightweight steel bar truss composite floor slab, including a support assembly 100. In this embodiment, the support assembly 100 includes a support bottom plate 101. The overall structure of the support bottom plate 101 is formed by welding a number of mutually parallel steel bars, and the support bottom plate 101 as a whole presents a horizontal state. A middle support body 102 is further provided on the support bottom plate 101. The middle support body 102 serves as the main internal skeleton of the entire composite floor slab and plays a role in overall support of the floor slab. Among them, several groups of middle support bodies 102 are provided, and they are correspondingly arranged along the length direction of each steel bar of the support bottom plate 101. Furthermore, several groups of middle support bodies 102 are mutually parallel and arranged in an array.

[0041] Furthermore, the present invention also includes a floor slab assembly 200. In this embodiment, the floor slab assembly 200 includes a support layer 201 covering the outside of the support bottom plate 101. The support layer 201 is mainly concrete, and the support bottom plate 101 is covered with concrete. The support bottom plate 101 and the concrete jointly form a precast bottom plate, which serves as the main load-bearing component of the entire composite floor slab. After pouring the concrete, the support bottom plate 101 is kept at the central position of the concrete layer, and the concrete can cover the welding position between the middle support body 102 and the support bottom plate 101 and extend upward along the middle support body 102, and the extended covering thickness is the same as the thickness between the bottom surface of the concrete layer and the support bottom plate 101.

[0042] Further, a damping layer 202 is also provided on the support layer 201. The damping layer 202 includes a lightweight porous material coated on the concrete. In this embodiment, the lightweight porous material is selected as foamed concrete, which then covers the middle support body 102, and the filling thickness of the foamed concrete is consistent with the pouring thickness of the concrete.

[0043] The concrete of the damping layer 202 is selected as porous lightweight concrete with a thickness of 40 mm - 60 mm. Selecting the above concrete can greatly improve the disadvantage of excessive self-weight of the floor slab. And because such concrete has more pores, when elastic waves propagate into the intermediate layer, due to the interconnected pores inside the material, air molecules are subjected to friction and viscous resistance, causing the air to vibrate, so that kinetic energy is converted into mechanical energy, and finally converted into heat energy due to friction and absorbed. Therefore, the structure has a strong damping and noise reduction effect.

[0044] Further, a top layer 203 is also coated on the damping layer 202. In this embodiment, the top layer 203 is coated with high-strength cement mortar to provide the strength of the upper layer of the floor slab.

[0045] Further, the present invention also includes a damping assembly 300. The damping assembly 300 is arranged between the top layer 203 and the damping layer 202. In this embodiment, the damping assembly 300 includes an intermediate block 301 arranged at the upper end of the middle support body 102. The intermediate block 301 is a welding node on the middle support body 102 in this embodiment, and the surface of the welding node is set as a plane. Then, the intermediate blocks 301 are arranged in an array on the middle support block; a steel mesh body 302 is arranged on several intermediate blocks 301. The steel mesh body 302 is connected to several intermediate blocks 301 together. The steel mesh body 302 itself has several reserved holes, and a filling sphere 303 is arranged in each hole of the steel mesh body 302. A bonding layer is provided between the filling sphere 303 and the steel mesh body 302 to connect the filling sphere 303 and the steel mesh body 302 by using the bonding layer.

[0046] Preferably, in this embodiment, the filling sphere 303 is selected as a high-damping rubber ball. The high-damping rubber ball and the upper cement mortar form a periodic composite structure, which has a bandgap characteristic. Vibration within the bandgap frequency range cannot propagate in the structure. At the same time, the high-damping rubber ball can also play a damping effect, making the structure have good damping performance.

[0047] The specific implementation principle of this embodiment: The middle support body 102 and the steel mesh body 302 are welded to form the force-bearing skeleton of the entire floor slab, protecting the foamed concrete in the middle layer effectively while supporting the floor slab, meeting the force and bearing requirements. And the middle layer of foamed concrete can greatly reduce the self-weight of the floor slab and has good damping and noise reduction performance.

[0048] When the vibration propagates to the floor slab, the concrete dissipates part of the energy through vibration. After the elastic wave propagates into the intermediate layer, due to the interconnected pores inside the material, the air molecules are subjected to friction and viscous resistance, causing the air to vibrate, thus converting sound into mechanical energy, and finally being converted into heat energy due to friction and absorbed. Therefore, it has a strong vibration reduction and noise reduction effect. The vibration reduction component 300 structure on the top layer has a bandgap characteristic, and the vibration within the bandgap frequency range cannot propagate in the structure. At the same time, the high-damping rubber balls can also dissipate part of the energy during vibration, achieving a vibration reduction effect. Embodiment

[0049] Refer to Figures 1-4 , what is different about this embodiment from the first embodiment is that in this embodiment, the middle support body 102 of each group includes a first support rod 102a connected to the support bottom plate 101. The first support rod 102a is inclined. There are several first support rods 102a, and they are arranged in parallel. One end extends into the topmost layer 203 and the other end extends into the support layer 201, and the inclination angle is between 59° and 61°. In this embodiment, the inclination angle is selected as 60°. A second support rod 102b is also provided on the support bottom plate 101. The number of the second support rods 102b corresponds to the number of the first support rods 102a. The upper ends of the first support rod 102a and the second support rod 102b are connected. And in this embodiment, the inclination angle of the second support rod 102b is also between 59° and 61°. In this embodiment, the inclination angle is also selected as 60°.

[0050] Preferably, the first support rod 102a, the second support rod 102b and the support bottom plate 101 form an equilateral triangle and always remain in the direction perpendicular to the surface of the support bottom plate 101, and are sequentially connected in the structural state of the formed equilateral triangle. In two adjacent equilateral triangle structures, the second support rod 102b on one side is welded to the lower end of the first support rod 102a in another equilateral triangle structure, thereby jointly forming the specific structure of the middle support body 102.

[0051] Furthermore, a connecting block 204 is provided between the first support rod 102a and the adjacent second support rod 102b. A connecting rib rod 205 is provided on the connecting block 204. The connecting rib rod 205 is connected to the connecting block 204 of the adjacent middle support body 102, thereby connecting several mutually parallel middle support bodies 102 and ensuring the support strength in the horizontal direction.

[0052] Preferably, in this embodiment, the first support rod 102a and the second support rod 102b have the same dimensions, making the overall stability of the formed equilateral triangle structure higher. Moreover, the upper ends of the first support rod 102a and the second support rod 102b extend to the topmost layer 203, and the lower ends of the first support rod 102a and the second support rod 102b extend to the support layer 201.

[0053] The remaining structures are the same as those in Embodiment 1.

[0054] The specific implementation principle of this embodiment: The first support rod 102a and the second support rod 102b can be welded to form; after arranging the steel bar truss, the bottom plate concrete is poured. After pouring, the steel bar truss and the bottom plate serve as the main load-bearing components of the structure, ensuring the strength and load-bearing capacity of this floor slab. Embodiment

[0055] Referring to Figure 5 , what is different about this embodiment from the first embodiment is that in this embodiment, the middle support 102 includes a first inclined bracket 102c connected to the support bottom plate 101 and a second inclined bracket 102d connected to the support bottom plate 101. The first inclined bracket 102c is provided with a plurality of groups and is arranged in parallel with each other, while the second inclined bracket 102d is also provided with a plurality of groups and also maintains a parallel arrangement state.

[0056] A top rod 102e is connected to the upper ends of the first inclined bracket 102c and the second inclined bracket 102d. The top rod 102e is arranged horizontally, and the upper ends of the first inclined bracket 102c and the second inclined bracket 102d extend to the topmost layer 203.

[0057] The remaining structures are the same as those in Embodiment 1.

[0058] The specific implementation principle of this embodiment: The first inclined bracket 102c, the second inclined bracket 102d and the top rod 102e can be welded to form, and the first inclined bracket 102c, the second inclined bracket 102d and the top rod 102e together form a trapezoid-like shape. The lengths of the first inclined bracket 102c and the second inclined bracket 102d are kept the same in this embodiment. Furthermore, this setting can further enhance the support effect in the upper middle part of the entire floor slab, making the support for the vibration damping component 300 stable. Embodiment

[0059] Referring to Figures 6-11, what is different about this embodiment from the first embodiment is that: in this embodiment, the installation component 400 includes an installation block 401 disposed on the support bottom plate 101. An inclined surface 404 is formed at the upper end of the installation block 401, and the inclined angle of the inclined surface 404 is perpendicular to the inclined angles of the first support rod 102a or the second support rod 102b. An installation cavity 402 is formed inside the installation block 401. At the same time, installation holes 403 are formed on the inclined surface 404 of the installation block 401 corresponding to the adjacent first support rod 102a and second support rod 102b. There are two installation holes 403, and they are symmetrically arranged. The ends of the two installation holes 403 are both communicated with the installation cavity 402.

[0060] Furthermore, an intermediate block 405 is disposed inside the installation cavity 402. An inclined surface with the same inclined angle as the inclined surface 404 is also formed at the upper end of the intermediate block 405. At the same time, the lower end of the intermediate block 405 always abuts against the side wall of the installation cavity 402. In order to maintain the stability of the installation, a number of support short rods 406 are disposed between the lower bottom surfaces of the installation cavity 402 and the intermediate block 405. The support short rods 406 are inserted into the intermediate block 405. A number of mating holes for cooperating with the support short rods 406 are formed in the lower bottom surface of the intermediate block 405. After the support short rods 406 are inserted into the mating holes, stable support for the intermediate block 405 is achieved.

[0061] Furthermore, a receiving cylinder 407 is slidably connected in each installation hole 403. An installation groove 408 for cooperating with the first support rod 102a or the second support rod 102b is formed on the receiving cylinder 407. A snap ring 408a is disposed in each installation groove 408. The material of the snap ring 408a is hard rubber. In order to achieve stable installation, mating ring grooves 408b for cooperating with the snap ring 408a are formed at the lower ends of the first support rod 102a and the second support rod 102b. Thus, when the first support rod 102a or the second support rod 102b cooperates with the installation groove 408, the mating ring groove 408b cooperates with the snap ring 408a to achieve the installation and fixation of the first support rod 102a or the second support rod 102b.

[0062] In order to seal the installation hole 403, a sealing layer 409 is disposed between the receiving cylinder 407 and the installation hole 403. The specific material of the sealing layer 409 is hard rubber in this embodiment, thereby preventing damage to the internal structure caused by cement entering the installation hole 403 during the later casting and sealing process.

[0063] Preferably, a sliding block 409a is disposed on the side wall of the installation cylinder, and a mating sliding groove for cooperating with the sliding block 409a is formed on the side wall of the installation hole 403, so that the sliding block 409a can slide along the length direction of the installation hole 403.

[0064] Further, a buffer member 500 is provided between the intermediate block 405 and the receiving cylinder 407. In this embodiment, the buffer member 500 includes a starting rod 501 connected to the bottom surface of the receiving cylinder 407. The diameter of the starting rod 501 is one-third of the diameter of the receiving cylinder 407. Thus, the starting rod 501 can slide together with the receiving cylinder 407.

[0065] In this embodiment, the sealing layer 409 and the receiving cylinder 407 are installed by welding or bolts, and the sealing layer 409 and the mounting hole 403 are also installed by bolts. A rigid iron ring is provided at the edge position of the sealing layer 409, and the iron ring is covered inside the sealing layer 409. Thus, bolt holes are provided in the sealing layer 409 and the iron ring, and the operator uses bolts for installation.

[0066] Further, a buffer cylinder 502 is also fixed on the intermediate block 405. A buffer liquid is provided in the buffer cylinder 502. The length direction of the buffer cylinder 502 is the same as the length direction of the receiving cylinder 407. At the same time, a buffer plate 503 is slidably connected in the buffer cylinder 502. A number of through holes 504 are provided in the buffer plate 503. When the buffer plate 503 slides in the buffer cylinder 502, the sliding speed of the buffer plate 503 will be slowed down due to the presence of the buffer liquid. A buffer rod 505 is provided on the buffer plate 503. The buffer rod 505 extends out of the buffer cylinder 502, and a central rod 506 is provided at the center position of the upper end of the buffer rod 505. The central rod 506 is used to dock with the starting rod 501. Thus, a card slot 507 cooperating with the central rod 506 is provided at the lower end of the starting rod 501.

[0067] Preferably, a mating notch cooperating with the buffer rod 505 is provided at the upper end of the buffer cylinder 502, and the mating notch is always in contact with the buffer rod 505. Thus, it is prevented that the buffer liquid flows out of the buffer cylinder 502 when the buffer rod 505 slides.

[0068] Further, a clamping member 600 is provided at the upper end of the buffer rod 505. In this embodiment, the clamping member 600 includes an intermediate ring 601 provided at the upper end of the buffer rod 505. A number of mounting rings 602 are provided on the intermediate ring 601. In this embodiment, 6 mounting rings 602 are provided. A clamping rod 603 is provided between every two adjacent mounting rings 602. Both ends of the clamping rod 603 are connected to the mounting rings 602. The center position of the clamping rod 603 is formed into an arc shape. A gear 604 is provided on one of the mounting rings 602. Thus, when one of the mounting rings 602 rotates, it will drive the adjacent mounting rings 602 to rotate synchronously by the driving action of the clamping rod 603, so as to drive a number of clamping rods 603 to rotate inward or outward together.

[0069] Further, a rack 605 is provided at the lower end of the starting rod 501. The rack 605 is arranged vertically. After the starting rod 501 moves downward, it will engage with the gear 604, thereby driving the rotation of the gear 604. At the same time, a number of clamping holes are provided on the side wall of the gear 604. A clamping bar is provided at the uppermost end of the rack 605, and a protruding portion cooperating with the clamping hole is provided at the end of the clamping bar. When the rack 605 moves to the lowermost end, the protruding portion will clamp the clamping hole on the gear 604, playing a fixing role.

[0070] Preferably, in order to ensure the docking between the starting rod 501 and the intermediate rod, in the initial state, the buffer plate 503 remains at the uppermost position closest to the buffer cylinder 502. Then, a number of closing plug plates 606 are provided on the inner surface of the top wall of the buffer cylinder 502. The number of the closing plug plates 606 is the same as that of the through holes 504 and corresponds to each other. And in the initial state (when the starting rod 501 does not move downward to be connected with the intermediate rod), the closing plug plate 606 is connected to the through hole 504. A hard rubber ring 607 is provided on the side wall of the closing plug plate 606. An annular groove is provided on the hard rubber ring 607. A rubber protrusion 608 cooperating with the annular groove is provided on the hole wall of the through hole 504. A rubber connecting strip is provided between the rubber protrusion 608 and the hard rubber ring 607. When the buffer moves downward, the rubber connecting strip will break, so as to realize the separation from the closing plug plate 606 and thus enter the working state.

[0071] The rest of the structure is the same as that of Embodiment 1.

[0072] Operation process: When the operator installs the first support rod 102a (taking the first support rod 102a as an example, the second support rod 102b is the same as the following operation process), the operator aligns the first support rod 102a with the installation cylinder and inserts it downward. By the downward installation action of the first support rod 102a, first, the annular groove on the first support rod 102a is correspondingly clamped with the snap ring 408a of the installation cylinder, realizing the installation of the first support rod 102a and the installation cylinder. The downward movement of the first support rod 102a will drive the downward movement of the installation cylinder, making the starting rod 501 at the lower end of the installation cylinder move, so that the rack 605 slides downward, driving the rotation of the gear 604, thereby making a number of installation rings 602 rotate, making the clamping rod 603 clamp the starting rod 501, realizing the connection between the starting rod 501 and the buffer rod 505, and thus driving the unlocking of the buffer plate 503. At this time, the buffer plate 503 enters the working state. When an external force acts on the first support rod 102a or the floor slab, it will cause a slight displacement of the first support rod 102a. At this time, it will drive the sliding of the buffer plate 503, and the displacement of the buffer plate 503 will be slowed down due to the presence of the buffer liquid, thereby buffering and slowing down the external force received. Embodiment

[0073] The present invention also discloses a casting method for a vibration damping and noise reduction type lightweight steel bar truss composite floor slab, including:

[0074] Bind the support bottom plate 101 with the middle support member, and cast the support layer 201 to form a precast bottom plate;

[0075] Cast the vibration damping layer 202 on the precast bottom plate;

[0076] Weld the steel bar mesh body 302 with the middle block 301, apply an adhesive liquid in the mesh holes of the steel bar mesh body 302, and bond the high-damping rubber balls to form the middle layer of the floor slab;

[0077] Cast cement mortar on the vibration damping layer 202.

[0078] Bind the support bottom plate 101 with the middle support member, and cast the support layer 201 to form a precast bottom plate; cast foam concrete on the precast bottom plate to form the middle layer, and cast the lower chord bars of the middle support body 102 in ordinary concrete. The abdominal bars of the middle support body 102 are wrapped with concrete, which is ordinary concrete and foam concrete from bottom to top; the steel bar truss is welded with the steel bar mesh to form the entire steel bar skeleton of the floor slab. The high-damping rubber balls are connected to the steel bar mesh through the adhesive liquid, and high-strength cement mortar is cast on the upper part to form the top layer.

[0079] In the above steps, during the casting process, pay attention to the vibration and compaction of the concrete, and whether the position of the middle support body 102 changes. The precast bottom plate formed in this way can not only meet the requirements of strength and bearing capacity, but also has the advantages of fast construction and shortened construction period; then cast foam concrete on the precast bottom plate, and then connect the steel bar mesh body 302 with the longitudinal steel bars of the middle support body 102 by welding to form the middle layer of the floor slab structure, which not only ensures the overall bearing capacity of the structure, but also has the advantage of light weight.

[0080] Since the cast is foam concrete, it also has good vibration damping and noise reduction performance, heat insulation performance and fluidity. Moreover, the foam concrete can be transported by pumping during construction, which also has the advantage of convenient transportation and construction; then connect the high-damping rubber balls with the steel bar mesh with the adhesive liquid, and finally cast high-strength cement mortar, so that the high-damping rubber balls and the upper cement mortar form a periodic composite structure, which has a bandgap characteristic. The vibration within the bandgap frequency range cannot propagate in the structure. At the same time, the high-damping rubber balls can also play a vibration damping effect, making the structure have good vibration damping performance.

[0081] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0082] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention or those features that are not relevant to the implementation of the present invention).

[0083] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, fabrication and production.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A vibration and noise reduction type lightweight steel bar truss composite floor slab, characterized in that: including a support assembly (100), comprising a support base plate (101) and a middle support body (102) disposed on the support base plate (101), a plurality of the middle support bodies (102) being arranged in an array, the middle support body (102) including a first support rod (102a) connected to the support base plate (101) and a second support rod (102b) connected to the support base plate (101), the upper ends of the first support rod (102a) and the second support rod (102b) being connected and forming a triangular frame within a plane perpendicular to the surface of the support base plate (101), and the first support rod (102a) and the second support rod (102b) having the same dimensions; a floor slab assembly (200), comprising a support layer (201) covering the outside of the support base plate (101), a vibration damping layer (202) disposed on the support layer (201), and an upper top layer (203) disposed on the vibration damping layer (202); and, a vibration damping assembly (300), the vibration damping assembly (300) being disposed between the upper top layer (203) and the vibration damping layer (202), the vibration damping assembly (300) including an intermediate block (301) disposed at the upper ends of the first support rod (102a) and the second support rod (102b), a steel mesh body (302) connected to the intermediate block (301), and filling spheres (303) disposed on the steel mesh body (302), an adhesive layer being provided between the filling spheres (303) and the steel mesh body (302).

2. The vibration damping and noise reduction type lightweight steel bar truss composite floor slab according to claim 1, wherein: The middle support body (102) includes a first inclined bracket (102c) connected to the support base plate (101), a second inclined bracket (102d) connected to the support base plate (101), and a top rod (102e) connecting the upper ends of the first inclined bracket (102c) and the second inclined bracket (102d), the upper ends of the first inclined bracket (102c) and the second inclined bracket (102d) extending to the upper top layer (203).

3. The vibration and noise reduction type lightweight steel bar truss composite floor slab according to claim 2, wherein: A connection block (204) is disposed between the first support rod (102a) and an adjacent second support rod (102b), a connection rib rod (205) is disposed on the connection block (204), and the connection rib rod (205) is connected to the connection block (204) of an adjacent middle support body (102); The upper ends of the first support rod (102a) and the second support rod (102b) are connected to the vibration damping assembly (300).

4. The vibration damping and noise reduction type lightweight steel bar truss composite floor slab according to claim 3, characterized in that: The upper ends of the first support rod (102a) and the second support rod (102b) extend to the upper top layer (203), and the lower ends of the first support rod (102a) and the second support rod (102b) extend to the support layer (201).

5. A casting method for a vibration and noise reduction type lightweight steel bar truss composite floor slab according to any one of claims 1 to 4, characterized in that: including tying the support base plate (101) and the middle support body (102), and pouring the support layer (201) to form a precast base plate; pouring the vibration damping layer (202) on the precast base plate; welding the steel mesh body (302) and the middle support body (102), and installing the filling spheres (303) to form an intermediate floor slab layer; pouring cement mortar on the vibration damping layer (202).

6. The casting method of the vibration damping and noise reduction type lightweight steel bar truss composite floor slab according to claim 5, characterized in that: The support layer (201) is a concrete layer, the vibration damping layer (202) is a foam concrete layer, and the upper top layer (203) is cement mortar.

7. The casting method of the vibration damping and noise reduction type lightweight steel bar truss composite floor slab according to claim 6, characterized in that: Apply an adhesive liquid in the mesh holes of the steel bar mesh body (302) to bond the filling spheres (303).

8. The casting method of the vibration damping and noise reduction type lightweight steel bar truss composite floor slab according to claim 7, wherein: The thickness of the vibration damping layer (202) is 40 mm - 60 mm.

Images