Vibration reduction floor

Abstract

The invention discloses a vibration reduction floor, and relates to the technical field of vibration reduction equipment, the vibration reduction floor is applied to a building, the vibration reduction floor comprises a vibration reduction cushion layer and an upper floor, the vibration reduction cushion layer comprises a first cushion layer and a second cushion layer, the first cushion layer is horizontally laid on a floor of the building, and the second cushion layer is laid along the edge of the bottom of a wall of the building; the second cushion layer is connected with the first cushion layer, and a first area is defined by the first cushion layer and the second cushion layer; the upper floor comprises a concrete layer and floor tiles, and the concrete layer is laid in the first area; the floor tiles are laid on the concrete layer, and the floor tiles are located in the first area; the overall resonance frequency of the anti-vibration cushion layer and the upper floor is smaller than or equal to 30 Hz. The upper floor is laid in the first area of the anti-vibration cushion layer to provide vibration reduction for the upper floor, and due to the fact that the overall resonance frequency of the anti-vibration cushion layer and the upper floor is smaller than or equal to 30 Hz, indoor vibration of sensitive buildings caused by vibration of urban rail transit can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction equipment, and in particular to a vibration reduction floor. Background Art

[0002] At present, the main method for vibration reduction of urban rail transit is to take measures on the track bed, sleepers, and deductions, most of which are source vibration reduction. However, for the urban rail transit that has been in operation, the source vibration reduction method requires the line to be shut down or the construction period, cost, and construction difficulty to increase. Therefore, a single source vibration reduction measure can no longer meet the vibration reduction needs of the subway. The combination of vibration reduction measures such as "source-transmission path-building protection" has become an important direction of research on subway vibration reduction measures at this stage. Among them, vibration reduction floor is one of the building protection measures.

[0003] Vibration-damping floors are mainly laid between the floor slab and the floor using elastic vibration-damping pads or vibration-damping elements to reduce vibration. The vibration frequency range of urban rail transit vibrations transmitted to buildings is mainly concentrated in the range of 40-80Hz, with low-frequency vibrations being the main type. The vibration-damping floors currently laid using vibration-damping pads cannot meet the purpose of reducing vibrations in urban rail transit because the design of the elastic pads does not take 40-80Hz vibrations into account.

[0004] Therefore, there is an urgent need for a new type of vibration-damping floor to solve the problem that the vibration-damping floor laid in the form of a vibration-damping cushion cannot reduce the impact of urban rail transit vibration on the interior of the building. Summary of the invention

[0005] The main purpose of the present invention is to provide a vibration-damping floor, which aims to solve the problem that the vibration-damping floor laid in the form of a vibration-damping cushion layer cannot reduce the impact of urban rail transit vibration on the interior of the building.

[0006] To achieve the above-mentioned purpose, the vibration-damping floor proposed in the present invention is applied to a building, the vibration-damping floor includes a vibration-damping pad and an upper floor, the vibration-damping pad includes a first pad and a second pad, the first pad is horizontally laid on the floor slab of the building, the second pad is laid along the bottom edge of the wall of the building, the second pad is connected to the first pad, and the first pad and the second pad enclose a first area; the upper floor includes a concrete layer and floor tiles, the concrete layer is laid in the first area; the floor tiles are laid above the concrete layer, and the floor tiles are located in the first area; the overall resonance frequency of the vibration-damping pad and the upper floor is less than or equal to 30 Hz.

[0007] In one embodiment, the overall resonance frequency of the vibration damping pad and the upper floor is less than or equal to 28 Hz.

[0008] In one embodiment, the top of the floor tile is flush with the top of the second cushion layer, or the top of the floor tile is lower than the top of the second cushion layer.

[0009] In one embodiment, the first cushion layer includes a first vibration damper and a second vibration damper, the elastic modulus of the second vibration damper is smaller than the elastic modulus of the first vibration damper; and the first vibration damper is connected to the second vibration damper.

[0010] In one embodiment, the first vibration damper is divided into a plurality of vibration damper sub-blocks, the horizontal areas of the plurality of vibration damper sub-blocks are uneven but the thickness is consistent, and the plurality of vibration damper sub-blocks are distributed on the floor slab of the building; the second vibration damper is provided with a plurality of notches corresponding to the plurality of vibration damper sub-blocks, and the plurality of vibration damper sub-blocks are filled in the plurality of notches accordingly.

[0011] In one embodiment, the first cushion layer further includes a third vibration damper, the elastic modulus of the third vibration damper is smaller than the elastic modulus of the second vibration damper; and the second vibration damper is connected to the third vibration damper.

[0012] In one embodiment, a first groove is provided on the top of the first vibration damper, and the second vibration damper is accommodated in the first groove. A second groove is provided on the top of the second vibration damper, and the third vibration damper is accommodated in the second groove. The tops of the first vibration damper, the second vibration damper, and the third vibration damper are flush.

[0013] In one embodiment, a steel plate is laid between the vibration-damping pad and the upper floor.

[0014] In one embodiment, the concrete layer is configured as reinforced cement concrete, wherein mesh steel bars are provided in the reinforced cement concrete.

[0015] In one embodiment, an isolation membrane is laid between the vibration-damping pad layer and the concrete layer.

[0016] The technical solution of the present invention adopts a vibration-damping floor, which is applied to a building. The vibration-damping floor includes a vibration-damping pad and an upper floor. The vibration-damping pad includes a first pad and a second pad. The first pad is horizontally laid on the floor slab of the building, and the second pad is laid along the bottom edge of the wall of the building. The second pad is connected to the first pad, and the first pad and the second pad enclose a first area; the upper floor includes a concrete layer and floor tiles, and the concrete layer is laid in the first area; the floor tiles are laid above the concrete layer, and the floor tiles are located in the first area; the overall resonance frequency of the vibration-damping pad and the upper floor is less than or equal to 30 Hz.

[0017] The technical solution of the present invention adopts the first cushion layer and the second cushion layer of the vibration-damping cushion layer to enclose the first area, and lays the concrete layer and floor tiles of the upper floor in the first area, so as to use the vibration-damping cushion layer to provide vibration reduction for the upper floor tiles; and the presence of the concrete layer and floor tiles in the upper floor can provide a solid and stable support for the indoor of the ground building. In addition, it has been found through experiments that the lowest vibration reduction frequency that can be achieved by the vibration-damping floor is 1.4 times the resonance frequency of the vibration-damping floor. Therefore, the present invention also sets the overall resonance frequency of the vibration-damping cushion layer and the upper floor to be less than or equal to 30Hz, so that the overall lowest vibration reduction frequency of the vibration-damping cushion layer and the upper floor can reach 42Hz, which can cover most of the frequency range of 40-80Hz, thereby improving the vibration reduction effect of the vibration-damping floor on low-frequency oscillations, thereby effectively reducing the impact of urban rail transit vibration on the indoor of the building.

[0018] In general, the vibration-damping floor of the present invention improves the vibration-damping effect of the vibration-damping floor on low-frequency vibrations while ensuring the stability of the floor structure, and effectively reduces the impact of urban rail transit vibration on the interior of buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a first embodiment of a vibration-damping floor provided by the present invention;

[0021] Figure 2 A system function model diagram of the first embodiment of the vibration-damping floor provided by the present invention;

[0022] Figure 3 A schematic structural diagram of a second embodiment of a vibration-damping floor provided by the present invention;

[0023] Figure 4 A plan distribution diagram of a second embodiment of the vibration-damping floor provided by the present invention;

[0024] Figure 5 This is a schematic structural diagram of the third embodiment of the vibration-damping floor provided by the present invention.

[0025] Description of Figure Numbers:

[0026] 1. Vibration-damping floor; 11. Vibration-damping cushion layer; 111. First cushion layer; 1111. First vibration-damping body; 1111a. Vibration-damping sub-block; 1112. Second vibration-damping body; 1113. Third vibration-damping body; 112. Second cushion layer; 12. Upper floor;

[0027] 2. Building; 21. Floor; 22. Wall.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] 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.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] At present, the main method for vibration reduction of urban rail transit is to take measures on the track bed, sleepers, and deductions, most of which are source vibration reduction. However, for urban rail transit that is already in operation, the source vibration reduction method requires the line to be shut down or the construction period, cost, and construction difficulty to increase. Therefore, a single source vibration reduction measure can no longer meet the vibration reduction needs of the subway. The combination of vibration reduction measures such as "source-transmission path-building protection" has become an important direction for the current research on subway vibration reduction measures. Among them, vibration reduction floors are one of the building protection measures. The following are the current methods of vibration reduction floors.

[0033] At present, common vibration-damping floors use vibration-damping pads to reduce vibration. Among them, a stacked vibration-damping floor was invented to solve the poor vibration-damping effect of a single-layer vibration-damping pad. The vibration-damping floor consists of a floor unit composed of four floor layers and a vibration-damping unit composed of four 3-layer vibration-damping layers. The adjacent two floor layers in the floor unit are bonded and fixed by wood floor glue, and the adjacent vibration-damping layers in the vibration-damping unit are bonded and fixed by wood floor glue. The vibration-damping layer consists of three layers: an ACF layer, a foamed polyurethane layer, and an elastic polyurethane layer. The vibration-damping floor achieves the vibration-damping effect mainly through the different effects of different vibration-damping layers. Among them: the ACF layer is used to absorb small vibrations; the foamed polyurethane layer is used to assist in absorbing small vibrations and impact forces and absorb large vibrations; the elastic polyurethane layer is responsible for absorbing and buffering impact forces.

[0034] Another vibration reduction method is to reduce vibration by laying vibration-damping elements under the floor. Among them, a vibration-damping element is invented to solve the limited vibration reduction effect caused by the method of setting a vibration-damping pad at the bottom of the floor. The vibration-damping element is made of a material with elastic deformation function, including a connecting plate, an external vibration-damping body, and an internal vibration-damping body. The vertical cross-section of the vibration-damping element formed by the connecting plate, the external vibration-damping body, the internal vibration-damping body, and the upper and lower circular holes is a W-shaped structure. The vibration-damping element is designed with a W-shaped structure in the vertical cross-section, and a better vibration reduction effect is achieved through the uniform arrangement of a number of vibration-damping elements and the material with elastic deformation function.

[0035] In summary, vibration-damping floors mainly achieve the purpose of reducing vibration by laying elastic vibration-damping pads or vibration-damping elements between the floor slab and the floor. The vibration frequency range of urban rail transit vibration transmitted to the building is mainly concentrated in 40-80Hz, with low-frequency vibration being the main type. The vibration-damping floors currently laid with vibration-damping pads cannot meet the purpose of reducing vibration in urban rail transit because the design of the elastic pads does not take 40-80Hz vibration into account.

[0036] Therefore, there is an urgent need for a new type of vibration-damping floor to solve the problem that the vibration-damping floor laid in the form of a vibration-damping cushion cannot reduce the impact of urban rail transit vibration on the interior of the building.

[0037] In order to solve the above problems, the present invention provides a vibration-damping floor.

[0038] See also Figure 1 In one embodiment of the present invention, the vibration-damping floor 1 is applied to a building 2, the vibration-damping floor 1 includes a vibration-damping pad 11 and an upper floor 12, the vibration-damping pad 11 includes a first pad 111 and a second pad 112, the first pad 111 is horizontally laid on the floor 21 of the building 2, the second pad 112 is laid along the bottom edge of the wall 22 of the building 2, the second pad 112 is connected to the first pad 111, and the first pad 111 and the second pad 112 enclose a first area; the upper floor 12 includes a concrete layer 121 and floor tiles 122, the concrete layer is laid in the first area; the floor tiles are laid above the concrete layer, and the floor tiles are located in the first area; the overall resonance frequency of the vibration-damping pad 11 and the upper floor 12 is less than or equal to 30 Hz.

[0039] The technical solution of the present invention adopts the first cushion layer 111 and the second cushion layer 112 of the vibration-damping cushion layer 11 to enclose the first area, and lays the concrete layer and floor tiles of the upper floor 12 in the first area, so that the vibration-damping cushion layer 11 is used to provide vibration reduction for the upper floor tiles; and the presence of the concrete layer and floor tiles in the upper floor 12 can provide a solid and stable support for the indoor of the ground building 2. In addition, it is found through experiments that the lowest vibration reduction frequency that can be achieved by the vibration-damping floor 1 is 1.4 times the resonance frequency of the vibration-damping floor 1. Therefore, the present invention also sets the overall resonance frequency of the vibration-damping cushion layer 11 and the upper floor 12 to be less than or equal to 30Hz, so that the overall lowest vibration reduction frequency of the vibration-damping cushion layer 11 and the upper floor 12 can reach 42Hz, which can cover most of the frequency range of 40-80Hz, thereby improving the vibration reduction effect of the vibration-damping floor 1 on low-frequency oscillations, thereby achieving the effect of effectively reducing the impact of urban rail transit vibration on the indoor of the building 2.

[0040] In general, the vibration-damping floor 1 of the present invention improves the vibration-damping effect of the vibration-damping floor 1 on low-frequency vibrations while ensuring the stability of the floor structure, and effectively reduces the impact of urban rail transit vibration on the interior of the building 2.

[0041] It should be noted that the overall resonance frequency of the vibration-damping pad 11 and the upper floor 12, that is, the resonance frequency of the vibration-damping floor 1, can be calculated by referring to the following calculation formula:

[0042]

[0043] Wherein, f0 is the resonance frequency of the vibration damping floor 1; m is the mass of the object above the vibration damping pad 11, that is, the mass of the upper floor 12; k is the stiffness of the vibration damping pad 11, k is related to the elastic modulus E, the larger the elastic modulus, the greater the stiffness, wherein the relationship between the elastic modulus E and the stiffness k of the vibration damping pad 11 is as follows:

[0044]

[0045] Where h is the material thickness and s is the material area.

[0046] Therefore, based on the above two formulas, it can be known that if the overall resonance frequency of the vibration-damping pad 11 and the upper floor 12 is to be controlled to be less than or equal to 30 Hz, the resonance frequency can be controlled by selecting a vibration-damping pad 11 with a corresponding elastic modulus, changing the thickness of the vibration-damping pad 11, and / or the material area, or by changing the mass of the upper floor 12.

[0047] In addition, optionally, the floor tiles can be set as ceramic tiles, or the floor tiles can be set as wooden floors. The specific type of floor tiles can be selected by residents and tenants according to actual needs and is not limited here.

[0048] In addition. When laying the first cushion layer 111 on the floor 21 of the building 2 and laying the second cushion layer 112 on the bottom edge of the wall 22 of the building 2, since the bottom edges of the floor 21 and the wall 22 usually have corners and other places that are difficult to lay, and it is difficult to lay a whole piece of the first cushion layer 111 and the second cushion layer 112, it is necessary to customize the shape and size of the bottom edges of the floor 21 and the wall 22. Therefore, the first cushion layer 111 and the second cushion layer 112 are usually made into several small pieces and combined by splicing. At this time, it should be noted that overlapping strips can be used to connect the gaps between the first cushion layers 111, between the second cushion layers 112, and between the first cushion layer 111 and the second cushion layer 112, so as to ensure a good vibration reduction effect.

[0049] Furthermore, in order to solve the problem that the lowest vibration damping frequency of the vibration damping floor 1 cannot completely cover the main vibration range of urban rail transit vibration, in an embodiment of the present invention, the overall resonance frequency of the vibration damping pad 11 and the upper floor 12 is less than or equal to 28 Hz.

[0050] In this embodiment, since the main vibration range of urban rail transit vibration is 40-80Hz, if the vibration damping floor 1 is to have a vibration damping effect on the low-frequency vibration of 40Hz, since the lowest vibration damping frequency that the vibration damping floor 1 can achieve is 1.4 times the resonance frequency of the vibration damping floor 1, it is necessary to set the resonance frequency of the vibration damping floor 1 to below 28.6Hz; in this embodiment, by setting the overall resonance frequency of the vibration damping pad 11 and the upper floor 12 to be less than or equal to 28Hz, the lowest vibration damping frequency of the vibration damping floor 1 can be lower than 40Hz, thereby achieving full coverage of the main vibration range of urban rail transit vibration by the vibration damping effect of the vibration damping floor 1, and further improving the vibration damping ability of the vibration damping floor 1 to urban rail transit vibration.

[0051] In order to solve the problem of poor vibration reduction effect caused by the contact between the upper floor 12 and the wall 22 of the building 2, in an embodiment of the present invention, the top of the floor tile is flush with the top of the second cushion layer 112, or the top of the floor tile is lower than the top of the second cushion layer 112.

[0052] In the above embodiment, since the top of the floor tile is flush with the top of the second cushion layer 112, or the top of the floor tile is lower than the top of the second cushion layer 112, and the concrete layer and the floor tile are located in the first area, the second cushion layer 112 is provided between the side of the concrete layer, the side of the floor tile and the wall 22 of the building 2; and the top of the second cushion layer 112 is higher than the top of the floor tile or flush with the top of the floor tile, so the top of the floor tile does not contact the wall 22, thereby avoiding any contact between the upper floor 12 and the wall 22 of the building 2, and ensuring the vibration reduction effect of the vibration reduction cushion layer 11 on the upper floor 12.

[0053] In the present invention, by analyzing the functional model of the vibration-damping floor 1 and sorting out the system components of the vibration-damping floor 1 and the relationships between them, it is found that the problem of poor vibration-damping effect of the conventional vibration-damping floor 1 is mainly caused by the insufficient barrier effect of the elastic cushion layer. For details, please refer to Figure 2 .

[0054] Therefore, based on the working principle of the vibration-damping pad 11, it is concluded that the key points of the vibration-damping floor 1 include the following two aspects: Key point one: the vibration-damping pad 11 as an elastic vibration-damping pad has high rigidity; Key point two: the pressure on the vibration-damping pad 11 is small, that is, the mass of the upper floor 12 is small.

[0055] Based on the analysis of the key causes of the above problems, the present invention has made improvements to the subsequent embodiments.

[0056] In order to solve the problem that the vibration-damping pad 11 has a large rigidity and leads to a poor vibration-damping effect, in the embodiment of the present invention, refer to Figure 1 and Figure 3The first cushion layer 111 includes a first vibration damper 1111 and a second vibration damper 1112 , the elastic modulus of the second vibration damper 1112 is smaller than the elastic modulus of the first vibration damper 1111 ; the first vibration damper 1111 is connected to the second vibration damper 1112 .

[0057] It should be noted that the first vibration damping body 1111 and the second vibration damping body 1112 can be understood as two elastic vibration damping pads with different elastic moduli.

[0058] In the above embodiment, the first cushion layer 111 is composed of a first vibration damper 1111 and a second vibration damper 1112 having different elastic moduli. It can be seen from the relationship between the elastic modulus E and the stiffness k of the vibration damping cushion layer 11 that the elastic modulus E is directly proportional to the stiffness k of the vibration damping cushion layer 11. Therefore, by making the elastic modulus of the second vibration damper 1112 smaller than the elastic modulus of the first vibration damper 1111, the first vibration damper 1111 plays a major supporting role for the upper floor 12 while damping vibrations, and the second vibration damper 1112 is responsible for the main vibration damping role and auxiliary support. In this way, by using two vibration dampers with different elastic moduli to cooperate with each other, while ensuring the supporting role for the upper floor 12, the stiffness of the first cushion layer 111 is reduced by reducing the overall elastic modulus of the first cushion layer 111, thereby ensuring that the first cushion layer 111 has a good vibration damping effect on the upper floor 12.

[0059] To further improve the vibration reduction effect, in the first optional implementation, please refer to Figure 1 , 3 4. The first vibration damper 1111 is divided into a plurality of vibration damper sub-blocks 1111a. The horizontal areas of the plurality of vibration damper sub-blocks 1111a are uneven but the thicknesses are the same. The plurality of vibration damper sub-blocks 1111a are distributed on the floor 21 of the building 2. The second vibration damper 1112 is provided with a plurality of notches corresponding to the plurality of vibration damper sub-blocks 1111a. The plurality of vibration damper sub-blocks 1111a are filled in the plurality of notches accordingly.

[0060] In the above embodiment, by dividing the first vibration damper 1111 into a plurality of vibration damper blocks 1111a, and distributing the vibration damper blocks 1111a with uniform thickness on the floor 21 of the building 2, and then filling the plurality of vibration damper blocks 1111a with the plurality of gaps of the second vibration damper 1112 correspondingly, the vibration damper blocks 1111a and the second vibration damper 1112 can damp vibrations according to different vibration frequencies and amplitudes, thereby improving the overall vibration damping effect; in addition, by filling the vibration damper blocks 1111a with a small elastic modulus into the gaps between the second vibration dampers 1112 with a large elastic modulus, the vibration energy can be further absorbed and dispersed, the vibration transmission of the floor 21 can be reduced, and the load of the floor 21 can be more evenly distributed, effectively avoiding stress concentration. Among them, as an optional implementation, multiple vibration damping sub-blocks 1111a can be distributed at intervals along the diagonal of the floor 21 of the building 2, and multiple vibration damping sub-blocks 1111a can also be arranged in a cross-shaped arrangement, or other arrangements can be adopted. The arrangement method of the multiple vibration damping sub-blocks 1111a is not limited herein.

[0061] In a second alternative implementation, see Figure 1 and Figure 5 The first cushion layer 111 also includes a third vibration damper 1113 , the elastic modulus of the third vibration damper 1113 is smaller than the elastic modulus of the second vibration damper 1112 ; the second vibration damper 1112 is connected to the third vibration damper 1113 .

[0062] It should be noted that the third vibration damping body 1113 can be understood as an elastic vibration damping pad.

[0063] In the above embodiment, by additionally providing a third vibration damper 1113, and making the elastic modulus of the third vibration damper 1113 smaller than the elastic modulus of the second vibration damper 1112, and connecting the second vibration damper 1112 to the third vibration damper 1113, the first vibration damper 1111, the second vibration damper 1112 and the third vibration damper 1113 together form the first cushion layer 111, so that the elastic modulus of the entire first cushion layer 111 is further reduced, thereby reducing the stiffness of the vibration damping cushion layer 11, and further improving the vibration damping capacity of the vibration damping cushion layer 11. In this embodiment, the first vibration damper 1111 plays a primary supporting role and assists in vibration damping; the second vibration damper 1112 plays a secondary vibration damping role and a secondary supporting role; the third vibration damper 1113 plays a primary vibration damping role and assists in support.

[0064] Further, as an optional implementation, please refer to Figure 1 and Figure 5A first groove is provided on the top of the first vibration damper 1111, and the second vibration damper 1112 is accommodated in the first groove; a second groove is provided on the top of the second vibration damper 1112, and the third vibration damper 1113 is accommodated in the second groove; the tops of the first vibration damper 1111, the second vibration damper 1112, and the third vibration damper 1113 are flush.

[0065] In the above embodiment, by setting the second vibration damper 1112 in the first groove of the first vibration damper 1111, and setting the third vibration damper 1113 in the second groove of the second vibration damper 1112, a set form is formed between the vibration dampers with different elastic moduli, so that the first cushion layer 111 has three layers of vibration dampers to damp the vibration transmitted by the floor 21 of the building 2 to different degrees, which can also achieve a good vibration damping effect. In addition, the top of the first vibration damper 1111, the top of the second vibration damper 1112, and the top of the third vibration damper 1113 are flush, thereby ensuring the flatness of the top of the first cushion layer 111, so that the top surface of the first cushion layer 111 is fully fitted with the bottom surface of the upper floor 12, avoiding the uneven top of the first cushion layer 111, which leads to a reduction in the vibration damping effect on the upper floor 12 and uneven local force on the first cushion layer 111.

[0066] In order to solve the problem of low pressure on the vibration-damping pad 11 , in an embodiment of the present invention, a steel plate is laid between the vibration-damping pad 11 and the upper floor 12 .

[0067] In the above embodiment, by laying a steel plate between the vibration-damping pad 11 and the upper floor 12, not only can the pressure on the vibration-damping pad 11 be increased, thereby improving the vibration-damping effect; at the same time, the provision of the steel plate can also enable the pressure transmitted downward by the upper floor 12 to be distributed to various locations along the steel plate, thereby avoiding uneven force on the vibration-damping pad 11 below and causing excessive local stress, thereby ensuring the service life of the vibration-damping pad 11.

[0068] Furthermore, in order to solve the problem of the small mass of the upper floor 12, in an embodiment of the present invention, the concrete layer is configured as reinforced cement concrete, and meshed steel bars are provided in the reinforced cement concrete.

[0069] In the above embodiment, by setting the concrete layer as reinforced cement concrete, mesh steel bars are provided in the reinforced cement concrete, thereby increasing the mass of the concrete layer, so that the concrete layer can exert greater pressure on the vibration-damping pad 11 below, thereby improving the vibration-damping effect of the vibration-damping pad 11 on the upper floor 12. In addition, the provision of the mesh steel bars can strengthen the integrity of the upper floor 12 and improve the stress distribution, effectively avoiding excessive stress on the upper floor 12 due to the long-term placement of furniture on the upper floor 12, and avoiding local deformation of the upper floor 12.

[0070] During the pouring of the concrete layer, unformed concrete will penetrate into the vibration damping pad 11, resulting in a decrease in the vibration damping ability of the vibration damping pad 11. To solve the above problem, in an embodiment of the present invention, an isolation membrane is laid between the vibration damping pad 11 and the concrete layer.

[0071] In the above embodiment, an isolation membrane is laid between the vibration-damping pad 11 and the concrete layer to separate the unformed concrete from the vibration-damping pad 11, thereby preventing the unformed concrete from penetrating into the vibration-damping pad 11, thereby ensuring that the vibration-damping capacity of the vibration-damping pad 11 will not be affected by the concrete.

[0072] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vibration-damping floor, characterized in that: Applications in buildings include: A vibration-damping cushion layer, the vibration-damping cushion layer comprising a first cushion layer and a second cushion layer, the first cushion layer being horizontally laid on the floor slab of the building, the second cushion layer being laid along the bottom edge of the wall of the building, the second cushion layer being connected to the first cushion layer, and the first cushion layer and the second cushion layer enclosing a first area; an upper floor, the upper floor comprising a concrete layer and floor tiles, the concrete layer being laid in the first area; the floor tiles being laid above the concrete layer, the floor tiles being located in the first area; The overall resonance frequency of the vibration-damping pad and the upper floor is less than or equal to 30 Hz.

2. The vibration-damping floor according to claim 1, characterized in that: The overall resonance frequency of the vibration-damping pad and the upper floor is less than or equal to 28 Hz.

3. The vibration-damping floor according to claim 2, characterized in that: The top of the floor tile is flush with the top of the second cushion layer, or the top of the floor tile is lower than the top of the second cushion layer.

4. The vibration-damping floor according to claim 3, characterized in that: The first cushion layer includes a first vibration damper and a second vibration damper, wherein the elastic modulus of the second vibration damper is smaller than the elastic modulus of the first vibration damper; The first vibration damper is connected to the second vibration damper.

5. The vibration-damping floor according to claim 4, characterized in that: The first vibration damping body is divided into a plurality of vibration damping sub-blocks, the horizontal areas of the plurality of vibration damping sub-blocks are uneven but the thicknesses are the same, and the plurality of vibration damping sub-blocks are distributed on the floor slab of the building; The second vibration damping body is provided with a plurality of notches corresponding to the plurality of vibration damping sub-blocks, and the plurality of vibration damping sub-blocks are filled in the plurality of notches accordingly.

6. The vibration-damping floor according to claim 4, characterized in that: The first cushion layer further includes a third vibration damper, wherein the elastic modulus of the third vibration damper is smaller than the elastic modulus of the second vibration damper; The second vibration damper is connected to the third vibration damper.

7. The vibration-damping floor according to claim 6, characterized in that: A first groove is provided on the top of the first vibration damper, and the second vibration damper is accommodated in the first groove; a second groove is provided on the top of the second vibration damper, and the third vibration damper is accommodated in the second groove; The top of the first vibration damper, the top of the second vibration damper, and the top of the third vibration damper are flush.

8. The vibration-damping floor according to any one of claims 1 to 7, characterized in that: A steel plate is laid between the vibration-damping pad and the upper floor.

9. The vibration-damping floor according to claim 8, characterized in that: The concrete layer is formed by pouring cement, and mesh steel bars are arranged in the concrete layer.

10. The vibration-damping floor according to claim 9, characterized in that: An isolation membrane is laid between the vibration-damping cushion layer and the concrete layer.

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