Intelligent floating floor slab system based on multistage shock insulation and construction method

Abstract

The invention discloses an intelligent floating floor system based on multistage shock insulation and a construction method, and relates to the technical field of building shock insulation, the intelligent floating floor system comprises a facing layer, the facing layer is a 3mm elastic polyurethane coating, the facing layer can directly absorb high-frequency impact energy, a bearing layer is arranged at the bottom of the facing layer, and the bearing layer is arranged at the bottom of the facing layer. The bearing layer is a 50mm high-strength lightweight aggregate concrete plate, a bidirectional reinforcing mesh is arranged in the bearing layer, an intelligent damping layer is arranged at the bottom of the bearing layer, and a monitoring module is arranged at the bottom of the intelligent damping layer. In the invention, the system has remarkable advantages in the aspects of functionality, economy, environmental protection and technical advancement, and has an important popularization value in the field of building shock insulation due to a multi-stage shock insulation system, intelligent monitoring and regulation, a high-precision construction process and a wide application scene; and the comprehensive requirements of modern buildings on shock insulation, shock absorption and intellectualization can be met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of building seismic isolation, in particular to an intelligent floating building floor system based on multistage seismic isolation and a construction method. BACKGROUND

[0002] With the acceleration of urbanization, the safety and comfort of building structures under the action of dynamic loads such as earthquakes, wind loads and traffic vibrations are increasingly concerned.

[0003] Traditional building floor systems are mainly rigidly connected and lack effective seismic isolation and vibration reduction capacity. Under the action of earthquakes, rigid floor can directly transmit vibration energy to the main building structure, leading to structural fatigue damage or even destruction. Low-frequency vibration and high-frequency noise caused by urban rail transit and heavy vehicle driving seriously affect the use comfort of the building interior. High-frequency impact and vibration generated by equipment operation in industrial plants can cause floor cracking, structural loosening and even affect the service life of the equipment. To solve the above problems, an intelligent floating building floor system based on multistage seismic isolation and a construction method are provided. SUMMARY

[0004] In view of the deficiencies of the prior art, the application provides an intelligent floating building floor system based on multistage seismic isolation and a construction method, which solves the above problems.

[0005] To achieve the above object, the application is implemented by the following technical scheme: an intelligent floating building floor system based on multistage seismic isolation, comprising a finishing layer, the finishing layer is a 3mm elastic polyurethane coating, the finishing layer can directly absorb high-frequency impact energy, the bottom of the finishing layer is provided with a bearing layer, the bearing layer is a 50mm high-strength lightweight aggregate concrete slab, the bearing layer is internally provided with a bidirectional steel mesh, the bottom of the bearing layer is provided with an intelligent damping layer, the bottom of the intelligent damping layer is provided with a monitoring module. The intelligent damping layer comprises an upper layer, the upper layer is located at the bottom of the bearing layer, the upper layer is an array type disc spring, which matches the parameters of automobile suspension, the bottom of the upper layer is provided with a middle layer, the middle layer is a closed-cell foam rubber vibration isolation pad, which is inspired by high-speed rail sleeper pad technology, the bottom of the middle layer is provided with a lower layer, the lower layer is a viscous fluid damping cavity, and the lower layer is located at the top of the monitoring module.

[0006] Preferably, the monitoring module is provided with a network of piezoelectric acceleration sensors, the monitoring module collects vibration signals in real time and feeds back to the control terminal, the bottom of the monitoring module is provided with a base treatment, the base treatment is to coat an epoxy-based interface agent on the surface of the original structure floor slab of the building, the base treatment is to ensure the reliability of the interlayer adhesion, the bottom of the base treatment is provided with an edge treatment, the edge treatment is to embed L-shaped EPDM sound insulation sheets around the floor slab and fill graphene modified sealant between the walls, the edge treatment forms a continuous elastic sealing strip between the walls, a labyrinth sound insulation sleeve is used at the pipeline crossing of the continuous elastic sealing strip to block the structure sound transmission path, the monitoring module is input with a control logic, the control logic is: analyzing the vibration main frequency by Fourier transform, if the >50Hz component is detected, the damping coefficient is automatically reduced to quickly dissipate energy, when the impact energy >100J, the spring pre-pressure is instantaneously increased to the critical value to avoid resonance amplification.

[0007] Preferably, the facing layer adopts a 3mm thick elastic polyurethane coating, the Shore hardness of the elastic polyurethane coating is between 30-50A, the surface of the facing layer introduces a micro-texture design, the facing layer adds nano-titanium dioxide, the photocatalytic components in the facing layer endow the facing layer with self-cleaning function, the facing layer optimizes the coating thickness distribution through finite element simulation, the thickness of the facing layer is increased to 3.5mm in the central area and is reduced to 2.5mm in the edge area, the aggregate of the high-strength lightweight aggregate concrete slab in the bearing layer is selected from ceramsite with a density of ≤1200kg / m3, the internal porosity of the bearing layer is controlled at 10%-15%, the bearing layer adopts HRB500E high-strength steel bar for the two-way steel mesh, the mesh spacing of the bearing layer is optimized to 150mmx150mm, the reinforcement ratio of the bearing layer is increased to 0.8%-1.0%, the bearing layer is embedded with a reinforcing rib structure, the four corners and the middle part of the bearing layer are provided with an eight-shaped hidden beam, the disc spring group is composed of 20-30 independent units, the thickness of a single disc spring is optimized to 25mm, the bearing capacity of the disc spring ranges from 50-200kN, the surface of the disc spring is chrome plated, the closed-cell foam rubber shock isolation pad is made of EPDM and polyurethane composite material, the closed-cell rate of the closed-cell foam rubber shock isolation pad is >95%, the tensile strength of the closed-cell foam rubber shock isolation pad is >15MPa, the upper part of the closed-cell foam rubber shock isolation pad has a lower density to absorb high-frequency vibration, the lower part of the closed-cell foam rubber shock isolation pad has a higher density to enhance the low-frequency shock isolation effect, the internal part of the viscous fluid damping cavity is filled with a silicon-based shear thickening fluid, the silicon-based shear thickening fluid includes inorganic nanoparticles and polydimethylsiloxane, the viscous fluid damping cavity is equipped with a micro-hydraulic proportional valve.

[0008] Preferably, the piezoelectric acceleration sensor network is expanded from a two-dimensional plane to a three-dimensional space, the sensor spacing in the piezoelectric acceleration sensor network is optimized to 0.5mx0.5mx0.5m, the piezoelectric acceleration sensor network is equipped with MEMS gyroscopes and strain gauges, and the piezoelectric acceleration sensor network is equipped with a wireless communication module.

[0009] Preferably, the epoxy-based interface agent is added with organic bentonite, the roughness Ra of the surface of the cured epoxy-based interface agent is ≤10um, the bonding strength of the epoxy-based interface agent is >3MPa, the shear strength of the graphene modified sealant is ≥2MPa, the weather resistance of the graphene modified sealant is -40℃-85°C, the internal structure of the L-shaped EPDM sound insulation sheet is designed as a honeycomb structure, the thickness of the L-shaped EPDM sound insulation sheet is 10mm, and the labyrinth sound insulation sleeve is a multilayer composite structure.

[0010] An intelligent floating floor construction method based on multi-stage vibration isolation, using any one of the intelligent floating floor systems based on multi-stage vibration isolation, comprising the following steps: Step one, foundation preparation; Step two, install the multi-stage vibration isolation device; Step three, lay out the intelligent monitoring system; Step four, install the floating floor formwork; Step five, reinforcement binding and concrete pouring of the floating floor; Step six, post-processing of the floating floor.

[0011] Preferably, in step one, more specifically: the building original structure floor is cleaned overall, remove oil, dust, loose concrete and other impurities, using high pressure spray gun cleaning, ensure the surface is flat, dry, clean, using laser level and laser flatness instrument for testing, the surface flatness error control within ± 5mm, the cracks, holes and other defects of the floor are repaired by high strength epoxy mortar or carbon fiber composite material, ensure the compressive strength after repair reaches C50 or more, the epoxy based interface agent and organic bentonite are mixed according to the specified proportion, mixed evenly, defoaming for 15 minutes, ensure the viscosity of interface agent is moderate, using airless spraying or rolling coating method, coating thickness control within 3mm, ensure the interface agent is uniform and continuous, no leakage or flow, set up curing area after coating, keep the ambient temperature 20+5℃, humidity less than 80%, curing time not less than 24 hours, surface roughness Ra≤10um, according to the floor perimeter embedded L type sound insulation sheet, using special adhesive and base bonding, and fixed with stainless steel fixture, the joint of sound insulation sheet uses hot melt welding technology, ensure the sealing, fill the sealant between the wall and the sound insulation sheet gap, thickness uniform control in 2-3mm, shear strength > 2MPa, weather resistance -40℃ to 85℃, the pipeline through the pre-embedded multilayer composite sound insulation sleeve, the sleeve is filled with sound-absorbing material, the sleeve is sealed with the wall at both ends; In step two, more specifically: select 3mm thick elastic polyurethane coating, Shore hardness 30-50A, photocatalytic component nano titanium dioxide content of 5%-7%, using hot melt spraying or scraping method, thickness by laser thickness gauge dynamic monitoring, to ensure that the center area thickness reaches 3.5mm, edge area thickness 2.5mm, surface microtexture laser engraving technology processing texture depth 0.5mm, pitch 2mm, high-strength lightweight aggregate concrete using ceramsite and superfine mineral powder, mix ratio is ceramsite: cement: mineral powder: water = 1:1.5:0.2:0.4, mixed with water reducing agent to control the slump ≤100mm, using a steel formwork, support system using fastener type steel pipe scaffold, formwork sealing strip S-shaped compression type sealing strip is selected to prevent slurry leakage, two-way steel mesh HRB500E steel mesh grid spacing 150mmx150mm, reinforcement ratio 0.8%-1.0%, weld tensile strength >300MPa, wall corner eight-shaped hidden beam before pouring is provided with steel anchoring bar, anchoring depth 150mm, pullout strength ≥15kN, using steam curing technology, humidity control in 90%-95%, temperature 50+5℃, curing time not less than 72 hours, disc spring group adopts modular assembly, the number of units is adjusted according to the load demand of floor, spring surface chromium plating thickness >10um, installation through spring positioner to ensure perpendicularity and spacing error ≤+5mm, closed cell foam rubber shock isolation pad adopts pre-pressed block, single block size is 500mmx500mmx50mm, joint gap ≤2mm, closed cell foam rubber shock isolation pad after installation through vacuum compaction process to improve the density, deformation rate <15% when compression stress 50kPa, damping cavity uses high-strength aluminum alloy cavity, wall thickness ≥3mm, embedded micro hydraulic proportional valve in the cavity, silicon-based shear thickening fluid is mixed by silica particles and PDMS matrix according to mass ratio 3:7, through ultrasonic dispersion homogenization treatment.

[0012] Preferably, in step three, more specifically: matrix arrangement is adopted, sensor and concrete surface are fixed by magnetic support, anti-vibration 220g, gyroscope sampling frequency 1024Hz, strain gauge resolution 0.01%, installation position is planned synchronously with sensor network to avoid electromagnetic interference, LoRa or 5G communication protocol is adopted, data sampling period ≤1s, communication distance ≥500m, edge computing unit is arranged inside the floating floor slab to filter, denoise and feature extract sensor data in real time, reduce cloud transmission volume, and distributed cloud storage is adopted, vibration data are stored according to time sequence, historical data query and trend analysis are supported; In step four, more specifically: the formwork adopts thin steel plate, the surface is coated with release agent, the support system adopts adjustable steel support, the spacing is <1.2m, the elastic sealing strip is used at the formwork joint to prevent leakage, the vibrating hole and observation hole are reserved.

[0013] Preferably, in step five, more specifically: the main reinforcement protection layer of the steel bar binding is 40mm thick, the distribution reinforcement spacing is 100mm, the binding firmness meets the pulling test ≥25kN, the concrete is high-performance commercial concrete, the strength grade is C50, 15% fly ash and 3% anti-cracking fiber are added, the slump is controlled at 160+20mm, high-frequency vibrating rod is used for multi-point synchronous vibration during construction, the vibration time is 10-15s, and over-vibration or missed vibration is avoided.

[0014] Preferably, in step six, more specifically: the floor surface adopts laser leveling technology, the flatness error is ≤2mm, and the junction between the intelligent damping layer and the finish layer is sealed to prevent air leakage.

[0015] Beneficial effects The application provides an intelligent floating floor system based on multi-stage vibration isolation and a construction method. In the application, the finish layer absorbs high-frequency impact energy through an elastic polyurethane coating and micro-texture design, and the nano-titanium dioxide gives self-cleaning function; the closed-cell foam rubber shock isolation pad is designed by density gradient, absorbs high-frequency vibration at the upper part, and enhances low-frequency vibration isolation effect at the lower part; the disc spring matches the parameters of the automobile suspension, dynamically adjusts the stiffness, weakens the transmission of low-frequency vibration, and the edge treatment blocks the noise transmission path through rubber sound insulation sheets and sealant; the labyrinth sound insulation sleeve enhances the sealing performance at the pipeline crossing; the main frequency of vibration is extracted by Fourier transform, the damping coefficient and spring pre-pressure are automatically adjusted, resonance amplification is avoided, the control logic instantaneously increases the spring pre-pressure to a critical value when the impact energy is >100J, the floor structure is protected, the edge computing unit performs real-time filtering and feature extraction on the vibration signal, reduces the cloud transmission volume, supports historical data query and trend analysis, the closed-cell rate of the closed-cell foam rubber shock isolation pad is >95%, the tensile strength is >15MPa, the service life is more than 20 years, the piezoelectric acceleration sensor has a vibration resistance of 220g, the communication distance of the wireless communication module is >500m, and the data sampling period is ≤1s. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The flowchart of the multi-stage vibration isolation intelligent floating floor system of the application; Fig. 2 The flowchart of the multi-stage vibration isolation intelligent floating floor construction method of the application. DETAILED DESCRIPTION

[0017] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0018] Please refer to Figs. 1-2 The technical solutions provided by the present application specifically include the following embodiments.

[0019] Embodiment: An intelligent floating floor system based on multi-stage vibration isolation, comprising a finishing layer, the finishing layer is a 3mm elastic polyurethane coating, the finishing layer can directly absorb high-frequency impact energy, the bottom of the finishing layer is provided with a bearing layer, the bearing layer is a 50mm high-strength lightweight aggregate concrete slab, the bearing layer is embedded with a bidirectional steel mesh, the bottom of the bearing layer is provided with an intelligent damping layer, the bottom of the intelligent damping layer is provided with a monitoring module; The intelligent damping layer comprises an upper layer, the upper layer is located at the bottom of the bearing layer, the upper layer is an array of disc springs, matching the parameters of automobile suspension, the bottom of the upper layer is provided with a middle layer, the middle layer is a closed-cell foam rubber vibration isolation pad, the middle layer is inspired by high-speed rail sleeper pad technology, the bottom of the middle layer is provided with a lower layer, the lower layer is a viscous fluid damping cavity, and the lower layer is located at the top of the monitoring module.

[0020] The monitoring module is provided with a network of piezoelectric acceleration sensors, the monitoring module collects vibration signals in real time and feeds back to the control terminal, the bottom of the monitoring module is provided with a base treatment, the base treatment is to coat an epoxy-based interface agent on the surface of the original structure floor slab of the building, the base treatment is to ensure the reliability of interlayer adhesion, the bottom of the base treatment is provided with an edge treatment, the edge treatment is to embed L-shaped EPDM rubber sound insulation sheets around the floor slab and fill graphene modified sealant between the wall bodies, the edge treatment forms a continuous elastic sealing band between the wall bodies, labyrinth sound insulation sleeves are used at the pipeline crossing of the continuous elastic sealing band to block the structure sound transmission path, the monitoring module is input with a control logic, the control logic is: analyzing the vibration main frequency by Fourier transform, if the >50Hz component is detected, the damping coefficient is automatically reduced to quickly dissipate energy, when the impact energy >100J, the spring pre-pressure is instantaneously increased to the critical value to avoid resonance amplification.

[0021] The facing layer adopts a 3mm thick elastic polyurethane coating, the Shore hardness of the elastic polyurethane coating is between 30-50A, the surface of the facing layer introduces a micro-texture design, the facing layer adds nano titanium dioxide, the photocatalytic components in the facing layer endow the facing layer with self-cleaning function, the facing layer optimizes the coating thickness distribution through finite element simulation, the thickness of the facing layer in the central area is increased to 3.5mm, and the thickness of the facing layer in the edge area is thinned to 2.5mm, the aggregate of the high-strength lightweight aggregate concrete slab in the bearing layer is selected from ceramsite with a density of ≤1200kg / m3, the porosity of the bearing layer is controlled at 10%-15%, the two-way steel mesh in the bearing layer adopts HRB500E high-strength steel, the grid spacing in the bearing layer is optimized to 150mmx150mm, the reinforcement ratio in the bearing layer is increased to 0.8%-1.0%, the bearing layer is embedded with a reinforcing rib structure, eight-shaped hidden beams are arranged at the four corners and the middle of the bearing layer, the disc spring group is composed of 20-30 independent units, the thickness of a single disc spring is optimized to 25mm, the bearing capacity of the disc spring is 50-200kN, the surface of the disc spring is chrome plated, the closed-cell foam rubber shock pad is made of ethylene propylene diene rubber and polyurethane composite material, the closed-cell rate of the closed-cell foam rubber shock pad is >95%, the tensile strength of the closed-cell foam rubber shock pad is >15MPa, the upper part of the closed-cell foam rubber shock pad has a lower density to absorb high-frequency vibration, the lower part of the closed-cell foam rubber shock pad has a higher density to enhance the low-frequency shock isolation effect, the viscous fluid damping cavity is filled with silicon-based shear thickening fluid, the silicon-based shear thickening fluid includes inorganic nanoparticles and polydimethylsiloxane, and the viscous fluid damping cavity is provided with a micro hydraulic proportional valve; The thickness of the center area of the office building public area finish layer is increased to 3.8mm to enhance wear resistance and self-cleaning function, the thickness of the edge area is maintained at 2.5mm, the surface micro-texture design is a diamond grid with a texture depth of 0.5mm and a pitch of 2mm to improve slip resistance, and a nano-titanium dioxide photocatalytic component is added to keep the finish layer clean and free of dirt during long-term use. The floor load requirement is higher, the ceramsite density is selected as 1100kg / m3, the aggregate particle size is 5-10mm, the mix proportion is ceramsite:cement:slag:water=1:1.5:0.2:0.4, the two-way steel mesh grid spacing is optimized to 120mmx120mm, the reinforcement ratio is increased to 0.9% to improve the local compressive capacity, the eight-shaped hidden beams are arranged at the four corners and the middle part with a width of 200mm and a height of 300mm to enhance the overall stiffness and crack resistance of the floor, the disc spring group adopts 30 independent units with a load capacity range of 100-200kN to match the high-frequency vibration requirements of the office building, the upper density of the closed-cell foam rubber vibration isolation pad is set to 40kg / m3 to absorb high-frequency vibrations, and the lower density is set to 80kg / m3 to enhance the low-frequency vibration isolation effect. The viscous fluid damping cavity is filled with a silicon-based shear thickening fluid, the nano-silicon dioxide particle size is 30nm, the PDMS matrix mass ratio is 3:7, a miniature hydraulic proportional valve is installed, the damping coefficient is dynamically adjusted through the control terminal to ensure efficient dissipation of vibration energy.

[0022] The piezoelectric acceleration sensor network is expanded from a two-dimensional plane to a three-dimensional space, the sensor spacing in the piezoelectric acceleration sensor network is optimized to 0.5mx0.5mx0.5m, the piezoelectric acceleration sensor network is equipped with MEMS gyroscopes and strain gauges, and the piezoelectric acceleration sensor network is equipped with a wireless communication module. The piezoelectric acceleration sensor network adopts a three-dimensional matrix arrangement with a spacing of 0.5mx0.5mx0.5m, covering the entire floor, and the sensor arrangement is densified near the elevator shaft and air conditioning room with a spacing of 0.3mx0.3mx0.3m to improve the local vibration monitoring accuracy. The edge computing unit performs real-time filtering and feature extraction on the sensor data, the cloud stores vibration data, and supports historical data query and trend analysis.

[0023] The epoxy-based interface agent contains organic bentonite, the roughness Ra of the surface of the cured epoxy-based interface agent is ≤10um, the bonding strength of the epoxy-based interface agent is >3MPa, the shear strength of the graphene modified sealant is ≥2MPa, the weather resistance of the graphene modified sealant is -40℃-85°C, the internal structure of the L-shaped EPDM acoustic tile is designed as a honeycomb, the thickness of the L-shaped EPDM acoustic tile is 10mm, and the labyrinth acoustic sleeve is a multi-layer composite structure.

[0024] An intelligent floating floor construction method based on multi-stage vibration isolation, using an intelligent floating floor system based on multi-stage vibration isolation, comprising the following steps: Step 1: Basic preparation: thoroughly clean the original structural floor of the building, test the concrete strength, repair cracks and holes, and ensure that the compressive strength after repair reaches C50 or above; Step 2: Install the multi-stage seismic isolation device. The butterfly spring group is installed through the spring positioner. The verticality error is ≤t5mm. The closed-cell foam rubber seismic isolation pad adopts the vacuum compaction process, and the density is increased to 98%; Step 3: Deploy the intelligent monitoring system. The sensor is fixed to the concrete surface with a magnetic bracket, with a vibration resistance of 220g. The wireless communication module uses the LoRa protocol, with a communication distance of >500m. Step 4: Install the floating floor formwork, apply a release agent on the formwork surface, and use adjustable steel brackets with a spacing of 0.8-1.2m for the support system; Step 5: Tie the steel bars and pour the concrete for the floating floor slab. Use a high-frequency vibrator to perform multi-point synchronous vibration for 10-15 seconds to avoid over-vibration or missed vibration. Step six, post-processing of the floating floor slab. Laser leveling technology is used on the floor slab surface, with a flatness error of ≤2mm, to ensure seamless connection between the finishing layer and the intelligent damping layer.

[0025] In step one, more specifically: the original structural floor of the building is thoroughly cleaned to remove impurities such as oil, dust, and loose concrete. A high-pressure spray gun is used to clean the floor to ensure that the surface is flat, dry, and clean. A laser level and a laser flatness meter are used for inspection to control the surface flatness error within ±5mm. Cracks, holes, and other defects in the floor are repaired with high-strength epoxy mortar or carbon fiber composite materials to ensure that the compressive strength after repair reaches C50 or above. The epoxy-based interface agent and organic bentonite are mixed in the specified proportion, and after mixing, they are allowed to stand for 15 minutes to defoam to ensure that the viscosity of the interface agent is moderate. Airless spraying or roller coating is used for construction, and the coating thickness is controlled at 3mm. Ensure that the interface agent is uniform and continuous without missing or dripping. After coating, set up a curing area and maintain an ambient temperature of 20+5℃ and humidity below 80%. The curing time is not less than 24 hours and the surface roughness Ra≤10um. Pre-embed L-shaped sound insulation sheets according to the perimeter of the floor slab, use a special adhesive to bond with the base layer and fix with stainless steel clamps. Use hot melt welding technology at the joints of the sound insulation sheets to ensure sealing. Fill the gap between the wall and the sound insulation sheet with sealant. The thickness is uniformly controlled at 2-3mm. The shear strength after curing is greater than 2MPa and the weather resistance is -40℃ to 85℃. Pre-embed multi-layer composite sound insulation sleeves at the pipeline crossing point, fill the sleeves with sound-absorbing material, and seal the sleeves at both ends to the wall. In step two, more specifically: select 3mm thick elastic polyurethane coating, Shore hardness 30-50A, photocatalytic component nano titanium dioxide content of 5%-7%, using hot melt spraying or scraping method, thickness by laser thickness gauge dynamic monitoring, to ensure that the central region thickness reaches 3.5mm, edge region thickness 2.5mm, surface microtexture laser engraving technology processing texture depth 0.5mm, pitch 2mm, high-strength lightweight aggregate concrete using ceramsite and superfine mineral powder, mix ratio of ceramsite: cement: mineral powder: water = 1:1.5:0.2:0.4, mixed with water reducing agent to control the slump ≤100mm, using a steel formwork, support system using fastener type steel pipe scaffold, formwork sealing strip S-shaped compression type sealing strip is selected to prevent slurry leakage, two-way steel mesh HRB500E steel mesh grid spacing 150mmx150mm, reinforcement ratio 0.8%-1.0%, weld tensile strength >300MPa, wall corner eight-shaped hidden beam before pouring is provided with steel anchoring bar, anchoring depth 150mm, pullout strength ≥15kN, using steam curing technology, humidity control in 90%-95%, temperature 50+5℃, curing time not less than 72 hours, disc spring group adopts modular assembly, the number of units is adjusted according to the load demand of floor, spring surface chromium plating thickness >10um, verticality and spacing error ≤+5mm are ensured through spring positioner during installation, closed cell foam rubber shock isolation pad adopts pre-pressed block, single block size is 500mmx500mmx50mm, joint gap ≤2mm, closed cell foam rubber shock isolation pad is installed through vacuum compaction process to improve the density, deformation rate <15% when compression stress is 50kPa, damping cavity adopts high-strength aluminum alloy cavity, wall thickness ≥3mm, micro hydraulic proportional valve is embedded in the cavity, silicon-based shear thickening fluid is mixed by silica particles and PDMS matrix according to mass ratio 3:7, and is treated by ultrasonic dispersion homogenization.

[0026] In step three, more specifically: matrix arrangement is adopted, sensor and concrete surface are fixed by magnetic support, vibration resistance is 220g, gyroscope sampling frequency is 1024Hz, strain gauge resolution is 0.01%, installation position is planned synchronously with sensor network to avoid electromagnetic interference, LoRa or 5G communication protocol is adopted, data sampling period is ≤1s, communication distance is ≥500m, edge computing unit is arranged in the floating floor slab, sensor data is filtered, denoised and feature extracted in real time, cloud transmission amount is reduced, distributed cloud storage is adopted, vibration data is stored according to time sequence, historical data query and trend analysis are supported; In step four, more specifically: the template adopts waterproof plywood, the surface is coated with release agent, the support system adopts adjustable steel support, the interval is <1.2m, the template splicing place adopts elastic sealing strip to prevent leakage, the reserved vibrating hole and observation hole, in addition, considering that the template is on the elevated layer, it is not easy to disassemble in the later period, in order to improve the hardness and strength, ensure the stability, the template in this step can also adopt thin steel plate or hard plastic plate in practice, it should be pointed out that if sound insulation effect needs to be considered in practice, high-strength gypsum board with good sound insulation and strength effect can also be used as the template of the application, which can ensure the quality of the building.

[0027] In step five, more specifically: the main reinforcement protection layer thickness of the steel bar binding is 40mm, the distribution reinforcement spacing is 100mm, the binding firmness meets the pulling test ≥25kN, the concrete is high-performance commercial concrete, the strength grade is C50, 15% fly ash and 3% anti-cracking fiber are mixed, the slump is controlled within 160+20mm, high-frequency vibrating rod is used for multi-point synchronous vibration during construction, the vibrating time is 10-15s, and over-vibration or missed vibration is avoided.

[0028] In step six, more specifically: the floor surface adopts laser leveling technology, the flatness error is ≤2mm, the connection between the intelligent damping layer and the finish layer is sealed to prevent air leakage.

[0029] Meanwhile, the contents not described in detail in the specification all belong to the existing technology known to those skilled in the art.

[0030] When working, the finish layer absorbs high-frequency impact energy through the elastic polyurethane coating and micro-texture design, the nano-titanium dioxide gives self-cleaning function, the closed-cell foam rubber shock isolation pad absorbs high-frequency vibration through density gradient design, the upper part, enhances the low-frequency shock isolation effect, the disc spring matches the parameters of the automobile suspension, dynamically adjusts the stiffness, weakens the transmission of low-frequency vibration, the edge treatment blocks the noise transmission path through rubber soundproof sheet and sealant, the labyrinth sound insulation sleeve enhances the sealing performance of the pipeline crossing, the main frequency of vibration is extracted through Fourier transform, the damping coefficient and spring pre-pressure are automatically adjusted to avoid resonance amplification, the control logic instantaneously increases the spring pre-pressure to the critical value when the impact energy >100J, protects the floor structure, the edge computing unit filters and extracts features of the vibration signal in real time, reduces the cloud transmission volume, supports historical data query and trend analysis, the closed-cell rate of the closed-cell foam rubber shock isolation pad is >95%, the tensile strength is >15MPa, the service life is more than 20 years, the piezoelectric acceleration sensor has vibration resistance of 220g, the wireless communication module has communication distance >500m, and the data sampling period is ≤1s. Through the above promotion, it can be seen that the system has significant advantages in functionality, economy, environmental protection and technical advancement. Its multi-stage isolation system, intelligent monitoring and regulation, high-precision construction technology and wide application scenarios make it have important popularization value in the field of building isolation, and can meet the comprehensive needs of modern buildings for isolation, vibration reduction and intelligence.

Claims

1. An intelligent floating floor system based on multi-level seismic isolation, characterized by: It includes a finishing layer, which is a 3mm elastic polyurethane coating that can directly absorb high-frequency impact energy. The bottom of the finishing layer is provided with a bearing layer, which is a 50mm high-strength lightweight aggregate concrete slab with a built-in bidirectional steel mesh. The bottom of the bearing layer is provided with an intelligent damping layer, and the bottom of the intelligent damping layer is provided with a monitoring module. The intelligent damping layer includes an upper layer, which is located at the bottom of the bearing layer. The upper layer is an array of disc springs that matches the automobile suspension parameters. A middle layer is provided at the bottom of the upper layer. The middle layer is a closed-cell foam rubber vibration isolation pad. The middle layer draws on the high-speed rail sleeper pad technology. A lower layer is provided at the bottom of the middle layer. The lower layer is a viscous fluid damping chamber. The lower layer is located at the top of the monitoring module.

2. The intelligent floating floor system based on multi-level seismic isolation according to claim 1 is characterized by: The monitoring module is equipped with a piezoelectric acceleration sensor network. The monitoring module collects vibration signals in real time and feeds them back to the control terminal. The bottom of the monitoring module is provided with a base treatment, which is to apply an epoxy interface agent to the surface of the original structural floor of the building. The base treatment is to ensure the reliability of interlayer bonding. The bottom of the base treatment is provided with an edge treatment, which is to pre-embed L-shaped EPDM rubber sound insulation sheets around the floor and fill the space between the wall and the graphene-modified sealant. The edge treatment is to form a continuous elastic sealing belt between the walls. The pipeline crossing of the continuous elastic sealing belt adopts a labyrinth-type sound insulation sleeve to block the structural sound transmission path. The monitoring module is input with control logic, which is as follows: the main frequency of vibration is analyzed through Fourier transform. If a component greater than 50Hz is detected, the damping coefficient is automatically reduced to quickly dissipate energy. When the impact energy is greater than 100J, the spring preload is instantaneously increased to a critical value to avoid resonance amplification.

3. The intelligent floating floor system based on multi-level seismic isolation according to claim 1 is characterized by: The finishing layer adopts a 3mm thick elastic polyurethane coating, the Shore hardness of the elastic polyurethane coating is between 30-50A, the surface of the finishing layer introduces a micro-texture design, nano titanium dioxide is added to the finishing layer, the photocatalytic component in the finishing layer gives the finishing layer a self-cleaning function, the coating thickness distribution of the finishing layer is optimized by finite element simulation, the thickness of the finishing layer is increased to 3.5mm in the central area, and the finishing layer is thinned to 2.5mm in the edge area. The aggregate of the high-strength lightweight aggregate concrete slab in the bearing layer is selected from ceramsite with a density of ≤1200kg / m3, the internal porosity of the bearing layer is controlled at 10%-15%, the bidirectional steel mesh in the bearing layer adopts HRB500E high-strength steel bars, the grid spacing in the bearing layer is optimized to 150mmx150mm, the reinforcement ratio in the bearing layer is increased to 0.8%-1.0%, and the bearing layer The structure has an embedded reinforcing rib, and an eight-shaped hidden beam is set at the four corners and the middle of the bearing layer. The disc spring group consists of 20-30 independent units. The thickness of a single disc spring is optimized to 25mm. The bearing capacity range of the disc spring is 50-200kN. The surface of the disc spring is chrome-plated. The closed-cell foam rubber isolation pad is made of EPDM rubber and polyurethane composite material. The closed porosity of the closed-cell foam rubber isolation pad is >95%, and the tensile strength of the closed-cell foam rubber isolation pad is >15MPa. The upper part of the closed-cell foam rubber isolation pad has a lower density to absorb high-frequency vibrations, and the lower part of the closed-cell foam rubber isolation pad has a higher density to enhance the low-frequency isolation effect. The interior of the viscous fluid damping cavity is filled with a silicon-based shear thickening fluid, and the silicon-based shear thickening fluid includes inorganic nanoparticles and polydimethylsiloxane. The viscous fluid damping cavity is equipped with a micro hydraulic proportional valve.

4. The intelligent floating floor system based on multi-level seismic isolation according to claim 2 is characterized by: The piezoelectric acceleration sensor network is expanded from a two-dimensional plane to a three-dimensional space. The sensor spacing within the piezoelectric acceleration sensor network is optimized to 0.5mx0.5mx0.5m. The piezoelectric acceleration sensor network is equipped with a MEMS gyroscope and a strain gauge. The piezoelectric acceleration sensor network is equipped with a wireless communication module.

5. The intelligent floating floor system based on multi-level seismic isolation according to claim 2 is characterized in that: Organic bentonite is added to the epoxy-based interface agent, the surface roughness Ra of the epoxy-based interface agent after curing is ≤10um, the bonding strength of the epoxy-based interface agent is >3MPa, the shear strength of the graphene-modified sealant is above 2MPa, and the weather resistance of the graphene-modified sealant is -40°C-85°C. The internal structure of the L-shaped EPDM rubber sound insulation sheet is designed to be honeycomb-shaped, the thickness of the L-shaped EPDM rubber sound insulation sheet is 10mm, and the labyrinth-type sound insulation sleeve is a multi-layer composite structure.

6. A method for constructing an intelligent floating floor based on multi-stage seismic isolation, using the intelligent floating floor system based on multi-stage seismic isolation according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Basic preparation; Step 2: Install a multi-stage seismic isolation device; Step 3: deploy an intelligent monitoring system; Step 4: Install the floating floor formwork; Step 5: tying steel bars and pouring concrete for the floating floor; Step six: Post-processing of floating floor.

7. The intelligent floating floor construction method based on multi-level seismic isolation according to claim 1 is characterized by: In step one, more specifically: the original structural floor of the building is thoroughly cleaned to remove impurities such as oil, dust, and loose concrete. A high-pressure spray gun is used to clean the floor to ensure that the surface is flat, dry, and clean. A laser level and a laser flatness meter are used for inspection to control the surface flatness error within ±5mm. Cracks, holes, and other defects in the floor are repaired with high-strength epoxy mortar or carbon fiber composite materials to ensure that the compressive strength after repair reaches C50 or above. The epoxy-based interface agent and organic bentonite are mixed in the specified proportion, and after mixing, they are allowed to stand for 15 minutes to defoam to ensure that the viscosity of the interface agent is moderate. Airless spraying or roller coating is used for construction, and the coating thickness is controlled at 3mm. Ensure that the interface agent is uniform and continuous without missing or dripping. After coating, set up a curing area and maintain an ambient temperature of 20+5℃ and humidity below 80%. The curing time is not less than 24 hours and the surface roughness Ra≤10um. Pre-embed L-shaped sound insulation sheets according to the perimeter of the floor slab, use a special adhesive to bond with the base layer and fix with stainless steel clamps. Use hot melt welding technology at the joints of the sound insulation sheets to ensure sealing. Fill the gap between the wall and the sound insulation sheet with sealant. The thickness is uniformly controlled at 2-3mm. The shear strength after curing is greater than 2MPa and the weather resistance is -40℃ to 85℃. Pre-embed multi-layer composite sound insulation sleeves at the pipeline crossing point, fill the sleeves with sound-absorbing material, and seal the sleeves at both ends to the wall. In step 2, more specifically: a 3mm thick elastic polyurethane coating with a Shore hardness of 30-50A and a photocatalytic component of nano-titanium dioxide with a content of 5%-7% is selected. The coating is applied by hot melt spraying or scraping. The thickness is dynamically monitored by a laser thickness gauge to ensure that the thickness of the center area reaches 3.5mm and the thickness of the edge area is 2.5mm. The surface micro-texture is processed by laser engraving technology with a texture depth of 0.5mm and a spacing of 2mm. High-strength lightweight aggregate concrete uses ceramsite and ultrafine mineral powder with a mix ratio of ceramsite: cement: mineral powder: water = 1:1.5:0.2:0.

4. A water reducer is added to control the slump ≤100mm. A standardized steel formwork is used, and the support system adopts a coupler-type steel pipe scaffolding. The formwork sealing strip uses an S-shaped compression sealing strip to prevent leakage. The two-way steel mesh HRB500E steel grid spacing is 150mmx150mm, the reinforcement ratio is 0.8%-1.0%, the tensile strength of the weld is >300MPa, and the wall corner is eight Before pouring the U-shaped hidden beam, steel anchor bars are set with an anchorage depth of 150mm and a pull-out strength of ≥15kN. Steam curing technology is used, and the humidity is controlled at 90%-95%, the temperature is 50+5℃, and the curing time is not less than 72 hours. The disc spring group adopts modular assembly, and the number of units is adjusted according to the floor load requirements. The chrome plating thickness of the spring surface is >10um. During installation, the spring positioner is used to ensure that the verticality and spacing error are ≤+5mm. The closed-cell foam rubber seismic isolation pad is made of pre-pressed blocks. The size of a single block is 500mmx500mmx50mm, and the gap at the joint is ≤2mm. After installation, the closed-cell foam rubber seismic isolation pad is increased in density through a vacuum compaction process. The deformation rate is <15% when the compressive stress is 50kPa. The damping cavity adopts a high-strength aluminum alloy cavity with a wall thickness of ≥3mm. A micro hydraulic proportional valve is embedded in the cavity. The silicon-based shear thickening fluid is a mixture of silica particles and PDMS matrix in a mass ratio of 3:7 and homogenized by ultrasonic dispersion.

8. The intelligent floating floor construction method based on multi-level seismic isolation according to claim 1 is characterized by: In step three, the following are more specific: a matrix arrangement is adopted, with the sensors fixed to the concrete surface using magnetic brackets, a vibration resistance of 220g, a gyroscope sampling frequency of 1024Hz, and a strain gauge resolution of 0.01%. The installation location is planned synchronously with the sensor network to avoid electromagnetic interference. LoRa or 5G communication protocols are used, with a data sampling period of ≤1s and a communication distance of ≥500m. An edge computing unit is installed inside the floating floor to perform real-time filtering, noise reduction, and feature extraction on the sensor data, reducing cloud transmission volume. Distributed cloud storage is used, and vibration data is stored in time series to support historical data query and trend analysis. In step four, more specifically: the formwork uses waterproof plywood, the surface is coated with a release agent, the support system uses adjustable steel brackets with a spacing of <1.2m, elastic sealing strips are used at the joints of the formwork to prevent leakage, and vibration holes and observation holes are reserved.

9. The intelligent floating floor construction method based on multi-level seismic isolation according to claim 1 is characterized by: In step five, more specifically: the thickness of the main reinforcement protective layer of the steel bars is 40mm, the spacing between the distribution bars is 100mm, the binding firmness meets the pull-out test ≥25kN, the concrete is high-performance commercial concrete, strength grade C50, mixed with 15% fly ash and 3% anti-cracking fiber, the slump is controlled at 160+20mm, and during construction, high-frequency vibrators are used for multi-point synchronous vibration, with a vibration time of 10-15s to avoid over-vibration or missed vibration.

10. The intelligent floating floor construction method based on multi-level seismic isolation according to claim 1 is characterized in that: In step six, more specifically: laser leveling technology is used on the floor surface, with a flatness error of ≤2mm, and the joints between the intelligent damping layer and the finishing layer are sealed to prevent air leakage.

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