960 results about "Sound barrier" patented technology

The invention discloses a control method and device for a mounting and dismounting integrated robot of a sound barrier, and relates to the field of robot control. According to the method, a digital twinborn model and a dynamic environment model are constructed according to original sensor data, and a current environment risk value is determined; a mounting or dismounting sequence is generated based on a sound barrier topology rule, and a motion path and a mechanical arm motion track are generated according to the digital twin model, the dynamic environment model and the mounting or dismounting sequence; rehearsing the motion path and the motion track of the mechanical arm in the digital twin model, and when a rehearsing result meets a preset requirement, generating an initial instruction based on the motion path and the motion track of the mechanical arm; the current clamping force is determined through an impedance control algorithm, the current hoisting parameter is determined according to the load weight, the initial instruction is adjusted according to the current clamping force, the current hoisting parameter and the current environment risk value to obtain a control instruction, and the control instruction is executed. By implementing the technical scheme provided by the invention, the mounting and dismounting efficiency is improved, and the operation safety is enhanced.

The utility model provides a splicing type sound barrier which comprises a plurality of stand columns and sound barrier unit plates, the stand columns are sequentially arranged, the sound barrier unit plates are inserted between the adjacent stand columns, each stand column comprises a bottom plate and two wing plates, the two wing plates are fixed to the bottom plate and arranged in parallel, and a left side plate and a right side plate are of concave-convex structures matched with each other. The upper side plate and the lower side plate are of concave-convex structures which are matched with each other. The adjacent sound barrier unit plates and the upper and lower adjacent sound barrier unit plates and the left and right adjacent sound barrier unit plates are spliced through concave-convex structures, so that webs in traditional H-shaped steel can be omitted, only the profile steel with two wing plates is adopted for fixing, and the situation that an H-shaped steel structure is adopted in a traditional structure is avoided; the width of each sound barrier unit plate must be matched with the distance between every two adjacent section steel, construction inconvenience and efficiency reduction can be caused by the fact that the width of each sound barrier unit plate is too large or too small, the sound barrier unit plates can have large size elasticity within a certain range, and the production efficiency and the installation efficiency are improved.

The invention discloses a carbon fiber composite material sound barrier forming device, and relates to the technical field of sound barrier forming, the carbon fiber composite material sound barrier forming device comprises a working bottom table and a first supporting column, the first supporting column is fixedly connected to the top surface of the working bottom table, an upper mold is installed on the lower surface of the top end of the first supporting column, a sound insulation barrier is arranged on the working bottom table, and an auxiliary assembly is arranged on the working bottom table; production and forming of the carbon fiber composite material sound barrier are divided into simultaneous operation of four stations with coherent processes, the four stations do not interfere with one another during operation, and the problems that in the traditional hot press forming process, equipment is in an idle state during cooling, demolding and other steps, four stations are adopted for simultaneous operation, and when one station is used for cooling and demolding, the equipment is not in an idle state are solved. Other stations can be used for machining, residue removal or release agent spraying, feeding and other operations, the equipment utilization rate is greatly improved, no obvious intermittency exists in the production process, and therefore more carbon fiber composite material sound barriers can be produced in unit time.

The partial or full dehydration of organic or inorganic matter containing water by induction of matter into a vacuum and processing matter through a specially designed acceleration channel is disclosed. The inducted matter accelerates in air from zero speed to sub-sonic speed to reach supersonic speed. As the material transitions the sound barrier, it is subject to acoustic shock waves and an instant negative pressure drop occurs. The sound waves disintegrate, disinfect the material and extract part or all moisture from any organic or inorganic material.

The embodiment of the invention discloses a noise reduction regulation and control method and device for a self-adaptive sound barrier and a medium, and relates to the technical field of noise reduction, and the method comprises the steps: collecting multi-source vehicle noise data which comprises current sound pressure signal time sequence data, preposed sound pressure signal time sequence data and preposed vehicle point cloud data, according to the front sound pressure signal time sequence data and the front vehicle point cloud data, determining a noise source position prediction result corresponding to a sound barrier front node so as to perform sound field prediction on the sound barrier node, and determining a corresponding sound field energy distribution thermodynamic diagram; according to a preset sensitive frequency band threshold value, a target noise high-frequency band needing to be offset is determined in the sound field energy distribution thermodynamic diagram, so that a reverse sound wave signal corresponding to a phase array offset module is generated, and the target noise high-frequency band is offset; and according to the current sound pressure signal time sequence data and the reinforcement learning strategy, determining dynamic sound absorption regulation and control parameters of the dynamic sound absorption module so as to absorb a low-frequency band.

The invention provides a sound barrier corrosion state identification method based on image and multi-sensor data fusion, and relates to the field of data processing. The method comprises the following steps: acquiring image data and multi-sensor data of a target area of a target sound barrier; extracting a first corrosion area feature from the image data; according to the multi-sensor data, constructing a second corrosion area feature by adopting GRU coding; based on the first corrosion region feature and the second corrosion region feature, calculating by adopting a space-time diagram neural network to obtain a corrosion risk score of the target region; and determining the corrosion state of the target sound barrier according to the corrosion risk score. By implementing the technical scheme provided by the invention, the accuracy of identifying the corrosion state of the sound barrier is improved.

The invention provides a laser plasma sound barrier and magneto-rheological antiknock array collaborative protection method. The method comprises the following steps: firstly, constructing a collaborative protection structure consisting of a laser plasma sound barrier layer and a magneto-rheological antiknock array layer; a shock wave leading signal is detected in real time and input into a preset multi-dimensional feature model, the model dynamically generates a protection strategy, and a sound barrier instruction and an anti-explosion instruction are output respectively. The laser plasma sound barrier layer outputs specific reverse sound waves according to a sound barrier instruction and attenuates shock waves through destructive interference; meanwhile, the magneto-rheological anti-explosion array layer instantaneously solidifies a magnetic field according to an anti-explosion instruction, and shock wave energy is efficiently absorbed. According to the laser plasma sound barrier and magneto-rheological anti-explosion array cooperative protection method provided by the invention, the cooperative protection structure and the preset multi-dimensional feature model are constructed, so that the cooperative effect of the sound barrier and the anti-explosion array is realized, the response speed to shock waves is increased, the energy processing efficiency is improved, and the adaptability and reliability of protection are enhanced.

The invention discloses an integrated photovoltaic sound barrier which comprises a single-face power generation photovoltaic sound barrier module, a sound barrier interaction module and a double-face power generation photovoltaic sound barrier module. The structures of the single-sided power generation photovoltaic sound barrier module, the sound barrier interaction module and the double-sided power generation photovoltaic sound barrier module are constructed to be stacked up and down to form a photovoltaic sound barrier body, so that full-frequency noise within the range of 200Hz-2000Hz is effectively absorbed. According to the photovoltaic sound barrier, the photovoltaic power generation function and the sound absorption and insulation noise reduction function of the photovoltaic sound barrier are integrated, through modular design and stacking assembly, the use area and the power generation efficiency of a photovoltaic assembly are effectively improved, the sound absorption frequency band is widened, and the noise reduction effect is improved.

The invention relates to a dynamic control method, system and device for a photovoltaic sound barrier and a medium, and the method comprises the steps: carrying out the dynamic adjustment of the transparency of a photovoltaic cell in the fixed semitransparent photovoltaic sound barrier according to the optimal coverage rate of the photovoltaic cell; according to the acoustic analysis model and the photovoltaic power generation model, obtaining a first inclination angle when the noise reduction effect of the rotary photovoltaic sound barrier is optimal and a second inclination angle when the photovoltaic power generation power of the rotary photovoltaic sound barrier is optimal; establishing a decision optimization model according to the first inclination angle, the second inclination angle and the optimal coverage rate of a photovoltaic cell in the fixed semitransparent photovoltaic sound barrier; and inputting the first inclination angle and the second inclination angle into a decision optimization model for optimization processing to obtain an optimal inclination angle, and controlling the rotary photovoltaic sound barrier to rotate to an optimal working angle based on the angle. The intelligent control degree of the photovoltaic sound barrier is improved, and the noise reduction effect and the power generation efficiency are both improved.

The utility model discloses a novel road sound barrier, and belongs to the technical field of sound absorption and insulation and noise reduction. The novel road sound barrier comprises connecting stand columns arranged at certain intervals and composite plates arranged between the adjacent connecting stand columns, the bottoms of the connecting stand columns are fixed to a base, each composite plate is provided with a metal shell formed by connecting a perforated panel, a back plate and an end keel, and sound absorption cotton / plates are arranged on the metal shells. An elastic supporting metal net is fixedly arranged between the back plate and the sound absorption cotton / plate; sound absorption holes are formed in the perforated panel; the end keel is of a rectangular frame structure and is fixedly connected with the edge of the panel with the holes and the edge of the back plate. The sound absorption device has the beneficial effects that the elastic supporting metal net can be conveniently mounted on the back plate and plays a role in stably supporting the sound absorption cotton / plate; the rainproof structure of the composite board can prevent rainwater from entering the composite board; the novel road sound barrier is convenient to install and construct, stable in structure and capable of meeting the long-time application requirement.

The invention discloses a low-frequency broadband sound absorption metamaterial structure based on metal foam and a metamaterial sound barrier, the metamaterial structure comprises a metal foam layer and a composite resonant sound cavity layer, and the metal foam layer and the composite resonant sound cavity layer are stacked; the composite resonance sound cavity layer comprises a mother cavity structure and a son cavity structure, the son cavity structure is embedded in the mother cavity structure, and the mother cavity structure and the son cavity structure are both provided with openings facing the metal foam layer, so that incident sound waves can enter the mother cavity structure and the son cavity structure after propagating through the metal foam layer; cavities of the primary cavity structure and the secondary cavity structure are one-way uniform-section cavities. The low-frequency and broadband high-efficiency sound absorption composite material is applied to the field of acoustic noise reduction, achieves low-frequency and broadband high-efficiency sound absorption performance, has high rigidity and strength and excellent environmental adaptability, can bear loads, is good in environmental tolerance and excellent in fireproof performance, is suitable for various complex and severe environments, ensures a long-term stable working state, is convenient to manufacture in batches at low cost, and has wide application prospects. And the economic feasibility is improved.

The embodiment of the invention discloses a sound barrier optimization method and device based on a noise source database and a medium, and relates to the technical field of sound barriers, and the method comprises the steps: collecting the multi-source noise time sequence data corresponding to a target road, carrying out the noise feature extraction and noise prediction based on the multi-source noise time sequence data, constructing the noise source database, and obtaining the noise source database; the noise source database comprises a real-time noise feature database corresponding to a current time node and a predicted noise feature database corresponding to a future time node; performing multi-period noise propagation simulation on the noise sensitive area of the target road through the real-time noise feature database and the predicted noise feature database, determining sensitive noise data corresponding to multiple time nodes, and determining a multi-period constraint condition corresponding to the sound barrier; and based on the multi-period constraint condition and a preset multi-objective optimization algorithm, determining a corresponding sound barrier design parameter solution set, so as to determine a sound barrier optimization strategy according to the design parameter solution set.

The invention discloses a sound barrier sound insulation characteristic evaluation method suitable for a real ship complex sound field, and belongs to the technical field of real ship sound barriers, and the method comprises the steps: arranging hydrophone arrays at acoustic mirror symmetry positions at two sides of a real ship fairing sound barrier to form an in-situ measurement pair; controlling the ship to sail at a plurality of navigational speeds, and synchronously acquiring sound pressure time domain signals on two sides; carrying out preprocessing and time-frequency analysis on the signals, and calculating sound pressure levels of a sound facing surface and a sound backing surface to obtain an in-situ sound pressure level difference; and based on the sound pressure level difference at different navigational speeds, analyzing the change rule of the sound insulation performance along with the frequency and the navigational speed, and carrying out comprehensive evaluation. In addition, by arranging a vibration sensor and a turbulence measuring device, path separation of structural sound and flow-induced noise is achieved, spatial coherence weighted average is introduced, and the accuracy and representativeness of evaluation under a complex sound field are improved. The method overcomes the limitations of laboratory test environment distortion and single working condition, and can truly and comprehensively reflect the actual sound insulation efficiency of the sound baffle in the dynamic navigation of a real ship.

A partial enclosure for inhibiting sound passing into and out of the partial enclosure includes an absorber-barrier or an absorber-barrier-absorber, each made from sound absorbing material and sound barrier material and arranged to form the partial enclosure. The enclosure also includes an adaptive frequency matched sound-masking system. The absorber-barrier or absorbed-barrier-absorber is positioned to block or inhibit unwanted sound from various positions of a source of the unwanted sound, or motion of the source of the unwanted sound. The adaptive frequency matched sound-masking system includes a sound generating device arranged on or in the partial enclosure to emit anti-noise signal to cancel or inhibit the unwanted sound.

The invention relates to a novel sound barrier plate, and belongs to the field of buildings and engineering. The formula comprises a bottom layer material formula and a surface layer material formula, wherein the bottom layer material formula comprises the following components in percentage by mass: 38-50% of diatomite; 15-30% of blast furnace slag; 5-12% of calcite; 2-6% of calcined talc; 2-5% of potassium feldspar; 3-8% of kaolin; 5 to 13% of bentonite; 5-10% of quartz; 2-6% of iron oxide red; 0.2%-0.8% of a foaming agent; 0.1 to 0.4 percent of a water reducing agent; the formula of the surface layer material comprises the following components in percentage by mass: 32-55% of perlite micro powder; 15-27% of calcined talc; 17 to 27% of bentonite; 4-10% of kaolin; 0.1-0.3% of a foaming agent; 0.1 to 0.4 percent of a water reducing agent; the preparation method of the sound barrier plate adopts a secondary material distribution forming process. The foamed ceramic composite sound barrier plate is of a double-layer structure and is provided with the sound insulation back plate; and through high-temperature firing, layering and cracking are avoided in use. The bottom-layer material replaces a base plate, so that the process production cost is reduced; the surface of the bottom layer material is flat after foaming and firing, cutting is not needed, and material waste is reduced. According to the invention, blast furnace slag is used as a raw material, which is an effective way for turning blast furnace slag into wealth.

The invention provides a production method of a road sound barrier with light weight, high strength, corrosion resistance and strong sound absorption, and belongs to the technical field of road sound barriers, the production method comprises the following steps: collecting a traffic noise sample by using a high-precision microphone array, extracting noise spectrum characteristics by using a Noi seSpecNet model, and determining that the main noise frequency band is 500-4000 Hz; optimal perforation parameters are calculated through the model; accurately perforating the UHPC board according to the optimized parameters; the perforated UHPC board, basalt fiber cloth, a through-hole ceramic board, a sound insulation felt and other materials are bonded according to the sequence and technology to form a multi-layer composite structure; curing and curing in a constant-temperature and constant-humidity environment; carrying out acoustic performance testing; and finally, the qualified sound barrier unit is installed on a foundation structure and subjected to protection treatment. According to the method, the technical problem that a road sound barrier in the prior art is difficult to realize efficient sound absorption for traffic noise of a specific frequency band is solved.

The utility model relates to an angle-adjustable photovoltaic sound barrier device. The angle-adjustable photovoltaic sound barrier device comprises sound barrier equipment, a photovoltaic assembly, a first adjusting assembly, a second adjusting assembly and a damping adjuster. One end of the first adjusting assembly is connected with the sound barrier equipment, and the other end is rotationally connected with the photovoltaic assembly; the second adjusting assembly and the first adjusting assembly are arranged at an interval in the height direction of the photovoltaic assembly, and the second adjusting assembly comprises a second mounting piece and a sliding rod which are rotationally connected with each other; one end, deviating from the sliding rod, of the second mounting part is fixedly connected with the sound barrier equipment; the sliding rod is slidably connected with the photovoltaic module; one end of the damping regulator is connected with the sound barrier equipment, and the other end is connected with the slide bar. When the mounting angle of the photovoltaic module relative to the sound barrier equipment needs to be adjusted, the change of the mounting angle can be more stable through the damping effect of the damping adjuster; meanwhile, after the adjustment is completed, the installation stability of the photovoltaic module relative to the sound barrier equipment is relatively high through the supporting effect of the damping adjuster.

The utility model provides a sound barrier plate processing device, including a rotating disk, a processing platform and a connecting rod, wherein the connecting rod is located on one side of the processing platform and is movably connected by a connecting shaft installed therebetween, and an electric push rod is nested and installed on the outer side of the rotating disk. The electric push rod is telescopically operated to adjust the bending angle of the bending plate and the sound barrier plate, so that the pressure roller can transfer the sound barrier plate to the bending plate 10 for bending, and the rotating rod and the limiting rod can be used to clamp and limit the two sides of the sound barrier plate and transport it for use, and the operation of the telescopic rod allows the pressure roller to fit and clamp the sound barrier plate, and the pressure block is used to extrude and punch the sound barrier plate to improve the fit of the pressure roller to the sound barrier plate and embed the limit, thereby improving the bending effect of the bending plate when pushing the sound barrier plate to bend, and at the same time improving the bending efficiency, and at the same time, the sound barrier plate is squeezed and punched by the pressure block to improve the sound insulation and noise reduction effect of the sound barrier plate when it is used.

1. Name of this design product: Integrated sound barrier guardrail. 2. Application of this design: In the field of traffic safety facilities, it is used for isolation, protection, and prevention of road noise. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to a photovoltaic sound barrier device. The photovoltaic sound barrier device comprises a photovoltaic assembly, sound barrier equipment and a mounting assembly. The sound barrier equipment comprises two sound barrier plates oppositely arranged in the first direction and at least two sets of supporting assemblies installed between the two sound barrier plates at intervals. The mounting assembly is arranged on the side, away from the other sound barrier plate, of one sound barrier plate in the first direction, and the mounting assembly is connected between the supporting assembly and the photovoltaic assembly. When the photovoltaic sound barrier device is used, the supporting assembly is connected with the photovoltaic assembly through the mounting assembly. According to the mounting assembly, the photovoltaic assembly can be directly hung on the periphery of traditional sound barrier equipment, so that the traditional sound barrier equipment in use or processed traditional sound barrier equipment does not need to be directly replaced with a photovoltaic sound barrier product with relatively high cost, and only improvement is needed; compared with the replacement cost, the cost is lower, and the resource waste is also reduced.

The invention belongs to the technical field of underwater acoustic detection. The invention provides an underwater target motion state evaluation method based on a distributed sound barrier system. According to the embodiment of the invention, the two-dimensional coordinate of the target passing through the sound barrier for the first time, the target speed and the navigation angle are used as to-be-estimated parameters, and a parameter estimation problem is converted into a linear equation set solving problem; and substituting the delay inequality of the target crossing the sound barriers into the equation, solving the target motion state estimation, and further calculating the distance between the target and the sound source when the target crosses each sound barrier. Under the lowest standard that the product of the number of the sound sources and the number of the receivers is not smaller than 4, the method can be used for any sound transmission system composed of the multiple sound sources and the receivers, universality is higher, and the state estimation result is accurate and reliable.

The utility model belongs to the technical field of noise reduction barriers, and particularly relates to a sound barrier with a multistage noise reduction structure, which comprises a sound barrier plate, a noise reduction device is arranged in the sound barrier plate, and a splicing device is arranged on the right side of the sound barrier plate. According to the sound barrier with the multi-stage noise reduction structure, noise waves are absorbed and converted into kinetic energy through the noise reduction springs, noise is reduced, noise is further absorbed through noise reduction cotton on the inner wall of the noise reduction pipe, and the noise reduction effect is improved; meanwhile, an extension spring is compressed, then a splicing block on the other sound barrier plate is inserted into a splicing groove in the right side of the first sound barrier plate, then an insertion rod is loosened, the extension spring is reset under the self-elasticity effect, and therefore the insertion rod is pulled to be inserted into an insertion hole in the splicing block, and installation of the two sound barrier plates is completed rapidly; and the installation efficiency is improved.

The invention relates to the technical field of bridges, in particular to a bridge and sound barrier integrated structure for driving in a beam. A bridge and sound barrier integrated structure for driving in a beam comprises a box beam, the box beam is of a concrete structure, the interior of a box beam cavity of the box beam is used for driving of a train, a box beam bottom plate is provided with a bottom plate cross beam, the bottom plate cross beam protrudes out of a box beam web plate, and the bottom plate cross beam is used for anchoring a stay cable or a sling; the track is arranged on a bottom plate of the box girder, and the track extends in the length direction of the box girder. Compared with the prior art that the train runs on the bridge floor and a sound barrier needs to be arranged on the bridge floor, the train of the structure can directly run in the box girder cavity, the step of arranging the sound barrier on the bridge floor is omitted, and the construction efficiency is improved. And as no sound barrier is arranged, the situation that the sound barrier is damaged is avoided as far as possible, and therefore potential safety hazards caused by damage of sound barrier components in the long-term operation process are avoided.

The invention discloses a sound barrier-based viaduct noise radiation prediction method and device and a medium, and relates to the technical field of noise radiation prediction, and the method comprises the steps: obtaining noise source data, and carrying out the noise feature extraction of a noise source state of the noise source data, so as to obtain a noise source feature matrix; obtaining dynamic environment data, and performing environment key parameter analysis on the dynamic environment data to determine environment parameters; based on the noise source feature matrix and the environmental parameters, a noise radiation path is obtained through mixed sound ray tracking; according to the noise radiation path, initial arrangement data of the sound barrier are determined through sound barrier interception configuration; and carrying out sound barrier interception optimization on the initial arrangement data of the sound barrier to obtain a multi-source sound barrier configuration strategy. According to the method, the technical problem that noise radiation prediction in a viaduct environment cannot meet sound barrier arrangement is solved.

The invention provides a sound barrier multi-risk fusion identification method and device based on deep learning, and relates to the field of data processing. The method comprises the following steps: acquiring detection data for target sound barrier risk detection; determining risk assessment data corresponding to the risk factors according to the detection data; carrying out data fusion on the risk assessment data by adopting a deep learning model to obtain risk category probability distribution; and determining whether the target sound barrier has a risk based on the risk category probability distribution. By implementing the technical scheme provided by the invention, the accuracy of sound barrier risk identification can be improved.

The invention discloses a wind power generation sound barrier, and relates to the technical field of sound-absorbing barriers, and the wind power generation sound barrier comprises a sound barrier which is used for being installed beside an external road and used for absorbing noise generated by motor vehicle driving; a plurality of groups of sound barriers can be spliced to define a length-adjustable sound absorption structure; airflow generated when a motor vehicle passes through the sound barrier drives the generator to operate and generate electricity through the driving wheel, the turbine-shaped blades are driven by the airflow generated when the motor vehicle runs to rotate, kinetic energy which is originally wasted is converted into electric energy, and energy recycling is achieved; the total length of the sound barrier and the density of the generator set can be flexibly adjusted according to the road length and the traffic flow through the combination of the spliced sound barrier unit and the multiple groups of independent power generation units (driving wheels and generators), and the requirements of different scenes are met.

The invention provides a modularized installation and construction method for a semi-closed sound barrier of a high-speed railway, and belongs to the technical field of semi-closed sound barriers of high-speed railways. Comprising a road surface, sound absorption barriers are arranged on the left side and the right side of the road surface respectively, high-precision sound pressure sensors are arranged on the inner side surfaces, close to the left side and the right side, of the sound absorption barriers respectively, and a broadband frequency analyzer is connected to the bottoms of the high-precision sound pressure sensors. A solar photovoltaic power generation function and a noise reduction function of the sound barrier are combined by arranging the photovoltaic panel on the outer side of the arc-shaped sound absorption barrier, in addition, the high-precision sound pressure sensor, the broadband frequency analyzer and the intelligent control system are fused into an intelligent monitoring sound barrier module through the intelligent technology, and a noise monitoring sensor, an environment monitoring sensor and other sensors are integrated; the noise level, the air quality, the temperature, the humidity and other environmental parameters around the sound barrier are monitored in real time, data are transmitted to the management center, and the performance state of the sound barrier and the change of the surrounding environment are known in time through data analysis.

The invention relates to the technical field of multi-layer material preparation, in particular to a high-light-transmittance weather-proof impact-resistant striped sound insulation board. The problem that transparency, weather resistance and sound insulation effect of a traditional stripe material are difficult to consider at the same time is solved. The light scattering and absorption center is reduced and high transparency and low haze are realized through reactive extrusion of the recycled material, combination of high-temperature adsorption activated carbon, multi-stage high vacuum and deep purification of a reactive decolorizing agent, and matching of transparent dispersion diffusion master batch and a compatilizer. The surface layer adopts the core-shell weather-resistant master batch and the secondary high-energy UV fluorosilicone curing coating for double shielding of ultraviolet and inhibition of photodegradation and yellowing; styrene-maleic anhydride damping resin is introduced into the middle layer, and uniform inclined micropores and asymmetric stripes formed by supercritical CO2 are combined, so that the medium and low frequency sound insulation index is improved; the bottom layer is repaired and guaranteed to be durable in impact resistance by virtue of a core-shell toughening agent and molecular chain extension; the defects of traditional products are overcome, and the service life requirement of sound barriers for expressways and rail transit is met.

The utility model discloses an environment-friendly fly ash ceramic sound barrier structure which comprises a supporting frame, the supporting frame is of a U-shaped structure, sound insulation pads are fixed to the two sides of the outer wall of the supporting frame, connecting parts are further arranged on the two sides of the outer wall of the supporting frame, and a sound insulation plate assembly for sound insulation is arranged on the inner wall of the supporting frame. According to the utility model, fly ash is used in the fly ash ceramsite plate and the fly ash ceramsite honeycomb layer, so that the amount of fly ash used when each sound insulation plate assembly is manufactured is increased, the fly ash is convenient to recycle, the production cost is reduced, and the production efficiency is improved. The harm to the environment is reduced.

The present invention discloses a rail transit sound barrier based on phononic crystal cells, which is divided into several cells of equal volume by dividing modules; a resonance cavity with an opening on one side is embedded in each cell; one side of the opening of the resonance cavity faces the sound source; the opening extends outward in a trumpet shape to increase the sound receiving area; several phononic crystal cells that do not contact each other are fixedly arranged in the resonance cavity; the resonance cavity in the present invention can achieve triple acoustic performance improvements, namely sound insulation, sound elimination and sound absorption: its overall appearance belongs to a Holmhelix resonance cavity, which is itself a good sound elimination device, which is the first sound elimination; the trumpet-like opening structure on the sound source side is conducive to the introduction of sound waves, and the phononic crystal cells are arranged inside, which is the second sound insulation of the device; the tail adopts a boss with the same size as the end of the trumpet mouth, which is conducive to the flow of sound waves, and a certain thickness of sound-absorbing rock wool is used on the inner wall of the tail, which is the third sound absorption.