CN105386415A - Ecological sound barrier device and greening isolating device used for municipal road - Google Patents
Ecological sound barrier device and greening isolating device used for municipal road Download PDFInfo
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Abstract
The invention discloses an ecological sound barrier device and a greening isolating device used for a municipal road, comprising multiple sound barrier units, wherein each sound barrier unit comprises a sound barrier body capable of absorbing noise and a Y-shaped component arranged at the top end of the sound barrier body; and the sound barrier body is provided with multiple planting boxes used for planting plants in a stacking way from bottom to top. The ecological sound barrier device integrates functions of sound absorption materials, sound absorption construction, novel modeling, plant planting, rainwater collecting and scientific irrigation system, solar photovoltaic power generation, and LED illumination, can be applied to urban environments with noise reduction requirement, such as roads and bridges, and achieves excellent effect of noise elimination treatment. The ecological sound barrier device can also be used as a vertical greening isolation device, which is arranged in the isolating area of motor vehicles and non-motor vehicles of urban roads.
Description
Technical field
The present invention relates to sound barrier device technical field, in particular a kind of ecological type sound screen device and the greening spacer assembly for town road.
Background technology
Along with the continuous quickening of Urbanization in China, between city and city, urban inner establishes traffic road gauze efficiently, these highway, roads etc. unavoidably will through the residential communitys of population concentration when building, and the traffic noise produced brings serious interference to the work of near roads resident, life, study.Vehicle travels the dust kicked up and also brings certain pollution to the air quality of urban environment simultaneously.
China, in the practical measures reducing traffic noise, is still in the starting stage.Tradition sound barrier is mainly and custom-designedly stands on noise source and by the acoustics baffle between sound plate, it normally designs for a certain particular sound source and specific protective position (or region).Be embodied in noise barrier structure form comparatively single, main metal and the plastic plate of adopting carries out sound insulation protection, can not reach good noise reduction.
The major technique of acoustic current barrier reaches noise reduction object by the structure of acoustics baffle, material and surface coating, generally uses vertical type sound barrier.Main Types has: vertical type sheet material sound barrier, cement noise barrier, greenly plant noise barrier, novel wood cement board sound barrier and composite material sound barrier etc.There is noise reduction and have much room for improvement in the sound barrier of these types, cost is higher, and construction is complicated, and difficult in maintenance, be unfavorable for environmental protection, color is stiff, thick and heavy oppressive, needs the defects such as regular nourishment vegetation.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of ecological type sound screen device and the greening spacer assembly for town road, be intended to overcome the defects such as existing Urban Road Noise Barrier principle is single, function is comparatively limited to, Space is general, to improve sound barrier noise reduction, have the objects such as ecoscape effect concurrently.
Technical scheme of the present invention is as follows:
A kind of ecological type sound screen device, wherein, comprise multiple sound barrier unit, described sound barrier unit comprises the sound barrier body of an Absorbable rod noise; Described sound barrier body is stacking from bottom to up arranges multiple planting box for planting plants, also comprises the Y shape assembly being arranged on described sound barrier body top; The bottom of described sound barrier body is also provided with the aqua storage tank for storing the moisture from the infiltration of sound barrier body.
Described ecological type sound screen device, wherein, described planting box comprises water storehouse, and is symmetricly set on the plantation storehouse of the relative both sides of described water storehouse; Base in described water storehouse is provided with the bleed off pipe being highly less than water storehouse height, described water storehouse is just provided with water storehouse weep hole on the sidewall in described plantation storehouse, and the distance between bottom described water storehouse weep hole and water storehouse equals the height of described bleed off pipe; Described plantation storehouse comprise set gradually from bottom to up remaining water accumulation layer, lightweight medium storehouse and solid Tu Zhongzhijiezhicang; Described plantation storehouse is also provided with the sound absorbing plate for absorbing sound.
Described ecological type sound screen device, wherein, described Y shape assembly comprises a vertical portion and is symmetricly set on two rakes on top, described vertical portion; The angle of described rake and described vertical portion is adjustable and change.
Described ecological type sound screen device, wherein, the inwall of described rake is provided with single-crystalline-silicon solar-cell panel; The bottom of described rake is provided with the dmp filter groove for filtering rainwater; Described sound barrier body is provided with the LED light device for throwing light on, described LED light device is electrically connected with described single-crystalline-silicon solar-cell panel.
Described ecological type sound screen device, wherein, the outer wall of described rake is also provided with the first Active Absorption device group for absorption of noise; Described sound barrier body is also provided with the second Active Absorption device group for absorption of noise.
Described ecological type sound screen device, wherein, is provided with one for water to be evacuated to the tubing pump of the planting box on sound barrier body top by feed pipe from aqua storage tank in described aqua storage tank; The water side place of described feed pipe is provided with the flow control valve for controlling uninterrupted when water flows out.
Described ecological type sound screen device, wherein, described aqua storage tank is also provided with gutter.
Described ecological type sound screen device, wherein, the bottom of the remaining water accumulation layer of described planting box is provided with the outfall of discharging excess water in plantation storehouse.
Described ecological type sound screen device, wherein, also comprises:
The control module of the described rake of Y shape assembly and the angle of described vertical portion is started or stoped and controls for controlling the first Active Absorption device group and the second Active Absorption device group according to the sound decibel number value of current detection.
For a greening spacer assembly for town road, wherein, described ecological type sound screen device is comprised.
The invention provides a kind of ecological type sound screen device and the greening spacer assembly for town road, comprise multiple sound barrier unit, described sound barrier unit comprises the sound barrier body of an Absorbable rod noise; Described sound barrier body is stacking from bottom to up arranges multiple planting box for planting plants, also comprises the Y shape assembly being arranged on described sound barrier body top; The bottom of described sound barrier body is also provided with the aqua storage tank for storing the moisture from the infiltration of sound barrier body.The new technologies such as the integrated novel sound absorption material of the present invention, sqound absorption construction, Novel modeling, planting, rainwater-collecting and scientific application of irrigation system, solar energy power generating, LED illumination, in one, achieve the excellent effect of stress release treatment process.
Accompanying drawing explanation
Fig. 1 be when noise barrier is not set in prior art traffic noise propagate acoustic pressure arbitrarily downgrade branch figure.
Fig. 2 is that acoustic pressure that when adopting erect type sound barrier to carry out noise reduction in prior art, traffic noise is propagated is arbitrarily downgraded branch figure.
Fig. 3 is the elevation of ecological type sound screen device of the present invention preferred embodiment.
Fig. 4 is the lateral view of ecological type sound screen device of the present invention preferred embodiment.
Fig. 5 is the top view of ecological type sound screen device of the present invention preferred embodiment.
Fig. 6 is the longitudinal plan of planting box and sound barrier body in ecological type sound screen device of the present invention.
Fig. 7 be ecological type sound screen device of the present invention only adopt multiple wedge structure acoustic pressure arbitrarily downgrade branch figure.
Fig. 8 a is top folding wall-shaped sound barrier noise reduction sound pressure level distribution map, Fig. 8 b is T-shaped circular arc top structure sound barrier noise reduction sound pressure level distribution map, Fig. 8 c is Y shape branch type sound barrier noise reduction sound pressure level distribution map.
Fig. 9 is the sound pressure level distribution map of ecological type sound screen device of the present invention when adopting multiple wedge structure and Y shape assembly.
Figure 10 is diffraction sound schematic diagram.
Figure 11 is that sound barrier unit height equivlent calculates schematic diagram.
Figure 12 is irrelevant line source weighted sound barrier diffraction acoustic attenuation curve map.
Figure 13 is ground absorption acoustic attenuation curve map.
Detailed description of the invention
The invention provides a kind of ecological type sound screen device, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
At present, in the urban environment such as road, bridge, vehicle flowrate is all comparatively large, noise severe overweight.When not carrying out noise reduction process to noise, the situation of analogue noise propagation can be carried out according to acoustic software.
When simulating the noise transmission not adding sound barrier in acoustic software, first, level of noise when not adding sound barrier should be calculated, simulation process is conformed with the regulations requirement.Fig. 1 is the situation that when not arranging noise barrier, traffic noise is propagated.
For more intuitively checking level of noise distribution when not setting up sound barrier, table 1 is listed in the distribution of the level of noise of main node on the section vertical with sound barrier.
Table 1
From table 1, along with the increase of Distance geometry height, noise sound reduces gradually, and at distance sound barrier 50m, during height 2m, with 10m distance, height 2m compares, and level of noise nature reducing amount is about 6.1dB.
Concrete, available insertion loss evaluates the noise reduction of analogue simulation.Insertion loss (IL) refers to as installing before and after sound barrier in the difference recording sound pressure level by sound point place when keeping noise source, landform, ground and weather conditions constant.Shown in (1):
IL＝△Ld-△Lt-△Lr-(△Ls，△LG)max(1)
In formula (1), IL represents insertion loss, and △ Ld represents diffraction acoustic attenuation, and △ Lt represents transmission acoustic attenuation, and △ Lr represents that reflected sound is decayed, and △ Ls represents obstruction acoustic attenuation, △ LG---ground absorption acoustic attenuation.
In order to noise reduction process in prior art, the normal erect type sound barrier that adopts carrys out noise reduction.When adding the noise transmission of sound barrier by acoustic software simulation, the noise reduction simulated sound obtained arbitrarily downgrades distribution as shown in Figure 2.
Can obtain from Fig. 1 and Fig. 2, when arranging erect type sound barrier and not arranging sound barrier, noise reduction has lifting.
In order to improve the noise reduction of sound barrier, the invention provides a kind of ecological type sound screen device.
Please also refer to Fig. 3-Fig. 6, wherein Fig. 3 is the elevation of ecological type sound screen device of the present invention preferred embodiment, Fig. 4 is the lateral view of ecological type sound screen device of the present invention preferred embodiment, Fig. 5 is the top view of ecological type sound screen device of the present invention preferred embodiment, and Fig. 6 is the longitudinal plan of planting box and sound barrier body in ecological type sound screen device of the present invention.As shown in figures 3 to 6, described ecological type sound screen device comprises multiple sound barrier unit, described sound barrier unit comprises the sound barrier body 100 of an Absorbable rod noise, described sound barrier body 100 is stacking from bottom to up arranges multiple planting box 300 for planting plants, also comprises the Y shape assembly 200 being arranged on described sound barrier body 100 top; The bottom of described sound barrier body is also provided with the aqua storage tank 400 for storing the moisture from the infiltration of sound barrier body.During concrete enforcement, described sound barrier body 100 be two just to the i iron arranged, and by the planting box 300 level serial connection that same row arranges by antilift wire, and many row's planting boxes 300 are stacking from the bottom to top, form ecological type sound screen device as shown in Figure 3.
The mechanism of the device of ecological type sound screen described in the present invention noise reduction introduces after sound barrier between noise source and acceptance point, and sound wave just must can pass to acceptance point by diffraction, and thus acoustic propagation path lengthens, thus causes the reduction of noise.When the sound wave that noise source sends runs into described ecological type sound screen device, it will be propagated along three paths: the top diffraction that a part crosses described ecological type sound screen device arrives by sound point; A part penetrates described ecological type sound screen device and arrives by sound point; A part produces reflection on described ecological type sound screen device wall.
The reflection of usual sound barrier and sound absorption construction single, limit by wall thickness in addition, the finite thickness of the cavity that absorbs sound.Therefore for the traffic noise based on medium and low frequency, its sound sucting band bandwidth sum frequency is just restricted.If multiple wedge structure installs sound absorption material additional at surface location, then wedge shape inside forms variable cross-section and vertically plants chamber.Planting box thickness, owing to not limiting by wall thickness, will increase and absorb the effect of low-frequency noise, and the irregular section of planting box then produces effect preferably to increase absorption band bandwidth, thus the noise reduction of sound shadow region after improving sound barrier.The relation of its resonance frequency and cell size can be determined by the cavity resonance computational methods in conventional acoustic theory.
Below described ecological type sound screen device is made and describing in more detail.
Shield the design of honorable layer: planting box 300 uses novel sound material one-body molded, from the bottom to top the multiple wedge structure of stacking formation, and Computer simulation results shows this multiple wedge structure and has good noise reduction relative to general erect type sound barrier.Wherein, on the horizon of distance ground 2m, the outer 30m distance of sound barrier can obtain the insertion loss of 14.5dB, and have the additional insertion loss of 4.3dB compared with same position upright ideophone barrier, noise reduction improves 6.15%.
Concrete, when being simulated the noise transmission of the sound barrier of multiple wedge structure by acoustic software, the noise reduction simulated sound obtained arbitrarily downgrades distribution as shown in Figure 7.
As can be seen from Fig. 2 and Fig. 7, the noise profile region of the sound barrier of erect type sound barrier and the multiple wedge structure of employing is similar, and after sound barrier, the low value of sound pressure level appears in the lower left corner and the lower right corner; Lower right corner sound pressure level is presented minimum, the trend increased gradually to upper left side in sound shadow region noise profile; But after sound barrier 2.5m to 12.5m scope in, still there is slightly high sound pressure level in lower position.
In order to represent the noise reduction of sound barrier more accurately, the insertion loss in formula (1) can be adopted to evaluate the noise reduction of analogue simulation.
Table 2 lists multiple wedge shape sound barrier in different distance such as 10m, 20m, 30m, 40m, 50m, and insertion loss within the scope of height 2 ~ 20m, the insertion loss listed is data in sound shadow region.For ease of comparing, the noise reduction of erect type sound barrier is listed file names with.
Table 2
From table 2, no matter in any direction and height, multiple wedge shape all has noise reduction more good than erect type sound barrier, as at height 2m, the insertion loss of distance 50m position reaches 14.5dB, exceed 4.3dB than erect type sound barrier analog result 10.2dB, the highest additional noise reduction effect reaches 4.8dB.If describe additional attenuation amount using road noise source sound power level as precondition, then additional attenuation amount will meet and exceed 24dB.
At 2m height, the insertion loss of multiple wedge shape sound barrier along with the increase change of distance little; At height 5 ~ 14m, become large along with distance increases insertion loss, highly more High variation is more obvious.This is because the change of sound barrier path difference is relevant with Distance geometry height.At lower position, the change of path difference increases with distance and slightly reduces, and changes not obvious, and therefore insertion loss change is not obvious.And when height is higher than 3.5m, path difference increases with distance and becomes large, therefore insertion loss also becomes large thereupon.
From analog result, multiple wedge shape has good noise reduction, and to be noise when propagating to be stopped by multiple wedge shape and the resonance sound-absorbing of wedge shape inside from the sound wave of ground return reason, thus increase the insertion loss of multiple wedge shape.
Top design: described sound barrier body 100 top arranges Y shape assembly 200.Described sound barrier body 100 top, except adopting Y shape assembly, also can adopt top to roll over wall-shaped and T-shaped circular arc top structure.
Distributed respectively as shown by figures 8 a-8 c by the noise reduction sound pressure level of acoustic software simulation top folding wall-shaped sound barrier, T-shaped circular arc top structure sound barrier and Y shape branch type sound barrier.
As can be seen from Fig. 8 a-8c, sound shadow region after sound barrier, due to different sound barrier top structures, the sound pressure level formed is distributed with comparatively significantly difference, wherein the comparatively low sound pressure levels distribution level of top knuckle type, Y type branch type is clearly more demarcated, comparatively obvious with the relation of distance, namely distance is far away, and sound pressure level is lower; In the height direction, the part that sound pressure level is lower in height increases with the increase of distance, namely also can obtain certain noise reduction in higher position.As can be seen from Figure 11 c, the lower subregion of noise sound is in highly lower position.Particularly concentrate on the position being highly less than 3.5m.
Apart within the scope of sound barrier 2.5m after sound barrier, sound pressure level is lower, particularly highly not higher than the position of 2m.In 2.5m to 10m scope, in lower position, sound pressure level progressively raises on the contrary, beyond 10m in larger distance range, the increase of sound pressure level with distance and the decline of height, in the trend of successively decreasing gradually, in the lower right corner, i.e. 50m distance, the position parallel with road surface, has minimum sound pressure level.Several different sound barrier top structure all has similar trend.
For analyzing noise profile situation more accurately.The particularly size of noise reduction, also calculating apart from sound barrier is 10m, 20m, 30m, 40m, 50m distance, is highly 2m ~ 20m, is spaced apart the insertion loss of the difference of 3m.
Table 3 is noise reductions of top folding wall-shaped, Y shape branch type and T-shaped circular arc top structure sound barrier each point sound barrier when not having sound absorption material.Consider Gao border, sound shadow region distance after sound barrier different and highly different, the maximum height of following table changes with distance and changes.For the ease of comparing noise reduction, table 3 also list the noise reduction value of erect type sound barrier.
Table 3
Can be seen by table 3, sound barrier insertion loss increases with highly increasing.On range direction, at 2m height, insertion loss increases with distance and reduces, but change is little.And height more than 5m increases with distance and increases.The reason producing the above results is path difference, and with highly increasing, path difference reduces, and diffraction acoustic energy reduces, and insertion loss diminishes thereupon.In the change of range direction, when lower than sound barrier height, increase path difference with distance and diminish, thus insertion loss diminishes; When higher than sound barrier, path difference increases with distance and becomes large, thus insertion loss becomes large.
As can be seen from Table 3, in highly lower position, be preferably T-shaped circular arc type sound barrier in each height noise reduction of different distance, as being highly 2m, when distance is 30m, simulation noise reduction is being 12.2dB, compared with erect type, additional insertion loss reaches 2.4dB.Compared with T-shaped circular arc type sound barrier, Y shape branch type sound barrier is lower slightly in the noise reduction of lower position, and as the noise reduction at height 2m, distance 30m place, Y shape branch type sound barrier insertion loss is 11.3dB, 0.9dB lower than T-shaped circular arc type.But still it is better than erect type sound barrier anti-acoustic capability.The noise reduction of top folding wall-shaped sound barrier is compared with the upright ideophone barrier of equal height, anti-acoustic capability raising is also not obvious, as distance 30m, during height 2m, top folding wall-shaped sound barrier is compared with erect type sound barrier, additional insertion loss is only 0.2dB, and it is 0.2 ~ 0.3dB that other Distance geometry height adds insertion loss scope.
As can be seen from above data analysis, T-shaped circular arc type sound barrier has good anti-acoustic capability in highly lower position, and along with being highly increased to more than 2m, anti-acoustic capability declines very many.As when distance is 30m, height 2m noise reduction is 12.2dB, and when being highly 5m, noise reduction reduces to 5.1dB, and insertion loss slippage reaches 7.1dB.And Y shape branch type sound barrier is at distance 30m, when height is increased to 5m from 2m, insertion loss reducing amount is 3.3dB.Therefore, the comparison of T-shaped circular arc type sound barrier is applicable to the Noise measarement that equipotential on both sides of the road puts lower.
And Y shape branch type sound barrier still has good noise reduction at higher height, with increasing of height, insertion loss declines minimum.As in 50m distance, the position of height 20m, insertion loss is than T-shaped circular arc type sound barrier height 1.4dB.When measuring point height is elevated to 20m by 2m, Y shape branch type sound barrier insertion loss variable quantity is 7.9dB.T-shaped circular arc type sound barrier insertion loss variable quantity is 10.2dB.Therefore Y shape branch type sound barrier is when highly increasing, and insertion loss reducing amount is less, compares and is applicable to higher building on both sides of the road, namely still has good noise reduction in higher position.Therefore the body 100 of sound barrier described in the present invention top arranges Y shape assembly 200, still has good noise reduction in high height.
In described ecological type sound screen device of the present invention, when the planting box 300 multiple wedge structure of stacking formation from the bottom to top, and when described sound barrier body 100 top arranges Y shape assembly 200, the sound pressure level distribution map obtained after being simulated by acoustic software as shown in Figure 9.
As can be seen from Figure 9, the noise sound at sound barrier rear portion forms different levels behind sound shadow region, minimum in the lower right corner.In order to represent the noise reduction of sound barrier more accurately, the insertion loss in formula (1) can be adopted to evaluate the noise reduction of analogue simulation.
Table 4 lists described ecological type sound screen device of the present invention in different distance such as 10m, 20m, 30m, 40m, 50m, and insertion loss within the scope of height 2 ~ 20m, the insertion loss listed is data in sound shadow region.
Table 4
Table 5 list only have employed multiple wedge structure sound barrier device in different distance such as 10m, 20m, 30m, 40m, 50m, height 2 ~ 20m within the scope of insertion loss, the insertion loss listed is data in sound shadow region.
Table 5
Table 6 list only have employed Y shape assembly sound barrier device in different distance such as 10m, 20m, 30m, 40m, 50m, height 2 ~ 20m within the scope of insertion loss, the insertion loss listed is data in sound shadow region.
Table 6
Compared with table 5 and table 6 from table 4, the noise reduction of combined sound barrier simulation has the feature of two kinds of barriers concurrently.Fashion is used alone than two kinds of noise barrier structures in lower region noise reduction, as known from Table 4, high at 2m, the insertion loss of 10m distance reaches 17.8dB, than adopting separately the sound barrier of multiple wedge structure to exceed 3.4dB, exceed 5.3dB than adopting separately the simulation insertion loss of the sound barrier of Y shape assembly.Visible anti-acoustic capability is greatly improved.But when higher than more than 5m height, compared with sound absorption cavity type sound barrier, noise reduction slightly declines, but still has good noise reduction compared with Y shape assembly.
At 2m height, insertion loss increases with distance and slightly reduces, consistent in the performance of same height with the independent sound barrier of Y shape assembly that adopts, and from adopt the sound barrier of multiple wedge structure different separately, adopting separately the sound barrier of multiple wedge structure to increase with distance in 2m height noise reduction slightly increases.And at other height, insertion loss increases the trend having increase with distance, similar to the insertion loss area distribution of other two kinds of structures.
Visible, adopt the sound barrier of multiple wedge structure and Y shape assembly to be improved significantly in noise reduction that is highly moderate and upper zone simultaneously, the insertion loss of 30m distance height 2m is 16.8dB, the ratio separately multiple wedge shape of application and Y shape assembly exceeds 2.4dB and 4.6dB respectively, and the noise reduction of height more than 5m is than lower slightly during the multiple wedge structure of independent application.Reason is that Y shape branch type top structure has larger bridging effect to lower region.
Shield honorable layer and bottom surface layer designs: adopt the novel sound absorption materials such as Open-cell Aluminum Foam as the main sound absorption material on planting box 300.
Plantation storehouse design: to be that described sound barrier body 100 is stacking from bottom to up arrange multiple planting box 300 for planting plants in plantation storehouse, the warehouse surface layer of planting box 300 can arrange sound absorbing plate structure, constitute the noise reduction unit of ordered arrangement, form " sound absorber " array be evenly distributed on described sound barrier body 100, serike in planting box 300, one is sound absorption, and cavity adds filling or cavity inherently has good acoustically effective; In addition, planting density is larger, and acoustically effective is better, and the effect of the sound-soft boundary that barrier is formed is more obvious, and noise reduction is better; Two is depositing dust, and plant leaf surface has obvious adsorption and sedimentation effect to traffic dust, and can filter vehicle exhaust, purifies air; Three is attractive in appearance, and plant is remarkable to road environment landscaping effect, alleviates driver and travels fatigue.
Further, as shown in Figure 6, described planting box 300 comprises water storehouse 310, and is symmetricly set on the plantation storehouse 320 of the relative both sides of described water storehouse; Base in described water storehouse 310 is provided with the bleed off pipe 311 being highly less than water storehouse height, described water storehouse 310 is just provided with water storehouse weep hole 312 on the sidewall in described plantation storehouse 320, and the distance between bottom described water storehouse weep hole 312 and water storehouse 310 is less than the height of described bleed off pipe 311; Described plantation storehouse 320 comprise set gradually from bottom to up remaining water accumulation layer 321, lightweight medium storehouse 322 and solid native planting medium storehouse 323; Described plantation storehouse 320 is also provided with the sound absorbing plate 330 for absorbing sound; The bottom of the remaining water accumulation layer 321 of described planting box 300 is provided with the outfall 340 of excess water in a discharge plantation storehouse 320.During concrete enforcement, be provided with water-absorbing sponge in described remaining water accumulation layer 321, described remaining water accumulation layer 321 is provided with matrix filter screen with the interface place in lightweight medium storehouse 322.
Further, as shown in Figure 4, described Y shape assembly 200 comprises a vertical portion 201 and is symmetricly set on two rakes 202 on top, described vertical portion 201; The angle of described rake 202 and described vertical portion 201 is adjustable and change.The inwall of described rake 202 is provided with single-crystalline-silicon solar-cell panel 210, described sound barrier body 100 is provided with the LED light device (not marking in figure) be electrically connected with described single-crystalline-silicon solar-cell panel 210, described LED light device is electrically connected with described single-crystalline-silicon solar-cell panel 210.During concrete enforcement, employing monolithic or polylith peak power are the single-crystalline-silicon solar-cell panel 210 of 30wp, and the working time is local code road lighting duration every night to arrange single-crystalline-silicon solar-cell panel 210, minimum design duration is not less than 8 hours, meets 40 hours and continue illumination under extreme condition.Select the LED of low-power specular removal according to particular lamp apart from arranging.Working method is for generating power for their own use.The advantage of this mode is that photoelectric transformation efficiency is higher, and equal-wattage small volume, thus windward side is less, to safety advantageously.
Further, as shown in Figure 4, the bottom of described rake 202 is provided with the dmp filter groove 220 for filtering rainwater.Rainwater flows into dmp filter groove 220 enter in water storehouse 310 via having rainwater-collecting effect single-crystalline-silicon solar-cell panel 210.Early-stage rainwater is dirtier, is entered the filtration layer by layer of plantation storehouse plant and planting medium by water circulation, forms clean water and progressively oozes down, finally enters bottom aqua storage tank.
Further, as shown in Figure 4, the outer wall of described rake 202 is also provided with the first Active Absorption device group 230 for absorption of noise.When multiple planting box 300 is stacking from bottom to up, the cavity that the water storehouse 310 being in same column is formed is that cavity adds filling or cavity, and itself just has good acoustically effective; In addition, in planting box 300, planting density is larger, and acoustically effective is better, and the effect of the sound-soft boundary that barrier is formed is more obvious, and noise reduction is better; Described planting box 300 adopts sound absorbing plate, if the sound absorption materials such as acrylic board, PC Felt, polyethylene copolymer plate are as the making material of the integrated component of module, inherently has good sound absorption and insulation effect.Inner planting matrix selects the lightweight planting medium such as peat soil, coconut palm chaff, perlite, haydite, and the advantages such as have light weight, easily take root, heatstroke prevention is freeze proof, and drainage performance is good have sound absorption simultaneously.Described Y shape assembly is also provided with the Active Absorption device 230 for absorption of noise, more enhances the acoustically effective of described Y shape assembly.
Further, as shown in Figure 3, one is provided with in described aqua storage tank 400 for water to be evacuated to the tubing pump 600 of the planting box 300 on sound barrier body 100 top by feed pipe 500 from aqua storage tank 400; The water side place of described feed pipe 500 is provided with the flow control valve 700 for controlling uninterrupted when water flows out.Aqua storage tank 400 is set bottom sound barrier body 100, squeezes into feed pipe 500 by the planting box 300 arriving sound barrier body 100 top by tubing pump 600, control the water yield by flow control valve 700, in instillation planting box 300.Water enters instillation planting box 300 rear portion water and is absorbed by root system of plant, the unnecessary solid native planting medium storehouse 323 of water process, lightweight medium storehouse 322 finally reach the water-absorbing sponge in remaining water accumulation layer 321, sponge is remaining after inhaling full water is discharged by outfall 340, enters lower one deck planting box 300.Water enter the planting box 300 of first floor (from high toward low sequence, top be first floor) full after, downward one deck planting box 300 flowing water, until bottom one deck, aqua storage tank 400 bottom unnecessary water will flow into, achieves recycling of water.By gutter 410, unnecessary water is discharged after aqua storage tank 400 is full.Wherein, the water in aqua storage tank 400 also by humidity sensor actuated signal control tubing pump 600 switch, makes water flow into feed pipe 500 as required, accomplishes accurate pouring.Wherein, described tubing pump 600 is arranged on aqua storage tank 400 inwall by airtight box, and easy access is changed; Power by road power supply 220V, also collect electric energy by solar panels and power.
Further, as shown in Figure 1, described aqua storage tank 400 is also provided with gutter 410.After filling water in aqua storage tank 400, by gutter 410, unnecessary water is discharged.
Further, described sound barrier body 100 is also provided with the second Active Absorption device group for absorption of noise.During concrete enforcement, described second Active Absorption device group is arranged on apart from sound barrier unit bottom 1-1.3m place.
Further, described sound barrier unit also comprises the control module starting or stoping and control the described rake of Y shape assembly and the angle of described vertical portion for controlling the first Active Absorption device group and the second Active Absorption device group according to the sound decibel number value of current detection.When excessive rainfall in Y shape assembly being detected, then the angle of the described rake and described vertical portion that can increase Y shape assembly makes unnecessary rainwater pour out.Meanwhile, when detecting that the sound decibel number value through sound barrier unit is greater than 48 decibels, then opening described first Active Absorption device group and the second Active Absorption device group by control module, initiatively abating the noise, guaranteeing noise reduction.Meanwhile, described control its also can be used for the unlatching or the closedown that control dmp filter groove 220, namely when amount of rainfall reaches the weight of specifying in the dmp filter groove 220 in Y shape assembly, then open dmp filter groove 220 outlet at bottom, rainwater entered in water storehouse 310.The automatic control to the first Active Absorption device group, the second Active Absorption device group, Y shape assembly and dmp filter groove is achieved by controller.
Illustrate ecological type sound screen device of the present invention with the flow direction of water below, rainwater flows into dmp filter groove 220 via the single-crystalline-silicon solar-cell panel 210 with rainwater-collecting effect and enters in the planting box 300 of integration.Early-stage rainwater is dirtier, is entered the filtration layer by layer of plantation storehouse plant and planting medium by water circulation, forms clean water and progressively oozes down, finally enters bottom aqua storage tank.
In order to verify the feasibility of ecological type sound screen device of the present invention, verify below by emulation experiment.Sound barrier design parameters is in the design process as follows.
1) Sound Barrier Design desired value is determined;
2) position of selected sound barrier, determines the physical dimension of sound barrier afterwards;
3) sound barrier diffraction acoustic attenuation △ Ld is calculated;
4) determine sound barrier sound insulating structure, determine sound absorption construction;
5) geometry of foundation insertion loss and field condition determination sound barrier;
6) sound barrier insertion loss is determined;
7) reached the desired value of sound barrier insertion loss by adjustment, this process need be carried out repeatedly usually, finally determines rational sound barrier height, length, position etc., to reach design object value.
The determination of Sound Barrier Design desired value with by sound point place road traffic noise value (survey or predict), by the noise floor value of sound point and the size of Standard of Environmental Noise value relevant.If when the noise floor value by sound point is equal to or less than the Standard of Environmental Noise value of functional areas, then design object value can be deducted Standard of Environmental Noise value to determine by road traffic noise value.
The general noise reduction scope of consideration sound barrier is 5 ~ 24dB, and the noise reduction desired value of setting sound barrier is 24dB.
The principle selected or sound barrier, near sound source, or near by sound point, or available obstruction etc., make every effort to reach acoustic attenuation needed for design object with less engineering quantity.Because sound barrier is arranged on road both sides usually, and the underground in these regions is embedded with a large amount of pipeline usually, therefore should do detailed prospecting, avoids damaging.
The physical dimension of sound barrier unit mainly comprises height and the length of sound barrier.
The height of sound barrier unit and length are generally according to design object value, determine length and the height of several groups of sound barriers, form multiple assembled scheme, calculate the insertion loss of each scheme and retain the scheme reaching design object value, and carry out than choosing, choose the best alternatives, if do not reach design object value, also will recalculate height etc.But above step can only calculate comparatively simple geometry.To comparatively complicated sound barrier geometry, carried out the checking computations of height by computer simulation, determine to reach design object value, the noise profile in whole region is predicted simultaneously.
According to the Computer simulation results of aforementioned sound barrier, sound barrier unit, at height 3.5m, when having top structure, reaches the requirement that can meet completely sound barrier target noise reduction value 12dB at the insertion loss of distance sound barrier 30m.
The length of sound barrier unit depends on the Distance geometry length by territory, sound area, and the impossible endless of sound barrier unit, general design length should have a rationally economic value.According to the method for specification, barrier is △ Ld by the noise attentuation value of endless theory calculate to have limit for length's sound barrier to suppose, then have the correction value △ Ld of limit for length's sound barrier to depend on shield angle β/θ.
Empirically; assuming that a sensitivity building within the scope of the 50m of roadside needs sound barrier to protect; then respectively stretch out the sound barrier of 60m on these sensitivity building both sides, because sound barrier both sides side direction diffraction is substantially negligible to the reduction of this Sensitive Buildings noise reduction.
Solar photovoltaic technology is applied to road noise barrier, on the basis not affecting original road noise barrier safety, sound-proof sound-absorbing performance, it can be used as the carrier of solar energy photovoltaic generator, accomplish dual-use material.
The calculating formula of sound barrier unit insertion loss is such as formula shown in (1).Suppose that sound barrier unit overall height is all 3.5m, vehicle noise is assumed to be two line source, and the distance of two line source is 13m, and line source height is overhead 1.2m, sound barrier unit from close to line source distance be 6.5m, distance curb 1m.For the noise pollution of common roadway noise to road both sides, suppose that the acceptance point sound pressure level at height 1.5m place is 70dB without distance sound barrier 30m place during sound barrier.
1) calculating of diffraction acoustic attenuation
According to design specifications, when sound source is the irrelevant sound source of endless, its diffracted sound field is:
In formula (2),
F-frequency of sound wave, Hz
δ=A+B-d is path difference, m
C-velocity of sound, m/s
According to the parameter that " Shenzhen area view Sound Barrier Design guide (trying) " and " Sound Barrier Design and specifications of surveys HJ/T90-2004 " provide, sound barrier A weighted diffraction acoustic attenuation △ Ld calculates can adopt equivalent frequency fe=500Hz.Sound barrier path difference calculates schematic diagram as Figure 10.
According to " Shenzhen area view Sound Barrier Design guide (trying) " and " Sound Barrier Design and specifications of surveys HJ/T90-2004 ", the height of sound barrier should be calculated with the effective height of sound barrier.Suppose that sound barrier unit overall height is 3.5m, the height equivlent of sound barrier unit calculates and calculates according to Figure 11.
The diffraction acoustic attenuation of sound barrier can calculate according to formula above, but comparatively loaded down with trivial details.Also can try to achieve according to Figure 12, be suppose that sound barrier is endless by the numerical value of trying to achieve in Figure 12.
Sound barrier unit position road and sensitive point for noise do not have obstruction, and therefore obstruction correction and ground absorption sound adopt ground absorption sound.Ground absorption acoustic attenuation can be asked for by Figure 13.
Equivalence lane is calculated as follows:
DN---by sound point to nearest track distance between center line, m
DF---by sound point to track distance between center line farthest, m
Suppose that the sound insulation factor of noise barrier can reach noise reduction and add 10dB, i.e. 22dB, then transmission sound correction value Δ Lt is negligible; Owing to being one-sided sound barrier, so reflected sound correction value Δ Lr is 0.
Carried out being highly the calculating of 2m different distance insertion loss according to " sound barrier acoustics design and specifications of surveys HJ/T90-2004 ", the contrast of result of calculation and Computer simulation results is in table 7.
Table 7
Utilize acoustic software RAYNOISE to carry out analog computation display, multiple wedge structure has good noise reduction relative to general upright ideophone barrier.
1) whole structure analysis
The sound barrier of the multiple wedge structure of computer simulation this programme and the combination of Y shape branch type top structure, result shows, the sound barrier of two kinds of textural associations is improved significantly in noise reduction that is highly moderate and upper zone, wherein the insertion loss of 30m distance height 2m is 16.8dB, than the multiple wedge shape of application and Y shape branch type structure exceed 2.4dB and 4.6dB respectively separately, exceed 6.6dB than general erect type sound barrier, noise reduction improves 9.44%.
2) top is analyzed
The Y shape branch type top structure of computer simulation this programme, result shows this top structure and still has good noise reduction in high height.Wherein, 50m distance after barrier, the insertion loss of height 20m still can reach 3.4dB, than T-shaped circular arc top structure height 1.4dB, exceeds 3.2dB than upright shape, and noise reduction improves 4.76%, is suitable for highly higher sensitive point for noise.Add the display of the analog computation result after practical sound absorption material to Y shape branch type top structure, the layout of sound absorption material obviously can not improve the noise reduction after sound barrier.
3) body analysis is shielded
The multiple wedge structure of computer simulation this programme, result shows this structure and has good noise reduction relative to general erect type sound barrier.Wherein, on the horizon of distance ground 2m, the outer 30m distance of sound barrier can obtain the insertion loss of 14.5dB, and have the additional insertion loss of 4.3dB compared with same position upright ideophone barrier, noise reduction improves 6.15%.The wedge shape of the multiple wedge structure the latter half of sound barrier does not almost affect noise reduction, to simplification structure, has reduced costs reference significance.
As can be seen from table 7 data relatively, the error calculated scope of analog result and employing national standard is 1.9dB to the maximum, take computer data as benchmark relative deviation be 17.6%, due to the complexity of acoustic theory computational process, this simulation test and calculated value belong to and comparatively to coincide.In addition, from variation tendency, the insertion loss of two kinds of method calculating is consistent with each other with distance variation tendency, i.e. the feasibility of provable ecological type sound screen apparatus design of the present invention.
Visible, compared with prior art, patent tool of the present invention has the following advantages:
1) sound absorption reduction: the present invention breaches traditional sound barrier form, by sound barrier main body, noise reduction plant and bottom sound absorbing member, forms triple sound-absorbing effect, than traditional sound barrier single sound absorption or sound insulation action effect more obvious.
Planting medium is had in plantation storehouse in each module for planting plant of this plant compound sound barrier, itself there is good sound insulation effect, each plantation storehouse is staggered, form wedge structure, warehouse adopts sound absorbing plate structure, constitute staggered noise reduction unit, form " sound absorber " array be evenly distributed in sound barrier main body, good acoustically effective can be reached.Plant storehouse is 45 ° of-50 ° of angles by acoustic interface and ground simultaneously, and the inclined-plane of formation can effective reflecting background.
The plant of this plant compound sound barrier plantation forms " soft border " acoustically by the refraction at the positions such as plant leaf blade, root, stem, reflection, absorption, good assimilation effect is had to low frequency noise, can effectively adsorb the dust kicked up in motor-driven vehicle going simultaneously, reduce air pollution.
The water storage cavity be made up of damping material in the middle part of this plant compound sound barrier, more effective absorption can reduce noise.
The solar panels at this plant compound sound barrier top effectively can increase the effective height of sound barrier while reflective sound wave.
This plant compound sound barrier can combinationally use with the vertical type sound barrier of existing general unlike material.
2) environmental benefit: the plant of this sound barrier plantation at the solid carbon that lays the dust, can reduce environment pollution, regulates the aspects such as microclimate to there is plurality of advantages;
Sound barrier top design has solar energy photovoltaic generator, and can meet electric energy needed for road brightening, needed for plant, moisture is mainly derived from natural rain, and have rainwater in sound barrier main body and preserve and water distribution system, environmental protection and energy saving is strong.
Can beautify the environment, effectively alleviate Driver Vision tired.In the section that the knick point, turning etc. of road, bridge need driver to note, the diagram pointed out by plant arrangement color change or traffic mark, has certain warning function.
Meanwhile, ecological type sound screen device of the present invention has the function of vertical greening device, can be used as the greening separate facilities of town road.
Ecological type sound screen device of the present invention can be installed in road hard isolation strip or stake, and also can be used in motor vehicle and nonmotorized vehicle lane has the stream of people to intercept to guide and afforest the region required, being particularly suitable for the place of steric requirements deficiency.
And, planting plants in the planting box in ecological type sound screen device of the present invention after increasing automatic humidifying device, described ecological type sound screen can be used as automatic humidifying formula greening system.This automatic humidifying formula greening system has the following advantages: a) without the need to electric power: safe and reliable; B) automatic irrigation: automatic humidifying, without the need to manual watering, saves artificial, saves maintenance cost; C) water-saving rate is high: root supplies water, and anhydrous source and course loses, and water-saving rate is more than 85%; D) energy-conserving and environment-protective: utilize rainwater, specific retention is high, and unnecessary rainwater is discharged after filtering, and not easily blocks drainage system; E) matrix is ultra-thin: wide accommodation; F) preserve moisture and fertility: can supply water at root and apply fertilizer, fertilizer nutrient runs off few; G) survival rate is high: planting box is ventilative, is beneficial to plant growth, not easily rotten; H) quick for installation: simple installation, be applicable to large area and use, box greening can arbitrarily be combined, and the duration is short, instant effect; I) dense planting is suitable for: all kinds of plant can be planted.
3) self-organizing irrigation system: irrigating plant preferentially adopts rainwater-collecting, forms water circulation in module for planting plant inside; When considering rainwater undersupply, by water supply network simultaneously, self-organizing is irrigated.Also be one of technical measures of the sponge city innovation that country advocates, compensate for the shortcoming that current sponge city mostly is terrestrial reference and underground construction technical measures, the present invention is the sponge city technical measures of solid space on the ground, comprises rainwater-collecting, Treated sewage reusing, the function of vertical greening.
4) facilitate maintenance management: adopt the plant with the mutual restrictive function of disease and pest to be mixed with plantation, to reach the object that nature reduces plant sound barrier disease and pest, do not need extra deinsectization, spraying medicine etc., reduce nourishment's workload.This plantation chamber implants planting medium is all positioned in papery planting box, and it is very convenient to change.
In sum, the invention provides a kind of ecological type sound screen device and the greening spacer assembly for town road, comprise multiple sound barrier unit, described sound barrier unit comprises the sound barrier body of an Absorbable rod noise; Described sound barrier body is stacking from bottom to up arranges multiple planting box for planting plants, also comprises the Y shape assembly being arranged on described sound barrier body top; The bottom of described sound barrier body is also provided with the aqua storage tank for storing the moisture from the infiltration of sound barrier body.The new technologies such as the integrated novel sound absorption material of the present invention, sqound absorption construction, Novel modeling, planting, rainwater-collecting and scientific application of irrigation system, solar energy power generating, LED illumination, in one, achieve the excellent effect of stress release treatment process.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. an ecological type sound screen device, is characterized in that, comprises multiple sound barrier unit, and described sound barrier unit comprises the sound barrier body of an Absorbable rod noise; Described sound barrier body is stacking from bottom to up arranges multiple planting box for planting plants, also comprises the Y shape assembly being arranged on described sound barrier body top; The bottom of described sound barrier body is also provided with for storing the aqua storage tank of lower moisture from the infiltration of sound barrier body.
2. ecological type sound screen device according to claim 1, it is characterized in that, described planting box comprises water storehouse, and is symmetricly set on the plantation storehouse of the relative both sides of described water storehouse; Base in described water storehouse is provided with the bleed off pipe being highly less than water storehouse height, described water storehouse is just provided with water storehouse weep hole on the sidewall in described plantation storehouse, and the distance between bottom described water storehouse weep hole and water storehouse equals the height of described bleed off pipe; Described plantation storehouse comprise set gradually from bottom to up remaining water accumulation layer, lightweight medium storehouse and solid Tu Zhongzhijiezhicang; Described plantation storehouse is also provided with the sound absorbing plate for absorbing sound.
3. ecological type sound screen device according to claim 1, is characterized in that, described Y shape assembly comprises a vertical portion and is symmetricly set on two rakes on top, described vertical portion; The angle of described rake and described vertical portion is adjustable and change.
4. ecological type sound screen device according to claim 3, is characterized in that, the inwall of described rake is provided with single-crystalline-silicon solar-cell panel; The bottom of described rake is provided with the dmp filter groove for filtering rainwater; Described sound barrier body is provided with the LED light device for throwing light on, described LED light device is electrically connected with described single-crystalline-silicon solar-cell panel.
5. ecological type sound screen device according to claim 4, is characterized in that, the outer wall of described rake is also provided with the first Active Absorption device group for absorption of noise; Described sound barrier body is also provided with the second Active Absorption device group for absorption of noise.
6. ecological type sound screen device according to claim 1, is characterized in that, be provided with one for water to be evacuated to the tubing pump of the planting box on sound barrier body top by feed pipe from aqua storage tank in described aqua storage tank; The water side place of described feed pipe is provided with the flow control valve for controlling uninterrupted when water flows out.
7. ecological type sound screen device according to claim 1, is characterized in that, described aqua storage tank is also provided with gutter.
8. ecological type sound screen device according to claim 2, is characterized in that, the bottom of the remaining water accumulation layer of described planting box is provided with the outfall of discharging excess water in plantation storehouse.
9. ecological type sound screen device according to claim 5, is characterized in that, also comprise:
The control module of the described rake of Y shape assembly and the angle of described vertical portion is started or stoped and controls for controlling the first Active Absorption device group and the second Active Absorption device group according to the sound decibel number value of current detection.
10. for a greening spacer assembly for town road, it is characterized in that, comprise the ecological type sound screen device as described in any one of claim 1-9.
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