CN109065012A - Netted acoustic screen for underwater pile driving - Google Patents

Netted acoustic screen for underwater pile driving Download PDF

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Publication number
CN109065012A
CN109065012A CN201810934221.4A CN201810934221A CN109065012A CN 109065012 A CN109065012 A CN 109065012A CN 201810934221 A CN201810934221 A CN 201810934221A CN 109065012 A CN109065012 A CN 109065012A
Authority
CN
China
Prior art keywords
reticular structure
netted
sound insulation
pile driving
underwater pile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810934221.4A
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Chinese (zh)
Inventor
庞业珍
白振国
余晓丽
刘进
张占阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
702th Research Institute of CSIC
Original Assignee
702th Research Institute of CSIC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 702th Research Institute of CSIC filed Critical 702th Research Institute of CSIC
Priority to CN201810934221.4A priority Critical patent/CN109065012A/en
Publication of CN109065012A publication Critical patent/CN109065012A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162Selection of materials

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Revetment (AREA)

Abstract

The present invention relates to the netted acoustic screens for underwater pile driving, reticular structure including being looped around piling pipeline periphery, the surface of the reticular structure is in array distribution mesh, the top of the reticular structure is connect with floating support mechanism, in the jack for being uniformly used for folding and unfolding reticular structure in the floating support mechanism, sound insulation unit is arranged at each node of the reticular structure.It is the configuration of the present invention is simple, low in cost, it is easy to lay and has good middle sound insulation room effect, can isolate radiated noise using the hollow elasticity sphere of inner inflatable, to effectively reduce ambient sea noise caused by piling construction.

Description

Netted acoustic screen for underwater pile driving
Technical field
The present invention relates to underwater noise control fields, the more particularly, to netted acoustic screen of underwater pile driving.
Background technique
With the ocean engineerings such as wind-power electricity generation and offshore oil production construction more and more frequently, marine acoustics environment is by ocean Piling construction in the influence of engineering construction, especially ocean engineering construction, noise peak is up to 240dB, and wherein low frequency divides Amount can propagate quite remote distance in ocean, and the influence to marine organisms is huge, and range is wide, and it is right in the construction process to be badly in need of Pile Driving Noise is controlled.
Summary of the invention
The applicant be directed to above-mentioned existing issue, carried out Improvement, provide it is a kind of for underwater pile driving it is netted every Sound-screen, can be effectively right in hydrostatic pressing not higher than ambient sea noise caused by reduction piling radiated noise under 1MPa environment Pile Driving Noise is controlled.
The technical solution adopted in the present invention is as follows:
For the netted acoustic screen of underwater pile driving, the reticular structure including being looped around piling pipeline periphery, the netted knot The surface of structure is in array distribution mesh, and the top of the reticular structure is connect with floating support mechanism, in the floating support machine The jack of folding and unfolding reticular structure is uniformly used on structure, arrangement sound insulation to be single at each node of the reticular structure Member.
Its further technical solution is:
The reticular structure transversely forms cylindricality net with longitudinal intertexture by many netting twines, in the bottom of the reticular structure Arrange multiple gravity objects, the sum of total force of each gravity object is greater than the sum of the buoyancy of the sound insulation unit.
The floating support mechanism is floating drum;
The sound insulation unit is the hollow elasticity sphere of interior cloth inflation, and the air pressure of the hollow elasticity sphere is greater than depth of water water Pressure;
The volume of each mesh is no more than the spacing between adjacent sound insulation unit.
Beneficial effects of the present invention are as follows:
It is the configuration of the present invention is simple, low in cost, it is easy to lay and has good middle sound insulation room effect, utilizes inside The hollow elasticity sphere of inflation can isolate radiated noise, to effectively reduce ambient sea noise caused by piling construction.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein: 1, pipeline of driving piles;2, jack;3, floating support mechanism;4, insulate against sound unit;5, reticular structure;6, again Power object.
Specific embodiment
Illustrate a specific embodiment of the invention below.
As shown in Figure 1, the netted acoustic screen for underwater pile driving includes the reticular structure 5 for being looped around piling 1 periphery of pipeline, The surface of reticular structure 5 is in array distribution mesh, and the top of reticular structure 5 is connect with floating support mechanism 3, in floating support machine It is uniformly used for the jack 2 of folding and unfolding reticular structure 5 on structure 3, sound insulation unit is arranged at each node of reticular structure 5 4.As shown in Figure 1, reticular structure 5 transversely forms cylindricality net with longitudinal intertexture by many netting twines, in the bottom cloth of reticular structure 5 Multiple gravity objects 6 are set, the sum of total force of each gravity object 6 is greater than the sum of the buoyancy of sound insulation unit 4.Above-mentioned floating support mechanism 3 For floating drum.Above-mentioned sound insulation unit 4 is the hollow elasticity sphere of interior cloth inflation, and the air pressure of hollow elasticity sphere is greater than depth of water hydraulic pressure. The volume of above-mentioned each mesh is no more than the spacing between adjacent sound insulation unit 4, convenient for the installation for the unit 4 that insulates against sound.The work of gravity object 6 Be by cylindricality drawing off the net, make cylindricality net keep hang, will not float because of the effect of floating support mechanism 3.
Specific implementation process of the invention is as follows:
The present invention is lifted to and is surrounded on the periphery of piling pipeline 1, so that the present invention is swum in water by floating support mechanism 3 On face, according to the practical depth of water, reticular structure 5 is released using jack 2, the release length of reticular structure 5 is bigger in the present invention In the depth of water, cylindricality reticular structure is formed it into.
Due to the air spherical cavity that the inside of middle control elastic sphere is inflation, the acoustic impedance of air spherical cavity is much smaller than the acoustic resistance of water Anti-, sound wave is got in air spherical cavity, and due to impedance severe mismatch, sound wave cannot be penetrated and is reflected back, therefore air spherical cavity Play the role of good sound insulation for sound insulation room, air spherical cavity does not need continuously, it is only necessary in 1 times of wavelength ruler of sound wave Sound insulation can be haved the function that by being evenly arranged multiple spheres in degree range.
It is the configuration of the present invention is simple, low in cost, it is easy to lay and has good middle sound insulation room effect, utilizes inside The hollow elasticity sphere of inflation can isolate radiated noise, to effectively reduce ambient sea noise caused by piling construction.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right It is required that the present invention can make any type of modification without prejudice to basic structure of the invention.
Why hollow elasticity sphere can isolate radiated noise, if principle can be explained one time.
Hollow elasticity sphere is wrapped in an air spherical cavity, and the acoustic impedance of air spherical cavity is much smaller than the acoustic impedance of water, sound wave Get in air spherical cavity, due to impedance severe mismatch, sound wave cannot be penetrated and is reflected back, therefore air spherical cavity play it is good Good sound insulation acts on for sound insulation room, and air spherical cavity does not need continuously, it is only necessary within the scope of 1 times of wavelength dimension of sound wave Sound insulation can be haved the function that by being evenly arranged multiple spheres.
What the effect of spherical weight arrangement?
Spherical weight will insulate against sound drawing off the net, and sound insulation net is made to keep hang, will not act on and float because of air spherical cavity
Effect of the mesh size no more than sound insulation cell spacing?
Sound insulation unit is hung on mesh node, therefore mesh node spacing is less than sound insulation cell spacing.

Claims (5)

1. being used for the netted acoustic screen of underwater pile driving, it is characterised in that: the reticular structure including being looped around piling pipeline (1) periphery (5), the surface of the reticular structure (5) is in array distribution mesh, the top of the reticular structure (5) and floating support mechanism (3) it connects, in the jack (2) for being uniformly used for folding and unfolding reticular structure (5) on the floating support mechanism (3), in the net Arrangement sound insulation unit (4) at each node of shape structure (5).
2. as described in claim 1 be used for underwater pile driving netted acoustic screen, it is characterised in that: the reticular structure (5) by Many netting twines transversely form cylindricality net with longitudinal intertexture, arrange multiple gravity objects (6) in the bottom of the reticular structure (5), The sum of total force of each gravity object (6) is greater than the sum of the buoyancy of sound insulation unit (4).
3. being used for the netted acoustic screen of underwater pile driving as described in claim 1, it is characterised in that: the floating support mechanism It (3) is floating drum.
4. being used for the netted acoustic screen of underwater pile driving as described in claim 1, it is characterised in that: the sound insulation unit (4) is The hollow elasticity sphere of interior cloth inflation, the air pressure of the hollow elasticity sphere are greater than depth of water hydraulic pressure.
5. being used for the netted acoustic screen of underwater pile driving as described in claim 1, it is characterised in that: the volume of each mesh is not more than Spacing between adjacent sound insulation unit (4).
CN201810934221.4A 2018-08-16 2018-08-16 Netted acoustic screen for underwater pile driving Pending CN109065012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810934221.4A CN109065012A (en) 2018-08-16 2018-08-16 Netted acoustic screen for underwater pile driving

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810934221.4A CN109065012A (en) 2018-08-16 2018-08-16 Netted acoustic screen for underwater pile driving

Publications (1)

Publication Number Publication Date
CN109065012A true CN109065012A (en) 2018-12-21

Family

ID=64687085

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810934221.4A Pending CN109065012A (en) 2018-08-16 2018-08-16 Netted acoustic screen for underwater pile driving

Country Status (1)

Country Link
CN (1) CN109065012A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110512604A (en) * 2019-08-21 2019-11-29 武汉理工大学 Conical Shells With air curtain underwater pile driving denoising device is truncated in array
CN110512605A (en) * 2019-08-21 2019-11-29 武汉理工大学 Polygonal bilayer frame air bag underwater pile driving noise-reducing and dustproof device
CN110670591A (en) * 2019-09-26 2020-01-10 河海大学 Novel pile noise reduction device
CN110952547A (en) * 2019-11-25 2020-04-03 河海大学 Suction bucket type underwater piling noise reduction device and construction method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103774670A (en) * 2014-01-27 2014-05-07 广东明阳风电产业集团有限公司 Vacuum metal ball noise reduction device for constructing offshore draught fan foundation
CN103774669A (en) * 2014-01-27 2014-05-07 广东明阳风电产业集团有限公司 Vacuum metal ball noise reduction net for constructing offshore draught fan foundation
EP3092636A1 (en) * 2014-01-06 2016-11-16 Mark S. Wochner Underwater noise abatement apparatus and deployment system
TWM552935U (en) * 2016-11-23 2017-12-11 陳琪芳 Underwater noise mitigation module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3092636A1 (en) * 2014-01-06 2016-11-16 Mark S. Wochner Underwater noise abatement apparatus and deployment system
CN103774670A (en) * 2014-01-27 2014-05-07 广东明阳风电产业集团有限公司 Vacuum metal ball noise reduction device for constructing offshore draught fan foundation
CN103774669A (en) * 2014-01-27 2014-05-07 广东明阳风电产业集团有限公司 Vacuum metal ball noise reduction net for constructing offshore draught fan foundation
TWM552935U (en) * 2016-11-23 2017-12-11 陳琪芳 Underwater noise mitigation module

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110512604A (en) * 2019-08-21 2019-11-29 武汉理工大学 Conical Shells With air curtain underwater pile driving denoising device is truncated in array
CN110512605A (en) * 2019-08-21 2019-11-29 武汉理工大学 Polygonal bilayer frame air bag underwater pile driving noise-reducing and dustproof device
CN110670591A (en) * 2019-09-26 2020-01-10 河海大学 Novel pile noise reduction device
CN110952547A (en) * 2019-11-25 2020-04-03 河海大学 Suction bucket type underwater piling noise reduction device and construction method thereof

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Application publication date: 20181221