CN113502762A - Integral groove-based directly-buried self-standing non-metallic sound barrier and installation method thereof - Google Patents
Integral groove-based directly-buried self-standing non-metallic sound barrier and installation method thereof Download PDFInfo
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0023—Details, e.g. foundations
Abstract
The invention discloses an integral groove-based direct-buried self-supporting non-metallic sound barrier and an installation method thereof, and belongs to the technical field of sound barriers. The detachable connecting piece can be adopted for vertically and horizontally fixedly connecting the sound barrier, so that the sound barrier is easy to detach and recycle; meanwhile, when the sound barrier is under the wind pressure of +/-4 kpa, the maximum elastic disturbance is less than or equal to L/350, the impact resistance is more than or equal to 35J, the mechanical requirement of the high-speed railway sound barrier is met, the acoustic performance sound insulation is more than or equal to 50dB, and the sound absorption coefficient NRC is more than or equal to 0.7.
Description
Technical Field
The invention relates to the technical field of sound barriers, in particular to an integral groove-based directly-buried self-standing non-metallic sound barrier and an installation method thereof.
Background
With the development of urban construction, the problem of traffic noise is more and more concerned by people. Traffic noise sound source is mobile, has high sound pole and long interference time, has wide influence range, and has seriously disturbed the normal life and rest of urban and rural residents. In order to solve the noise problem, three modes of road surface noise reduction, noise barrier noise reduction and noise insulation window noise reduction exist at present.
At present, nonmetal sound absorption and insulation boards are widely used on two sides of a railway and a road, the demand is increasing day by day, the steel upright posts are arranged on two sides of the road in a conventional way, and the sound barrier boards are installed in an insertion mode.
Disclosure of Invention
In view of the above disadvantages, the present invention provides an integral channel foundation direct-buried self-standing non-metallic sound barrier and an installation method thereof, which can effectively solve the problems of heavy self-weight and poor durability existing in the existing non-metallic sound barrier, and reduce the installation difficulty of the sound barrier and the cost of the support system.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an integral groove-based direct-buried self-standing non-metallic sound barrier which comprises a sound barrier main body, wherein the sound barrier main body is in a direct-buried self-standing structure and comprises a panel with holes on the surface, a back plate without holes on the surface and four partition rib plates, the panel, the back plate and the four partition rib plates form a middle cavity, and a sound absorption material is filled in the middle cavity.
Furthermore, the face plate and the back plate are both made of reinforced ultrahigh-performance cement-based fiber toughening materials; wherein, the reinforcing bar type is twisted steel, prestressing wire or prestressing steel strand wires, and reinforcing bar net mesh size selects one of following three kinds of specifications according to actual conditions: 100mm × 100mm, 100mm × 200mm, 200mm × 200 mm; the diameters of the steel bars, the steel wires and the steel strands are all 5-16 mm.
Furthermore, the reinforcing mesh is arranged in a pre-embedded mode, a pre-tensioning mode or a post-tensioning mode; preferably, the pre-embedded reinforcing mesh is in a bolt welding mode or a steel wire binding mode.
Further, the ultrahigh-performance cement-based fiber toughening material comprises the following components in parts by mass: 650 parts of cement, 500 parts of limestone powder, 650 parts of early strength component, 30-60 parts of fiber, 4-12 parts of water reducing agent, 1-3 parts of defoaming agent, 300 parts of water and 350 parts of fine aggregate and 700 parts of fine aggregate.
Further, the ultrahigh-performance cement-based fiber toughening material comprises the following components in parts by mass: 600 parts of cement, 550 parts of limestone powder, 45 parts of early strength component, 25 parts of fiber, 8 parts of water reducing agent, 2 parts of defoaming agent, 320 parts of water and 500 parts of fine aggregate.
Further, the cement is ordinary portland cement, slag portland cement, pozzolanic portland cement, fly ash portland cement or composite portland cement.
Furthermore, the particle size of the limestone powder is 1-200 μm.
Further, the early strength component is at least one of sulphoaluminate cement, aluminate cement, nitrite and anhydrous sodium sulfate.
Further, the early strength component is composed of sulphoaluminate cement and anhydrous sodium sulfate in a mass ratio of 30-60: 1-2.
Further, the fiber is at least one of polypropylene fiber, polypropylene alcohol fiber, polyether fiber, aromatic polyamide fiber, polyvinyl alcohol fiber, polyacrylonitrile fiber and polyethylene fiber; the length of the material is 8-16 mm, and the diameter is 0.1-0.3 mm.
Further, the water reducing agent is a polycarboxylic acid water reducing agent or a naphthalene water reducing agent.
Further, the defoaming agent is at least one of a silicone defoaming agent, a polyether defoaming agent, a fatty acid defoaming agent and a phosphate ester defoaming agent.
Further, the fine aggregate is at least one of quartz powder, iron tailing sand and coal gangue powder.
Further, the fine aggregate is prepared from the following components in a mass ratio of 200-300: 220-400 parts of quartz powder and iron tailings; wherein the particle size of the quartz powder is not more than 200 meshes.
Further, the sound-absorbing material is at least one of an inorganic material sound-absorbing board, a foamed metal sound-absorbing board, a foamed cement-based material and a gypsum-based material.
The sound-absorbing material can be selected according to actual conditions, and the thicknesses of the inorganic material sound-absorbing board and the foamed metal sound-absorbing board can be customized and produced according to the size of the cavity space, so that the best sound-absorbing effect is achieved.
Further, the inorganic material sound-absorbing board is a sand-based sound-absorbing board, and the sand-based sound-absorbing board comprises a sand-based water-permeable air-impermeable sound-absorbing board, a sand-based air-permeable water-impermeable sound-absorbing board or a sand-based air-permeable/water-permeable sound-absorbing board; wherein the sand is one or a mixture of quartz sand and heavy ferrotitanium tailing sand, and the particle size of the sand is at least one of 0.5-1.0 mm, 1.0-1.5 mm and 1.5-2.0 mm; the bending resistance bearing capacity of the sand-based acoustic panel is not less than 7kPa, and the impact resistance is not less than 35J.
Furthermore, the bonding material of the sand-based sound absorption board is an inorganic bonding material or an organic bonding material; wherein, the inorganic bonding material is preferably 72.5R-grade portland cement, quick-hardening high-alumina cement or magnesium phosphate cement; the organic binder is preferably a polyurethane material, an epoxy resin material or a composite resin.
Further, the foamed metal sound-absorbing board is made of a foamed aluminum material, a foamed copper material or a foamed nickel alloy material, preferably a foamed aluminum material; wherein the density of the foamed metal sound-absorbing board is 150-300 kg/m3The sound absorption coefficient is more than or equal to 0.7, the porosity is more than or equal to 90%, the pore diameter is 1-3 mm, and the compressive strength is more than or equal to 2 Mpa; splicing foamed metal acoustic boardSpecial adhesive glues are conventional in the art.
Furthermore, the molding mode of the back plate and the panel is one-time molding, secondary composite molding or multiple composite molding; the method specifically comprises the following steps: the back plate and the panel can be integrally molded in an automatic grouting and extruding mode; or the back plate and the panel are separately molded and then secondarily compounded, a large cavity structure is molded firstly, the cavity rate is more than or equal to 60 percent, the aperture ratio of the panel can be 4 to 28 percent according to the requirement, and the back plate is reinforced by secondary reinforcement.
The invention also provides an installation method of the integral groove-based direct-buried self-supporting non-metallic sound barrier, which specifically comprises the following steps:
step (1): fixing the vertical downward end of the sound barrier at two sides of a road through pre-embedded type mortar sitting, detachable connecting pieces or pre-embedded type welding;
step (2): and (3) transversely connecting the sound barriers vertically fixed in the step (1), and sealing the vertical and transverse connecting seams.
Further, in the step (2), the transverse connection adopts a detachable connecting piece, pre-buried welding connection, tongue-and-groove connection or tongue-and-groove connection.
Further, in the step (2), a water stop strip, foamed rubber, water-resistant magnesium phosphate mortar or waterproof mortar is adopted for sealing.
In summary, the invention has the following advantages:
1. the invention provides an integral groove-based direct-buried self-supporting non-metallic sound barrier, which improves the mechanical property and durability through the application of an ultrahigh-performance cement-based fiber toughening material; the dead weight and the transportation cost are reduced by the large cavity structure; through the direct-buried self-supporting structure, the installation difficulty of the sound barrier and the cost of a supporting system are reduced.
2. When the sound barrier is under the wind pressure of +/-4 kpa, the maximum elastic disturbance is less than or equal to L/350, the impact resistance is more than or equal to 35J, the mechanical requirement of the high-speed railway sound barrier is met, the acoustic performance sound insulation is more than or equal to 50dB, and the sound absorption coefficient NRC is more than or equal to 0.7.
3. According to the invention, the reinforcing steel bars or steel strands are added into the panel and the back plate made of the ultra-high performance cement-based fiber toughening material, so that the stress performance of the sound barrier is greatly increased, the dependence on steel upright posts during the installation of the sound barrier is eliminated, the problems of high installation difficulty, poor durability caused by the steel upright posts and the like of the existing non-metal sound barrier are effectively solved, and the service life of the existing non-metal sound barrier can reach more than 150 years.
Drawings
FIG. 1 is a schematic view of the structure of the sound barrier of the present invention;
FIG. 2 is a schematic view of a panel of the sound barrier of the present invention;
FIG. 3 is a schematic illustration of the back panel reinforcement of the sound barrier of the present invention;
FIG. 4 is a schematic view of the sound barrier of the present invention with the sound absorbing material filled flat in the intermediate chamber;
FIG. 5 is a schematic view of the diagonal filling of the sound absorbing material in the intermediate chamber of the sound barrier of the present invention;
fig. 6 is a schematic view of the acoustic barrier of the present invention without filling the intermediate chamber with sound absorbing material.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides an integral groove-based direct-buried self-standing non-metallic sound barrier, which comprises a sound barrier main body, wherein the sound barrier main body is in a direct-buried self-standing structure and comprises a panel with a hole on the surface, a back plate without a hole on the surface and four partition rib plates, the panel, the back plate and the four partition rib plates form a middle cavity, and the middle cavity is not filled with sound absorption materials. As shown in fig. 6, the sound-absorbing plate is not filled in the large-cavity sound barrier, the height of the large-cavity sound barrier is 3m, the reinforcing bars of the back plate and the face plate are 200mm × 200mm, the nominal diameter of the back plate and the face plate is 5mm, the thickness of the back plate and the face plate is 30 mm; the lower end of the sound barrier is fixed by adopting the pre-embedded mortar, the vertical joint of the sound barrier is sealed by adopting a water stop bar, the surface aperture ratio is 20 percent, and the sound barrier is arranged at the two sides of the road to absorb noise;
the ultrahigh-performance cement-based fiber toughening material comprises the following components in parts by mass: 600 parts of ordinary portland cement (with the strength grade of 42.5R), 550 parts of limestone powder with the particle size of 100-200 mu m, 45 parts of early strength component (specifically consisting of 40:1 sulphoaluminate cement and anhydrous sodium sulfate by mass ratio), 25 parts of fiber (specifically polyvinyl alcohol fiber with the length of 8-16 mm and the diameter of 0.1-0.3 mm), 8 parts of water reducing agent (specifically polycarboxylic acid water reducing agent), 2 parts of defoaming agent (specifically organic silicon defoaming agent with the product model of AFE-76-10), 320 parts of water and 500 parts of fine aggregate (specifically consisting of 200: 300 quartz powder and iron tailings by mass ratio, wherein the particle size of the quartz powder is not more than 200 meshes).
The mounting method of the integral groove-based direct-buried self-supporting non-metallic sound barrier specifically comprises the following steps:
step (1): fixing the vertical downward end of the sound barrier at two sides of a road through pre-embedded type mortar sitting, detachable connecting pieces or pre-embedded type welding;
step (2): and (2) adopting a detachable connecting piece to carry out transverse connection on the vertically fixed sound barrier in the step (1), and adopting a water stop strip to seal vertical and transverse connecting joints.
Example 2
This example provides an integral channel-based directly-buried self-standing non-metallic sound barrier, which is similar to example 1 except that the sound-absorbing plate is filled with sand-based particles (wherein the sand is quartz sand, the particle size of the sand is 0.5 to 1.0mm, the bending resistance of the sand-based sound-absorbing plate is not less than 7kPa, the impact resistance is not less than 35J, and the binder is 72.5R-grade portland cement), as shown in fig. 1 to 5.
Example 3
In this example, the conditions were the same as in example 1 except that the foamed metal sound-absorbing sheet (of which the material was a foamed aluminum material) was filled.
Example 4
The same conditions as in example 1 were used except that the reinforcing mesh size was 100mm × 100mm, and the foamed metal-filled sound-absorbing sheet (same as in example 1) was used.
Experimental example 1
This example performs a performance test: the sound barrier performance in the examples 1 to 4 is detected according to TBT3122-2010 "railway sound barrier member and test method", wherein the base material compressive strength and water absorption are measured using a test piece of 100mm × 100mm × 100 mm; fire endurance is in accordance with standard (GBT 9978.8-2008) method for fire testing of building components part 8: special requirements for non-load bearing vertical partition members.
Table 1 examples 1-4 sound barrier physical and mechanical properties
Table 2 examples 1-4 thermodynamic and acoustical barrier properties
| Item | Combustion performance | Limit of fire resistance (h) | Sound insulation performance (dB) | Coefficient of sound absorption NRC |
| Example 1 | A1 | 3.5 | 35 | 0.35 |
| Example 2 | A1 | 3.5 | 53 | 0.73 |
| Example 3 | A1 | 3.0 | 55 | 0.75 |
| Example 4 | A1 | 3.0 | 56 | 0.75 |
As can be seen from the test data in the above table, the substrate density of the sound barrier of the present invention is 1900kg/m3The volume water absorption rate is less than or equal to 7 percent, and the density of the prefabricated wall panel with the thickness of 140mm is 100-130 kg/m2The fireproof door can resist wind load of more than 4kPa, has the fireproof limit of more than 3.5h and the combustion performance grade of A1, and has light weight, high strength and excellent fireproof and fireproof functions.
The foregoing is merely exemplary and illustrative of the present invention and it is within the purview of one skilled in the art to modify or supplement the embodiments described or to substitute similar ones without the exercise of inventive faculty, and still fall within the scope of the claims.
Claims (10)
1. The utility model provides an integral groove base direct-burried self-reliance nonmetal sound barrier which characterized in that, includes the sound barrier main part, and the sound barrier main part is direct-burried self-reliance structure, and the sound barrier main part includes the panel of surperficial trompil, the backplate and the four rib plates that separate of surface trompil, and cavity in the middle of panel, backplate and four rib plates constitution, middle cavity is filled with sound absorbing material.
2. The integral trench-based, direct-buried, self-standing, nonmetallic sound barrier of claim 1, wherein the face plate and back plate are both made of a reinforced, ultra-high performance, cement-based, fiber-toughened material; wherein, the reinforcing bar type is twisted steel, prestressing wire or prestressing steel strand wires, and reinforcing bar net mesh size selects one of following three kinds of specifications according to actual conditions: 100mm × 100mm, 100mm × 200mm, 200mm × 200 mm; the diameters of the steel bars, the steel wires and the steel strands are all 5-16 mm.
3. The integral channel-based, direct-burried, self-standing, nonmetallic sound barrier of claim 1, wherein said sound-absorbing material is at least one of an inorganic-material sound-absorbing panel, a foamed-metal sound-absorbing panel, a foamed-cement-based material, and a gypsum-based material.
4. The unitary, tank-based, direct-burried, self-standing, nonmetallic sound barrier of claim 3, wherein said inorganic-material sound-absorbing panel is a sand-based sound-absorbing panel comprising a sand-based water-permeable, air-impermeable, sand-based air-permeable, water-impermeable, or sand-based air/water-permeable sound-absorbing panel; wherein the sand is one or a mixture of quartz sand and heavy ferrotitanium tailing sand, and the particle size of the sand is at least one of 0.5-1.0 mm, 1.0-1.5 mm and 1.5-2.0 mm; the bending resistance bearing capacity of the sand-based acoustic panel is not less than 7kPa, and the impact resistance is not less than 35J.
5. The unitary, channel-based, direct-burried, self-standing, nonmetallic sound barrier of claim 4, wherein the bonding material of said sand-based acoustical panel is an inorganic bonding material or an organic bonding material.
6. The integral channel-based direct-buried self-standing nonmetallic sound barrier according to claim 3, wherein said foamed metal sound-absorbing panel is made of a foamed aluminum material, a foamed copper material or a foamed nickel alloy material.
7. The integral channel-based direct-buried self-standing nonmetallic sound barrier according to claim 1, wherein the back plate and the face plate are molded in a one-shot molding, a two-shot composite molding or a multiple-shot composite molding.
8. The method for installing the integral channel-based direct-buried self-standing non-metallic sound barrier according to any one of claims 1 to 7, comprising the steps of:
step (1): fixing the vertical downward end of the sound barrier at two sides of a road through pre-embedded type mortar sitting, detachable connecting pieces or pre-embedded type welding;
step (2): and (3) transversely connecting the sound barriers vertically fixed in the step (1), and sealing the vertical and transverse connecting seams.
9. The method for installing an integral slot-based direct-buried self-supporting nonmetallic sound barrier according to claim 8, wherein the transverse connection in the step (2) is a detachable connecting piece, a pre-buried welding connection, a tongue-and-groove connection or a tongue-and-groove connection.
10. The method of installing a unitary slot-based, direct-burried, self-standing, nonmetallic sound barrier according to claim 8, wherein the sealing in step (2) is performed using a water stop bar, a foamed rubber, a water-resistant magnesium phosphate mortar, or a waterproof mortar.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002250014A (en) * | 2001-02-26 | 2002-09-06 | Kumagai Gumi Co Ltd | Sound insulating wall |
| US20160118034A1 (en) * | 2014-09-30 | 2016-04-28 | Sichuan Zisen Acoustics Technical Co., Ltd. | Particulate Sound Barrier and Sound Absorption/Insulation Board Thereof |
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| US20160118034A1 (en) * | 2014-09-30 | 2016-04-28 | Sichuan Zisen Acoustics Technical Co., Ltd. | Particulate Sound Barrier and Sound Absorption/Insulation Board Thereof |
| CN205369069U (en) * | 2015-12-16 | 2016-07-06 | 四川云路科技有限公司 | High -speed railway sound barrier is with nonmetal compound sound absorption and insulation board |
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| CN107794851A (en) * | 2017-11-25 | 2018-03-13 | 桂林理工大学 | The preparation method of prestressing force RPC acoustic barrier unit board |
| CN108726981A (en) * | 2018-09-05 | 2018-11-02 | 合肥久新不锈钢厨具有限公司 | A kind of sound absorption architectural material and preparation method thereof |
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