CN111254848A - Assembled sound absorption and noise reduction platform wall and mold and construction process thereof - Google Patents
Assembled sound absorption and noise reduction platform wall and mold and construction process thereof Download PDFInfo
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- CN111254848A CN111254848A CN202010075951.0A CN202010075951A CN111254848A CN 111254848 A CN111254848 A CN 111254848A CN 202010075951 A CN202010075951 A CN 202010075951A CN 111254848 A CN111254848 A CN 111254848A
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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
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
- E01F8/0064—Perforated plate or mesh, e.g. as wall facing
- E01F8/007—Perforated plate or mesh, e.g. as wall facing with damping material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses an assembled sound absorption and noise reduction platform wall and a mold and a construction process thereof. Platform wall includes concrete placement facade layer and concrete placement back layer, and the track in the concrete placement facade layer orientation railway platform, wherein: the concrete pouring front layer and the concrete pouring back layer are fixedly connected through a heat insulation connecting piece and are provided with a sound absorption and noise reduction layer; the concrete pouring front layer and the concrete pouring back layer are connected into a whole through the edge connecting wall body at the peripheral edge of the sound absorption and noise reduction layer; a plurality of holes which are arranged in a matrix form penetrate through the concrete pouring front layer, and the positions of the sound absorption and noise reduction layers, which are positioned in the holes, are communicated with the holes and exposed; the sound absorption and noise reduction layer is made of sound absorption and noise reduction materials, and the sound absorption and noise reduction materials are ceramsite concrete or centrifugal glass wool. The platform wall effectively solves the problem of noise pollution caused by the arrival of railway vehicles such as trains and motor cars, particularly the arrival of railway vehicles without stopping.
Description
Technical Field
The invention relates to an assembled sound absorption and noise reduction platform wall applied to a railway station house, a mold used by the assembled sound absorption and noise reduction platform wall and a construction process of the assembled sound absorption and noise reduction platform wall, and belongs to the technical field of platform wall structures of railway station houses.
Background
At present, most of platform walls used in conventional railway station houses in China adopt cast-in-place concrete structures, and the platform walls in the structural form are firm and durable and are widely applied to various occasions. However, as the living standard is improved, people have higher requirements on the comfort level of the living environment. For a traditional platform wall realized by adopting a cast-in-place concrete structure, when railway vehicles (such as trains, motor cars and the like) enter a station room, and particularly when the railway vehicles enter the station room and do not stop, great noise is generated in the station room, great noise pollution is caused to passengers in the platform, and the riding comfort of the passengers is influenced. Therefore, the technical scheme capable of effectively reducing noise is designed in the station house, and the problem which needs to be solved at present is urgently needed.
Disclosure of Invention
The invention aims to provide an assembled sound absorption and noise reduction platform wall, a mold thereof and a construction process, wherein the assembled sound absorption and noise reduction platform wall effectively solves the problem of noise pollution caused by the arrival of railway vehicles such as trains and motor cars, particularly the arrival of railway vehicles without parking.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an assembled sound absorption and noise reduction platform wall which characterized in that: it includes concrete placement facade layer and concrete placement back layer, the track in the concrete placement facade layer orientation railway platform, wherein: the concrete pouring front layer and the concrete pouring back layer are fixedly connected through a heat insulation connecting piece and are provided with a sound absorption and noise reduction layer; the concrete pouring front layer and the concrete pouring back layer are connected into a whole through the edge connecting wall body at the peripheral edge of the sound absorption and noise reduction layer; a plurality of holes which are arranged in a matrix form penetrate through the concrete pouring front layer, and the positions of the sound absorption and noise reduction layers, which are positioned in the holes, are communicated with the holes and exposed; the sound absorption and noise reduction layer is made of sound absorption and noise reduction materials, and the sound absorption and noise reduction materials are ceramsite concrete or centrifugal glass wool.
The utility model provides a mould that assembled sound absorption and noise reduction platform wall used which characterized in that: the mould includes end steel sheet, and relative two sides are fixed with horizontal steel sheet and all the other relative two sides are fixed with perpendicular steel sheet through fixed connector in four sides of end steel sheet, and adjacent horizontal steel sheet is fixed through fastening bolt with erecting between the steel sheet, and end steel sheet and horizontal steel sheet, perpendicular steel sheet constitute jointly and pour the groove, wherein: the bottom steel plate is provided with a plurality of openings which are arranged in a matrix form, the openings are detachably provided with hole forming blocks for forming the holes, and the hole forming blocks protrude from the bottom steel plate into the pouring groove.
A construction process realized based on the die is characterized by comprising the following steps:
1) applying an oily release agent in the pouring groove of the mold;
2) constructing the concrete pouring front layer:
binding reinforcing steel bars in gaps among the hole forming blocks to form a front reinforcing mesh, connecting and fixing one end of the heat-insulating connecting piece with the front reinforcing mesh, and then pouring concrete to form a concrete pouring front layer, wherein the pouring height of the concrete pouring front layer is consistent with the projection height of the hole forming blocks;
3) constructing the sound absorption and noise reduction layer:
if the sound absorption and noise reduction layer adopts ceramsite concrete, erecting vertical steel plates on the inner sides of the transverse steel plates and the vertical steel plates, and pouring ceramsite concrete in a groove body formed by the vertical steel plates and the concrete pouring front layer to form the sound absorption and noise reduction layer;
if the sound absorption and noise reduction layer adopts centrifugal glass wool, erecting vertical steel plates on the inner sides of the transverse steel plates and the vertical steel plates, and placing the centrifugal glass wool in a groove body formed by the vertical steel plates and the concrete pouring front layer so as to form the sound absorption and noise reduction layer;
4) constructing the concrete pouring back layer and the edge connecting wall body:
binding reinforcing steel bars on the sound absorption and noise reduction layer to form a back reinforcing mesh and binding reinforcing steel bars on the periphery of the sound absorption and noise reduction layer to form an edge reinforcing mesh, connecting and fixing the other end of the heat preservation connecting piece with the back reinforcing mesh, and then pouring concrete to synchronously form the concrete pouring back layer and the edge connecting wall;
5) and the construction of the assembled sound absorption and noise reduction platform wall is completed.
The invention has the advantages that:
1. the assembled sound absorption and noise reduction platform wall greatly reduces the noise generated when railway vehicles such as trains, motor cars and the like enter the station, particularly when the railway vehicles enter the station and do not stop, has good sound absorption and noise reduction effects, has the noise reduction coefficient of 0.5-0.7, and is suitable for wide popularization in railway station houses.
2. The assembled sound absorption and noise reduction platform wall is used as a prefabricated component, can be quickly constructed by virtue of the special die, and is high in construction efficiency and low in construction cost.
Drawings
Fig. 1 is a schematic front view of a fabricated sound absorbing and noise reducing platform wall according to the present invention.
Fig. 2 is a rear view schematic of fig. 1.
Fig. 3 is an enlarged schematic view of the section a-a of fig. 1.
Fig. 4 is a schematic view showing the arrangement of reinforcing bars and insulation connecting members when viewed from the front of the assembled sound absorbing and noise reducing platform wall according to the present invention.
Fig. 5 is a schematic view showing the arrangement of reinforcing bars and insulation connecting members, as seen from the rear surface of the assembled sound absorbing and noise reducing platform wall according to the present invention.
Fig. 6 is an enlarged sectional view of fig. 5 from B-B.
Fig. 7 is a schematic perspective view of the inventive die.
Fig. 8 is a schematic structural view of the mold of the present invention.
Fig. 9 is a schematic bottom view of fig. 8.
Detailed Description
The assembled sound absorption and noise reduction platform wall 10 of the present invention is a three-layer composite structure, as shown in fig. 1, which shows a schematic front view of the assembled sound absorption and noise reduction platform wall 10 of the present invention, and fig. 2 shows a schematic back view of the assembled sound absorption and noise reduction platform wall 10 of the present invention.
As shown in fig. 1 to 6, the fabricated sound-absorbing and noise-reducing platform wall 10 of the present invention includes a concrete-poured front layer 11 and a concrete-poured back layer 12 which are oppositely disposed, the concrete-poured front layer 11 facing the rails in the railway platform and the concrete-poured back layer 12 facing away from the rails, wherein: the concrete pouring front layer 11 and the concrete pouring back layer 12 are fixedly connected through the heat preservation connecting piece 20 and are provided with the sound absorption and noise reduction layer 13 for sound absorption and noise reduction, namely the sound absorption and noise reduction layer 13 is arranged between the concrete pouring front layer 11 and the concrete pouring back layer 12; at the peripheral edge of the sound absorption and noise reduction layer 13, the concrete pouring front layer 11 and the concrete pouring back layer 12 are connected into a whole through an edge connecting wall 16; a plurality of holes 110 arranged in a matrix form penetrate through the concrete pouring front layer 11, the part of the sound absorption and noise reduction layer 13, which is positioned at the holes 110, is communicated with the holes 110 and is exposed towards the track through the holes 110, so that noise generated by the running of railway vehicles can be smoothly transmitted to the sound absorption and noise reduction layer 13 through the holes 110 to be absorbed and noise reduced, in other words, the holes 110 penetrate through the concrete pouring front layer 11; the sound absorption and noise reduction layer 13 is made of sound absorption and noise reduction materials, and the sound absorption and noise reduction materials are ceramsite concrete or centrifugal glass wool.
In the actual design, as shown in fig. 4, the concrete poured front layer 11 is formed by pouring concrete on the basis of the front mesh reinforcement formed by the tie bars 111. As shown in fig. 5, the concrete-poured back layer 12 is formed by pouring concrete on the basis of a back mesh reinforcement formed by tie bars 121. As shown in fig. 6, the edge-connected wall 16 is formed by pouring concrete into an edge reinforcing mesh formed of tie bars 161.
Further, the concrete poured on the concrete pouring front layer 11, the concrete pouring back layer 12 and the edge connecting wall 16 is C40 fine stone concrete which is a common material in the field.
In order to ensure the sound absorption and noise reduction effects and the integral forming effect of the ceramsite concrete, a large number of tests finally determine that the ceramsite concrete is suitable for the following mixture ratio, specifically:
the ceramsite concrete comprises a cementing material, ceramsite and a liquid water reducing agent, wherein:
the mass ratio of the liquid water reducing agent to the gelled material to the ceramsite is as follows: and (3) cementing materials: ceramsite 1.4: 100: 200;
the cementing material is prepared by mixing cement, sand and fly ash, wherein the mass ratio of the cement to the sand to the fly ash is 2: 7: 1;
the grain diameter of the ceramsite is 3 mm-5 mm.
The strength grade of the ceramsite concrete prepared by the above proportion can reach LC 7.5.
In practical implementation, the liquid water reducing agent is, for example, a polycarboxylic acid water reducing agent, and the like, and the ceramsite, the cement, the sand and the fly ash are all common materials in the building field, which are not described in detail herein.
In the present invention, the centrifugal glass wool is preferably 110Kg/m in volume weight3The centrifugal glass wool of (1).
In the invention, the ceramsite concrete and the centrifugal glass wool can be mutually replaced, and both can achieve the purposes of sound absorption and noise reduction.
In practical design, the insulating connecting members 20 are preferably FRP connecting members and arranged in a quincunx shape, as will be understood with reference to fig. 4 and 5, which effectively supports the entire structure and improves stability.
In operation, the insulated connectors 20 are connected between the front reinforcing mesh of the concrete poured front layer 11 and the back reinforcing mesh of the concrete poured back layer 12.
As shown in fig. 2 and 6, the concrete poured back layer 12 is extended towards both sides with a column-joining wall 15 for connection with a structural column (not shown) of the railway platform, wherein: the column combination wall body 15 and the adjacent edge connection wall body 16 are integrally poured; the column-bonded wall 15 is connected to the structural column in a plain end manner.
In the present invention, the concrete-poured front layer 11, the concrete-poured back layer 12, and the reinforcing steel bar nets for the front, back, and edge, which are bound in the edge-connected wall 16, are shown in fig. 4, 5, and 6. The columns are formed in conjunction with reinforcing mesh within the wall 15, such as may be formed by concrete poured reinforcement 121 of the backing layer 12. The various reinforcing meshes are usually formed by binding transverse and vertical reinforcing bars, which are conventional in the art and will not be described in detail herein.
In practical design, the ratio of the thickness of the concrete pouring front layer 11 to the overall thickness of the fabricated sound absorption and noise reduction platform wall 10 of the present invention is 1: 4, i.e., the ratio of the depth of the hole 110 to the overall thickness of the fabricated sound absorption and noise reduction platform wall 10 of the present invention is 1: 4.
In practical design, the cross-sectional shape of the hole 110 is not limited, and may be square, rectangular, circular, oval, etc.
In actual practice, as shown in fig. 2, the fixing nuts 14 are embedded on the outward facing surface of the concrete casting back surface layer 12. Fig. 2 shows the situation that four fixing nuts 14 are embedded in the concrete pouring back layer 12, two fixing nuts 14 are located at 1/3, the other two fixing nuts 14 are located at 2/3, and the distance between the two fixing nuts 14 at the same height is 2100 mm. The fixing nut 14 is used to fix the diagonal brace so as to fix the fabricated sound absorbing and noise reducing platform wall 10 of the present invention more stably on one side of the railway platform.
In addition, a hanging nail (not shown in the figure) for hoisting can be embedded in the top of the assembly type sound absorption and noise reduction platform wall 10, and a key groove (not shown in the figure) for increasing the contact area of the platform wall and the main body structure of the railway platform can be reserved on the top of the assembly type sound absorption and noise reduction platform wall 10.
In the present invention, the concrete poured facade layer 11, the concrete poured back surface layer 12 and the thermal insulation connecting members 20 mainly serve the purpose of stably supporting the entire platform wall structure.
The present invention further provides a mold 30 used for the assembled sound absorption and noise reduction platform wall 10 of the present invention, as shown in fig. 7 to 9, the mold 30 of the present invention includes a bottom steel plate 31, the size of the bottom steel plate 31 is adapted to the size of the assembled sound absorption and noise reduction platform wall 10 of the present invention, two opposite sides of the four sides of the bottom steel plate 31 are fixed with a horizontal steel plate 32 through a fixed connecting member 34, the other two opposite sides are fixed with a vertical steel plate 33 through a fixed connecting member 34, the adjacent horizontal steel plate 32 and the vertical steel plate 33 are fixed through a fastening bolt 36, the bottom steel plate 31, the two horizontal steel plates 32 and the two vertical steel plates 33 form a casting groove together, wherein: the bottom steel plate 31 is provided with a plurality of openings (not shown) arranged in a matrix form, the openings are detachably provided with hole forming blocks 310 for forming the holes 110, the hole forming blocks 310 protrude from the bottom steel plate 31 into the pouring groove, the hole forming blocks 310 are bowl-shaped, and the depth of the hole forming blocks 310 is consistent with that of the holes 110.
In practical design, the hole forming block 310 is preferably made of rubber material to facilitate demolding.
In practical manufacturing, the mold 30 of the present invention is integrally formed by a steel plate with a thickness of 10mm, wherein the bottom steel plate 31 and the horizontal steel plate 32 can be integrally formed by bending a single steel plate, so as to ensure smooth transition of the yin and yang angular positions of the platform wall 10 of the present invention.
In practical design, the vertical steel plates 33 are bent toward two sides to form bent portions 35 for casting the two side pillar joining walls 15 of the assembled sound absorption and noise reduction platform wall 10 according to the present invention, as shown in fig. 9.
For the assembled sound absorption and noise reduction platform wall 10 of the invention, the invention also provides a construction process realized based on the die 30 of the invention, which comprises the following steps:
1) in order to ensure the positive impression effect of the platform wall 10, an oily release agent (conventional release agent) is coated in the pouring groove of the mold 30 of the invention;
2) construction concrete pouring front layer 11:
binding reinforcing steel bars 111 in gaps among the hole forming blocks 310 to form a front reinforcing mesh, connecting and fixing one end of the heat-insulating connecting piece 20 with the front reinforcing mesh, then pouring concrete to form a concrete pouring front layer 11, wherein the pouring height of the concrete pouring front layer 11 is consistent with the projection height of the hole forming blocks 310;
3) before the initial setting of the concrete pouring front layer 11, the sound absorption and noise reduction layer 13 is constructed:
if the sound absorption and noise reduction layer 13 is made of ceramsite concrete, a vertical steel plate (not shown in the figure) with a certain thickness is erected on the inner side of each transverse steel plate 32 and each vertical steel plate 33, ceramsite concrete is poured into a groove body formed by each vertical steel plate and the concrete pouring front layer 11 to form the sound absorption and noise reduction layer 13, the pouring height of the sound absorption and noise reduction layer 13 is determined according to the actual requirement but is lower than the notch position of the whole pouring groove, and the size of the groove body formed by each vertical steel plate is slightly smaller than that of the bottom steel plate 31 so as to form an edge connecting wall body 16;
if the sound absorption and noise reduction layer 13 is made of centrifugal glass wool, a vertical steel plate (not shown in the figure) with a certain thickness is erected on the inner side of each transverse steel plate 32 and each vertical steel plate 33, the centrifugal glass wool is placed in a groove body formed by each vertical steel plate and the concrete pouring front layer 11 and is positioned on the concrete pouring front layer 11, so that the sound absorption and noise reduction layer 13 is formed, the height of the sound absorption and noise reduction layer 13 is determined according to actual requirements but is lower than the notch position of the whole pouring groove, and the size of the groove body formed by each vertical steel plate is slightly smaller than that of the bottom steel plate 31 so as to be convenient for forming the edge connecting wall 16;
4) and (3) immediately constructing a concrete pouring back layer 12 and an edge connecting wall 16 after the construction of the sound absorption and noise reduction layer 13:
binding reinforcing steel bars 121 on the sound absorption and noise reduction layer 13 to form a back reinforcing steel bar mesh and binding reinforcing steel bars 161 on the periphery of the sound absorption and noise reduction layer 13 to form an edge reinforcing steel bar mesh, connecting and fixing the other end of the heat preservation connecting piece 20 with the back reinforcing steel bar mesh, then pouring concrete to synchronously form a concrete pouring back layer 12 and an edge connecting wall 16, wherein the pouring heights of the concrete pouring back layer 12 and the edge connecting wall 16 are consistent and are flush with the notch of the whole pouring groove;
5) the construction of the assembled sound absorption and noise reduction platform wall 10 is completed.
In actual construction, if the mold 30 of the present invention is designed with the bent portion 35, the reinforcement bars 121 and 161 are simultaneously tied and simultaneously the reinforcement bars required for pouring the pillar-bonded wall 15 are simultaneously tied, and then concrete is poured, so that the pillar-bonded wall 15 is formed simultaneously with the concrete-poured back layer 12 and the edge-connected wall 16.
In actual construction, before the fabricated sound absorption and noise reduction platform wall 10 of the present invention is fabricated, the mold 30 of the present invention is erected and fixed on the i-steel 40. The concrete pouring front layer 11 is preferably poured on a vibration platform to ensure the vibration effect of the concrete, specifically: and vibrating the concrete pouring front layer 11 after pouring is finished, wherein the vibration time is controlled to be 2-3 min.
In practical implementation, the whole concrete can be steamed and cured after being poured, and the steaming and curing time can be designed to be about 8 hours.
In the present invention, it is defined that one side of the assembled sound absorption and noise reduction platform wall 10 of the present invention facing the platform rail is a front side, and the other side of the assembled sound absorption and noise reduction platform wall 10 opposite to the front side is a back side.
Examples are:
the assembled sound absorption and noise reduction platform wall 10 is designed to be a rectangle of 3905mm multiplied by 1310mm, the thickness of the whole platform wall 10 is 160mm, the thickness of the concrete pouring front surface layer 11 and the concrete pouring back surface layer 12 is designed to be 40mm, the thickness of the sound absorption and noise reduction layer 13 is designed to be a rectangle of 3665mm multiplied by 1005mm, the thickness is designed to be 80mm, namely, the ratio of the thickness of the concrete pouring front surface layer 11 to the whole thickness of the assembled sound absorption and noise reduction platform wall 10 is 1: 4. The holes 110 have a square cross section, and thus the size of the square cross section of the holes 110 is designed to be 55mm x 55mm in order to secure an open area for facilitating the entry of noise into the noise absorption and reduction layer 13. The distance between the holes 110 and the holes 110 can be designed reasonably, without limitation, for example, the distance between the holes 110 and the holes 110 is designed to be 45 mm.
In this example, the sound absorption and noise reduction material of the sound absorption and noise reduction layer 13 is ceramsite concrete, and then:
the mass of the liquid water reducing agent, the mass of the cementing material and the mass of the ceramsite are respectively 3.92kg, 280kg and 560kg, wherein: the cement is PO42.5 type cement, the sand is medium coarse sand, the fly ash is I-grade fly ash, the mass of the cement, the sand and the fly ash is respectively selected to be 56kg, 196kg and 28kg, wherein the ceramsite is selected from ceramsite with different particle sizes mixed within the range of 3 mm-5 mm, and the liquid water reducing agent is SMS polycarboxylic acid high-performance water reducing agent (standard type). The ceramsite concrete with the strength grade reaching LC7.5 can be prepared by the method, and the sound absorption and noise reduction effects are good.
When the holes 110 of the assembled sound absorption and noise reduction platform wall 10 of the present invention are square holes, since the holes are too many and the combination surface of the concrete and the mold 30 is too large during the demolding process, which causes the demolding difficulty, the hole forming block 310 of the mold 30 of the present invention is designed to be an inverted regular prism structure, the size of the hole forming block 310 on the surface of the bottom steel plate 31 is 55mm × 55mm, and the size of the hole forming block extending into the casting groove is 30mm × 30 mm.
In implementation, the assembled sound-absorbing and noise-reducing platform wall 10 is arranged on two sides of a rail of a railway station room, the column combination wall bodies 15 on two sides of the assembled sound-absorbing and noise-reducing platform wall 10 are connected with structural columns of a railway platform in an assembling mode, and the assembled sound-absorbing and noise-reducing platform wall 10 is fixed by means of the design of inclined struts, hanging nails and key grooves.
When railway vehicles such as trains, motor trains and the like enter a railway platform, particularly when the railway vehicles enter the railway platform and do not stop, a large number of tiny and communicated pores are formed inside the sound absorption and noise reduction material such as ceramsite concrete or centrifugal glass wool used in the assembled sound absorption and noise reduction platform wall 10, so that noise sound waves penetrate into the interior along the pores and have a friction effect with self materials to convert sound energy into heat energy, thereby achieving a sound absorption effect and reducing noise influence.
The invention has the advantages that:
1. the assembled sound absorption and noise reduction platform wall greatly reduces the noise generated when railway vehicles such as trains, motor cars and the like enter the station, particularly when the railway vehicles enter the station and do not stop, has good sound absorption and noise reduction effects, has the noise reduction coefficient of 0.5-0.7, and is suitable for wide popularization in railway station houses.
2. The assembled sound absorption and noise reduction platform wall is used as a prefabricated component, can be quickly constructed by virtue of the special die, and is high in construction efficiency and low in construction cost.
The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solutions of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.
Claims (12)
1. The utility model provides an assembled sound absorption and noise reduction platform wall which characterized in that: it includes concrete placement facade layer and concrete placement back layer, the track in the concrete placement facade layer orientation railway platform, wherein: the concrete pouring front layer and the concrete pouring back layer are fixedly connected through a heat insulation connecting piece and are provided with a sound absorption and noise reduction layer; the concrete pouring front layer and the concrete pouring back layer are connected into a whole through the edge connecting wall body at the peripheral edge of the sound absorption and noise reduction layer; a plurality of holes which are arranged in a matrix form penetrate through the concrete pouring front layer, and the positions of the sound absorption and noise reduction layers, which are positioned in the holes, are communicated with the holes and exposed; the sound absorption and noise reduction layer is made of sound absorption and noise reduction materials, and the sound absorption and noise reduction materials are ceramsite concrete or centrifugal glass wool.
2. The fabricated sound absorbing and noise reducing platform wall of claim 1, wherein:
the concrete pouring front layer is formed by pouring concrete based on a front reinforcing mesh formed by binding reinforcing steel bars;
the concrete pouring back layer is formed by pouring concrete on the basis of a back reinforcing mesh formed by binding reinforcing steel bars;
the edge connecting wall body is formed by pouring concrete based on an edge reinforcing mesh formed by binding reinforcing steel bars.
3. The fabricated sound absorbing and noise reducing platform wall of claim 2, wherein:
the concrete poured on the concrete pouring front layer, the concrete pouring back layer and the edge connecting wall body is C40 fine stone concrete.
4. The fabricated sound absorbing and noise reducing platform wall of claim 1, wherein:
the ceramsite concrete comprises a cementing material, ceramsite and a liquid water reducing agent, wherein: the mass ratio of the liquid water reducing agent to the gelled material to the ceramsite is 1.4: 100: 200; the cementing material is prepared by mixing cement, sand and fly ash, wherein the mass ratio of the cement to the sand to the fly ash is 2: 7: 1; the grain diameter of the ceramsite is 3 mm-5 mm.
5. The fabricated sound absorbing and noise reducing platform wall of claim 1, wherein:
the volume weight of the centrifugal glass wool is 110Kg/m3The centrifugal glass wool of (1).
6. The fabricated sound absorbing and noise reducing platform wall of claim 1, wherein:
the heat-insulation connecting pieces are FRP connecting pieces and are arranged in a plum blossom shape.
7. The fabricated sound absorbing and noise reducing platform wall of claim 1, wherein:
concrete placement back surface course extends towards both sides has the post that is used for being connected with the structure post of railway platform and combines the wall body, wherein: the column combination wall body and the adjacent edge connection wall body are integrally poured; the column-combined wall body is connected with the structural column in a flat opening mode.
8. The fabricated sound absorbing and noise reducing platform wall of any one of claims 1 to 7, wherein:
the ratio of the thickness of the concrete pouring front layer to the whole thickness of the assembled sound absorption and noise reduction platform wall is 1: 4.
9. A mold for use in an assembled sound absorbing and noise reducing platform wall according to any one of claims 1 to 8, wherein: the mould includes end steel sheet, and relative two sides are fixed with horizontal steel sheet and all the other relative two sides are fixed with perpendicular steel sheet through fixed connector in four sides of end steel sheet, and adjacent horizontal steel sheet is fixed through fastening bolt with erecting between the steel sheet, and end steel sheet and horizontal steel sheet, perpendicular steel sheet constitute jointly and pour the groove, wherein: the bottom steel plate is provided with a plurality of openings which are arranged in a matrix form, the openings are detachably provided with hole forming blocks for forming the holes, and the hole forming blocks protrude from the bottom steel plate into the pouring groove.
10. The mold of claim 9, wherein:
the hole forming block is made of rubber.
11. The mold of claim 9, wherein:
the vertical steel plates extend and bend towards two sides to form bent parts for pouring the column combination wall body.
12. A construction process carried out on the basis of the mould according to any one of claims 9 to 11, characterised in that it comprises the steps of:
1) applying an oily release agent in the pouring groove of the mold;
2) constructing the concrete pouring front layer:
binding reinforcing steel bars in gaps among the hole forming blocks to form a front reinforcing mesh, connecting and fixing one end of the heat-insulating connecting piece with the front reinforcing mesh, and then pouring concrete to form a concrete pouring front layer, wherein the pouring height of the concrete pouring front layer is consistent with the projection height of the hole forming blocks;
3) constructing the sound absorption and noise reduction layer:
if the sound absorption and noise reduction layer adopts ceramsite concrete, erecting vertical steel plates on the inner sides of the transverse steel plates and the vertical steel plates, and pouring ceramsite concrete in a groove body formed by the vertical steel plates and the concrete pouring front layer to form the sound absorption and noise reduction layer;
if the sound absorption and noise reduction layer adopts centrifugal glass wool, erecting vertical steel plates on the inner sides of the transverse steel plates and the vertical steel plates, and placing the centrifugal glass wool in a groove body formed by the vertical steel plates and the concrete pouring front layer so as to form the sound absorption and noise reduction layer;
4) constructing the concrete pouring back layer and the edge connecting wall body:
binding reinforcing steel bars on the sound absorption and noise reduction layer to form a back reinforcing mesh and binding reinforcing steel bars on the periphery of the sound absorption and noise reduction layer to form an edge reinforcing mesh, connecting and fixing the other end of the heat preservation connecting piece with the back reinforcing mesh, and then pouring concrete to synchronously form the concrete pouring back layer and the edge connecting wall;
5) and the construction of the assembled sound absorption and noise reduction platform wall is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010075951.0A CN111254848A (en) | 2020-01-22 | 2020-01-22 | Assembled sound absorption and noise reduction platform wall and mold and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010075951.0A CN111254848A (en) | 2020-01-22 | 2020-01-22 | Assembled sound absorption and noise reduction platform wall and mold and construction process thereof |
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| Publication Number | Publication Date |
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| CN111254848A true CN111254848A (en) | 2020-06-09 |
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| CN202010075951.0A Pending CN111254848A (en) | 2020-01-22 | 2020-01-22 | Assembled sound absorption and noise reduction platform wall and mold and construction process thereof |
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2020
- 2020-01-22 CN CN202010075951.0A patent/CN111254848A/en active Pending
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