CN113547633B - Production process of prestressed nonmetal sound barrier unit plate - Google Patents
Production process of prestressed nonmetal sound barrier unit plate Download PDFInfo
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- CN113547633B CN113547633B CN202110784932.XA CN202110784932A CN113547633B CN 113547633 B CN113547633 B CN 113547633B CN 202110784932 A CN202110784932 A CN 202110784932A CN 113547633 B CN113547633 B CN 113547633B
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0056—Means for inserting the elements into the mould or supporting them in the mould
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0081—Embedding aggregates to obtain particular properties
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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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
- B28B7/0002—Auxiliary parts or elements of the mould
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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
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0008—Venting channels, e.g. to avoid vacuum during demoulding or allowing air to escape during feeding, pressing or moulding
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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
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
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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
- E01F8/0017—Plate-like elements
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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
- E01F8/0023—Details, e.g. foundations
Abstract
The invention relates to a production process of a prestressed non-metallic sound barrier unit plate, which comprises the following production steps: 1) Longitudinally laying two I-shaped steel rails, and arranging a fixed pedestal and a tensioning pedestal; 2) A plurality of forming dies are arranged in series along the upper surface of the steel rail 12; 3) Arranging exhaust holes on a bottom die of the forming die, and installing hoisting embedded parts on side dies; 4) Spraying a release agent on the surface of the inner cavity of the forming die; 5) Placing a ceramsite sound absorption plate on the upper surface of the bottom die, laying prestressed steel bars along the length direction of the steel rail, mounting end dies at two ends of the bottom die, laying a plurality of sound absorption square tubes and firmly fixing; 6) Mounting a prestressed anchorage device and a tensioning jack; 7) Tensioning and locking each prestressed reinforcement; 8) Placing a structural reinforcement cage in the middle at two end positions of a forming die; 9) Sequentially pouring all the forming molds by using a hoisting funnel until the filler is flush with the upper top surface of the mold; 10 After the pouring is finished, standing the mixture until the mixture is initially solidified, covering a heat-preservation shed, and carrying out heat preservation and moisture preservation maintenance.
Description
Technical Field
The invention relates to a production process of a prestressed nonmetal sound barrier unit plate, and particularly belongs to the technical field of sound barriers.
Background
Noise pollution generated during the operation of trains is becoming more serious due to the rapid development of railways. In order to reduce the influence of railway noise, a sound barrier is generally disposed in a place where there is a resident residence to intercept the propagation path of the noise. The sound barrier engineering investment is appropriate, and the sound insulation effect is good, so that the sound barrier engineering sound insulation method becomes an important measure for controlling traffic noise pollution. The prestressed non-metal sound barrier unit plate is formed by manually pouring raw materials into a mould, has large external dimension, high requirement on bending strength, heavier dead weight, built-in high-strength prestressed reinforcing steel bars and special internal structure, so the production process of the prestressed non-metal sound barrier unit plate is greatly different from the production process of the traditional non-metal sound barrier unit plate. The maximum production size of the domestic prestressed non-metallic sound barrier unit plate is 4 meters, and no production process is available, wherein the production process is more than 4 meters. Aiming at the problems, the invention provides the production process of the prestressed non-metallic sound barrier unit plate, which has the advantages of simple structure, convenience in pouring, high production efficiency and high product qualification rate.
Disclosure of Invention
The invention aims to solve the technical problem of providing a production process of a prestressed nonmetal sound barrier unit plate, which has the advantages of simple structure, convenience in pouring, high production efficiency and high product percent of pass.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a production process of a prestressed nonmetal sound barrier unit plate comprises the following production steps:
1) Longitudinally laying two I-shaped steel rails, leveling the upper surfaces of the two I-shaped steel rails, arranging a fixed pedestal at one end of each steel rail, and arranging a tensioning pedestal at the other end of each steel rail;
2) A plurality of forming dies are arranged in series along the upper surface of the steel rail 12 to ensure that the straightness meets the requirement;
3) Arranging exhaust holes on a bottom die of the forming die, and installing hoisting embedded parts on side dies;
4) Spraying a release agent on the surface of the inner cavity of the forming die;
5) Placing a ceramsite sound absorption plate on the upper surface of a bottom die, laying prestressed steel bars along the length direction of a steel rail, mounting end dies at two ends of the bottom die, laying a plurality of sound absorption square tubes along the length direction on the ceramsite sound absorption plate, and fixing the sound absorption square tubes firmly, wherein sound absorption holes in the sound absorption square tubes are tightly attached to the ceramsite sound absorption plate;
6) Mounting prestressed anchorage devices on the prestressed reinforcements at the outer ends of the fixed pedestal and the tensioning pedestal, and mounting a tensioning jack on the prestressed reinforcements at the outer end of the tensioning pedestal;
7) Sequentially tensioning the prestressed reinforcements according to a set tension value, keeping the load for 30-60 s after the tensioning jack reaches the prestress value, checking whether the elongation value is matched with the tension value, and locking a prestressed anchorage at one end of a tensioning pedestal;
8) Placing a structural reinforcement cage in the middle of two end positions of a forming die;
9) Mixing the cement-based composite material for 1-3min by a forced mixer according to the proportion, loading the mixture into a hoisting funnel after stirring, and sequentially pouring each forming mold by the hoisting funnel until the filler is flush with the upper top surface of the mold;
10 After pouring, standing to initial setting, covering a heat-preservation shed, and preserving heat and moisture;
11 Maintaining until the heat preservation and moisture preservation reaches 75% or more of the designed strength, and stopping maintaining;
12 Sequentially placing and cutting off prestressed reinforcements in a left-right symmetrical manner according to a tensioning sequence, and sequentially removing an end mold and a side mold;
13 Carrying the unit plates to a designated position by hoisting embedded parts, uniformly spraying water, covering and curing to the designed strength.
As a further improvement of the invention, in the step 5), the sound-absorbing square pipe is compressed by a compression bar, the middle part of the compression bar is provided with a plurality of compression blocks corresponding to the sound-absorbing square pipe, two ends of the compression bar are provided with two positioning holes, and two sides of the side die are fixedly provided with positioning rods corresponding to the positioning holes.
As a further improvement of the invention, in the step 7), the prestressed reinforcement is integrally tensioned or sequentially and symmetrically tensioned.
As a further improvement of the invention, the hoisting embedded part comprises an embedded sleeve and bolts, the side forms are provided with through holes, the embedded sleeve is arranged on the inner sides of the side forms, internal threads are arranged in the embedded sleeve and fastened on the side forms through the bolts arranged on the outer sides of the side forms, and the inner ends of the embedded sleeve are also lapped with structural ribs.
As a further improvement of the invention, the curing temperature in the step 10) is 25-50 ℃, and the humidity is 80-98%.
As a further improvement of the invention, the bottom of the bottom die is provided with a limiting block at the bottom of the two sides, and the top of the side die is provided with a limiting plate corresponding to the limiting block, so that the forming die can be stacked together in a multi-layer manner; and 9) after the bottom layer forming die is poured, stacking the upper layer forming die and performing tensioning pouring, and performing the tensioning pouring sequentially.
As a further improvement of the invention, the end die is vertically provided with a strip-shaped groove, and the lower end of the end die is open.
As a further improvement of the invention, the prestressed anchorage device comprises an anchorage sleeve and two semi-conical anchorage clamping pieces.
As a further improvement of the invention, the upper surface of the bottom die is provided with a marking line for placing a ceramsite sound absorption plate in the middle.
As a further improvement of the present invention, in step 2), when the forming mold is provided, only the bottom mold and the side mold are provided.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the production process of the prestressed non-metallic sound barrier unit plate, provided by the invention, has the advantages of simple structure, convenience in pouring, high production efficiency and high product qualification rate. The production process solves the problems of prestress tensioning of prestressed reinforcements and batch production of the nonmetal sound barrier unit plates, and a plurality of nonmetal sound barrier unit plates can be simultaneously produced by one-time tensioning. The series connection mode of the production moulds can establish a production line from several meters to hundreds of meters, thereby greatly improving the production efficiency. The forming die can be placed in a plurality of layers in an up-and-down laminated manner, and is tensioned and poured in a layered manner, so that the floor area is small in the production process. The bottom die of the forming die is provided with the exhaust holes, so that the expansion of gas in the unit plate can be effectively avoided during heat preservation and maintenance, and the product percent of pass is improved. The heat preservation shed is erected, the influence of the outside air temperature is avoided, the maintenance period of the nonmetal sound barrier unit plate is shortened, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic top view of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a front view of the compression bar of the present invention.
Fig. 4 isbase:Sub>A schematic sectional view atbase:Sub>A-base:Sub>A in fig. 1.
Fig. 5 is a left side view schematically showing the structure of the molding die of the present invention.
Fig. 6 is a schematic top view of the forming die of the present invention.
FIG. 7 is a schematic sectional front view of the prestressed anchorage device of the present invention.
FIG. 8 is a left side view schematically illustrating the pre-stressed anchor of the present invention.
Wherein: the concrete sound absorption device comprises a fixing pedestal 1, a forming die 2, a bottom die 2-1, a side die 2-2, an end die 2-3, a groove 2-4, a through hole 2-5, a marking line 2-6, a positioning rod 2-7, a prestressed reinforcement 3, a tensioning pedestal 4, a tensioning jack 5, a prestressed anchor 6, an anchor sleeve 6-1, an anchor clamping piece 6-2, a cement-based composite material 7, a ceramsite sound absorption plate 8, a heat preservation shed 9, a pre-embedded sleeve 10, a bolt 11, a steel rail 12, a compression bar 13, a compression block 13-1, a positioning hole 13-2, a sound absorption square pipe 14 and a sound absorption hole 14-1.
Detailed Description
For the purposes of making the present invention more clear and complete, and in conjunction with the detailed description of the embodiments below, it is to be understood that the terms "central," "vertical," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and in a simplified manner, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
The production process of the prestressed nonmetal sound barrier unit plate as shown in fig. 1-8 comprises the following production steps:
1) Two I-shaped steel rails 12 are longitudinally laid, the upper surfaces of the steel rails are leveled, one ends of the steel rails 12 are provided with fixing pedestals 1, and the other ends of the steel rails are provided with tensioning pedestals 4.
2) A plurality of forming dies 2 are arranged in series along the upper surface of the steel rail 12 and are arranged in a row, so that the straightness can meet the requirement; when the forming die 2 is arranged, only the bottom die 2-1 and the side die 2-2 are arranged.
3) A bottom die 2-1 of the forming die 2 is provided with an exhaust hole, and a hoisting embedded part is arranged on the side die 2-2; the bottom die 2-1 is provided with vent holes, so that gas expansion in the nonmetal sound barrier unit plate can be effectively avoided during heat preservation and maintenance, and the product percent of pass is greatly improved.
4) And spraying a release agent on the surface of the inner cavity of the forming die 2.
5) Placing a ceramsite sound-absorbing plate 8 in a square scribing line 2-6 on the upper surface of a bottom die 2-1, laying full-length prestressed steel bars 3 along the length direction of a steel rail 12, mounting end dies 2-3 at two ends of the bottom die 2-1, wherein the prestressed steel bars 3 are positioned at grooves 2-4, laying a plurality of sound-absorbing square tubes 14 on the ceramsite sound-absorbing plate 8 along the length direction and firmly fixing the sound-absorbing square tubes, and tightly attaching sound-absorbing holes 14-1 on the sound-absorbing square tubes 14 to the ceramsite sound-absorbing plate 8 to prevent slurry leakage; a sealing element can be arranged between the edge of the sound absorption hole 14-1 and the ceramsite sound absorption plate 8, and the sealing element is an EVA adhesive tape or a cement-based rectangular frame.
6) And prestressed anchorage devices 6 are arranged on the prestressed reinforcements 3 at the outer ends of the fixed pedestal 1 and the tensioning pedestal 4, and tensioning jacks 5 are arranged on the prestressed reinforcements 3 at the outer end of the tensioning pedestal 4.
7) Sequentially tensioning the prestressed reinforcements 3 according to a set tension value, holding the load for 30-60 s after the tensioning jack 5 reaches the prestress value, checking whether the elongation value is matched with the tension value, and locking a prestressed anchor 6 at one end of the tensioning pedestal 4 after matching; during tensioning, the prestressed reinforcement 3 is integrally tensioned or sequentially and symmetrically tensioned. And sequentially and symmetrically tensioning, namely after the single prestressed reinforcement 3 is tensioned, tensioning the other prestressed reinforcement 3 which is symmetric left and right preferentially, and sequentially tensioning the prestressed reinforcements 3 in pairs left and right.
8) And a structural reinforcement cage is placed in the middle of the two ends of the forming die 2, is formed by binding steel bars, is in a rectangular shape and is placed outside the scribing lines 2-6.
9) And (3) mixing the cement-based composite material for 1-3min by a forced mixer according to the proportion, loading the mixture into a hoisting funnel after stirring, and sequentially pouring each forming mold 2 by the hoisting funnel until the filler is flush with the upper top surface of the mold.
10 After the pouring is finished, standing for several hours until the initial setting, covering a heat-preservation shed 9, and preserving heat and moisture; wherein the curing temperature is 25-50 ℃ and the humidity is 80-98%.
11 When the heat preservation and moisture preservation curing reaches 75% or more of the designed strength, the curing is stopped.
12 Sequentially placing and cutting off the prestressed reinforcement 3 according to the stretching sequence, and sequentially removing the end dies 2-3 and the side dies 2-2; and (4) removing the bolts 11, and solidifying the embedded sleeve 10 in the sound barrier unit plate, so as to facilitate hoisting.
13 Carrying each unit plate to a designated position by hoisting embedded parts, and uniformly spraying water to cover and maintain to the designed strength.
The production process of the prestressed non-metallic sound barrier unit plate is simple in construction, convenient to pour, high in production efficiency and high in product qualification rate. The production process solves the problems of prestress tensioning of the prestressed reinforcement 3 and batch production of the nonmetal sound barrier unit plates, and can simultaneously produce a plurality of nonmetal sound barrier unit plates by one-time tensioning. The series connection mode of the production molds can establish a production line from several meters to hundreds of meters, thereby greatly improving the production efficiency. The heat preservation shed 9 is arranged, so that the influence of the outside air temperature is avoided, the maintenance period of the nonmetal sound barrier unit plate is shortened, and the production efficiency is improved.
As a further optimization, in step 5), the sound-absorbing square tube 14 is compressed by a compression bar 13, the middle of the compression bar 13 is provided with a plurality of pressing blocks 13-1 corresponding to the sound-absorbing square tube 14, two ends of the compression bar are provided with two positioning holes 13-2, and two sides of the side die 2-2 are fixedly provided with positioning rods 2-7 corresponding to the positioning holes 13-2. The hollow sound-absorbing square pipe 14 is pressed by the pressing rod 13, so that the sound-absorbing square pipe 14 is prevented from being cheap and floating when pouring is carried out.
As further optimization, grooves for placing reinforcing steel bars are further formed in the inner sides of the grooves 2-4 penetrating the prestressed steel bars 3, U-shaped steel bars are placed through the grooves before the step 9), and then pouring in the step 9) is carried out, so that the overall structural strength of the nonmetal sound barrier unit plate is enhanced.
In this embodiment, the hoisting embedded part includes an embedded sleeve 10 and a bolt 11, a through hole 2-3 is formed in the side form 2-2, the embedded sleeve 10 is arranged on the inner side of the side form 2-2, an internal thread is arranged in the embedded sleeve, the embedded sleeve is fastened to the side form 2-2 through the bolt 11 arranged on the outer side of the side form 2-2, a structural bar is further fixedly connected to the inner end of the embedded sleeve 10 in a lap joint mode, and the structural bar is poured into the unit plate to enhance the structural strength of the embedded sleeve 10.
Limiting blocks are arranged at the bottoms of the two sides of the bottom die 2-1, and limiting plates corresponding to the limiting blocks are arranged at the tops of the two sides of the side die 2-2, so that the forming die 2 can be stacked together in an up-and-down multi-layer manner; and 9) after the bottom layer forming die 2 is poured, stacking the upper layer forming die 2, tensioning and pouring, and sequentially performing. The forming die 2 can be placed in a plurality of layers in an up-down laminated mode, and is tensioned and poured in a layered mode, and the occupied area in the production process is small.
The end mould 2-3 is vertically provided with a strip-shaped groove 2-4, and the lower end of the end mould is open. And the upper surface of the bottom die 2-1 is provided with a marking line 2-6 for placing a ceramsite sound-absorbing plate 8 in the middle. The prestressed anchorage device 6 comprises an anchorage device sleeve 6-1 and two semi-conical anchorage device clamping pieces 6-2, wherein arc-shaped grooves are reserved on the semi-conical anchorage device clamping pieces 6-2 along the axial direction and are used for clamping the prestressed reinforcement 3.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A production process of a prestressed nonmetal sound barrier unit plate is characterized in that: the method comprises the following production steps:
1) Longitudinally laying two I-shaped steel rails (12), leveling the upper surfaces of the steel rails, arranging a fixed pedestal (1) at one end of each steel rail (12), and arranging a tensioning pedestal (4) at the other end of each steel rail;
2) A plurality of forming dies (2) are arranged in series along the upper surface of the steel rail (12) to ensure that the straightness meets the requirement;
3) A bottom die (2-1) of the forming die (2) is provided with an exhaust hole, and a hoisting embedded part is arranged on the side die (2-2);
4) Spraying a release agent on the surface of the inner cavity of the forming die (2);
5) Placing a ceramsite sound-absorbing plate (8) on the upper surface of the bottom die (2-1), laying prestressed steel bars (3) along the length direction of a steel rail (12), mounting end dies (2-3) at two ends of the bottom die (2-1), laying a plurality of sound-absorbing square tubes (14) on the ceramsite sound-absorbing plate (8) along the length direction and firmly fixing the sound-absorbing square tubes, wherein sound-absorbing holes (14-1) in the sound-absorbing square tubes (14) are tightly attached to the ceramsite sound-absorbing plate (8);
6) Mounting prestressed anchorage devices (6) on the prestressed reinforcements (3) at the outer ends of the fixed pedestal (1) and the tensioning pedestal (4), and mounting tensioning jacks (5) on the prestressed reinforcements (3) at the outer ends of the tensioning pedestal (4);
7) Symmetrically tensioning each prestressed reinforcement (3) in sequence according to a set tension value, holding the load for 30-60 s after the tensioning jack (5) reaches the prestress value, checking whether the elongation value is matched with the tension value, and locking a prestressed anchorage device (6) at one end of a tensioning pedestal (4);
8) A structural reinforcement cage is placed in the middle of the two ends of the forming die (2);
9) Mixing the cement-based composite material (7) for 1-3min by a forced mixer according to a ratio, loading into a hoisting funnel after stirring, and sequentially pouring each forming mold (2) by the hoisting funnel until the filler is flush with the upper top surface of the mold; limiting blocks are arranged at the bottoms of the two sides of the bottom die (2-1), and limiting plates corresponding to the limiting blocks are arranged at the tops of the two sides of the side die (2-2), so that the forming die (2) can be stacked together in an up-down multilayer manner; after the bottom layer forming die (2) is poured, stacking the forming die (2) on the upper layer, and performing tensioning pouring in sequence;
10 After pouring is finished, standing to initial setting, covering a heat-preservation shed (9), and preserving heat and moisture;
11 Maintaining until the heat preservation and moisture preservation reaches 75% or more of the designed strength, and stopping maintaining;
12 Sequentially stretching and cutting off the prestressed reinforcement (3) according to the stretching sequence in a bilateral symmetry manner, and sequentially removing the end dies (2-3) and the side dies (2-2);
13 Carrying the unit plates to a designated position by hoisting embedded parts, uniformly spraying water, covering and curing to the designed strength.
2. The production process of the prestressed non-metallic sound barrier unit plate according to claim 1, wherein: in the step 5), the sound-absorbing square pipe (14) is compressed through a compression rod (13), a plurality of compression blocks (13-1) corresponding to the sound-absorbing square pipe (14) are arranged in the middle of the compression rod (13), two positioning holes (13-2) are formed in two ends of the compression rod, and positioning rods (2-7) corresponding to the positioning holes (13-2) are fixedly arranged on two sides of the side die (2-2).
3. The production process of the prestressed nonmetal sound barrier unit plate according to claim 1, characterized in that: in the step 7), the prestressed reinforcement (3) is integrally tensioned or sequentially and symmetrically tensioned.
4. The production process of the prestressed nonmetal sound barrier unit plate according to claim 1, characterized in that: the hoisting embedded part comprises an embedded sleeve (10) and a bolt (11), a through hole (2-3) is formed in the side die (2-2), the embedded sleeve (10) is arranged on the inner side of the side die (2-2), an internal thread is arranged in the embedded sleeve, the embedded sleeve is fastened on the side die (2-2) through the bolt (11) arranged on the outer side of the side die (2-2), and a structural rib is further lapped at the inner end of the embedded sleeve (10).
5. The production process of the prestressed nonmetal sound barrier unit plate according to claim 1, characterized in that: the curing temperature in the step 10) is 25-50 ℃, and the humidity is 80-98%.
6. The production process of the prestressed nonmetal sound barrier unit plate according to claim 1, characterized in that: the end mould (2-3) is vertically provided with a strip-shaped groove (2-4), and the lower end of the end mould is open.
7. The production process of the prestressed non-metallic sound barrier unit plate according to claim 1, wherein: the pre-stressed anchor (6) comprises an anchor sleeve (6-1) and two semi-conical anchor clamping pieces (6-2).
8. The production process of the prestressed non-metallic sound barrier unit plate according to claim 1, wherein: and the upper surface of the bottom die (2-1) is provided with a marking line (2-6) for placing a ceramsite sound absorption plate (8) in the middle.
9. The production process of the prestressed nonmetal sound barrier unit plate according to claim 1, characterized in that: in the step 2), only a bottom die (2-1) and a side die (2-2) are arranged when the forming die (2) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784932.XA CN113547633B (en) | 2021-07-12 | 2021-07-12 | Production process of prestressed nonmetal sound barrier unit plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784932.XA CN113547633B (en) | 2021-07-12 | 2021-07-12 | Production process of prestressed nonmetal sound barrier unit plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113547633A CN113547633A (en) | 2021-10-26 |
| CN113547633B true CN113547633B (en) | 2022-11-08 |
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