CN109518556B - Prefabricated road plate connected by elbow bolts, manufacturing method thereof and connecting process - Google Patents
Prefabricated road plate connected by elbow bolts, manufacturing method thereof and connecting process Download PDFInfo
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- CN109518556B CN109518556B CN201811562328.7A CN201811562328A CN109518556B CN 109518556 B CN109518556 B CN 109518556B CN 201811562328 A CN201811562328 A CN 201811562328A CN 109518556 B CN109518556 B CN 109518556B
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 254
- 229910052742 iron Inorganic materials 0.000 claims abstract description 127
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 72
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 238000010276 construction Methods 0.000 claims abstract description 38
- 238000005056 compaction Methods 0.000 claims abstract 2
- 239000004033 plastic Substances 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 12
- 241000405070 Percophidae Species 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000006082 mold release agent Substances 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 description 10
- 230000005855 radiation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/08—Reinforced units with steel frames
-
- 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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
- B28B1/0935—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material using only elements wholly or partly immersed in the material, e.g. cores
-
- 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
-
- 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
-
- 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
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
-
- 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
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
- B28B7/002—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
Abstract
The invention provides a prefabricated road plate connected by elbow bolts, a manufacturing method and a connecting process thereof, which comprises a road plate main body, wherein a horseshoe groove is arranged at the top of the road plate main body, an arc-shaped hole is arranged in the road plate main body, and the concrete construction steps are as follows: the reinforcing steel bar meshes are firstly manually bound, and then the reinforcing steel bar meshes are integrally conveyed into a die for construction; the construction of the template, the side template is assembled and then placed on a special steel platform, and the mold release agent is prevented from polluting precast slab steel bars in the mold entering process; the embedded part is installed, a horseshoe groove is required to be embedded in the prefabricated road board before pouring, and the horseshoe groove is fixed on the limiting frame by bolts; respectively pre-burying convex and concave iron plates on four sides of the prefabricated template; the concrete construction is carried out, and the vibration adopts manual vibration and even compaction; and (3) curing the concrete, namely placing the formed prefabricated road board into a steam curing groove by using a lifter for steam curing. The beneficial effects of the invention are as follows: first, the cost is lower. Second, the safety factor is high. Thirdly, the construction efficiency is high. Fourth, construction quality is guaranteed. Fifth, the pollution to the environment is small.
Description
Technical Field
The invention relates to the technical field of prefabricated road plate processes, in particular to a prefabricated road plate connected by elbow bolts, a manufacturing method thereof and a connecting process thereof.
Background
At present, the temporary road mostly adopts the traditional concrete cast-in-situ road surface technology, the construction time of the road surface is longer, and a great deal of manpower is consumed; the passage of materials and other vehicles to the job site during construction can adversely affect the construction period. Moreover, after the temporary road is used, the pavement of the site is broken, a large amount of manpower is required to be input, materials and environment can be caused, and the requirements of green construction and sustainable development are not met. In addition, the conventional operation mode is used for outdoor operation, the working procedures are crossed, and certain potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a prefabricated road plate connected by elbow bolts, a manufacturing method and a connecting process thereof.
The invention adopts the following technical scheme to realize the aim:
the utility model provides a prefabricated road board of elbow bolted connection, road board main part including flat cuboid, road board main part top is equipped with a plurality of horseshoe grooves, be equipped with a plurality of arc holes that are used for elbow connecting bolt to pass in the road board main part, the both ends of arc hole link to each other with the lateral wall and the horseshoe groove of road board main part respectively, two adjacent sides of road board main part all set firmly protruding iron plate, two other adjacent sides of road board main part all are equipped with concave iron plate, protruding iron plate and concave iron plate all are located the arc hole department on the road board main part lateral wall, protruding iron plate and concave iron plate all are equipped with the through-hole with arc hole assorted, be equipped with the lug on the protruding iron plate, be equipped with the lug assorted recess on the concave iron plate, road board main part top still has set firmly a plurality of hanging nails.
Preferably, the convex iron plates and the concave iron plates are arranged at equal intervals on two sides and two ends of the road plate main body, the convex iron plates and the concave iron plates on two sides of the road plate main body correspond in position, and the convex iron plates and the concave iron plates on two ends of the road plate main body correspond in position.
Preferably, the road slab main body comprises a concrete block and two precast slab reinforcing steel bars embedded in the concrete block, the precast slab reinforcing steel bars comprise reinforcing steel bar meshes, the reinforcing steel bar meshes comprise a plurality of transverse ribs and a plurality of longitudinal ribs which are bound together, and the four corners of the reinforcing steel bar meshes are fixedly provided with radiating ribs for reinforcing the reinforcing steel bar meshes.
The manufacturing method of the prefabricated road plate connected by the elbow bolts comprises the following specific steps:
step one, binding reinforcing steel bars
The prefabricated plate steel bar adopts a first manual binding steel bar net sheet, the whole conveying and die-entering construction process, a limiting frame is used for controlling the spacing between transverse bars and between longitudinal bars during steel bar binding, lead wires are required to be firm during binding, a binding lead wire head is required to be turned upside down towards the side surface of the steel bar, and when the steel bar net sheet is bound, the lead wire is bound in a plum blossom-shaped interval one-point jump buckle; controlling the reinforcement protection layer by using plastic cushion blocks, wherein the spacing between the plastic cushion blocks at the bottom of the prefabricated plate reinforcement is 1m;
step two, template construction
The prefabricated templates adopt shaping steel templates which comprise four side dies, the side dies are assembled and then are placed on a special steel platform, the side dies are connected with each other through bolts, and a magnetic box connection process is adopted between the side dies and the steel platform; in construction, all bolts are fastened and connected, and all magnetic boxes are pressed firmly; before assembling the prefabricated templates, ash and sundries on the surfaces of the prefabricated templates are cleaned, and simultaneously, the angle grinder is used for polishing the prefabricated templates to ensure the surfaces of the prefabricated templates to be smooth and rust-free, and then a release agent is uniformly coated, and before the prefabricated plate reinforcing steel bars enter the die, a cleaning table is used for cleaning the prefabricated plate reinforcing steel bars, so that the release agent is prevented from polluting the prefabricated plate reinforcing steel bars in the die entering process;
step three, mounting embedded parts
The prefabricated road slab hanging points adopt a pre-buried hanging nail process, rubber balls matched with hanging nails are used for fixing hanging nails before concrete pouring, and then the rubber balls are fixed on a limiting frame by bolts, so that displacement is prevented during concrete pouring; deducting the rubber ball after the concrete is formed, and then lifting the concrete member to a member storage area by using a duckbill lifting ring;
the prefabricated road board is required to be pre-buried with a horseshoe box before pouring, a horseshoe groove formed after pouring is used as the end part of a connecting hole of an elbow bolt, and the horseshoe box is fixed on a limiting frame by using a bolt; respectively embedding a convex iron plate, a concave iron plate and an elbow pipe on four sides of the prefabricated template, wherein the convex iron plate and the concave iron plate are used for increasing the connection strength between adjacent road plates, and an arc hole is reserved when the elbow pipe is used for pouring;
step four, concrete construction
The slump of concrete is controlled in the range of 130-150mm, manual vibration is adopted for vibration, phi 50 plug-in vibrators are used for manual vibration at the edges of the prefabricated templates, the vibration sequence starts from the position close to the prefabricated templates, the moving distance is not more than 550mm from the outside to the inside, the distance from the vibrator to the templates is not more than 150mm, the vibrator is prevented from colliding with prefabricated templates and prefabricated plate steel bars, and the vibrator is vertically inserted into the concrete during vibration and is quickly inserted and pulled out, and is pumped up and down so as to facilitate uniform vibration;
step five, curing the concrete
And after the concrete pouring is finished, placing the formed prefabricated road plate into a steam curing groove by using a lifter for steam curing.
Preferably, the reinforcing steel bar mesh in the first step adopts the reinforcing steel bar model of HRB400Φ14.
Preferably, the vibrating time in the fourth step is 15-20s.
Preferably, the steam curing process flow in the fifth step is as follows: firstly, standing for 2 hours, wherein the standing temperature is 20-25 ℃, then heating to 50-55 ℃ and keeping for 2 hours, and finally cooling to 20-25 ℃ and keeping for 2 hours.
Preferably, the heating and cooling processes are 2 hours.
Preferably, when the plastic cushion blocks are placed in the first step, three blocks are placed along the length direction of the prefabricated plate steel bars, and two blocks are placed along the width direction.
A connecting process of prefabricated road boards connected by elbow bolts comprises the following specific steps:
step a, splicing a plurality of prefabricated road boards together, wherein the convex blocks on the convex iron plate on one prefabricated road board in two adjacent prefabricated road boards are inserted into the grooves of the concave iron plate on the other prefabricated road board, so that two opposite arc-shaped holes in the two prefabricated road boards are in butt joint to form a U-shaped hole;
b, penetrating the elbow bolt from one end of the U-shaped hole and penetrating out from the other end of the U-shaped hole, wherein the bolt head of the elbow bolt props against the inner wall of the horseshoe groove at one end of the U-shaped hole;
and c, screwing the nut at the tail part of the elbow bolt to enable the nut to prop against the inner wall of the horseshoe groove at the other end of the U-shaped hole, and connecting the two adjacent prefabricated road plates together through the elbow bolt.
Compared with the prior art, the invention has the beneficial effects that:
first, the cost is lower. The investment of site reinforcing steel bars, templates and manpower is reduced, and the production cost is greatly reduced.
Second, the safety factor is high. The prefabricated road boards are manufactured in a unified mode through factory prefabrication, are installed on construction sites in a unified mode, are simple in process and reduce potential safety hazards.
Thirdly, the construction efficiency is high. The transportation of field materials is reduced, and the construction efficiency is improved.
Fourth, construction quality is guaranteed. The concrete pouring quality can be better controlled by factory prefabrication, and the hidden quality trouble caused by concrete cracks is reduced.
Fifth, the pollution to the environment is small. The environmental pollution such as air, noise and the like caused by site construction is reduced, and the environment-friendly development requirement is met.
Drawings
FIG. 1 is a front view of a prefabricated roadway panel bolted with bends;
FIG. 2 is a top view of a prefabricated pavement slab bolted with bends;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
fig. 4 is a schematic structural view of a prefabricated slab reinforcement;
in the figure: 1-a road board body; 2-horseshoe grooves; 3-arc holes; 4-a convex iron plate; 5-concave iron plates; 6-hanging nails; 7-precast slab reinforcing steel bars; 71-transverse ribs; 72, longitudinal ribs; 73-radiating ribs;
the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples:
the utility model provides a prefabricated road board of elbow bolted connection, road board main part 1 including flat cuboid, road board main part 1 top is equipped with a plurality of horseshoe grooves 2, be equipped with a plurality of arc holes 3 that are used for elbow connecting bolt to pass in the road board main part 1, the both ends of arc holes 3 link to each other with the lateral wall and the horseshoe groove 2 of road board main part 1 respectively, two adjacent sides of road board main part 1 all set firmly protruding iron plate 4, two other adjacent sides of road board main part 1 all are equipped with concave iron plate 5, protruding iron plate 4 and concave iron plate 5 all are located the arc hole 3 departments on the road board main part 1 lateral wall, protruding iron plate 4 and concave iron plate 5 all are equipped with the through-hole with arc hole 3 assorted, be equipped with the lug on the protruding iron plate 4, be equipped with on the concave iron plate 5 with protruding lug assorted recess on the protruding iron plate 4, road board main part 1 top still has set firmly a plurality of hanging nails 6.
Preferably, the convex iron plates 4 and the concave iron plates 5 are arranged at equal intervals on both sides and both ends of the road plate main body 1, the convex iron plates 4 and the concave iron plates 5 on both sides of the road plate main body 1 correspond to each other in position, and the convex iron plates 4 and the concave iron plates 5 on both ends of the road plate main body 1 correspond to each other in position.
Preferably, the road slab main body 1 comprises a concrete block and two precast slab reinforcing steel bars 7 embedded in the concrete block, the precast slab reinforcing steel bars 7 comprise reinforcing steel mesh pieces, the reinforcing steel mesh pieces comprise a plurality of transverse ribs 71 and a plurality of longitudinal ribs 72 which are bound together, and radiation ribs 73 for reinforcing the reinforcing steel mesh pieces are fixedly arranged at four corners of the reinforcing steel mesh pieces.
The manufacturing method of the prefabricated road plate connected by the elbow bolts comprises the following specific steps:
step one, binding reinforcing steel bars
The prefabricated plate steel bars 7 are manually bound with steel bar meshes, the whole conveying and die-entering construction process is adopted, spacing frames are used for controlling the spacing between transverse ribs 71 and between longitudinal ribs 72 during steel bar binding, lead wires are required to be firm during binding, a binding lead wire head is required to be turned over towards the side face of the steel bar, and the lead wire threads are required to be in quincuncial type interval one-point jump buckle binding during steel bar mesh binding; the plastic cushion blocks are used for controlling the reinforcement protection layers, and the spacing between the plastic cushion blocks at the bottom of the prefabricated slab reinforcement 7 is 1m;
step two, template construction
The prefabricated templates adopt shaping steel templates which comprise four side dies, the side dies are assembled and then are placed on a special steel platform, the side dies are connected with each other through bolts, and a magnetic box connection process is adopted between the side dies and the steel platform; in construction, all bolts are fastened and connected, and all magnetic boxes are pressed firmly; before assembling the prefabricated templates, ash and sundries on the surfaces of the prefabricated templates are cleaned, and the angle grinder is used for polishing the prefabricated templates to ensure the surfaces of the prefabricated templates to be smooth and rust-free, and then a release agent is uniformly coated, and before the prefabricated plate reinforcing steel bars 7 are put into the mould, cleaning the prefabricated plate reinforcing steel bars 7 by using a cleaning table, and the release agent is prevented from polluting the prefabricated plate reinforcing steel bars 7 in the mould entering process;
step three, mounting embedded parts
The prefabricated road slab hanging points adopt a pre-buried hanging nail 6 process, rubber balls matched with the hanging nails 6 are used for fixing the hanging nails 6 before concrete pouring, and then the rubber balls are fixed on a limiting frame by bolts, so that displacement is prevented during concrete pouring; deducting the rubber ball after the concrete is formed, and then lifting the concrete member to a member storage area by using a duckbill lifting ring;
the prefabricated road board is required to be pre-buried with a horseshoe box before pouring, a horseshoe groove 2 formed after pouring is used as the end part of a connecting hole of an elbow bolt, and the horseshoe box is fixed on a limiting frame by using a bolt; respectively embedding a convex iron plate 4, a concave iron plate 5 and an elbow pipe on four sides of the prefabricated template, wherein the convex iron plate 4 and the concave iron plate 5 are used for increasing the connection strength between adjacent road plates, and an arc-shaped hole 3 is reserved when the elbow pipe is used for pouring;
step four, concrete construction
The slump of the concrete is controlled in the range of 130-150mm, manual vibration is adopted for vibration, phi 50 plug-in vibrators are used for manual vibration at the edges of the prefabricated templates, the vibration sequence starts from the position close to the prefabricated templates, the moving distance is not more than 550mm from the outside to the inside, the distance from the vibrator to the templates is not more than 150mm, the vibrator is prevented from colliding with the prefabricated templates and prefabricated plate steel bars 7, and the vibrator is vertically inserted into the concrete during vibration and is quickly inserted and pulled out, so that uniform vibration is facilitated;
step five, curing the concrete
And after the concrete pouring is finished, placing the formed prefabricated road plate into a steam curing groove by using a lifter for steam curing.
Preferably, the reinforcing steel bar mesh in the first step adopts the reinforcing steel bar model of HRB400Φ14.
Preferably, the vibrating time in the fourth step is 15-20s.
Preferably, the steam curing process flow in the fifth step is as follows: firstly, standing for 2 hours, wherein the standing temperature is 20-25 ℃, then heating to 50-55 ℃ and keeping for 2 hours, and finally cooling to 20-25 ℃ and keeping for 2 hours.
Preferably, the heating and cooling processes are 2 hours.
Preferably, when the plastic cushion blocks are placed in the first step, three blocks are placed along the length direction of the precast slab reinforced bars 7, and two blocks are placed along the width direction.
A connecting process of prefabricated road boards connected by elbow bolts comprises the following specific steps:
step a, splicing a plurality of prefabricated road boards together, wherein the convex blocks on the convex iron plates 4 on one of the two adjacent prefabricated road boards are inserted into the grooves of the concave iron plates 5 on the other prefabricated road board, so that two opposite arc-shaped holes 3 in the two prefabricated road boards are butted and form a U-shaped hole;
step b, penetrating the elbow bolt from one end of the U-shaped hole and penetrating out from the other end, wherein the bolt head of the elbow bolt props against the inner wall of the horseshoe groove 2 at one end of the U-shaped hole;
and c, screwing the nut at the tail part of the elbow bolt to enable the nut to prop against the inner wall of the horseshoe groove 2 at the other end of the U-shaped hole, and connecting two adjacent prefabricated road plates together through the elbow bolt.
Example 1
The utility model provides a prefabricated road board of elbow bolted connection, road board main part 1 including flat cuboid, road board main part 1 top is equipped with a plurality of horseshoe grooves 2, be equipped with a plurality of arc holes 3 that are used for elbow connecting bolt to pass in the road board main part 1, the both ends of arc holes 3 link to each other with the lateral wall and the horseshoe groove 2 of road board main part 1 respectively, two adjacent sides of road board main part 1 all set firmly protruding iron plate 4, two other adjacent sides of road board main part 1 all are equipped with concave iron plate 5, protruding iron plate 4 and concave iron plate 5 all are located the arc hole 3 departments on the road board main part 1 lateral wall, protruding iron plate 4 and concave iron plate 5 all are equipped with the through-hole with arc hole 3 assorted, be equipped with the lug on the protruding iron plate 4, be equipped with on the concave iron plate 5 with protruding lug assorted recess on the protruding iron plate 4, road board main part 1 top still has set firmly a plurality of hanging nails 6.
Preferably, the convex iron plates 4 and the concave iron plates 5 are arranged at equal intervals on both sides and both ends of the road plate main body 1, the convex iron plates 4 and the concave iron plates 5 on both sides of the road plate main body 1 correspond to each other in position, and the convex iron plates 4 and the concave iron plates 5 on both ends of the road plate main body 1 correspond to each other in position.
Preferably, the road slab main body 1 comprises a concrete block and two precast slab reinforcing steel bars 7 embedded in the concrete block, the precast slab reinforcing steel bars 7 comprise reinforcing steel mesh pieces, the reinforcing steel mesh pieces comprise a plurality of transverse ribs 71 and a plurality of longitudinal ribs 72 which are bound together, and radiation ribs 73 for reinforcing the reinforcing steel mesh pieces are fixedly arranged at four corners of the reinforcing steel mesh pieces.
The manufacturing method of the prefabricated road plate connected by the elbow bolts comprises the following specific steps:
step one, binding reinforcing steel bars
The prefabricated plate steel bars 7 are manually bound with steel bar meshes, the whole conveying and die-entering construction process is adopted, spacing frames are used for controlling the spacing between transverse ribs 71 and between longitudinal ribs 72 during steel bar binding, lead wires are required to be firm during binding, a binding lead wire head is required to be turned over towards the side face of the steel bar, and the lead wire threads are required to be in quincuncial type interval one-point jump buckle binding during steel bar mesh binding; the plastic cushion blocks are used for controlling the reinforcement protection layers, and the spacing between the plastic cushion blocks at the bottom of the prefabricated slab reinforcement 7 is 1m;
step two, template construction
The prefabricated templates adopt shaping steel templates which comprise four side dies, the side dies are assembled and then are placed on a special steel platform, the side dies are connected with each other through bolts, and a magnetic box connection process is adopted between the side dies and the steel platform; in construction, all bolts are fastened and connected, and all magnetic boxes are pressed firmly; before assembling the prefabricated templates, ash and sundries on the surfaces of the prefabricated templates are cleaned, and the angle grinder is used for polishing the prefabricated templates to ensure the surfaces of the prefabricated templates to be smooth and rust-free, and then a release agent is uniformly coated, and before the prefabricated plate reinforcing steel bars 7 are put into the mould, cleaning the prefabricated plate reinforcing steel bars 7 by using a cleaning table, and the release agent is prevented from polluting the prefabricated plate reinforcing steel bars 7 in the mould entering process;
step three, mounting embedded parts
The prefabricated road slab hanging points adopt a pre-buried hanging nail 6 process, rubber balls matched with the hanging nails 6 are used for fixing the hanging nails 6 before concrete pouring, and then the rubber balls are fixed on a limiting frame by bolts, so that displacement is prevented during concrete pouring; deducting the rubber ball after the concrete is formed, and then lifting the concrete member to a member storage area by using a duckbill lifting ring;
the prefabricated road board is required to be pre-buried with a horseshoe box before pouring, a horseshoe groove 2 formed after pouring is used as the end part of a connecting hole of an elbow bolt, and the horseshoe box is fixed on a limiting frame by using a bolt; respectively embedding a convex iron plate 4, a concave iron plate 5 and an elbow pipe on four sides of the prefabricated template, wherein the convex iron plate 4 and the concave iron plate 5 are used for increasing the connection strength between adjacent road plates, and an arc-shaped hole 3 is reserved when the elbow pipe is used for pouring;
step four, concrete construction
The slump of the concrete is controlled within 130mm, manual vibration is adopted for vibration, a phi 50 plug-in vibrator is used for manual vibration at the edge of a prefabricated template, the vibration sequence starts from the position close to the prefabricated template, the moving distance is not more than 550mm from the outside to the inside, the distance from the vibrator to the template is not more than 150mm, the vibrator is prevented from colliding with the prefabricated template and the prefabricated slab steel bars 7, and the vibrator is vertically inserted into the concrete during vibration, is quickly inserted and slowly pulled out, and is pumped up and down so as to facilitate uniform vibration;
step five, curing the concrete
And after the concrete pouring is finished, placing the formed prefabricated road plate into a steam curing groove by using a lifter for steam curing.
Preferably, the reinforcing steel bar mesh in the first step adopts the reinforcing steel bar model of HRB400Φ14.
Preferably, in the fourth step, the vibrating time is 15s.
Preferably, the steam curing process flow in the fifth step is as follows: firstly, standing for 2 hours, wherein the standing temperature is 20 ℃, then heating to 50 ℃ for 2 hours, and finally cooling to 20 ℃ for 2 hours.
Preferably, the heating and cooling processes are 2 hours.
Preferably, when the plastic cushion blocks are placed in the first step, three blocks are placed along the length direction of the precast slab reinforced bars 7, and two blocks are placed along the width direction.
A connecting process of prefabricated road boards connected by elbow bolts comprises the following specific steps:
step a, splicing a plurality of prefabricated road boards together, wherein the convex blocks on the convex iron plates 4 on one of the two adjacent prefabricated road boards are inserted into the grooves of the concave iron plates 5 on the other prefabricated road board, so that two opposite arc-shaped holes 3 in the two prefabricated road boards are butted and form a U-shaped hole;
step b, penetrating the elbow bolt from one end of the U-shaped hole and penetrating out from the other end, wherein the bolt head of the elbow bolt props against the inner wall of the horseshoe groove 2 at one end of the U-shaped hole;
and c, screwing the nut at the tail part of the elbow bolt to enable the nut to prop against the inner wall of the horseshoe groove 2 at the other end of the U-shaped hole, and connecting two adjacent prefabricated road plates together through the elbow bolt.
Example two
The utility model provides a prefabricated road board of elbow bolted connection, road board main part 1 including flat cuboid, road board main part 1 top is equipped with a plurality of horseshoe grooves 2, be equipped with a plurality of arc holes 3 that are used for elbow connecting bolt to pass in the road board main part 1, the both ends of arc holes 3 link to each other with the lateral wall and the horseshoe groove 2 of road board main part 1 respectively, two adjacent sides of road board main part 1 all set firmly protruding iron plate 4, two other adjacent sides of road board main part 1 all are equipped with concave iron plate 5, protruding iron plate 4 and concave iron plate 5 all are located the arc hole 3 departments on the road board main part 1 lateral wall, protruding iron plate 4 and concave iron plate 5 all are equipped with the through-hole with arc hole 3 assorted, be equipped with the lug on the protruding iron plate 4, be equipped with on the concave iron plate 5 with protruding lug assorted recess on the protruding iron plate 4, road board main part 1 top still has set firmly a plurality of hanging nails 6.
Preferably, the convex iron plates 4 and the concave iron plates 5 are arranged at equal intervals on both sides and both ends of the road plate main body 1, the convex iron plates 4 and the concave iron plates 5 on both sides of the road plate main body 1 correspond to each other in position, and the convex iron plates 4 and the concave iron plates 5 on both ends of the road plate main body 1 correspond to each other in position.
Preferably, the road slab main body 1 comprises a concrete block and two precast slab reinforcing steel bars 7 embedded in the concrete block, the precast slab reinforcing steel bars 7 comprise reinforcing steel mesh pieces, the reinforcing steel mesh pieces comprise a plurality of transverse ribs 71 and a plurality of longitudinal ribs 72 which are bound together, and radiation ribs 73 for reinforcing the reinforcing steel mesh pieces are fixedly arranged at four corners of the reinforcing steel mesh pieces.
The manufacturing method of the prefabricated road plate connected by the elbow bolts comprises the following specific steps:
step one, binding reinforcing steel bars
The prefabricated plate steel bars 7 are manually bound with steel bar meshes, the whole conveying and die-entering construction process is adopted, spacing frames are used for controlling the spacing between transverse ribs 71 and between longitudinal ribs 72 during steel bar binding, lead wires are required to be firm during binding, a binding lead wire head is required to be turned over towards the side face of the steel bar, and the lead wire threads are required to be in quincuncial type interval one-point jump buckle binding during steel bar mesh binding; the plastic cushion blocks are used for controlling the reinforcement protection layers, and the spacing between the plastic cushion blocks at the bottom of the prefabricated slab reinforcement 7 is 1m;
step two, template construction
The prefabricated templates adopt shaping steel templates which comprise four side dies, the side dies are assembled and then are placed on a special steel platform, the side dies are connected with each other through bolts, and a magnetic box connection process is adopted between the side dies and the steel platform; in construction, all bolts are fastened and connected, and all magnetic boxes are pressed firmly; before assembling the prefabricated templates, ash and sundries on the surfaces of the prefabricated templates are cleaned, and the angle grinder is used for polishing the prefabricated templates to ensure the surfaces of the prefabricated templates to be smooth and rust-free, and then a release agent is uniformly coated, and before the prefabricated plate reinforcing steel bars 7 are put into the mould, cleaning the prefabricated plate reinforcing steel bars 7 by using a cleaning table, and the release agent is prevented from polluting the prefabricated plate reinforcing steel bars 7 in the mould entering process;
step three, mounting embedded parts
The prefabricated road slab hanging points adopt a pre-buried hanging nail 6 process, rubber balls matched with the hanging nails 6 are used for fixing the hanging nails 6 before concrete pouring, and then the rubber balls are fixed on a limiting frame by bolts, so that displacement is prevented during concrete pouring; deducting the rubber ball after the concrete is formed, and then lifting the concrete member to a member storage area by using a duckbill lifting ring;
the prefabricated road board is required to be pre-buried with a horseshoe box before pouring, a horseshoe groove 2 formed after pouring is used as the end part of a connecting hole of an elbow bolt, and the horseshoe box is fixed on a limiting frame by using a bolt; respectively embedding a convex iron plate 4, a concave iron plate 5 and an elbow pipe on four sides of the prefabricated template, wherein the convex iron plate 4 and the concave iron plate 5 are used for increasing the connection strength between adjacent road plates, and an arc-shaped hole 3 is reserved when the elbow pipe is used for pouring;
step four, concrete construction
The slump of concrete is controlled within 150mm, manual vibration is adopted for vibration, a phi 50 plug-in vibrator is used for manual vibration at the edge of a prefabricated template, the vibration sequence starts from the position close to the prefabricated template, the moving distance is not more than 550mm from the outside to the inside, the distance from the vibrator to the template is not more than 150mm, the vibrator is prevented from colliding with the prefabricated template and the prefabricated slab steel bars 7, and the vibrator is vertically inserted into the concrete during vibration, is quickly inserted and slowly pulled out, and is pumped up and down so as to facilitate uniform vibration;
step five, curing the concrete
And after the concrete pouring is finished, placing the formed prefabricated road plate into a steam curing groove by using a lifter for steam curing.
Preferably, the reinforcing steel bar mesh in the first step adopts the reinforcing steel bar model of HRB400Φ14.
Preferably, in the fourth step, the vibrating time is 20s.
Preferably, the steam curing process flow in the fifth step is as follows: firstly, standing for 2 hours, wherein the standing temperature is 25 ℃, then heating to 55 ℃ for 2 hours, and finally cooling to 25 ℃ for 2 hours.
Preferably, the heating and cooling processes are 2 hours.
Preferably, when the plastic cushion blocks are placed in the first step, three blocks are placed along the length direction of the precast slab reinforced bars 7, and two blocks are placed along the width direction.
A connecting process of prefabricated road boards connected by elbow bolts comprises the following specific steps:
step a, splicing a plurality of prefabricated road boards together, wherein the convex blocks on the convex iron plates 4 on one of the two adjacent prefabricated road boards are inserted into the grooves of the concave iron plates 5 on the other prefabricated road board, so that two opposite arc-shaped holes 3 in the two prefabricated road boards are butted and form a U-shaped hole;
step b, penetrating the elbow bolt from one end of the U-shaped hole and penetrating out from the other end, wherein the bolt head of the elbow bolt props against the inner wall of the horseshoe groove 2 at one end of the U-shaped hole;
and c, screwing the nut at the tail part of the elbow bolt to enable the nut to prop against the inner wall of the horseshoe groove 2 at the other end of the U-shaped hole, and connecting two adjacent prefabricated road plates together through the elbow bolt.
Example III
The utility model provides a prefabricated road board of elbow bolted connection, road board main part 1 including flat cuboid, road board main part 1 top is equipped with a plurality of horseshoe grooves 2, be equipped with a plurality of arc holes 3 that are used for elbow connecting bolt to pass in the road board main part 1, the both ends of arc holes 3 link to each other with the lateral wall and the horseshoe groove 2 of road board main part 1 respectively, two adjacent sides of road board main part 1 all set firmly protruding iron plate 4, two other adjacent sides of road board main part 1 all are equipped with concave iron plate 5, protruding iron plate 4 and concave iron plate 5 all are located the arc hole 3 departments on the road board main part 1 lateral wall, protruding iron plate 4 and concave iron plate 5 all are equipped with the through-hole with arc hole 3 assorted, be equipped with the lug on the protruding iron plate 4, be equipped with on the concave iron plate 5 with protruding lug assorted recess on the protruding iron plate 4, road board main part 1 top still has set firmly a plurality of hanging nails 6.
Preferably, the convex iron plates 4 and the concave iron plates 5 are arranged at equal intervals on both sides and both ends of the road plate main body 1, the convex iron plates 4 and the concave iron plates 5 on both sides of the road plate main body 1 correspond to each other in position, and the convex iron plates 4 and the concave iron plates 5 on both ends of the road plate main body 1 correspond to each other in position.
Preferably, the road slab main body 1 comprises a concrete block and two precast slab reinforcing steel bars 7 embedded in the concrete block, the precast slab reinforcing steel bars 7 comprise reinforcing steel mesh pieces, the reinforcing steel mesh pieces comprise a plurality of transverse ribs 71 and a plurality of longitudinal ribs 72 which are bound together, and radiation ribs 73 for reinforcing the reinforcing steel mesh pieces are fixedly arranged at four corners of the reinforcing steel mesh pieces.
The manufacturing method of the prefabricated road plate connected by the elbow bolts comprises the following specific steps:
step one, binding reinforcing steel bars
The prefabricated plate steel bars 7 are manually bound with steel bar meshes, the whole conveying and die-entering construction process is adopted, spacing frames are used for controlling the spacing between transverse ribs 71 and between longitudinal ribs 72 during steel bar binding, lead wires are required to be firm during binding, a binding lead wire head is required to be turned over towards the side face of the steel bar, and the lead wire threads are required to be in quincuncial type interval one-point jump buckle binding during steel bar mesh binding; the plastic cushion blocks are used for controlling the reinforcement protection layers, and the spacing between the plastic cushion blocks at the bottom of the prefabricated slab reinforcement 7 is 1m;
step two, template construction
The prefabricated templates adopt shaping steel templates which comprise four side dies, the side dies are assembled and then are placed on a special steel platform, the side dies are connected with each other through bolts, and a magnetic box connection process is adopted between the side dies and the steel platform; in construction, all bolts are fastened and connected, and all magnetic boxes are pressed firmly; before assembling the prefabricated templates, ash and sundries on the surfaces of the prefabricated templates are cleaned, and the angle grinder is used for polishing the prefabricated templates to ensure the surfaces of the prefabricated templates to be smooth and rust-free, and then a release agent is uniformly coated, and before the prefabricated plate reinforcing steel bars 7 are put into the mould, cleaning the prefabricated plate reinforcing steel bars 7 by using a cleaning table, and the release agent is prevented from polluting the prefabricated plate reinforcing steel bars 7 in the mould entering process;
step three, mounting embedded parts
The prefabricated road slab hanging points adopt a pre-buried hanging nail 6 process, rubber balls matched with the hanging nails 6 are used for fixing the hanging nails 6 before concrete pouring, and then the rubber balls are fixed on a limiting frame by bolts, so that displacement is prevented during concrete pouring; deducting the rubber ball after the concrete is formed, and then lifting the concrete member to a member storage area by using a duckbill lifting ring;
the prefabricated road board is required to be pre-buried with a horseshoe box before pouring, a horseshoe groove 2 formed after pouring is used as the end part of a connecting hole of an elbow bolt, and the horseshoe box is fixed on a limiting frame by using a bolt; respectively embedding a convex iron plate 4, a concave iron plate 5 and an elbow pipe on four sides of the prefabricated template, wherein the convex iron plate 4 and the concave iron plate 5 are used for increasing the connection strength between adjacent road plates, and an arc-shaped hole 3 is reserved when the elbow pipe is used for pouring;
step four, concrete construction
The slump of concrete is controlled within 140mm, manual vibration is adopted for vibration, phi 50 plug-in vibrators are used for manual vibration at the edges of the prefabricated templates, the vibration sequence starts from the position close to the prefabricated templates, the moving distance is not more than 550mm from the outside to the inside, the distance from the vibrator to the templates is not more than 150mm, the vibrator is prevented from colliding with the prefabricated templates and prefabricated slab steel bars 7, and the vibrator is vertically inserted into the concrete during vibration and is quickly inserted and pulled out, and is pumped up and down so as to facilitate uniform vibration;
step five, curing the concrete
And after the concrete pouring is finished, placing the formed prefabricated road plate into a steam curing groove by using a lifter for steam curing.
Preferably, the reinforcing steel bar mesh in the first step adopts the reinforcing steel bar model of HRB400Φ14.
Preferably, in the fourth step, the vibrating time is 16s.
Preferably, the steam curing process flow in the fifth step is as follows: firstly, standing for 2 hours, wherein the standing temperature is 22 ℃, then heating to 53 ℃ for 2 hours, and finally cooling to 21 ℃ for 2 hours.
Preferably, the heating and cooling processes are 2 hours.
Preferably, when the plastic cushion blocks are placed in the first step, three blocks are placed along the length direction of the precast slab reinforced bars 7, and two blocks are placed along the width direction.
A connecting process of prefabricated road boards connected by elbow bolts comprises the following specific steps:
step a, splicing a plurality of prefabricated road boards together, wherein the convex blocks on the convex iron plates 4 on one of the two adjacent prefabricated road boards are inserted into the grooves of the concave iron plates 5 on the other prefabricated road board, so that two opposite arc-shaped holes 3 in the two prefabricated road boards are butted and form a U-shaped hole;
step b, penetrating the elbow bolt from one end of the U-shaped hole and penetrating out from the other end, wherein the bolt head of the elbow bolt props against the inner wall of the horseshoe groove 2 at one end of the U-shaped hole;
and c, screwing the nut at the tail part of the elbow bolt to enable the nut to prop against the inner wall of the horseshoe groove 2 at the other end of the U-shaped hole, and connecting two adjacent prefabricated road plates together through the elbow bolt.
While the invention has been described above with reference to specific embodiments, it will be apparent that the invention is not limited to the above embodiments, but is intended to cover various modifications of the method concepts and technical solutions of the invention, or applications without modifications, in other applications.
Claims (9)
1. The utility model provides a prefabricated road board of elbow bolted connection, road board main part (1) including flat cuboid, a plurality of horseshoe grooves (2) are arranged at road board main part (1) top, be equipped with a plurality of arc hole (3) that are used for elbow connecting bolt to pass in road board main part (1), the both ends of arc hole (3) link to each other with lateral wall and horseshoe groove (2) of road board main part (1) respectively, road board main part (1) adjacent two sides all set firmly protruding iron plate (4), the other two adjacent sides of road board main part (1) all are equipped with concave iron plate (5), protruding iron plate (4) and concave iron plate (5) all are located arc hole (3) department on road board main part (1) lateral wall, protruding iron plate (4) and concave iron plate (5) all are equipped with the through-hole that matches with arc hole (3), be equipped with the lug on protruding iron plate (4), protruding iron plate (5) on the top still set firmly a plurality of hanging nail (6);
when a plurality of prefabricated road plates are spliced, the convex blocks on the convex iron plates (4) on one of the two adjacent prefabricated road plates are inserted into the grooves of the concave iron plates (5) on the other prefabricated road plate, so that two opposite arc-shaped holes (3) in the two prefabricated road plates are butted and form a U-shaped hole; the elbow bolt penetrates from one end of the U-shaped hole and penetrates out from the other end of the U-shaped hole, and the bolt head of the elbow bolt props against the inner wall of the horseshoe groove (2) at one end of the U-shaped hole; the nut is screwed on the tail part of the elbow bolt to prop against the inner wall of the horseshoe groove (2) at the other end of the U-shaped hole, and the two adjacent prefabricated road plates can be connected together through the elbow bolt.
2. The prefabricated road board connected by elbow bolts according to claim 1, characterized in that the convex iron plates (4) and the concave iron plates (5) are arranged at equal intervals on two sides and two ends of the road board main body (1), the convex iron plates (4) and the concave iron plates (5) on two sides of the road board main body (1) are corresponding in position, and the convex iron plates (4) and the concave iron plates (5) on two ends of the road board main body (1) are corresponding in position.
3. The prefabricated road slab connected by elbow bolts according to claim 2, characterized in that the road slab main body (1) comprises a concrete block and two prefabricated slab reinforcing steel bars (7) embedded in the concrete block, the prefabricated slab reinforcing steel bars (7) comprise a reinforcing steel mesh, the reinforcing steel mesh comprises a plurality of transverse ribs (71) and a plurality of longitudinal ribs (72) which are bound together, and the four corners of the reinforcing steel mesh are fixedly provided with radiating ribs (73) for reinforcing the reinforcing steel mesh.
4. A method of manufacturing an elbow bolted prefabricated road panel according to claim 3, comprising the specific steps of:
step one, binding reinforcing steel bars;
the prefabricated plate steel bar (7) adopts a first manual binding steel bar net sheet, the whole is carried into a mould for construction, spacing frames are used for controlling the spacing between transverse bars (71) and the spacing between longitudinal bars (72) during steel bar binding, lead wires are required to be firm during binding, a binding lead wire head is required to be turned over towards the side surface of the steel bar, and the lead wire threads are required to be in plum blossom-shaped interval one-point jump binding during binding the steel bar net sheet; the plastic cushion blocks are used for controlling the reinforcement protection layers, and the spacing between the plastic cushion blocks at the bottom of the prefabricated plate reinforcement (7) is 1m;
step two, template construction;
the prefabricated templates adopt shaping steel templates which comprise four side dies, the side dies are assembled and then are placed on a special steel platform, the side dies are connected with each other through bolts, and a magnetic box connection process is adopted between the side dies and the steel platform; in construction, all bolts are fastened and connected, and all magnetic boxes are pressed firmly; before assembling the prefabricated templates, ash and sundries on the surfaces of the prefabricated templates are cleaned, and the angle grinder is used for polishing the prefabricated templates to ensure the surfaces of the prefabricated templates to be smooth and rust-free, and then a release agent is uniformly coated, and before the prefabricated plate steel bars (7) enter the die, cleaning the prefabricated plate steel bars (7) by using a cleaning table, and the release agent is prevented from polluting the prefabricated plate steel bars (7) in the process of entering the die;
step three, mounting an embedded part;
the prefabricated road slab hanging points adopt a pre-buried hanging nail (6) process, rubber balls matched with the hanging nails (6) are used for fixing the hanging nails (6) before concrete pouring, and then the rubber balls are fixed on a limiting frame by bolts to prevent displacement during concrete pouring; deducting the rubber ball after the concrete is formed, and then lifting the concrete member to a member storage area by using a duckbill lifting ring;
the prefabricated road board is required to be pre-buried with a horseshoe box before pouring, a horseshoe groove (2) formed after pouring is used as the end part of a connecting hole of an elbow bolt, and the horseshoe box is fixed on a limiting frame by using a bolt; respectively embedding a convex iron plate (4), a concave iron plate (5) and an elbow pipe on four sides of the prefabricated template, wherein the convex iron plate (4) and the concave iron plate (5) are used for increasing the connection strength between adjacent road plates, and an arc-shaped hole (3) is reserved when the elbow pipe is used for pouring;
fourthly, constructing concrete;
the slump of concrete is controlled in the range of 130-150mm, manual vibration is adopted for vibration, phi 50 plug-in vibrators are used for manual vibration at the edges of the prefabricated templates, the vibration sequence starts from the position close to the prefabricated templates, the moving distance is not more than 550mm from outside to inside, the distance from the vibrator to the templates is not more than 150mm, the vibrator is prevented from colliding with the prefabricated templates and prefabricated plate steel bars (7), and is vertically inserted into the concrete during vibration, and is quickly inserted and pulled out, so that uniform compaction is facilitated;
step five, curing the concrete;
and after the concrete pouring is finished, placing the formed prefabricated road plate into a steam curing groove by using a lifter for steam curing.
5. The method of manufacturing an elbow bolted prefabricated pavement slab according to claim 4, wherein the reinforcement mesh in step one is of the type HRB400 Φ14.
6. The method of manufacturing an elbow bolted prefabricated road panel according to claim 5, wherein the vibrating time in step four is 15-20s.
7. The method for manufacturing the prefabricated road slab connected by the elbow bolt according to claim 6, wherein the steam curing process in the fifth step is as follows: firstly, standing for 2 hours, wherein the standing temperature is 20-25 ℃, then heating to 50-55 ℃ and keeping for 2 hours, and finally cooling to 20-25 ℃ and keeping for 2 hours.
8. The method of manufacturing an elbow bolted prefabricated road panel according to claim 7, wherein the heating process and the cooling process are each 2 hours.
9. The method for manufacturing a prefabricated pavement slab for elbow bolting according to claim 8, wherein three blocks are placed along the length direction of the prefabricated slab reinforcing steel bar (7) and two blocks are placed along the width direction when the plastic cushion block is placed in the first step.
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| CN110405905A (en) * | 2019-07-10 | 2019-11-05 | 中交一航局第一工程有限公司 | It is a kind of to hang nail construction method for the pre-buried of precast slab |
| CN111002443A (en) * | 2019-12-24 | 2020-04-14 | 中建三局集团有限公司 | Duct piece elbow bolt hole mold and implementation method thereof |
| CN114193600B (en) * | 2022-01-24 | 2023-09-12 | 上海三一重机股份有限公司 | Counterweight integrated forming manufacturing method and working machine |
| CN114477875B (en) * | 2022-02-28 | 2023-05-09 | 铭际建筑科技(泰兴)有限公司 | High-strength concrete and prefabricated road board prepared from same |
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| KR101097995B1 (en) * | 2011-08-04 | 2011-12-23 | 콘비젼스 주식회사 | Concrete modular panels for rigid paving and fast construction method |
| KR101389704B1 (en) * | 2013-07-25 | 2014-04-28 | 김근택 | Precast concrete panel for pavement and its construction method |
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