CN114411486A - Post-tensioning prestress assembly type intelligent traffic sign pavement structure and installation method thereof - Google Patents

Post-tensioning prestress assembly type intelligent traffic sign pavement structure and installation method thereof Download PDF

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Publication number
CN114411486A
CN114411486A CN202210162433.1A CN202210162433A CN114411486A CN 114411486 A CN114411486 A CN 114411486A CN 202210162433 A CN202210162433 A CN 202210162433A CN 114411486 A CN114411486 A CN 114411486A
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China
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precast concrete
pavement
groove
concrete block
strip
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Inventor
徐勋倩
顾钰雯
施卫东
陈达楷
高秀美
季海萍
周井玲
李玉
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Nantong University
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Nantong University
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    • 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
    • E01C17/00—Pavement lights, i.e. translucent constructions forming part of the surface
    • 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
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
    • E01C11/106—Joints with only prefabricated packing; Packings therefor
    • 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
    • E01C11/16—Reinforcements
    • 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
    • E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224—Surface drainage of streets
    • E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention relates to the technical field of traffic infrastructure, in particular to a post-tensioning prestress assembly type intelligent traffic sign pavement structure and an installation method thereof, wherein the installation method comprises the following steps: firstly, manufacturing a single precast concrete block member; secondly, excavating and cutting a road surface strip-shaped foundation trench; step three, tensioning the prestressed reinforcement; step four, placing the prefabricated component of the luminous floor tile into the strip-shaped base groove; step five, installing a luminous brick component; step six, gap filling; step seven: and a 220v power supply and a signal lamp control box are connected and used for debugging light. According to the invention, the prefabricated intelligent traffic sign pavement structure adopts the construction process of factory prefabrication and field assembly, so that the workload of field pouring can be obviously reduced, and the structure has reliable quality, high mechanization degree and high construction efficiency. The prestressed reinforcement is used for connecting the prefabricated parts and is transited by using the rubber joint filling material, so that the capacity of transferring load by joints can be improved, and the durability and the driving comfort of a pavement structure are improved.

Description

Post-tensioning prestress assembly type intelligent traffic sign pavement structure and installation method thereof
Technical Field
The invention relates to the technical field of traffic infrastructure, in particular to a post-tensioning prestress assembly type intelligent traffic sign pavement structure and an installation method thereof.
Background
With the continuous development of social economy and scientific technology, more and more motor vehicles and non-motor vehicles run on urban roads, and higher requirements are put forward on the construction of traffic infrastructure. In all parts of the country, under the condition that a part of zebra crossings are worn, drivers are difficult to acquire road condition information in front in time, so that the drivers are not in time to brake and tragedy is caused. Meanwhile, due to the fact that lighting facilities in some regions are incomplete, driving environment at night is poor, and driving safety of the intersection of people and vehicles near the zebra crossing is difficult to guarantee. According to statistics, the occurrence rate of driving accidents at night is three times that of driving accidents at daytime.
In order to solve the above traffic safety problems, the conventional method is to add auxiliary facilities at the pedestrian crossing to improve the identification of traffic markings, such as longitudinally raised road signs or intelligent traffic signs-road surface luminous floor tiles (patent numbers: 201910053729.8 and 201910355181.2). The luminous floor tile is composed of a tile body and a base, wherein the main material of the tile body is a high polymer composite material, and the base is a nodular cast iron box which has hardness and toughness. It can form visual impact to driver and pedestrian through the color suggestion, lets driver and pedestrian confirm traffic signal lamp and the current condition in advance, in time avoids the risk to reduce the emergence of traffic accident.
However, from the installation and use of the prior road surface lighting structure, the lighting floor tiles also have a series of problems. Firstly, the light-emitting floor tiles are mainly installed in a cast-in-place mode, and in the construction and installation process, a large amount of cement is poured, so that the traffic sealing time is long, and the traffic jam of a city is aggravated. The problems that the construction quality is difficult to control and the like exist in the processes of cast-in-place and paving, and the standardized construction and the fine management of the pavement structure are not facilitated. Secondly, a part of the luminous pavement adopts a prefabricated assembly type structure form, but because the connection between prefabricated structures is not tight enough, the pavement drainage is not smooth, the problems of water seepage and the like are easily generated between the seams of the luminous pavement structure, the road bed is soaked, and the whole service life of the road is influenced, so corresponding measures are needed to be taken to improve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a post-tensioning pre-stressed assembled intelligent traffic sign pavement structure and an installation method thereof, which can solve the problems that the traditional pavement luminous structure has long traffic closure time in cast-in-place construction, insufficiently tight connection among prefabricated assembled structures, easy water seepage among seams and the like in the installation construction and use processes.
In order to achieve the purpose, the invention adopts the following technical scheme: .
A post-tensioning prestress assembly type intelligent traffic sign pavement structure installation method comprises the following steps:
step one, manufacturing a single precast concrete block member: prefabricating a concrete block in a prefabricated part processing plant, wherein the length L is 1-1.2 m, the width D is 400-450 mm, and the height H is 250-350 mm; the dimension of the known luminous brick is LLuminescence×DLuminescence×hLuminescence450mm × 250mm × 55 mm; reserving the length L of the groove of the luminous brick block on the precast concrete block1＝LLuminescence15 to 20mm in width d1＝dLuminescence15 to 20mm in height h2＝hLuminescence55 mm; the reserved circular drainage groove is located at the position of 1/3-1/2 height above the bottom of the concrete block, and the diameter d of the drainage grooveDraining water1/3H; the upper part of the reserved circular drainage groove is provided with a groove-shaped steel member for installing and fixing a PVC wiring pipeline,the water drainage groove is tangent to the PVC routing pipeline, the lower bottom surface of the circular drainage groove is provided with 1-3% of slope, and the slope is towards the direction of the water collecting well, so that the water can be timely drained in rainy days or in the case of accumulated water; opening size d of reserved prestressed tendon pore channelPore canal＝dReinforcing bar+ (1-2) mm; the cutting strip-shaped grooves are respectively positioned at the middle positions of the top and the bottom of the precast concrete block and have the length L21/10L, width d2＝dPore canal15 to 20mm, depth h2H (1/5-1/6); after the single precast concrete block member is manufactured, transporting the precast concrete block member to a specified place for installation and construction;
step two, excavating and cutting a road surface strip-shaped foundation trench: arranging professional measuring personnel to measure, position and pay off at the milled pavement, and determining the width and the depth of the strip-shaped foundation trench of the excavated pavement; the width of the strip foundation trench for excavating the pavement is 10-20 mm wider than that of the precast concrete member, and the depth of the strip foundation trench for excavating the pavement is 10-20 mm deeper than that of the precast concrete member; after milling and planing the pavement, carrying out rolling and tamping on the pavement, and paving fiber cement mortar as a leveling layer, wherein the paving thickness is 10-20 mm;
step three, tensioning the prestressed reinforcement: firstly, placing a rubber water stop between adjacent precast concrete blocks, wherein the thickness of the rubber water stop is 8-12 mm; then, a corrugated pipe is inserted into a pre-stressed reinforcement hole channel reserved in the precast concrete component, a prestressed reinforcement is implanted, two ends of the prestressed reinforcement are anchored on a precast concrete block by using an anchoring bolt, then the prestressed reinforcement is tensioned by using a jack, and the pre-tensioning force is transmitted to the precast concrete block by depending on an anchorage device at the end part, so that the precast concrete block generates pre-stressing force; finally, the jack is dismantled, cement slurry is poured into the hole channel to carry out hole channel grouting treatment, exposed reinforcing steel bars are cut off, the cement slurry at the end part of the prefabricated component is cleaned, and concrete is used for sealing and protecting the anchor, so that the prestressed reinforcing steel bars and the prefabricated concrete component form a whole;
step four, placing the prefabricated member of the luminous floor tile into the strip-shaped base groove: vertically placing the prefabricated part which is tensioned by the post-tensioning method into the excavated pavement strip-shaped foundation groove by using a crane according to a positioning line;
step five, installing a luminous brick component: firstly, a PVC (polyvinyl chloride) wiring pipeline of phi 40 penetrates into a groove-shaped steel component, a cable is penetrated, a light-emitting brick is placed into a reserved light-emitting brick groove, and the light-emitting brick is connected with a precast concrete block by adopting a pavement rubber joint strip, so that good impermeability and structural integrity are ensured;
step six, gap filling: after the prefabricated luminous floor tile is installed, cement paste with the water-cement ratio of more than 1:2 is poured into a gap between the pavement and the prefabricated concrete member and the embedded steel bar strip-shaped groove to ensure that the cement paste is flush with the original pavement, and the cement paste is cured and molded;
step seven: and a 220v power supply and a signal lamp control box are connected and used for debugging light.
By adopting the technical scheme: the prefabricated intelligent traffic sign pavement structure is prefabricated in a factory and assembled on site, the workload of cast-in-place can be remarkably reduced, and the structure is reliable in quality, high in mechanization degree and high in construction efficiency. The prestressed reinforcement is used for connecting the prefabricated parts and is transited by the rubber joint filling material, so that the load transfer capability of the joint can be improved, and the durability and the driving comfort of the pavement structure are improved; the crack of the pavement caused by expansion with heat and contraction with cold can be prevented, and the crack resistance and the waterproof performance of the pavement are enhanced.
The invention also provides a post-tensioning pre-stress assembly type intelligent traffic sign pavement structure which comprises a plurality of precast concrete blocks connected in sequence, wherein each precast concrete block is provided with a luminous brick groove for mounting a luminous brick, a round drainage groove penetrating through the precast concrete block from front to back is formed in the precast concrete block, the upper top surface of the round drainage groove is provided with a groove-shaped steel member for mounting and fixing a PVC wiring pipeline, the PVC wiring pipeline is in tangent connection with the groove-shaped steel member, and a cable is inserted in the PVC wiring pipeline; 2 bar grooves are formed in the middle of the top and the bottom of the precast concrete block respectively, a prestressed tendon channel is arranged in each bar groove, and the prestressed tendon channels obliquely extend to the front end portion or the rear end portion of the precast concrete block.
Preferably, a corrugated pipe penetrates into the prestressed reinforcement hole, prestressed reinforcements are arranged in the corrugated pipe, two end parts of the prestressed reinforcements are fixedly connected with the precast concrete blocks through anchor bolts, and the prestressed reinforcements are used for connecting the precast concrete blocks on the front side and the rear side.
Preferably, a road rubber joint strip is arranged between the light-emitting brick and the light-emitting brick groove.
Preferably, a rubber water stop is arranged between two adjacent precast concrete blocks.
Preferably, the strip-shaped grooves are distributed on the left side and the right side of the grooves of the light-emitting bricks.
By adopting the technical scheme: the prefabricated concrete block member is tightly tied by utilizing prestress, so that sufficient compressive stress storage is provided for the prefabricated member, and the stress deformation is scientific and reasonable; make the assembly body have very strong wholeness, can effectively realize the stress transmission between vertical shear force load transmission and the adjacent prefabricated section.
The invention has the following beneficial effects:
1. according to the invention, the prefabricated intelligent traffic sign pavement structure adopts the construction process of factory prefabrication and field assembly, so that the workload of field pouring can be obviously reduced, and the structure has reliable quality, high mechanization degree and high construction efficiency. Compared with the construction by a cast-in-place method, the construction method can reduce noise, prevent dust, reduce environmental pollution and reduce the influence on urban traffic.
2. The invention utilizes the compact drawknot of the prestress to the precast concrete block member, provides sufficient compressive stress reserve for the precast member, and has scientific and reasonable stress deformation; make the assembly body have very strong wholeness, can effectively realize the stress transmission between vertical shear force load transmission and the adjacent prefabricated section.
3. According to the invention, the rubber waterstops are filled between the precast concrete blocks as connecting materials, so that the load transfer capability of the joints can be improved, and the durability and the driving comfort of a pavement structure are improved; the crack of the pavement caused by expansion with heat and contraction with cold can be prevented, and the crack resistance and the waterproof performance of the pavement are enhanced.
4. The invention adopts the prefabricated technology, so that the durability and the appearance quality of the structure are greatly improved. Original pavement surface quality control points of the structure are concentrated to linear control points such as structural joints, the structural surface flatness can be accurately in millimeter level, and standardized construction and fine management of the pavement structure are realized; the construction period is improved by 70%, the accident occurrence probability is reduced by 50%, and the cost is saved by 30%.
5. The invention mutually independent the luminous brick and the pipeline, which is convenient for maintenance. The reserved circular drainage groove has good stress performance, accumulated water can be drained into the water collecting well by utilizing the self slope, and the drainage performance is good.
Drawings
FIG. 1 is an overall schematic view of the present invention after installation;
FIG. 2 is a schematic view showing the construction of a single precast concrete block according to the present invention;
FIG. 3 is a cross-sectional view of a single precast concrete block standard block of the present invention (with two tendon ducts);
FIG. 4 is a cross-sectional view of a single precast concrete block edge block (provided with a pre-formed reinforcement hole) according to the present invention;
FIG. 5 is a schematic structural view of the light-emitting brick and the road rubber joint strip of the present invention;
FIG. 6 is a schematic structural view of two adjacent precast concrete blocks connected by prestressed reinforcement according to the present invention;
FIG. 7 is a side cross-sectional view of the assembled intelligent traffic sign pavement structure of the present invention.
In the figure: the concrete-filled joint strip comprises 1 precast concrete block, 2 luminous bricks, 3 pavement rubber joint strips, 4 rubber water stops, 5 anchor bolts, 6PVC (polyvinyl chloride) routing pipelines, 7 cables, 8 groove-shaped steel members, 9 strip-shaped grooves, 10 prestressed tendon pore channels, 11 circular drainage grooves, 12 luminous brick grooves and 13 prestressed reinforcements.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Referring to fig. 1 to 7, a method for installing a post-tensioned pre-stressed fabricated intelligent traffic sign pavement structure, the method comprising the steps of:
step one, manufacturing a single precast concrete block member: as shown in fig. 2 and 5, the length L of the precast concrete block is 1-1.2 m, the width D of the precast concrete block is 400-450 mm, and the height H of the precast concrete block is 250-350 mm; the dimension of the known luminous brick is LLuminescence×DLuminescence×hLuminescence450mm × 250mm × 55 mm; reserving the length L of the groove of the luminous brick block on the precast concrete block1＝LLuminescence15 to 20mm in width d1＝dLuminescence15 to 20mm in height h2＝hLuminescence55 mm; the reserved circular drainage groove is located at the position of 1/3-1/2 height above the bottom of the concrete block, and the diameter d of the drainage grooveDraining water1/3H; the upper part of the reserved circular drainage groove is provided with a groove-shaped steel member which is used for installing and fixing the PVC routing pipeline and is tangent to the PVC routing pipeline, the lower bottom surface of the circular drainage groove is provided with a 1-3% slope which is towards the direction of the water collecting well, and the water can be discharged in time in rainy days or in the case of accumulated water; opening size d of reserved prestressed tendon pore channelPore canal＝dReinforcing bar+ (1-2) mm; the clear distance from the reserved prestressed tendon pore channel 10 to the edge of the precast concrete block member is not less than 30mm and not less than 50% of the diameter of the pore channel, and the relative regulation of post-tensioning prestressed tendon and reserved pore channel arrangement in the concrete structure design specification is met; the cutting strip-shaped grooves are respectively positioned at the middle positions of the top and the bottom of the precast concrete block and have the length L21/10L, width d2＝dPore canal15 to 20mm, depth h2H (1/5-1/6); FIG. 3 shows a single precast concrete block standard block member provided with two tendon ducts connected to the precast members at both sides, respectively. FIG. 4 shows a single precast concrete block edge block member, each of which is provided with a pre-formed steel bar hole passage and a single-sided precast structureConnecting the components; and after the single precast concrete block member is manufactured, transporting the precast concrete block member to a specified place for installation and construction.
Step two, excavating and cutting a road surface strip-shaped foundation trench: arranging professional measuring personnel to measure, position and pay off at the milled pavement, and determining the width and the depth of the strip-shaped foundation trench of the excavated pavement; the width of the strip foundation trench for excavating the pavement is 10-20 mm wider than that of the precast concrete member, and the depth of the strip foundation trench for excavating the pavement is 10-20 mm deeper than that of the precast concrete member; and after milling and planing the road surface, rolling and tamping the soil foundation, and paving fiber cement mortar as a leveling layer, wherein the paving thickness is 10-20 mm.
Step three, tensioning the prestressed reinforcement: as shown in the attached figure 6, firstly, a rubber water stop is placed between adjacent precast concrete blocks, and the thickness of the rubber water stop is 8-12 mm; then, a corrugated pipe is inserted into a pre-stressed reinforcement hole channel reserved in the precast concrete component, a prestressed reinforcement is implanted, two ends of the prestressed reinforcement are anchored on a precast concrete block by using an anchoring bolt, then the prestressed reinforcement is tensioned by using a jack, and the pre-tensioning force is transmitted to the precast concrete block by depending on an anchorage device at the end part, so that the precast concrete block generates pre-stressing force; and finally, removing the jack, pouring cement slurry into the pore channel to carry out pore channel grouting treatment, cutting off the exposed reinforcing steel bars, cleaning the cement slurry at the end part of the prefabricated component, and using concrete to carry out anchor sealing protection so as to enable the prestressed reinforcing steel bars and the prefabricated concrete component to form a whole.
Step four, placing the prefabricated member of the luminous floor tile into the strip-shaped base groove: vertically placing the prefabricated part which is tensioned by the post-tensioning method into the excavated pavement strip-shaped foundation groove by using a crane according to a positioning line;
step five, installing a luminous brick component: as shown in figure 7, firstly, a PVC (polyvinyl chloride) routing pipeline of phi 40 penetrates through a groove-shaped steel member, a cable is penetrated, a light-emitting brick is placed in a reserved light-emitting brick groove, and the light-emitting brick is connected with a precast concrete block by adopting a road rubber joint strip, so that good impermeability and structural integrity are ensured;
step six, gap filling: after the prefabricated luminous floor tile is installed, cement paste with the water-cement ratio of more than 1:2 is poured into a gap between the pavement and the prefabricated concrete member and the embedded steel bar strip-shaped groove to ensure that the cement paste is flush with the original pavement, and the cement paste is cured and molded;
step seven: and a 220v power supply and a signal lamp control box are connected and used for debugging light.
In this embodiment, with the construction technology of prefabricated assembled wisdom traffic sign road surface structure adoption mill prefabrication, site Assembly, can show the work load that reduces the cast in situ, structure quality is reliable, degree of mechanization is high, the efficiency of construction is high. Compared with the construction by a cast-in-place method, the construction method can reduce noise, prevent dust, reduce environmental pollution and reduce the influence on urban traffic. Due to the adoption of the prefabricated technology, the durability and the appearance quality of the structure are greatly improved. The original pavement surface quality control points of the structure are concentrated to linear control points such as structural joints, the structural surface flatness can be accurately measured to a millimeter level, and the standardized construction and the fine management of the pavement structure are realized. The construction period is improved by 70%, the accident occurrence probability is reduced by 50%, and the cost is saved by 30%.
A post-tensioning method prestress assembly type intelligent traffic sign road surface structure comprises a plurality of precast concrete blocks 1 which are sequentially connected, wherein each precast concrete block 1 is provided with a light-emitting brick groove 12 for mounting a light-emitting brick 2, a round water drainage groove 11 which penetrates through the precast concrete block 1 from front to back is formed in the precast concrete block, and the round water drainage groove 11 is arranged below the light-emitting brick groove 12; the upper top surface of the circular drainage groove 11 is provided with a groove-shaped steel member 8 for installing and fixing a PVC wiring pipeline 6, the PVC wiring pipeline 6 is in tangent connection with the groove-shaped steel member 8, and a cable 7 is inserted in the PVC wiring pipeline 6; 2 bar grooves 9 are respectively formed in the middle positions of the top and the bottom of the precast concrete block 1, a prestressed tendon channel 10 is arranged in each bar groove 9, and the prestressed tendon channels 10 obliquely extend to the front end portion or the rear end portion of the precast concrete block 1.
The strip-shaped grooves 9 are distributed on the left side and the right side of the luminous brick groove 12; here, two strip-shaped grooves 9 are formed in the top of the precast concrete block 1, two strip-shaped grooves 9 are also formed in the bottom of the precast concrete block 1, and the two strip-shaped grooves 9 are correspondingly formed in the vertical direction and the left direction and the right direction. In actual application, the design can be carried out according to specific conditions so as to meet the actual use requirements.
Specifically, a corrugated pipe penetrates into the prestressed reinforcement hole 10, prestressed reinforcements 13 are arranged in the corrugated pipe, two end portions of each prestressed reinforcement 13 are fixedly connected with the precast concrete blocks 1 through anchor bolts 5, and the prestressed reinforcements 10 are used for connecting the precast concrete blocks 1 on the front side and the rear side.
In the embodiment, the prestress assembly type intelligent traffic sign pavement structure utilizes the prestress of the prestressed reinforcement 13 to tightly tie the two adjacent precast concrete blocks 1, so that sufficient compressive stress storage is provided for the precast components, and the stress deformation is scientific and reasonable; make the assembly body have very strong wholeness, can effectively realize the stress transmission between vertical shear force load transmission and the adjacent prefabricated section. Meanwhile, the luminous bricks and the pipelines are mutually independent, so that the maintenance is convenient; the reserved circular drainage groove has good stress performance, accumulated water can be drained into the water collecting well by utilizing the self slope, and the drainage performance is good.
Specifically, a road rubber joint strip 3 is arranged between the luminous brick 2 and the luminous brick groove 12.
In this embodiment, adopt road surface rubber joint strip 3 can increase the toughness between the prefabricated component, prevent that the road surface from because of expend with heat and contract with cold fracture, reduce driving safety hidden danger risk, promoted the durability and the driving comfort of structure.
Specifically, a rubber water stop 4 is arranged between two adjacent precast concrete blocks 1.
In the embodiment, the rubber water stop belts are filled between the two adjacent precast concrete blocks to serve as the connecting materials, so that the load transfer capacity of the joint can be improved, and the crack resistance and the waterproof performance of the joint can be enhanced.
The description and practice of the disclosure herein will be readily apparent to those skilled in the art from consideration of the specification and understanding, and may be modified and modified without departing from the principles of the disclosure. Therefore, modifications or improvements made without departing from the spirit of the invention should also be considered as the protection scope of the invention.

Claims (6)

1. A post-tensioning prestress assembly type intelligent traffic sign pavement structure installation method is characterized by comprising the following steps:
step one, manufacturing a single precast concrete block member: prefabricating a concrete block in a prefabricated part processing plant, wherein the length L is 1-1.2 m, the width D is 400-450 mm, and the height H is 250-350 mm; the dimension of the known luminous brick is LLuminescence×DLuminescence×hLuminescence450mm × 250mm × 55 mm; reserving the length L of the groove of the luminous brick block on the precast concrete block1＝LLuminescence15 to 20mm in width d1＝dLuminescence15 to 20mm in height h2＝hLuminescence55 mm; the reserved circular drainage groove is located at the position of 1/3-1/2 height above the bottom of the concrete block, and the diameter d of the drainage grooveDraining water1/3H; the upper part of the reserved circular drainage groove is provided with a groove-shaped steel member which is used for installing and fixing the PVC routing pipeline and is tangent to the PVC routing pipeline, the lower bottom surface of the circular drainage groove is provided with a 1-3% slope which is towards the direction of the water collecting well, and the water can be discharged in time in rainy days or in the case of accumulated water; opening size d of reserved prestressed tendon pore channelPore canal＝dReinforcing bar+ (1-2) mm; the cutting strip-shaped grooves are respectively positioned at the middle positions of the top and the bottom of the precast concrete block and have the length L21/10L, width d2＝dPore canal15 to 20mm, depth h2H (1/5-1/6); after the single precast concrete block member is manufactured, transporting the precast concrete block member to a specified place for installation and construction;
step two, excavating and cutting a road surface strip-shaped foundation trench: arranging professional measuring personnel to measure, position and pay off at the milled pavement, and determining the width and the depth of the strip-shaped foundation trench of the excavated pavement; the width of the strip foundation trench for excavating the pavement is 10-20 mm wider than that of the precast concrete member, and the depth of the strip foundation trench for excavating the pavement is 10-20 mm deeper than that of the precast concrete member; after milling and planing the pavement, carrying out rolling and tamping on the pavement, and paving fiber cement mortar as a leveling layer, wherein the paving thickness is 10-20 mm;
step three, tensioning the prestressed reinforcement: firstly, placing a rubber water stop between adjacent precast concrete blocks, wherein the thickness of the rubber water stop is 8-12 mm; then, a corrugated pipe is inserted into a pre-stressed reinforcement hole channel reserved in the precast concrete component, a prestressed reinforcement is implanted, two ends of the prestressed reinforcement are anchored on a precast concrete block by using an anchoring bolt, then the prestressed reinforcement is tensioned by using a jack, and the pre-tensioning force is transmitted to the precast concrete block by depending on an anchorage device at the end part, so that the precast concrete block generates pre-stressing force; finally, the jack is dismantled, cement slurry is poured into the hole channel to carry out hole channel grouting treatment, exposed reinforcing steel bars are cut off, the cement slurry at the end part of the prefabricated component is cleaned, and concrete is used for sealing and protecting the anchor, so that the prestressed reinforcing steel bars and the prefabricated concrete component form a whole;
step four, placing the prefabricated member of the luminous floor tile into the strip-shaped base groove: vertically placing the prefabricated part which is tensioned by the post-tensioning method into the excavated pavement strip-shaped foundation groove by using a crane according to a positioning line;
step five, installing a luminous brick component: firstly, a PVC (polyvinyl chloride) wiring pipeline of phi 40 penetrates into a groove-shaped steel component, a cable is penetrated, a light-emitting brick is placed into a reserved light-emitting brick groove, and the light-emitting brick is connected with a precast concrete block by adopting a pavement rubber joint strip, so that good impermeability and structural integrity are ensured;
step six, gap filling: after the prefabricated luminous floor tile is installed, cement paste with the water-cement ratio of more than 1:2 is poured into a gap between the pavement and the prefabricated concrete member and the embedded steel bar strip-shaped groove to ensure that the cement paste is flush with the original pavement, and the cement paste is cured and molded;
step seven: and a 220v power supply and a signal lamp control box are connected and used for debugging light.
2. A post-tensioning pre-stress assembly type intelligent traffic sign road surface structure comprises a plurality of precast concrete blocks (1) which are connected in sequence, and is characterized in that each precast concrete block (1) is provided with a luminous brick groove (12) for mounting a luminous brick (2), the precast concrete block (1) is internally provided with a circular drainage groove (11) which penetrates through from front to back, the top surface of the circular drainage groove (11) is provided with a groove-shaped steel component (8) for mounting and fixing a PVC wiring pipeline (6), the PVC wiring pipeline (6) is in tangent connection with the groove-shaped steel component (8), and a cable (7) is inserted in the PVC wiring pipeline (6); 2 bar grooves (9) have been seted up respectively to the top and the bottom intermediate position of precast concrete piece (1), every all be equipped with prestressing tendons pore (10) in bar groove (9), prestressing tendons pore (10) slope extends to the preceding tip or the back tip of precast concrete piece (1).
3. The post-tensioned pre-stressed assembled intelligent traffic sign pavement structure as claimed in claim 2, wherein a corrugated pipe penetrates into the pre-stressed tendon duct (10), a pre-stressed steel bar (13) is arranged in the corrugated pipe, two ends of the pre-stressed steel bar (13) are fixedly connected with the precast concrete blocks (1) through anchor bolts (5), and the pre-stressed steel bar (10) is used for connecting the precast concrete blocks (1) on the front side and the rear side.
4. The post-tensioned pre-stressed assembled intelligent traffic sign pavement structure as claimed in claim 2, wherein a pavement rubber joint strip (3) is arranged between the luminous brick (2) and the luminous brick groove (12).
5. The post-tensioned pre-stressed assembled intelligent traffic sign pavement structure according to claim 2, wherein a rubber water stop (4) is arranged between two adjacent precast concrete blocks (1).
6. The post-tensioned pre-stressed assembled intelligent traffic sign pavement structure according to claim 2, wherein the strip-shaped grooves (9) are distributed on the left and right sides of the luminous brick grooves (12).
CN202210162433.1A 2022-02-22 2022-02-22 Post-tensioning prestress assembly type intelligent traffic sign pavement structure and installation method thereof Withdrawn CN114411486A (en)

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Application publication date: 20220429