CN113622255A - New and old concrete pavement splicing structure suitable for white and black pavement and construction method - Google Patents

New and old concrete pavement splicing structure suitable for white and black pavement and construction method Download PDF

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Publication number
CN113622255A
CN113622255A CN202110887485.0A CN202110887485A CN113622255A CN 113622255 A CN113622255 A CN 113622255A CN 202110887485 A CN202110887485 A CN 202110887485A CN 113622255 A CN113622255 A CN 113622255A
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China
Prior art keywords
base layer
new
pavement
old
concrete
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CN202110887485.0A
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Chinese (zh)
Inventor
黄超
刘俊龙
魏盟
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CCCC SHEC Third Highway Engineering Co Ltd
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CCCC SHEC Third Highway Engineering Co Ltd
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Priority to CN202110887485.0A priority Critical patent/CN113622255A/en
Publication of CN113622255A publication Critical patent/CN113622255A/en
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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
    • 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
    • E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints

Abstract

The invention provides a splicing structure and a construction method of a new and old concrete pavement suitable for a white and black pavement, wherein the splicing structure comprises a sleeper beam, a pavement structure layer and a splicing belt pull rod, the pavement structure layer comprises a new pavement structure layer and an old pavement structure layer, the old pavement structure layer comprises an asphalt pavement I, a concrete upper base layer I, a water-stable lower base layer I and a water-stable underlayer I, the new pavement structure layer comprises an asphalt pavement II, a concrete upper base layer II, a water-stable lower base layer II and a water-stable underlayer II, the sleeper beam is arranged at the bottom of a longitudinal joint of the new and old concrete pavement between the concrete upper base layer I and the concrete upper base layer II, and the splicing belt pull rod is arranged in the middle of the concrete upper base layer I and the concrete upper base layer II. The sleeper beam and the splicing belt pull rod are arranged in the construction of the white and black road surface extension highway, so that the new and old road surfaces are protected when being unevenly settled, longitudinal cracks are not generated, the safety of vehicles passing through the road surfaces is ensured, and the highway maintenance cost is reduced.

Description

New and old concrete pavement splicing structure suitable for white and black pavement and construction method
Technical Field
The invention relates to the technical field of pavement construction, in particular to a splicing structure and a construction method of a new concrete pavement and an old concrete pavement, which are suitable for white and black pavements.
Background
The prior road construction adopts a concrete road surface to pass through, and the vehicle continues to pass through after the top surface of the concrete road surface is covered by asphalt concrete when the road surface is reconstructed in the later period, namely a white-plus-black road surface. When the highway is expanded, the structural layers of a new road surface and an old road surface need to be spliced, but the construction period of the expanded road surface is different from that of the old road surface, the old road bed has small settlement, and the expanded road bed has short construction time and large later settlement, so that the road surface generates longitudinal cracks after the highway is completely built and traffic is communicated due to uneven settlement, the traffic safety of the road surface is influenced, and the maintenance cost is increased.
Disclosure of Invention
The invention provides a splicing structure and a construction method of a new concrete pavement and an old concrete pavement, which are suitable for white and black pavements, and solve the defects of pavement cracking and the like caused by uneven settlement of the new pavement and the old pavement.
The technical scheme of the invention is as follows: new and old concrete pavement mosaic structure suitable for white plus black road surface, including sleeper beam, road surface structural layer and concatenation area pull rod, road surface structural layer includes new road surface structural layer and old road surface structural layer, old road surface structural layer includes bituminous pavement I, concrete upper base layer I, the stable in water base layer I that set gradually from the top down, new road surface structural layer includes the bituminous pavement II that sets gradually each parts of old road surface structural layer etc. thick from the top down, concrete upper base layer II, the stable in water base layer II, the sleeper beam sets up the bottom of the vertical seam of new and old concrete road surface between concrete upper base layer I and concrete upper base layer II, through the stable in water base layer I, the stable in water base layer I to the sleeper beam excavation line formation cavity of excavation old road surface structural layer, sleeper beam one end is placed in the cavity, the other end is placed under water stable base layer II, water stable base layer II below, the setting of concatenation area pull rod is at the middle part of concrete upper base layer I and concrete upper base layer II.
According to the scheme, the sleeper beam is of a concrete structure, and the thickness of the sleeper beam is the sum of the thicknesses of the underwater stable base layer II and the underwater stable base layer II or the sum of the thicknesses of the underwater stable base layer I and the underwater stable base layer I.
And furthermore, a new road cushion layer is arranged at the bottoms of the sleeper beam and the water stabilization base layer II.
According to the scheme, the middle of the concrete upper base layer I is longitudinally provided with a plurality of pull rod holes at equal intervals along the route direction, one end of the splicing belt pull rod is fixed in the pull rod hole, and the other end of the splicing belt pull rod is poured and fixed in the concrete upper base layer II when the concrete upper base layer II is constructed.
According to the scheme, the bar planting glue is injected into the pull rod hole by an injection gun, and the splicing tape pull rod is further fixed when penetrating into the pull rod hole.
And the scheme is further that the end surface of the new road cushion layer close to the old road pavement structure layer is aligned with the longitudinal joint of the new and old concrete pavement.
The scheme is further that a step is formed between the asphalt pavement I and the concrete upper base layer I, and the longitudinal joint of the new and old asphalt pavement and the longitudinal joint of the new and old concrete pavement between the asphalt pavement I and the asphalt pavement II are located on different vertical planes.
In another aspect of the present invention, a new and old concrete pavement construction method suitable for white and black pavement is provided, which comprises the following steps:
the method comprises the following steps: processing an old road pavement structure layer, chiseling and cutting the old road pavement structure layer to form a step between an asphalt pavement I and a concrete upper base layer I, and flattening the sections of the concrete upper base layer I, the water-stable lower base layer I and the water-stable underlayer I of the old road pavement structure layer to form a flat new and old asphalt pavement longitudinal joint and a flat new and old concrete pavement longitudinal joint;
step two: laying a new road cushion layer, chiseling the bottom of a concrete upper base layer II of an old road pavement structure layer by adopting machinery, chiseling to a sleeper beam excavation line, wherein the sleeper beam excavation line formed by chiseling exceeds a longitudinal joint of a new and old concrete pavement, laying the new road cushion layer, wherein the new road cushion layer is positioned below a water-stable base layer I of the old road pavement structure layer, and a cavity is formed between the new road cushion layer and the old road pavement structure layer;
step three: paving a sleeper beam, installing a template on the new road cushion layer and pouring concrete, filling the cavity during pouring, finishing the paving of the sleeper beam, and placing the sleeper beam below the concrete upper base layer I and the concrete upper base layer II;
step four: installing splicing belt pull rods, drilling a plurality of pull rod holes in the middle of the concrete upper base layer I by adopting a handheld electric hammer drilling machine, arranging the pull rod holes longitudinally at equal intervals along the route direction, injecting bar-planting glue into the pull rod holes by utilizing an injection gun, and inserting the splicing belt pull rods into the pull rod holes;
step five: and laying a new road pavement structure layer, and sequentially laying a water-stable base layer II, a water-stable lower base layer II, a concrete upper base layer II and an asphalt pavement II from bottom to top to finish splicing the new road pavement and the old road pavement.
And further, the template required by the construction in the third step is a steel template, and a sectional pouring method is adopted during pouring of concrete of the sleeper beam.
The invention has the advantages that: the method is used for constructing the white-plus-black road surface extension highway, the sleeper beam is arranged at the bottom of the longitudinal joint of the new and old concrete road surfaces, and the splicing belt pull rod is arranged at the joint of the upper base layer of the concrete of the new and old road surfaces, so that the new and old road surfaces are protected when the new and old road surfaces are unevenly settled, longitudinal cracking is avoided, the safety of vehicles passing through the road surfaces is ensured, and the highway maintenance cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a splicing structure of new and old concrete pavements suitable for white and black pavements;
FIG. 2 is a schematic view of the installation of the splicing belt pull rod of the splicing structure of the new and old concrete pavements applicable to the white and black pavements;
wherein: 1. the concrete asphalt pavement structure comprises a sleeper beam, 2 tie rods, tie rod holes, 3 splicing belt tie rods, 4 longitudinal joints of new and old concrete pavements, 5 longitudinal joints of new and old asphalt pavements, 6-1 longitudinal joints of concrete upper base layers, 6-2 longitudinal joints of water-stable lower base layers, 6-3 longitudinal joints of water-stable lower base layers, 7-1 longitudinal joints of water-stable lower base layers, 7-2 longitudinal joints of concrete upper base layers, 7-3 longitudinal joints of water-stable lower base layers, 7-4 longitudinal joints of water-stable lower base layers, 8 longitudinal joints of sleeper beam excavation lines, 9 longitudinal joints of reinforcing steel bar planting glue and new road cushion layers.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
As shown in fig. 1-2, which is a schematic view of the uncovered structure of the present invention, the specific embodiment is: the new and old concrete pavement splicing structure suitable for the white and black pavement comprises a sleeper beam 1, a pavement structure layer and a splicing belt pull rod 3, wherein the pavement structure layer comprises a new pavement structure layer and an old pavement structure layer, the old pavement structure layer comprises an asphalt pavement I, a concrete upper base layer I6-1, a water-stable lower base layer I6-2 and a water-stable underlayer I6-3 which are sequentially arranged from top to bottom, the new pavement structure layer comprises an asphalt pavement II, a concrete upper base layer II 7-1, a water-stable lower base layer II 7-2 and a water-stable underlayer II 7-3 which are sequentially arranged from top to bottom and have the same thickness with each part of the old pavement structure layer, the sleeper beam 1 is arranged at the bottom of a longitudinal joint 4 of the new and old concrete pavement between the concrete upper base layer I6-1 and the concrete upper base layer II 7-1, and the water-stable lower base layer I6-2, the water-stable underlayer II 7 and the water-stable underlayer are excavated through the old pavement structure layer, The water-stable base layer I6-3 and the sleeper beam excavation line 8 form a cavity, one end of the sleeper beam 1 is placed in the cavity, the other end of the sleeper beam is placed below the water-stable base layer II 7-2 and the water-stable base layer II 7-3, and the splicing belt pull rod 3 is arranged in the middle of the concrete upper base layer I6-1 and the concrete upper base layer II 7-1.
Furthermore, the sleeper beam 1 is of a concrete structure, and the thickness of the sleeper beam is the sum of the thicknesses of the water-stable base layer II 7-2 and the water-stable base layer II 7-3 or the sum of the thicknesses of the water-stable base layer I6-2 and the water-stable base layer I6-3.
Further, a new road cushion layer 7-4 is arranged at the bottom of the sleeper beam 1 and the water-stable lower base layer II 7-3, and the new road cushion layer 7-4 is also paved in the cavity.
Furthermore, a plurality of pull rod holes 2 are longitudinally arranged in the middle of the concrete upper base layer I6-1 at equal intervals along the route direction, one end of the spliced pull rod 3 is fixed in the pull rod holes 2, and the other end of the spliced pull rod is poured and fixed in the concrete upper base layer II 7-1 when the concrete upper base layer II 7-1 is constructed.
In the invention, an injection gun is used for injecting the bar planting adhesive 9 into the pull rod hole 2, and the splicing tape pull rod 3 is further fixed when penetrating into the pull rod hole 2.
Further, the end face of the new road cushion layer 7-4 close to the old road pavement structure layer is aligned with the longitudinal joint 4 of the new and old concrete pavements.
Furthermore, a step is formed between the asphalt pavement I and the concrete upper base layer I6-1, and the longitudinal joint 5 of the old and new asphalt pavement and the longitudinal joint 4 of the old and new concrete pavement between the asphalt pavement I and the asphalt pavement II are positioned on different vertical planes, so that the old and new pavements are in lap joint, and the bonding performance is improved.
In another aspect of the present invention, a new and old concrete pavement construction method suitable for white and black pavement is provided, which comprises the following steps:
the method comprises the following steps: processing an old road pavement structure layer, chiseling and cutting the old road pavement structure layer to form a step between an asphalt pavement I and a concrete upper base layer I6-1, and chiseling the sections of the concrete upper base layer I6-1, the water-stable lower base layer I6-2 and the water-stable base layer I6-3 of the old road pavement structure layer to form a smooth new and old asphalt pavement longitudinal joint 5 and a smooth new and old concrete pavement longitudinal joint 4;
step two: laying a new road cushion layer 7-4, chiseling the bottom of a concrete upper base layer II 7-1 of an old road pavement structure layer by adopting machinery, chiseling to a sleeper beam excavation line 8, wherein the sleeper beam excavation line 8 formed by chiseling exceeds a longitudinal joint 4 of the new and old concrete road surfaces to form a cavity with the section size of the old road being 20cm multiplied by 36cm, laying the new road cushion layer 7-4 at the bottom of the cavity, wherein the new road cushion layer 7-4 is positioned below a water-stable base layer I7-3 of the old road pavement structure layer, and the rest cavity between the new road cushion layer 7-4 and the old road pavement structure layer is formed;
step three: laying a sleeper beam 1, installing a template on a new road cushion layer 7-4 and pouring concrete, filling a cavity during pouring, finishing laying the sleeper beam 1, placing the sleeper beam 1 below a concrete upper base layer I6-1 and a concrete upper base layer II 7-1, and extending the sleeper beam 1 into the concrete upper base layer I6-1 by 20cm and into the concrete upper base layer II 7-1 by 25 cm;
step four: installing a splicing belt pull rod 3, drilling a plurality of pull rod holes 2 in the middle of an upper concrete base layer I6-1 by adopting a handheld electric hammer drilling machine, wherein the diameter of a drill bit of the drilling machine is 20mm, the depth of each pull rod hole 2 is 31cm, the pull rod holes 2 are longitudinally arranged at equal intervals along the direction of a route, an injection gun is used for injecting bar-planting glue 9 in each pull rod hole 2, the splicing belt pull rod 3 is inserted into the pull rod hole 2, the splicing belt pull rod 3 is made of 16 mm-phi deformed steel with the total length of 70cm, the splicing belt pull rods 3 are longitudinally arranged at intervals of 60cm along the direction of the route and extend into the inner part of the upper concrete base layer I6-1 by 30 cm;
step five: and (3) laying a new road pavement structure layer, sequentially laying a water-stable base layer II 7-3, a water-stable lower base layer II 7-2, a concrete upper base layer II 7-1 and an asphalt pavement II from bottom to top, completing splicing of the new road and the old road, and constructing after the construction of the sleeper beam 1 is completed, so that the edge compaction degree can be ensured.
Further, the formwork required by the construction in the third step is a steel formwork, and a sectional pouring method is adopted when the concrete of the sleeper beam 1 is poured.
The method is used for constructing the white and black road surface extension road, the sleeper beam 1 is arranged at the bottom of the longitudinal joint of the new and old concrete road surfaces, the new road cushion layer 7-4 is laid below the sleeper beam 1, the splicing belt pull rod is arranged at the joint of the upper base layer of the concrete of the new and old road surfaces, the structural integrity of the road surfaces is improved, the new and old road surfaces are protected when the new and old road surfaces are unevenly settled, the longitudinal cracking is avoided, the safety of vehicles passing through the road surfaces is ensured, the maintenance cost of the road is reduced, meanwhile, the asphalt concrete of the old road surfaces is cut to form the longitudinal joint 5 of the new and old asphalt road surfaces, the sleeper beam 1 and the splicing belt pull rod 3 are sequentially constructed, the water stabilizing base layer II 7-3, the water stabilizing base layer II 7-2, the upper base layer II 7-1 and the asphalt road surface II are laid, and the degree of compaction of the edge part can be ensured.
While the preferred embodiments of the invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.

Claims (9)

1. New and old concrete pavement mosaic structure suitable for white plus black road surface, its characterized in that includes sleeper beam, road surface structural layer and concatenation area pull rod, road surface structural layer includes new road surface structural layer and old road surface structural layer, old road surface structural layer includes asphalt pavement I, concrete upper base layer I, the stable in water base layer I that set gradually from the top down, new road surface structural layer includes the asphalt pavement II that sets gradually and all parts of old road surface structural layer etc. thick from the top down, concrete upper base layer II, the stable in water base layer II, the sleeper beam sets up the bottom of new and old concrete road surface longitudinal joint between concrete upper base layer I and concrete upper base layer II, through the stable in water base layer I, the stable in water base layer I to the sleeper beam excavation line formation cavity of excavating old road surface structural layer, sleeper beam one end is placed in the cavity, the other end is placed under water stable base layer II, water stable base layer II below, the setting of concatenation area pull rod is at the middle part of concrete upper base layer I and concrete upper base layer II.
2. The splicing structure of new and old concrete pavements suitable for white and black pavements as claimed in claim 1, wherein the sleeper beam is a concrete structure and has a thickness which is the sum of the thicknesses of the underwater stable base layer II and the underwater stable base layer II or the sum of the thicknesses of the underwater stable base layer I and the underwater stable base layer I.
3. The splicing structure of the old and new concrete pavements suitable for the white and black pavements as claimed in claim 1, wherein the bottom of the sleeper beam and the water stable base layer II is provided with a new pavement layer.
4. The splicing structure of the old concrete pavement and the new concrete pavement suitable for the white blackened pavement as claimed in claim 1, wherein a plurality of pull rod holes are longitudinally arranged in the middle of the concrete upper base layer I at equal intervals along the route direction, one end of each splicing strip pull rod is fixed in each pull rod hole, and the other end of each splicing strip pull rod is fixed in the concrete upper base layer II in a pouring mode when the concrete upper base layer II is constructed.
5. The splicing structure of new and old concrete pavements suitable for white and black pavements according to claim 4, wherein the tie bar hole is injected with planting bar glue by an injection gun, and the splicing tie bar is further fixed when penetrating into the tie bar hole.
6. The splicing structure of new and old concrete road surfaces suitable for white plus black road surfaces as claimed in claim 3, wherein the new road cushion layer is aligned with the longitudinal joints of the new and old concrete road surfaces close to the end surfaces of the old road surface structure layer.
7. The splicing structure of the old and new concrete pavements suitable for the white and black pavements as claimed in claim 1, wherein a step is formed between the asphalt pavement I and the concrete upper base layer I, and the longitudinal joint of the old and new asphalt pavements between the asphalt pavement I and the asphalt pavement II and the longitudinal joint of the old and new concrete pavements are on different vertical planes.
8. The new and old concrete pavement construction method suitable for the white and black pavement is characterized by comprising the following steps of:
the method comprises the following steps: processing an old road pavement structure layer, chiseling and cutting the old road pavement structure layer to form a step between an asphalt pavement I and a concrete upper base layer I, and flattening the sections of the concrete upper base layer I, the water-stable lower base layer I and the water-stable underlayer I of the old road pavement structure layer to form a flat new and old asphalt pavement longitudinal joint and a flat new and old concrete pavement longitudinal joint;
step two: laying a new road cushion layer, chiseling the bottom of a concrete upper base layer II of an old road pavement structure layer by adopting machinery, chiseling to a sleeper beam excavation line, wherein the sleeper beam excavation line formed by chiseling exceeds a longitudinal joint of a new and old concrete pavement, laying the new road cushion layer, wherein the new road cushion layer is positioned below a water-stable base layer I of the old road pavement structure layer, and a cavity is formed between the new road cushion layer and the old road pavement structure layer;
step three: paving a sleeper beam, installing a template on the new road cushion layer and pouring concrete, filling the cavity during pouring, finishing the paving of the sleeper beam, and placing the sleeper beam below the concrete upper base layer I and the concrete upper base layer II;
step four: installing splicing belt pull rods, drilling a plurality of pull rod holes in the middle of the concrete upper base layer I by adopting a handheld electric hammer drilling machine, arranging the pull rod holes longitudinally at equal intervals along the route direction, injecting bar-planting glue into the pull rod holes by utilizing an injection gun, and inserting the splicing belt pull rods into the pull rod holes;
step five: and laying a new road pavement structure layer, and sequentially laying a water-stable base layer II, a water-stable lower base layer II, a concrete upper base layer II and an asphalt pavement II from bottom to top to finish splicing the new road pavement and the old road pavement.
9. The method for constructing a new or used concrete pavement suitable for white plus black pavement according to claim 8, wherein the templates required for construction in the third step are steel templates, and the sleeper beam concrete is cast by a sectional casting method.
CN202110887485.0A 2021-08-03 2021-08-03 New and old concrete pavement splicing structure suitable for white and black pavement and construction method Pending CN113622255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110887485.0A CN113622255A (en) 2021-08-03 2021-08-03 New and old concrete pavement splicing structure suitable for white and black pavement and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110887485.0A CN113622255A (en) 2021-08-03 2021-08-03 New and old concrete pavement splicing structure suitable for white and black pavement and construction method

Publications (1)

Publication Number Publication Date
CN113622255A true CN113622255A (en) 2021-11-09

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ID=78382452

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Application Number Title Priority Date Filing Date
CN202110887485.0A Pending CN113622255A (en) 2021-08-03 2021-08-03 New and old concrete pavement splicing structure suitable for white and black pavement and construction method

Country Status (1)

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CN (1) CN113622255A (en)

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