CN114657833A - Sliding isolation layer structure for large-space expansion joint pavement and construction method - Google Patents
Sliding isolation layer structure for large-space expansion joint pavement and construction method Download PDFInfo
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- CN114657833A CN114657833A CN202210371131.5A CN202210371131A CN114657833A CN 114657833 A CN114657833 A CN 114657833A CN 202210371131 A CN202210371131 A CN 202210371131A CN 114657833 A CN114657833 A CN 114657833A
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- pavement
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- waterproof
- sliding
- layer structure
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- 238000002955 isolation Methods 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 title description 7
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002985 plastic film Substances 0.000 claims description 19
- 239000004575 stone Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000003973 paint Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 241000219112 Cucumis Species 0.000 claims description 7
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- 238000004078 waterproofing Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 2
- 238000009413 insulation Methods 0.000 claims 2
- 239000004567 concrete Substances 0.000 abstract description 20
- 239000004568 cement Substances 0.000 abstract description 15
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 62
- 239000011150 reinforced concrete Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 241000209094 Oryza Species 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Images
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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
-
- 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
-
- 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
- E01C7/00—Coherent pavings made in situ
-
- 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
- E01C7/00—Coherent pavings made in situ
- E01C7/02—Coherent pavings made in situ made of road-metal without binders
Abstract
The invention discloses a sliding isolation layer structure for a large-space expansion joint pavement, which sequentially comprises a waterproof layer, a gravel layer and a brittle sheet layer from bottom to top; the waterproof layer comprises a waterproof coiled material, and the waterproof coiled material upwards wraps the gravel layer at an expansion joint of the road surface, extends to the brittle sheet layer and is fixedly connected with the brittle sheet layer. The invention can realize the non-adhesive strength between the roadbed and the cement concrete pavement and reduce the sliding friction coefficient.
Description
Technical Field
The invention relates to the technical field of road engineering, in particular to a sliding isolation layer structure of a reinforced cement concrete pavement and a construction method.
Background
In order to adapt to the overload and large axle load and heavy traffic volume caused by industrial development, a pavement structure form with high bearing capacity and pavement performance is needed, and in order to achieve the purpose, the pavement is set into a continuous reinforced cement concrete pavement structure in the prior art, so that the bearing capacity and the service performance of the pavement structure are greatly improved compared with those of a common cement concrete pavement structure, but the following defects also exist: the continuous reinforced concrete pavement is a pavement structure with expansion joints, the expansion joints are designed to be small in width, rainwater hardly permeates into cracks, and the use performance of the pavement is not affected. Although the sliding isolation layer structure of the large-interval expansion joint reinforced cement concrete pavement superior to the continuous reinforced cement concrete pavement structure is provided in view of the problem, analysis shows that: temperature stress sigma of reinforced cement concrete panelthermalIs in direct proportion to the friction coefficient k between the base layers, namely the implementation effect of the isolation layer has a decisive effect on the realization of the design idea of the reinforced cement concrete pavement with the large-distance expansion joints, so that the isolation layer with small friction coefficient and high bonding strength is urgently needed.
Disclosure of Invention
The invention aims to provide a sliding isolation layer structure for a large-distance expansion joint pavement, which can realize the non-adhesive strength between a roadbed and a cement concrete pavement and reduce the sliding friction coefficient.
In order to achieve the purpose, the invention provides the following scheme:
a sliding isolation layer structure for a large-space expansion joint pavement sequentially comprises a waterproof layer, a gravel layer and a brittle sheet layer from bottom to top;
the waterproof layer comprises a waterproof coiled material, and the waterproof coiled material upwards wraps the gravel layer at an expansion joint of the road surface, extends to the brittle sheet layer and is fixedly connected with the brittle sheet layer.
Optionally, the waterproof roll is fixedly connected with the brittle sheet layer through a suction cup pull ring.
Optionally, the thickness of the sliding isolation layer is 2cm-3 cm.
Optionally, the crushed stone layer is soft round rock particles.
Optionally, the rock particles are 0.5 cm diameter guam stones.
Optionally, the frangible web layer comprises a plurality of connected rigid plastic webs.
Optionally, the plurality of rigid plastic sheets are connected by an AB glue or a silicone rubber.
Optionally, the waterproof layer still includes water proof coating, water proof coating applies paint with a brush on semi-rigid road bed, waterproofing membrane lays in on the water proof coating.
Optionally, the rigid plastic sheet has a thickness of 1-2 cm.
A method for building a sliding isolation layer for a large-distance expansion joint pavement comprises the following steps:
after waterproof paint is coated on the roadbed, waterproof coiled materials are laid, and the waterproof coiled materials extend upwards by 5cm-7cm when the expansion joints are laid;
paving the melon and rice stone on the waterproof coiled material;
lay the rigid plastic sheet on the melon and rice stone, adjacent plastic sheet adopts AB glue or organic silicon adhesive bonding, lays rigid plastic sheet to the expansion joint time, will the rigid plastic sheet passes through the sucking disc pull ring and is connected with the waterproofing membrane that extends out.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the gravel layer laid by the invention replaces gravel with soft round gravel, thus solving the problems that the gravel construction is easy to be disturbed and can not effectively support a plastic film, and if the gravel layer is directly laid, when the cement concrete pavement is constructed, the fresh concrete can generate cement slurry due to the vibration effect, and the cement slurry can form strength and bonding once seeping into the gravel layer, so that the gravel layer loses the function of reducing sliding friction; the connected brittle sheet layers effectively prevent mortar from infiltrating into the gravel layer during concrete pavement construction, and can isolate rainwater from infiltrating when tiny cracks appear on the pavement; the waterproof layer is arranged in an upturning mode, so that mortar can be prevented from seeping into the gravel layer through the expansion joint during concrete pavement construction, and the performance of the sliding isolation layer structure is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a sliding isolation layer structure for a pavement with large-space expansion joints according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for constructing a sliding isolation layer for a pavement with large-distance expansion joints according to an embodiment of the invention;
1-roadbed, 2-waterproof layer, 3-gravel layer, 4-brittle sheet layer, 5-cement concrete pavement and 6-sliding gravel layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are within the scope of the present invention.
The invention aims to provide a sliding isolation layer structure for a large-distance expansion joint pavement, which can realize the non-adhesive strength between a roadbed and a cement concrete pavement, reduce the sliding friction coefficient, improve the load distribution and the base waterproof performance and effectively control the tensile stress of the cement concrete pavement under the action of temperature load.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural view of a sliding isolation layer structure for a large-interval expansion joint pavement according to an embodiment of the present invention, and as shown in fig. 1, the sliding isolation layer structure for the large-interval expansion joint pavement is located between a roadbed 1 and a cement concrete pavement 5, the thickness of the sliding isolation layer is 2cm-3cm, and the sliding isolation layer structure sequentially includes a waterproof layer 2, a gravel layer 3 and a brittle sheet layer 4 from bottom to top;
the roadbed 1 is a semi-rigid base layer, and can select cement stabilization, lime stabilization, industrial waste residue stabilization and the like; waterproof layer 2 includes water proof coating and waterproofing membrane, water proof coating applies paint with a brush on semi-rigid road bed 1, water proof membrane lays in water proof coating is last, water proof membrane upwards wraps up in the expansion joint department on road surface and lives rubble layer 3 extends to brittle sheet layer 4, with the edge of brittle sheet layer 4 passes through sucking disc pull ring fixed connection, at this moment, and 3 parcels of rubble layer are in the enclosure space that waterproof layer 2 and brittle sheet layer 4 constitute.
The crushed stone layer 3 is soft round rock particles, preferably melon and rice stones with the diameter of 0.5 cm, as shown in fig. 1, after the isolation layer structure is built and a vehicle is started, the large crushed stone layer 3 is crushed by the load of the wheels to form a sliding sand gravel layer 6 under the action of the load of the vehicle, and the purpose of reducing friction can be achieved.
The fragile thin plate layer 4 is formed by laying a plurality of connected rigid plastic thin plates, the thickness of each rigid plastic thin plate is 1-2 cm, and the rigid plastic thin plates are connected through AB glue or organic silica gel.
Fig. 2 is a flow chart of a method for constructing a sliding isolation layer for a pavement with large-interval expansion joints according to an embodiment of the present invention, and as shown in fig. 2, the method for constructing a sliding isolation layer for a pavement with large-interval expansion joints includes:
s201, coating waterproof paint on the roadbed, paving a waterproof coiled material, and extending the waterproof coiled material upwards by 5cm-7cm when the waterproof coiled material is paved to an expansion joint;
s202, paving the melon and rice stone on the waterproof coiled material;
s203 lays the rigid plastic sheet on the melon and rice stone, and adjacent plastic sheet adopts AB glue or organic silicon adhesive bonding, when laying rigid plastic sheet to expansion joint, will the rigid plastic sheet passes through the sucking disc pull ring and is connected with the waterproofing membrane that extends out.
After the sliding isolation layer structure is built, a cement concrete pavement needs to be built continuously, and the concrete method comprises the following steps:
binding transverse and longitudinal steel bars on the brittle thin plate layer to form a longitudinal and transverse steel bar net, pouring cement concrete in sections in a longitudinal and transverse steel bar net template between every two large-interval expansion joints, vibrating to remove air compactly to form a reinforced cement concrete pavement, and mounting the expansion joints in a reserved space to form a large-interval expansion joint pavement structure when the strength of the reinforced cement concrete pavement reaches the standard.
Preferably, when concrete is poured between every two large-interval expansion joints, the concrete is symmetrically poured from the middle of the plastic thin plate to the two sides, so that the bending stress generated inside the plastic thin plate is avoided; the reinforcing mesh is erected on the rigid plastic sheet by adopting a reinforcing support method, the bound reinforcing mesh is required to be stable and flat, and the reinforcing steel bar is required to be straight and upright so as to prevent the broken port of the reinforcing steel bar from puncturing the rigid plastic sheet in the construction process; the vibrating rod is controlled to be at least 2cm above the reinforcing mesh when the concrete is vibrated so as to prevent the vibrating rod from being damaged due to the contact with the reinforcing mesh or the rigid plastic sheet and influence the compactness of the concrete.
The sliding isolation layer structure can greatly reduce the interlayer sliding friction and the interlayer shearing strength, realize almost no bonding strength between a roadbed and a cement concrete pavement, improve the load distribution and the base waterproof performance, and effectively control the tensile stress of the cement concrete panel under the action of temperature load, thereby realizing the arrangement of expansion joints with large intervals and ensuring the service performance of the pavement.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A sliding isolation layer structure for a large-space expansion joint pavement is characterized by sequentially comprising a waterproof layer, a gravel layer and a brittle sheet layer from bottom to top;
the waterproof layer comprises a waterproof coiled material, and the waterproof coiled material upwards wraps the gravel layer at an expansion joint of the road surface, extends to the brittle sheet layer and is fixedly connected with the brittle sheet layer.
2. The sliding insulating layer structure for pavement with large-interval expansion joints as claimed in claim 1, wherein the waterproof coiled material is fixedly connected with the brittle sheet layer through a suction cup pull ring.
3. The sliding insulating layer structure for pavement with large-interval expansion joints as claimed in claim 1, wherein the thickness of the sliding insulating layer is 2cm-3 cm.
4. The sliding insulating layer structure for pavement with large-interval expansion joints as claimed in claim 1, wherein said crushed stone layer is soft round rock particles.
5. The sliding insulation layer structure for pavement with large-interval expansion joints as claimed in claim 2, wherein the rock particles are 0.5 cm-diameter melon-rice stones.
6. The sliding insulating layer structure for pavement with large-interval expansion joints as claimed in claim 1, wherein said brittle thin plate layer comprises a plurality of connected rigid plastic thin plates.
7. The sliding insulation layer structure for pavement with large-interval expansion joints as claimed in claim 5, wherein said plurality of rigid plastic sheets are connected by AB glue or organic silica gel.
8. The sliding insulating layer structure for pavement with large-distance expansion joints as claimed in claim 1, wherein said waterproof layer further comprises a waterproof paint, said waterproof paint is painted on the semi-rigid roadbed, and said waterproof roll is laid on said waterproof paint.
9. The sliding insulating layer structure for pavement with large-interval expansion joints as claimed in claim 5, wherein the thickness of the rigid plastic thin plate is 1-2 cm.
10. A method for building a sliding isolation layer for a large-distance expansion joint pavement is characterized by comprising the following steps:
after waterproof paint is coated on the roadbed, waterproof coiled materials are laid, and the waterproof coiled materials extend upwards by 5cm-7cm when the expansion joints are laid;
paving the melon and rice stone on the waterproof coiled material;
lay the rigid plastic sheet on the melon and rice stone, adjacent plastic sheet adopts AB glue or organic silicon adhesive bonding, lays rigid plastic sheet to the expansion joint time, will the rigid plastic sheet passes through the sucking disc pull ring and is connected with the waterproofing membrane that extends out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371131.5A CN114657833A (en) | 2022-04-11 | 2022-04-11 | Sliding isolation layer structure for large-space expansion joint pavement and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371131.5A CN114657833A (en) | 2022-04-11 | 2022-04-11 | Sliding isolation layer structure for large-space expansion joint pavement and construction method |
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| Publication Number | Publication Date |
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| CN114657833A true CN114657833A (en) | 2022-06-24 |
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|---|---|---|---|
| CN202210371131.5A Pending CN114657833A (en) | 2022-04-11 | 2022-04-11 | Sliding isolation layer structure for large-space expansion joint pavement and construction method |
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| CN (1) | CN114657833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115726239A (en) * | 2022-12-09 | 2023-03-03 | 广东众强建设工程有限公司 | Prestressed pavement and construction method thereof |
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Application publication date: 20220624 |