CN217479871U - Tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer - Google Patents

Tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer Download PDF

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CN217479871U
CN217479871U CN202220149969.5U CN202220149969U CN217479871U CN 217479871 U CN217479871 U CN 217479871U CN 202220149969 U CN202220149969 U CN 202220149969U CN 217479871 U CN217479871 U CN 217479871U
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layer
asphalt
wheel
emulsified asphalt
surface layer
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涂当正
杨庆强
王粤荣
李军生
陈振侃
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Guangzhou Communications Investment Group Co ltd
South China University of Technology SCUT
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Guangzhou Communications Investment Group Co ltd
South China University of Technology SCUT
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Abstract

The utility model discloses an use tunnel pavement structure of on-stick wheel emulsified asphalt adhesive layer. The road surface structure comprises an SBS modified asphalt SMA-10 asphalt mixture upper surface layer, a lower surface layer, a paving layer and a leveling layer which are sequentially paved from top to bottom. The upper surface layer of the SBS modified asphalt SMA-10 asphalt mixture has good anti-sliding performance, waterproof performance and durability, is suitable for a damp environment in a tunnel, ensures the service performance of a pavement and improves the driving comfort; the utility model discloses the viscous coat oil adopts on-stick wheel emulsified asphalt, and the solidification of breakdown of emulsion and on-stick wheel can be fast after the viscous coat oil spills the cloth, all is suitable for traditional paver and synchronous paver to the construction degree of difficulty and construction requirement have been reduced. In addition, the viscous layer oil can greatly reduce the viscous layer oil taken away by the wheels of the paver, and improve the bonding strength between the upper surface layer and the middle surface layer, thereby improving the engineering quality.

Description

Tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer
Technical Field
The utility model belongs to the road engineering field, in particular to use tunnel pavement structure on-stick wheel emulsified asphalt adhesion coating.
Background
In recent years, the construction amount of domestic tunnels is increased rapidly, and the road performance of the original tunnel pavement cannot meet the current traffic demand along with the increase of the road traffic.
The existing old tunnel pavement is mainly divided into a cement concrete pavement and a traditional asphalt concrete pavement. Although the cement pavement has good water stability, high bearing capacity and durability, for example, the cement pavement proposed by the high snow peak in the 'cement concrete pavement structure of a regenerated cement concrete surface layer' of the Chinese utility model patent comprises an upper surface layer, a reinforcing mesh and an upper base layer, wherein the reinforcing mesh is arranged in the upper surface layer, a middle surface layer is arranged at the bottom of the upper surface layer, a lower surface layer is arranged at the bottom of the middle surface layer, an upper base layer is arranged at the bottom of the lower surface layer, a lower base layer is arranged at the bottom of the upper base layer, and a cushion layer is arranged at the bottom of the lower base layer, so that the waste building material can be reasonably utilized, the energy waste is avoided, but the defects of large noise, poor flatness, unsatisfactory skid resistance and the like exist; the asphalt concrete pavement meets the requirements in the aspects of noise, flatness and skid resistance, and the asphalt concrete pavement structure provided in the Chinese utility model patent 'double-layer drainage asphalt concrete pavement structure' like Zhoujiang and the like comprises the following components in sequence from top to bottom: the upper surface layer is a fine grain type pervious asphalt concrete layer, the middle surface layer is a coarse grain type pervious asphalt concrete layer, the lower surface layer is a dense grading asphalt concrete layer, a base layer and a soil base layer; the upper fine grain type pervious asphalt concrete layer comprises PAC13 pervious asphalt concrete or PAC10 pervious asphalt concrete; the middle-surface-layer coarse-grain type permeable asphalt concrete layer comprises PAC20 permeable asphalt concrete or PAC16 permeable asphalt concrete, can solve the problems that a permeable pavement gap is easy to block, the strength is low, the frost heaving resistance is poor and the like, but the problems that water is easy to generate in a tunnel humid environment to damage, the durability is poor, the interlayer moving is caused and the like cannot meet the existing traffic requirements.
Disclosure of Invention
The utility model aims to solve the not enough of current tunnel pavement structure technique, provide an use novel on-stick wheel emulsified asphalt and SBS modified asphalt SMA bituminous mixture's antiskid and fall waterproof road surface structure of making an uproar, satisfy the requirement that the road surface is overall energy-concerving and environment-protective, possess good long-term economic benefits. The SBS modified asphalt SMA-10 pavement used by the tunnel pavement structure provided by the utility model has the characteristics of good anti-skid capability, low noise of drainage and the like; the emulsified asphalt without the wheel used has the advantages of rapid demulsification, strong cohesive force, no wheel adhesion and the like, is suitable for the traditional paving method, can ensure the construction quality, obviously improves the pavement durability, and can effectively avoid the diseases such as interlayer shift and the like.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize.
The utility model provides a pair of novel bituminous mixture road surface structure for tunnel pavement, include the screed-coat, the layer of mating formation, the lower surface course, on-stick wheel emulsified asphalt tie coat and SBS modified asphalt SMA-10 bituminous mixture upper strata of laying in proper order from supreme down.
The pavement structure adopting the scheme is characterized in that the leveling layer is positioned at the bottommost layer and plays a role in bearing, the pavement layer and the lower surface layer play a role in transferring and diffusing wheel loads, the wheel-sticking-free emulsified asphalt bonding layer plays a role in increasing the bonding effect between the upper surface layer and the lower surface layer of the SBS modified asphalt SMA-10 asphalt mixture so as to effectively avoid the occurrence of interlayer transition, the upper surface layer of the SBS modified asphalt SMA-10 asphalt mixture plays a role in improving the pavement function, the driving comfort and the water damage resistance can be effectively improved, the service life of the pavement is prolonged, the noise is low, the environment is protected, the pavement can be quickly drained, and the skid resistance is good.
In the further improvement of the utility model, the leveling layer adopts C10 lean concrete or C15 lean concrete.
To the further improvement of the utility model, the layer of mating formation adopts C35 cement concrete or C40 cement concrete.
In the further improvement of the utility model, the lower surface layer adopts AC-13 asphalt mixture or AC-16 asphalt mixture.
To the further improvement of the utility model, the SBS modified asphalt SMA-10 asphalt mixture consists of SBS modified asphalt, coarse aggregate, fine aggregate and mineral powder, wherein the SBS modified asphalt is cementing material.
To the further improvement of the utility model, the AC-13 asphalt mixture is composed of SBS modified asphalt, coarse aggregate, fine aggregate and mineral powder, wherein the SBS modified asphalt is cementing material.
To the further improvement of the utility model, the AC-16 asphalt mixture is composed of SBS modified asphalt, coarse aggregate, fine aggregate and mineral powder, wherein the SBS modified asphalt is cementing material.
To the further improvement of the utility model, the C35 cement concrete is composed of cement, water, sand and stones, wherein the cement is a cementing material.
To the further improvement of the utility model, the C40 cement concrete is composed of cement, water, sand and stones, wherein the cement is a gelled material.
In a further improvement of the present invention, the C10 lean concrete is composed of cement, water, sand and stones, wherein the cement is a cementitious material.
In a further improvement of the present invention, the C15 lean concrete is composed of cement, water, sand and gravel, wherein the cement is a cementitious material.
To the further improvement of the utility model, in the non-stick wheel emulsified asphalt adhesive layer, the coating amount of the non-stick wheel emulsified asphalt is 0.3kg/m 2 ~0.6kg/m 2 The demulsification speed type is a fast cracking type,the demulsification hardening time is not more than 45 minutes, the drawing bonding strength range is 0.8-0.95 MPa, and the technical requirement that the bonding strength is more than 0.69MPa is met.
To the further improvement of the utility model, the void ratio of the upper surface layer of the SBS modified asphalt SMA-10 asphalt mixture is not more than 6 percent.
To the further improvement of the utility model, the thickness of the leveling layer is more than 25 cm.
To the further improvement of the utility model, the thickness of the paving layer is 25-30 cm.
In the further improvement of the utility model, the thickness of the lower layer is 5-6 cm.
To the further improvement of the utility model, the thickness of the upper layer of the SBS modified asphalt SMA-10 asphalt mixture is 4 cm.
To the further improvement of the utility model, the upper surface of the leveling layer needs to be milled and planed for 4-5mm before the layer is poured and paved, and the water is sprayed for 0.3kg/m 2 The cement paste.
It is right to the utility model discloses a further improvement, need pave on the layer the finish milling 5mm of milling before the lower surface course, the layer upper surface of mating formation paves under clean dry state after milling the finish milling the lower surface course.
It is right to the further improvement of the utility model, the upper surface on upper surface layer is the inclined plane the lower end outside on inclined plane is provided with the water catch bowl. By arranging the water collecting tank, the road surface water can flow into the water collecting tank along the inclined surface of the upper surface layer of the SBS modified asphalt SMA-10 asphalt mixture and is discharged through the water collecting tank, and the road surface water is effectively removed, so that the anti-skid property of the road surface can be further improved, the friction force between wheels and the road surface is increased, and the driving safety and the comfort are ensured.
Compared with the prior art, the utility model discloses beneficial effect that can realize at least as follows:
(1) the utility model discloses a tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer, the upper layer adopts SBS modified asphalt SMA-10 asphalt mixture, can effectively improve driving comfort and water damage resistance, prolong pavement service life, low noise and environmental protection, the road surface can rapidly drain water, and the skid resistance is good; the bonding layer is made of non-stick wheel emulsified asphalt, so that the bonding layer oil can be effectively prevented from being adhered to the wheel while the step-by-step paving construction requirement is met, the bonding strength is ensured to meet the requirement, the diseases such as interlayer moving and the like are effectively prevented, the construction difficulty and the construction cost are reduced, and the long-term economic benefit and the application prospect are achieved.
(2) The utility model discloses a viscous layer adopts on-stick wheel emulsified asphalt, and the viscous layer oil that paver wheel that should viscous layer oil can significantly reduce was taken away improves the bond strength between upper strata and the well surface course to improve engineering quality.
(3) The utility model discloses the viscous coat oil adopts on-stick wheel emulsified asphalt, and the solidification of breakdown of emulsion and on-stick wheel can be fast after the viscous coat oil spills the cloth, all is suitable for traditional paver and synchronous paver to the construction degree of difficulty and construction requirement have been reduced.
(4) The utility model discloses can have antiskid drainage concurrently, fall make an uproar, the durability is good, advantage such as driving is comfortable.
Drawings
In order to illustrate the embodiments of the invention or the prior art more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive effort, wherein:
fig. 1 is a schematic structural diagram of a tunnel pavement structure using a wheel-nonstick emulsified asphalt adhesion layer provided by an embodiment of the present invention;
fig. 2 is a schematic view of a water collection tank provided in an embodiment of the present invention;
FIG. 3 is a schematic view of the layers and their materials in an embodiment of the present invention;
in the figure:
1-SBS modified asphalt SMA-10 asphalt mixture upper surface layer; 2-wheel-sticking-free emulsified asphalt adhesive layer; 3-lower surface layer; 4-paving layer; 5-leveling layer; 6-water collecting tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts are all the protection scope of the present invention.
As shown in figure 1, the utility model provides an use tunnel pavement structure of on-stick wheel emulsified asphalt, including the screed-coat 5 that is located the bottommost layer that has the bearing effect, pave the layer of mating formation 4 and the lower floor 3 that have transmission and diffusion wheel load on the screed-coat 5, set up on SBS modified asphalt SMA-10 bituminous mixture upper strata 1 with on the lower floor 3 have the on-stick wheel emulsified asphalt adhesion coating 2 that increases the bonding effect between the layer, and cover play on the on-stick wheel emulsified asphalt adhesion coating 2 and improve the SBS modified asphalt SMA-10 bituminous mixture upper strata 1 of road surface function.
In some embodiments of the present invention, the thickness of the upper layer 1 of the SBS modified asphalt SMA-10 asphalt mixture is 4cm, and the material is SMA-10 asphalt mixture.
The SBS modified asphalt SMA-10 asphalt mixture consists of SBS modified asphalt, coarse aggregate, fine aggregate and mineral powder, wherein the SBS modified asphalt is cementing material. In particular PG76-22 grade modified asphalt with 6.2 percent of asphalt content. The grading is a discontinuous grading skeleton pore structure. The technical requirements of the SMA-10 asphalt mixture on the design of mixing ratio, mixing, transportation, paving and compaction forming are detailed in technical Specification for road asphalt pavement construction (JTG F40-2004).
During construction, the emulsified asphalt adhesive layer 2 of the non-stick wheel needs to be immediately paved with the upper surface layer 1 of the SBS modified asphalt SMA-10 asphalt mixture after demulsification and water evaporation are completed, so that the emulsified asphalt adhesive layer 2 of the non-stick wheel is prevented from being polluted, and the bonding strength and the construction quality are ensured.
Some of the embodiments of the present inventionIn the example, the coating amount of the wheel-sticking-free emulsified asphalt adhesion layer 2 is 0.3kg/m 2 ~0.6kg/m 2 The demulsification speed type is a quick-cracking type, the demulsification hardening time is not more than 45 minutes, the drawing bonding strength range is 0.8-0.95 MPa, and the technical requirement that the bonding strength is more than 0.69MPa is met.
The spraying process and the spraying requirements of the emulsified asphalt bonding layer oil without sticking the wheel are consistent with those of the common emulsified asphalt bonding layer oil, and see the technical requirements of technical Specifications for construction of road asphalt pavements (JTG F40-2004) for details. Before spreading, the road surface should be cleaned, the spray head should be adjusted, the viscous layer oil should be preheated, and the spreading amount should be corrected. And the upper surface of the lower surface layer 3 cannot be sprayed with the viscous layer oil when being wet, and the upper surface of the lower surface layer 3 cleaned by water can be sprayed with the viscous layer oil only after being dried. The viscous layer oil can be manually sprayed or sprayed by an intelligent spraying vehicle, and the viscous layer oil can be sprayed by the intelligent spraying vehicle to the greatest extent under the condition so as to ensure the uniformity of spraying. Before spreading construction, the spreading amount should be calibrated. In one embodiment of the present invention, the amount of the sprayed cloth is 0.3-0.6 kg/m 2 The amount of distribution should be determined according to the particular engineering situation, and in other embodiments, the amount of distribution may be set to other values.
In some embodiments of the present invention, the lower layer 3 is made of AC-13 asphalt mixture or AC-16 asphalt mixture, and the AC-13 asphalt mixture or AC-16 asphalt mixture is composed of SBS modified asphalt, coarse aggregate, fine aggregate and mineral powder. The SBS modified asphalt is a cementing material, specifically PG76-22 grade modified asphalt, 6% SBS is added for on-site modification, the ore adopts high-quality diabase, and the filler adopts limestone mineral powder.
The technical requirements of the asphalt mixture design, mixing, transportation, paving and compaction forming of the lower layer 3 are detailed in technical Specifications for road asphalt pavement construction (JTG F40-2004). Before paving the lower surface layer 3, the upper surface of the pavement layer 4 should be milled and milled for 5mm, and the pavement layer 4 is paved when in a clean and dry state, and the lower surface layer 3 is paved.
In some embodiments of the present invention, the thickness of the lower layer 3 is 5-6 cm.
In some embodiments of the present invention, the concrete material of the pavement layer 4 is C35 cement concrete or C40 cement concrete, and the C35 cement concrete or C40 cement concrete is composed of cement, water, sand and stones, wherein the cement is a gelled material.
The mix proportion design, the stirring, the transportation and the paving of the paving layer 4 are constructed according to the construction process standard of the technical Specification for the construction of the cement concrete pavement of the highway (JTG F30-2003).
Before the pavement layer 4 is paved, the upper surface of the leveling layer 5 is finely milled for 4-5mm and is sprayed for 0.3kg/m 2 The cement paste.
In some embodiments of the present invention, the thickness of the paving layer 4 is 25-30 cm.
In some embodiments of the present invention, the thickness of the leveling layer 5 should be more than 25cm and satisfy the requirement of the height consistency of the tunnel pavement surface layer and the connection pavement surface layer, the concrete material is C10 lean concrete or C15 lean concrete, and the C10 lean concrete or C15 lean concrete is composed of cement, water, sand and stone, wherein the cement is a gelled material. The design of the mixing proportion, the stirring, the transportation and the paving of the poor concrete of the leveling layer 5 are carried out according to the construction process standard of the technical Specification for the construction of cement concrete pavements of highways (JTG F30-2003).
Referring to fig. 2, in some embodiments of the present invention, the SBS modified asphalt SMA-10 asphalt mixture upper layer 1 is an inclined surface layer, and a water collection tank 6 is disposed outside a lower end of the SBS modified asphalt SMA-10 asphalt mixture upper layer 11, and an upper opening of the water collection tank 6 is flush with a lower end of the SBS modified asphalt SMA-10 asphalt mixture upper layer 1.
Under the humid environment in the tunnel, road surface water can quickly flow into the water collecting tank 6 along the cross slope of the upper surface of the SBS modified asphalt SMA-10 asphalt mixture upper surface layer 1 and is discharged. The structure can effectively remove water on the road surface, ensure the skid resistance of the road surface and increase the driving safety and comfort.
By adopting the tunnel pavement structure using the non-stick wheel emulsified asphalt adhesive layer provided by the embodiment of the utility model, the SBS modified asphalt SMA-10 asphalt mixture upper layer 1 adopts the SBS modified asphalt SMA-10 asphalt mixture, has good anti-skid property, waterproof property and durability, is suitable for the humid environment in the tunnel, can ensure the service performance of the pavement and improve the driving comfort; the viscous layer oil adopts non-stick wheel emulsified asphalt, can be quickly demulsified and cured after being sprayed, is not stick to the wheel, and is suitable for both the traditional paver and the synchronous paver, thereby reducing the construction difficulty and the construction requirement and leading the tunnel pavement structure to have wider application prospect. In addition, the viscous layer oil can greatly reduce the viscous layer oil taken away by the wheels of the paver and improve the bonding strength between the upper surface layer and the middle surface layer, so that the engineering quality can be improved, the occurrence of diseases such as interlayer transition and the like can be effectively avoided, the durability of the pavement in use is further improved, and the long-term economic benefit is achieved. The utility model discloses simple structure has cling compound drainage concurrently, falls and makes an uproar, advantage such as the durability is good, the driving is comfortable.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A tunnel pavement structure using a non-stick wheel emulsified asphalt adhesive layer is characterized by comprising a leveling layer (5), a paving layer (4), a lower surface layer (3), a non-stick wheel emulsified asphalt adhesive layer (2) and an SBS modified asphalt SMA-10 asphalt mixture upper surface layer (1) which are sequentially paved from bottom to top.
2. The tunnel pavement structure using the wheel-free emulsified asphalt binder according to claim 1, wherein: the leveling layer (5) adopts C10 lean concrete or C15 lean concrete.
3. The tunnel pavement structure using the wheel-nonstick emulsified asphalt adhesion layer according to claim 1, wherein: the pavement layer (4) is made of C35 cement concrete or C40 cement concrete.
4. The tunnel pavement structure using the wheel-free emulsified asphalt binder according to claim 1, wherein: the lower surface layer (3) adopts AC-13 asphalt mixture or AC-16 asphalt mixture.
5. The tunnel pavement structure using the wheel-free emulsified asphalt binder according to claim 1, wherein: the void ratio of the upper layer (1) is not more than 6%.
6. The tunnel pavement structure using the wheel-nonstick emulsified asphalt adhesion layer according to claim 1, wherein: in the wheel-sticking-free emulsified asphalt adhesive layer (2), the coating dosage of the wheel-sticking-free emulsified asphalt is 0.3kg/m 2 ~0.6kg/m 2 The demulsification speed type is a quick-cracking type, the demulsification hardening time is not more than 45 minutes, and the drawing bonding strength range is 0.8-0.95 MPa.
7. The tunnel pavement structure using the wheel-free emulsified asphalt binder according to claim 1, wherein: the thickness of the leveling layer (5) is more than 25 cm.
8. The tunnel pavement structure using the wheel-nonstick emulsified asphalt adhesion layer according to claim 1, wherein: the thickness of the pavement layer (4) is 25-30 cm.
9. The tunnel pavement structure using the wheel-free emulsified asphalt binder according to claim 1, wherein: the thickness of the lower surface layer (3) is 5-6 cm.
10. A tunnel pavement structure using a wheel-tack-free emulsified asphalt binder according to any one of claims 1 to 9, wherein: the SBS modified asphalt SMA-10 asphalt mixture upper surface layer (1) is an inclined surface layer, and a water collecting tank (6) is arranged on the outer side of the lower end of the upper surface layer (1).
CN202220149969.5U 2022-01-19 2022-01-19 Tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer Active CN217479871U (en)

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CN202220149969.5U CN217479871U (en) 2022-01-19 2022-01-19 Tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer

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Application Number Priority Date Filing Date Title
CN202220149969.5U CN217479871U (en) 2022-01-19 2022-01-19 Tunnel pavement structure using non-stick wheel emulsified asphalt adhesive layer

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CN217479871U true CN217479871U (en) 2022-09-23

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