CN218643105U - Thin asphalt concrete pavement - Google Patents

Thin asphalt concrete pavement Download PDF

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Publication number
CN218643105U
CN218643105U CN202223097197.4U CN202223097197U CN218643105U CN 218643105 U CN218643105 U CN 218643105U CN 202223097197 U CN202223097197 U CN 202223097197U CN 218643105 U CN218643105 U CN 218643105U
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China
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waterproof
section
layer
drainage
asphalt
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CN202223097197.4U
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Chinese (zh)
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段春云
冯艳
王虎
高连杰
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Hubei Ruizhi Construction Engineering Co ltd
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Hubei Ruizhi Construction Engineering Co ltd
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Abstract

The utility model relates to a slim asphalt concrete pavement relates to the technical field of concrete pavement, and it includes the road bed and from up laying in proper order down plain soil layer, metalling and the concrete layer on the road bed, the waterproof board has still been laid on the concrete layer, the waterproof board upper berth is equipped with combination pitch layer, combination pitch layer contains the waterproof section that is located the road surface middle part and is located the drainage section of waterproof section both sides, waterproof section is laid by modified waterproof asphalt and is formed, the drainage section is laid by the pitch that permeates water and is formed, drainage section bottom is equipped with drainage piece. This application has the effect that can guarantee road surface intensity when promoting slim asphalt concrete road surface waterproof performance.

Description

Thin asphalt concrete pavement
Technical Field
The application relates to the field of concrete pavements, in particular to a thin asphalt concrete pavement.
Background
The thin asphalt concrete pavement is a thin pavement with an asphalt mixture as a surface layer, and in recent years, the thin asphalt concrete pavement is widely applied to most roads in China by virtue of the advantages of high pavement strength, strong bearing capacity, good stability, thin asphalt layer, low engineering cost and the like. Traditional slim asphalt concrete pavement includes the basic unit and from supreme plain soil layer, metalling, concrete layer and the pitch layer of laying in proper order on the basic unit down, and the pitch layer generally comprises the pitch that permeates water. When rainwater weather, the rainwater on the road surface can see through the asphalt layer and infiltrate down to the flow through concrete layer, metalling and plain soil layer, easily leads to metalling and plain soil layer to run off, and long-term loss can lead to whole road surface to warp.
In order to improve the loss of the gravel layer and the plain soil layer caused by rainwater seepage, chinese patent document with the publication number of CN216193718U discloses a thin asphalt concrete pavement, and the key points of the technical scheme are as follows: the road bed and from bottom to top lay plain soil layer, metalling, concrete layer, waterproof layer and the pitch layer on the road bed in proper order, the waterproof layer is laid by modified waterproof asphalt and is constituted. The cross section of the top of the waterproof layer is arched, when the waterproof layer is used, rainwater penetrates through the asphalt layer and then is blocked by the waterproof layer, and due to the fact that the cross section of the top of the waterproof layer is arched, rainwater can flow from the middle of the waterproof layer to the two sides of the waterproof layer and flow to the two sides of a road surface, and contact of the rainwater with a concrete layer, a gravel layer and a plain soil layer is avoided.
To the correlation technique among the above-mentioned, because the setting of waterproof layer for the pitch layer is in full water state for a long time at the drainage relatively slowly after absorbing the rainwater, when bearing higher driving load effect, appears the infiltration and emits thick liquid phenomenon easily, leads to the durability to receive the influence.
SUMMERY OF THE UTILITY MODEL
In order to guarantee the road surface durability when can promote thin asphalt concrete pavement waterproof performance, the application provides a thin asphalt concrete pavement.
The application provides a thin asphalt concrete pavement adopts following technical scheme:
the utility model provides a slim asphalt concrete pavement, includes the road bed and from up laying in proper order down plain soil layer, metalling and the concrete layer on the road bed, the waterproof board has still been laid on the concrete layer, the waterproof board upper berth is equipped with the combination pitch layer, the combination pitch layer contains the waterproof section that is located the road surface middle part and is located the drainage section of waterproof section both sides, waterproof section is laid by modified waterproof asphalt and is formed, the drainage section is laid by the pitch that permeates water and is formed, drainage section bottom is equipped with drainage member.
By adopting the technical scheme, the middle part of the pavement with higher driving load is paved with the modified waterproof asphalt to form the waterproof section, so that rainwater is not easy to permeate into the pavement, the effect of improving the durability is achieved by enhancing the waterproof performance of the pavement, and the strength of the vehicle passing section in the middle of the pavement is ensured; however, the waterproof section is arranged to enable water to be accumulated on two sides of the road surface more easily in the rainy days, the vehicles on two sides of the road surface are less in traffic use and low in borne driving load, and therefore the permeable asphalt is paved on two sides of the waterproof section to form the drainage section, the drainage part is arranged at the bottom of the drainage section, rainwater can seep downwards through the permeable asphalt and is drained away by the drainage part, water accumulation on two sides of the road is effectively avoided, and the seeped rainwater cannot seep into structural layers such as lower-layer concrete under the separation of the waterproof board, and the overall waterproof performance of the road surface is also guaranteed. This application adopts modified waterproof asphalt and the pitch that permeates water to lay jointly and form the combination pitch layer according to the driving load that road surface in-service bore, has guaranteed the durability on road surface when promoting slim asphalt concrete pavement waterproof performance.
Optionally, a gap is arranged between the two sides of the waterproof board and the boundary of the road surface, the drainage piece is a square conduit, the square conduit is arranged in the gap, openings are arranged on the surface of the square conduit at intervals, and a water permeable filter screen is arranged at the openings.
Through adopting above-mentioned technical scheme, the setting in clearance is convenient for during seepage flow to the rainwater of waterproof board department flows to square pipe along the waterproof board, and square pipe also more circular pipe changes the rainwater of coming to the waterproof board water conservancy diversion and collects, and the setting of the filter screen that permeates water can make the rainwater can flow in square pipe, has also avoided pitch raw materials infiltration to block up square pipe when the pitch that permeates water is laid.
Optionally, the position of the upper surface of the waterproof board corresponding to the drainage section is provided with an inclined surface, the inclined surface is inclined and downwards arranged from the junction side of the waterproof section and the drainage section to the side close to the square conduit, and the top wall of the square conduit is not higher than the lowest point of the inclined surface.
Through adopting above-mentioned technical scheme, set up the inclined plane towards square pipe roof on the waterproof board to guide the rainwater of infiltration can flow in square pipeline fast, can not only accelerate the drainage, reduce the possibility of road both sides ponding, also help preventing because the rainwater is detained in the pitch water damage that permeates water and arouse in the pitch, promote the durability of drainage section.
Optionally, the drainage section with stable rubble layer has all been laid between square pipe roof and the inclined plane, stable rubble layer top surface with the interface parallel and level of waterproof board and waterproof section.
Through adopting above-mentioned technical scheme, support the pitch that permeates water by stabilizing the rubble layer, not only make the pitch layer more firm, the rainwater of being convenient for moreover in time passes the gap infiltration downwards between the rubble, helps reducing the contact time of rainwater and the pitch that permeates water, further reduces the possibility of the pitch water damage that permeates water.
Optionally, support partition plates are arranged in the stabilized macadam layer at intervals along the length direction of the road surface.
Through adopting above-mentioned technical scheme, help guaranteeing that rubble distributes evenly in the rubble layer, avoid the rubble layer cavity that arouses because of the long-time erodeing of rainwater, guarantee to stabilize the supporting role of rubble layer to the drainage section.
Optionally, adjacent support partitions are connected by a connecting rod.
By adopting the technical scheme, the supporting partition plates arranged at intervals are changed from single stress into integral stress, and the supporting effect of the stable gravel layer on the pervious asphalt is further improved.
Optionally, a plurality of through holes are distributed on the supporting partition plate.
By adopting the technical scheme, rainwater between different partition plates can flow mutually, and the drainage rate of the section with easy accumulated water is promoted. Optionally, a one-way permeation plate is arranged between the drainage section and the waterproof section.
Through adopting above-mentioned technical scheme, the setting up of one-way infiltration board makes a small amount of rainwater in the waterproof section can permeate to the drainage section and then discharge, make when there is a small amount of rainwater infiltration waterproof section in some torrential rain weather, the rainwater of infiltration can in time be discharged, avoid saving the rainwater in the waterproof section, guarantee modified waterproof asphalt's safe in utilization, and owing to the one-way infiltration board of adoption, also can carry out the separation to the rainwater in the drainage section, avoid the rainwater to reverse the infiltration waterproof section, waterproof asphalt's safety in utilization has further been guaranteed. The service life of the waterproof section is prolonged.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the waterproof section and the drainage section which have different characteristics are paved on the pavement in different areas, and a waterproof layer and a drainage piece are matched, so that the waterproof performance of the thin asphalt concrete pavement is improved while the strength of the pavement is not influenced;
2. the drainage section is internally provided with the square guide pipe and the inclined waterproof plate matched with the square guide pipe, so that rainwater can quickly flow into the square guide pipe, and the subsequent centralized drainage is facilitated;
3. set up one-way infiltration board in waterproof section and drainage section, effectively avoid the rainwater infiltration waterproof section in the drainage section, can make the rainwater infiltration drainage section in the waterproof section simultaneously, help promoting the life of waterproof section.
Drawings
FIG. 1 is a cross-sectional view of a thin asphalt concrete pavement according to an embodiment of the present application;
FIG. 2 is a top plan view of the thin asphalt concrete pavement of FIG. 1 prior to filling with gravel in the stabilized gravel layer;
in the figure, 1, a road bed; 11. a plain soil layer; 12. a crushed stone layer; 13. a concrete layer; 2. a waterproof sheet; 3. combining the asphalt layers; 31. a waterproof section; 32. a drainage section; 321. a square conduit; 322. a water permeable filter screen; 33. a unidirectional osmosis plate; 4. stabilizing the crushed stone layer; 41. supporting the partition plate; 411. a through hole; 42. a connecting rod.
Detailed Description
The present application is described in further detail below with reference to fig. 1-2.
The embodiment of the application discloses a thin asphalt concrete pavement, and referring to fig. 1 and fig. 2, the thin asphalt concrete pavement comprises a road bed 1, a plain soil layer 11, a gravel layer 12, a concrete layer 13, a waterproof board 2 and a combined asphalt layer 3 on the uppermost layer, wherein the plain soil layer 11, the gravel layer 12, the concrete layer 13, the waterproof board 2 and the combined asphalt layer 3 are sequentially paved on the road bed 1 from bottom to top; the drainage section 32 is formed by paving permeable asphalt, rainwater is effectively prevented from being accumulated on two sides of the road by the drainage section 32, and the waterproof plate 2 prevents the infiltrated rainwater from contacting with the underlying foundation structure layer, so that the waterproof performance of the road surface is improved; although the waterproof section 31 can greatly reduce the possibility that rainwater permeates the section, rainwater in the drainage section 32 can permeate the waterproof section 31 in use, so that the unidirectional penetration plate 33 is further inserted between the waterproof section 31 and the drainage section 32 to prevent rainwater in the drainage section 32 from entering the waterproof section 31, and meanwhile, after a small amount of rainwater permeates the waterproof section 31, the rainwater can also enter the drainage plate through the unidirectional penetration plate 33 to flow away, so that the water damage of rainwater accumulated in the waterproof section 31 to the modified waterproof asphalt is effectively reduced, and the service life of the waterproof section 31 is prolonged. In order to prevent rainwater from accumulating in the permeable asphalt for a long time, the bottom of the drainage section 32 is also provided with a drainage piece, a gap is arranged between the two sides of the waterproof board 2 and the boundary of the road surface, in the embodiment, the drainage piece is specifically set to be a square conduit 321 positioned in the gap, the square conduit 321 is provided with openings at intervals, and the openings are provided with permeable filter screens 322, so that the blockage caused by the fact that large impurities enter the conduit is effectively prevented; the square pipe 321 may be connected to other municipal drainage systems for subsequent centralized drainage.
In order to further accelerate the speed of rainwater flowing into the square conduit 321 and reduce water accumulated on two sides of the road surface, the upper surface of the waterproof board 2 is provided with an inclined surface corresponding to the drainage section 32, and the inclined surface inclines downwards from the boundary side of the waterproof section 31 and the drainage section 32 to one side of the square conduit 321 and is welded with one side of the top wall of the square conduit 321. Through the setting on inclined plane, make the rainwater flow in square pipe 321 more fast, prevent effectively that the rainwater from stopping for a long time and leading to the water to permeate water the pitch water damage in permeating water pitch.
Referring to fig. 1 and 2, in order to improve the stability of the permeable asphalt, a stabilizing gravel layer 4 is laid on the upper surface of the square conduit 321 and the inclined surface of the waterproof board 2, and the top surface of the stabilizing gravel layer 4 is flush with the interface between the waterproof board 2 and the waterproof section 31, so as to support the permeable asphalt above. In long-term use, irregular displacement may occur to the broken stone after repeated rainwater infiltration and scouring, so that the supporting force for the pervious asphalt is uneven, and the condition of pavement collapse occurs. Therefore, the supporting partition plates 41 with the through holes 411 are arranged in the stable gravel layer 4 at intervals along the length direction of the road surface, so that the broken stones in the stable gravel layer 4 can be locally fixed while rainwater can mutually circulate in the stable gravel layer 4, and the possibility of transition displacement in the stable gravel layer 4 is reduced. And the connecting rods 42 are welded between the adjacent supporting partition plates 41, so that the supporting partition plates 41 arranged at intervals are changed from single stress into integral stress, and the supporting effect of the stable gravel layer 4 on the pervious asphalt is further improved.
The implementation principle of the embodiment of the application is as follows: in actual construction work, the plain soil layer 11, the gravel layer 12, and the concrete layer 13 are laid on the road bed 1 in this order. Lay waterproof board 2 that has the inclined plane above concrete layer 13, waterproof board 2 reserves the clearance with the road both sides, then inlays the square pipe 321 that has interval open-ended on the roof and establishes in the clearance, sets up the filter screen 322 that permeates water at square pipe 321 opening part, square pipe 321 roof one side and the inclined plane minimum butt of waterproof board 2, and it has waterproof asphalt cement to fill in the gap between square pipe 321 and waterproof board 2. Support baffles 41 with through holes 411 are arranged at intervals in the square pipeline, and adjacent baffles are connected through connecting rods 42 which are connected with the baffles through threads. The top of the supporting spacer 41 is flush with the top of the flashing 2. After the supporting partition plates 41 are arranged, the gaps among the supporting partition plates 41 are filled with broken stones to form the stable gravel layer 4, and the top surfaces of the stable gravel layer 4 are flush with the upper surface of the waterproof board 2. Then the SBS modified waterproof asphalt is laid on the waterproof board 2, the one-way penetration board 33 is additionally arranged on the two sides of the SBS modified waterproof asphalt, and finally the permeable asphalt is laid on the stable rubble layer 4, so that the construction of the thin asphalt concrete pavement is completed.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a slim asphalt concrete road surface, includes roadbed (1) and from up laying in proper order down plain soil layer (11), metalling (12) and concrete layer (13) on roadbed (1), a serial communication port, waterproof board (2) have still been laid on concrete layer (13), waterproof board (2) upper berth is equipped with combination pitch layer (3), combination pitch layer (3) contain waterproof section (31) that are located the road surface middle part and drainage section (32) that are located waterproof section (31) both sides, waterproof section (31) are laid by modified waterproof asphalt and are formed, drainage section (32) are laid by permeable asphalt and form, drainage section (32) bottom is equipped with the drain.
2. A thin asphalt concrete pavement according to claim 1, wherein gaps are provided between two sides of the waterproof board (2) and the pavement boundary, the drainage member is a square conduit (321), the square conduit (321) is disposed in the gaps, openings are spaced on the surface of the square conduit (321), and the openings are provided with water permeable screens (322).
3. The thin asphalt concrete pavement according to claim 2, wherein the upper surface of the waterproof board (2) is provided with an inclined surface corresponding to the drainage section (32), the inclined surface is arranged from the side where the waterproof section (31) and the drainage section (32) are connected to the side close to the square conduit (321) in an inclined and downward manner, and the top wall of the square conduit (321) is not higher than the lowest point of the inclined surface.
4. A low-profile asphalt concrete pavement according to claim 3, wherein a stable gravel layer (4) is laid between the top wall and the inclined surface of the drainage section (32) and the square conduit (321), and the top surface of the stable gravel layer (4) is flush with the interface between the waterproof board (2) and the waterproof section (31).
5. A low-profile asphalt concrete pavement according to claim 4, wherein the stabilized gravel layer (4) is provided with supporting partitions (41) at intervals along the length of the pavement.
6. A thin asphalt concrete pavement according to claim 5, wherein the adjacent supporting partitions (41) are connected by connecting rods (42).
7. A thin asphalt pavement according to claim 5, wherein a plurality of through holes (411) are arranged on the supporting partition (41).
8. A thin asphalt concrete pavement according to claim 1, wherein a one-way permeable board (33) is arranged between the drainage section (32) and the waterproof section (31).
CN202223097197.4U 2022-11-19 2022-11-19 Thin asphalt concrete pavement Active CN218643105U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223097197.4U CN218643105U (en) 2022-11-19 2022-11-19 Thin asphalt concrete pavement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223097197.4U CN218643105U (en) 2022-11-19 2022-11-19 Thin asphalt concrete pavement

Publications (1)

Publication Number Publication Date
CN218643105U true CN218643105U (en) 2023-03-17

Family

ID=85499582

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223097197.4U Active CN218643105U (en) 2022-11-19 2022-11-19 Thin asphalt concrete pavement

Country Status (1)

Country Link
CN (1) CN218643105U (en)

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