CN220057523U - Curb back concrete reinforced structure - Google Patents

Abstract

The utility model relates to a curb back concrete reinforcing structure, which comprises a pavement base layer and a curb, wherein the pavement base layer sequentially comprises a graded broken stone layer cement stable graded broken stone layer, a slurry seal layer, a coarse-grain type common asphalt concrete layer, a middle-grain type common asphalt concrete layer and a fine-grain type modified asphalt concrete layer from bottom to top, a cement concrete base is arranged in the cement stable graded broken stone layer, a cement mortar sleeper is arranged on the cement mortar sleeper, the curb is connected with the cement stable graded broken stone layer, the slurry seal layer, the coarse-grain type common asphalt concrete layer, the middle-grain type common asphalt concrete layer and the fine-grain type modified asphalt concrete layer, the back of the curb is connected with the cement concrete base near the bottom, a filling layer is arranged on the back of the curb, and the filling layer is connected with the curb and the cement concrete base. The utility model can solve the problem that the external force of the wheels and the like can be extruded and bumped on one side of the curb facing the road surface for a long time, so that the curb is bent outwards.

Description

Curb back concrete reinforced structure

Technical Field

The utility model relates to the technical field of road construction, in particular to a curb back concrete reinforcing structure.

Background

The curb is a boundary stone arranged at the edge of a pavement and used for distinguishing a roadway, a sidewalk, a green land, a median and the like, and plays roles of guaranteeing pedestrians, vehicle traffic safety and guaranteeing the edge of the pavement to be neat.

In urban roads, the curb is usually installed on two sides of an asphalt road, and the local part of the curb is frequently outward-leaning, namely, the top of the curb is inclined to the side far away from the road, so that the reason for the occurrence of the situation is mostly that external forces such as wheels and the like are extruded on the side of the curb facing the road surface for a long time, and the curb is outward-leaning.

The outward elevation of the local curb damages the smoothness of the curb roof line, and simultaneously the pavement edge is more easily damaged.

Disclosure of Invention

In order to solve the problem that external forces such as wheels and the like are extruded on one side of the curb facing the road surface for a long time to cause outward pitching of local curb in the related art, the utility model provides a curb back concrete reinforcing structure.

The utility model provides a curb back concrete reinforcing structure, which adopts the following technical scheme:

the utility model provides a curb back concrete reinforced structure, includes road surface basic unit and assembles the curb at road surface basic unit side, the road surface basic unit is from supreme level of including level formula gravel layer, cement stability level formula gravel layer, slurry seal, coarse-grained formula ordinary asphalt concrete layer, well grain formula ordinary asphalt concrete layer and fine-grained modified asphalt concrete layer down in proper order, wherein, cement stability level formula gravel layer in situ is provided with cement concrete foundation, cement concrete foundation is provided with the cement mortar bedrock, the curb set up in the cement mortar bedrock, the curb with cement stability level formula gravel layer, slurry seal, coarse-grained formula ordinary asphalt concrete layer, well grain formula ordinary asphalt concrete layer and fine-grained modified asphalt concrete layer are connected, the back of curb be close to the bottom the position with cement concrete foundation is connected, the curb back is provided with the filling layer, the soil layer with curb and cement concrete foundation is connected.

By adopting the technical scheme, when the pavement base layer is paved to the cement stable graded broken stone layer, the curb can be installed. During installation, a cement concrete base is paved on the cement stable graded broken stone layer, then a cement mortar sleeper is paved on the cement concrete base, and then the curb is neatly placed on the cement mortar sleeper. The cement mortar is used for fixing the curb on the cement concrete base, and the cement concrete base plays a role in protection and reinforcement, so that the substrate of the curb is firmer, and meanwhile, the cement concrete base is bonded with the bottom of the back of the curb, so that the supporting force of the back of the curb is increased, and the curb is not easy to topple to one side far away from a road surface. After the curb is installed, paving pavement base layers one by one, wherein the pavement base layers are connected with the curb, so that the firmness of the curb can be improved. The back of the curb is provided with the filler layer, and the filler layer is connected with the curb and the cement concrete base, so that the supporting force of the back of the curb can be further increased, the follow-up curb is not easy to face outwards after being bumped by external force of wheels, smoothness of the curb along a stone roof line is facilitated and maintained, and the service life of a road surface is prolonged.

Preferably, the thickness of the cement mortar bedding ranges from 2cm to 4cm.

Through adopting above-mentioned technical scheme, cement mortar thickness is too high and too low can both influence the installation quality of curb, and cement mortar subsides the effect more obvious when too high, makes the curb appear highly inconsistent condition easily, and the fastness of curb is insufficient when too low, consequently 2cm to 4cm are the best.

Preferably, the connection area between the cement concrete base and the back of the curb is not less than 15% of the back area of the curb.

Through adopting above-mentioned technical scheme, the too little back area of being connected of mud concrete base and curb can lead to the holding power of curb back not enough, and the proportion of not less than 15% can guarantee better that the holding power of cement concrete base to the curb back is enough.

Preferably, the cement concrete base is a C15 cement concrete base.

Through adopting above-mentioned technical scheme, the intensity of C15 cement concrete is 15MPa, and this intensity is fit for structures that atress is not big such as bedrock, terrace, satisfies the installation demand of curb.

Preferably, the compactness of the filling layer is not lower than 87%, and one side, connected with the filling layer, of the cement concrete base is obliquely arranged.

By adopting the technical scheme, the inclined arrangement is beneficial to enabling soil and stones to fall into the bottom layer more uniformly during filling, so that the follow-up compaction treatment is facilitated. The compactness of the filling layer is not lower than 87%, so that the foundation is firm and solid, the sinking amount is reduced, and the supporting force of the filling layer on the back of the curb is larger.

Preferably, the ratio of the width of the bottom surface of the curb to the width of the bottom surface of the cement concrete foundation is 3:5.

By adopting the technical scheme, the cement concrete base can have better effect of fixing the curb.

Preferably, the filling layer is provided with a tree pool belt, one side of the filling layer, which is away from the pavement base layer, is provided with a green road base layer, and one side of the green road base layer, which is away from the filling layer, is provided with a pavement base layer.

Through adopting above-mentioned technical scheme, more make things convenient for the trip of vehicle and pedestrian, also beautified the road surface appearance simultaneously.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the concrete base and the filling layer are arranged on the curb back, so that the supporting force of the curb back is further increased, and the problem of outward leaning caused by long-term collision of external forces such as wheels is reduced;

2. the structure is simple to install and the applicability is higher.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a graph showing the matching relationship of the kerbs with the pavement base and the filling layer according to the embodiment of the present utility model.

FIG. 3 is a graph showing the relationship between the cement concrete pavement tooth and the green road base layer and the pavement base layer according to the embodiment of the utility model.

Reference numerals illustrate: 1. a pavement base layer; 101. grading the crushed stone layer; 102. a cement stable graded crushed stone layer; 1021. a 4% cement stabilized graded crushed stone layer; 1022. 5% cement stabilized graded crushed stone layer; 103. a slurry seal layer; 104. coarse-grain common asphalt concrete layer; 105. a medium-grain type common asphalt concrete layer; 106. a fine-grain modified asphalt concrete layer; 2. a curb; 3. a cement concrete base; 4. cement mortar bedding; 5. filling a soil layer; 6. tree pool belts; 7. a green road base layer; 701. grading a macadam base layer; 702. a strong water-permeable concrete plain layer; 703. color permeable concrete layer; 8. a pavement base layer; 801. a cement stabilized graded broken stone base layer; 802. a cement mortar cushion layer; 803. an environment-friendly water-permeable color brick layer; 9. an inclined plane; 10. cement concrete horizontal road tooth; 11. a cement mortar layer; 12. and (5) a concrete seat.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The utility model provides a curb back concrete reinforced structure, refer to fig. 1 and 2, including road surface basic unit 1 and the curb 2 of assembly in the road surface side, curb 2 is prefabricated C30 cement concrete curb 2, the straightway of road surface basic unit 1 adopts the square curb 2 of specification 49cm x 45cm x 15cm, road surface basic unit 1 is from bottom to top including the high level of 15cm grading gravel layer 101, 20cm 4% cement stable grading gravel layer 1021, 32cm 5% cement stable grading gravel layer 1022,0.8cm slurry seal 103, 7cm coarse-grained ordinary asphalt concrete layer 104, 5cm well granule ordinary asphalt concrete layer 105 and 4cm fine grain modified asphalt concrete layer 106 in proper order. Wherein, 4% cement stable graded broken stone layer 1021 surface is provided with prefabricated C15 cement concrete base 3, and cement concrete base 3 cross-section is "L" setting and is connected with 5% cement stable graded broken stone layer 1022.

Referring to fig. 2, in detail, the bottom surface of the cement concrete foundation 3 has a width of 25cm, the height of one surface connected to the 5% cement stabilized graded stone layer 1022 is 9cm, the width of the inner surface parallel to the bottom surface is 15cm, and the height of the inner surface perpendicular to the inner surface is 10cm. The inner side surface is provided with a 1:3 cement mortar sleeper 4 with the height of 3cm, the curb stone 2 is arranged on the cement mortar sleeper 4, and the bottom surface of the curb stone 2 is completely bonded with the cement mortar sleeper 4. Through setting up the specification of cement concrete base 3 like this, enable curb 2 to install on cement mortar bedrock 4 after, the internal surface of cement concrete base 3 just in time butt in the back of curb 2, play better supporting effect to the back of curb 2.

In the actual construction process, when the pavement base layer 1 is paved on the 4% cement stabilized graded broken stone layer 1021, the curb stone 2 can be installed. In the installation, the cement concrete base 3 is firstly installed on the 4% cement stabilized graded broken stone layer 1021, and then the cement mortar bed 4 is paved on the cement concrete base 3. It should be noted that when the cement mortar bedding 4 is paved, the cement mortar needs to be vibrated uniformly, so that the structure of the cement mortar bedding 4 is more compact, the subsequent situation that the curb 2 is settled can be reduced, and the curb 2 is more orderly. After the curb 2 is installed, other base layers of the pavement base layer 1 are paved, and all the other base layers paved later are connected with the curb 2. Namely, a 32cm 5% cement stabilized graded broken stone layer 1022, a 0.8cm slurry seal layer 103, a 7cm coarse-grain type ordinary asphalt concrete layer 104, a 5cm medium-grain type ordinary asphalt concrete layer 105 and a 4cm fine-grain type modified asphalt concrete layer 106 are sequentially paved on a 4% cement stabilized graded broken stone layer 1021 from bottom to top, and the pavement base layer 1 paved after the curb 2 is installed is connected with the curb 2.

Referring to fig. 2, the back of the curb 2 is provided with a filling layer 5, the filling layer 5 is connected with the back of the curb 2 and one side of the cement concrete foundation 3 facing away from the pavement base 1, and the surface of the filling layer 5 is leveled with the top surface of the curb 2. Through setting up the filler layer 5, can play the supporting role to the back of curb 2 and cement concrete base 3, when external force such as wheel bump into curb 2 for a long time, the filler layer 5 can support curb 2 better, makes it difficult to face upward outward. Meanwhile, the tree pool belt 6 can be arranged on the filling layer 5, so that the effects of beautifying the road surface and urban volume are achieved.

To further secure the stability of the pavement base 1, the degree of compaction of the 5% cement stabilized graded crushed stone layer 1022 is 98%, and the degree of compaction of the 4% cement stabilized graded crushed stone layer 1021 is 97%.

Further, in order to make the foundation of the filling layer 5 more firm, the filling layer 5 is compacted to a degree of compaction not less than 87%. For better compacting the filling layer 5, the surface, to which the cement concrete foundation 3 is connected with the filling layer 5, is provided with the inclined surface 9, so that the filling layer 5 can better move to the substrate of the filling layer 5 along the inclined surface 9 in the compacting process, the compaction is tighter, and meanwhile, the more compact the filling layer 5 is, the stronger the supporting effect on the back of the curb 2 is achieved.

Referring to fig. 3, a green road base layer 7 is disposed on a side of the filling layer 5 facing away from the road base layer 1, the green road base layer 7 sequentially comprises a soil base layer, a graded broken stone base layer 701 with a height of 15cm, a solid water-permeable concrete plain color layer 702 with a height of 8cm and a color water-permeable concrete layer 703 with a height of 4cm from bottom to top, and the surface of the color water-permeable concrete layer 703 is subjected to double-propyl polyurethane sealing treatment. A prefabricated C30 cement concrete horizontal curb 10 is buried between the green road base layer 7 and the filling layer 5, the specification of the prefabricated C30 cement concrete horizontal curb 10 is 49cm x 20cm x 10cm, and the top surface of the cement concrete horizontal curb 10 is leveled with the green road surface. The bottom of the cement concrete horizontal curb 10 is bonded on a prefabricated C15 concrete seat 12 through a 1:3 cement mortar layer 11, and the height of the cement mortar layer 11 is 3cm. The C15 concrete seat 12 is L-shaped, and the L-shaped inner surface of the C15 concrete seat 12 is abutted against the bottom surface and the back of the cement concrete pavement tooth 10.

The sidewalk base layer 8 is provided with one side of the sidewalk base layer 7, which is far away from the filling layer, and the sidewalk base layer 8 sequentially comprises a soil base layer, a 5% cement stabilized graded broken stone base layer 801 with the height of 18cm, a 1:3 cement mortar cushion layer 802 with the height of 3cm and a C30 environment-friendly water-permeable color brick layer 803 with the height of 6cm from top to bottom. A second cement concrete flat road tooth 10 and a second C15 concrete are buried between the pavement base layer 8 and the green pavement base layer 7, and the assembly mode of the second cement concrete flat road tooth 10 and the second C15 concrete and the buried depth are consistent with those of the cement concrete flat road tooth 10 and the C15 concrete.

The principle of the present embodiment is that the installation of the curb stone 2 can be started when the pavement base layer 1 is paved on the 4% cement stabilized graded broken stone layer 1021. In the installation, the cement concrete base 3 is firstly installed on the 4% cement stabilized graded broken stone layer 1021, then the cement mortar bed 4 is paved on the cement concrete base 3, and then the curb stone 2 is neatly placed on the cement mortar bed 4. After the back curb 2 is installed, the cement concrete base 3 is abutted with the bottom of the back of the curb 2, so that the supporting force of the cement concrete base 3 on the back of the curb 2 is increased, and the curb 2 is not easy to topple over to two sides of a road surface. After the curb 2 is installed, paving the pavement base layers 1 one by one, wherein the pavement base layers 1 are connected with the curb 2, so that the firmness of the curb 2 can be improved. The back of the curb 2 is provided with the filler layer 5, and the filler layer 5 is connected with the curb 2 and the cement concrete base 3, so that the supporting force to the back of the curb 2 can be further increased, the follow-up curb 2 is not easy to face outwards after being bumped by external force of wheels, smoothness of a curb roof line is facilitated and maintained, and the service life of a road surface is prolonged.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a curb back concrete reinforced structure, includes road surface basic unit (1) and assembles curb (2) at road surface basic unit (1) side, its characterized in that, road surface basic unit (1) from supreme gradation gravel layer (101), cement stable gradation gravel layer (102), slurry seal (103), coarse-grained formula ordinary asphalt concrete layer (104), well granule formula ordinary asphalt concrete layer (105) and fine grain formula modified asphalt concrete layer (106) of including in proper order down, wherein, be provided with cement concrete base (3) in cement stable gradation gravel layer (102), cement concrete base (3) are provided with cement mortar bedrock (4), curb (2) set up in cement mortar bedrock (4), curb (2) with cement stable gradation gravel layer (102), slurry (103), coarse-grained formula ordinary asphalt concrete layer (104), well granule formula ordinary asphalt concrete layer (105) and fine grain formula modified asphalt concrete layer (106) are connected, back position and the cement base (2) of cement base (3) are connected with curb (5).

2. A curb back concrete reinforcing structure according to claim 1, characterized in that the thickness of the cement mortar bed (4) ranges from 2cm to 4cm.

3. A curb back concrete reinforcing structure according to claim 1, characterized in that the area of the connection of the cement concrete foundation (3) to the back of the curb (2) is greater than or equal to 15% of the back area of the curb (2).

4. A curb back concrete reinforcing structure according to claim 1, characterized in that the cement concrete foundation (3) is a C15 cement concrete foundation.

5. A curb back concrete reinforcing structure according to claim 1, characterized in that the degree of compaction of the filling layer (5) is not lower than 87%.

6. A curb back concrete reinforcing structure according to claim 5, wherein the side of the cement concrete foundation (3) connected to the filling layer (5) is arranged obliquely.

7. A curb back concrete reinforcing structure according to claim 6, wherein the ratio of the bottom width of the curb (2) to the bottom width of the cement concrete foundation (3) is 3:5.

8. A curb back concrete reinforcing structure according to claim 6, characterized in that the filling layer (5) is provided with a tree pool belt (6) and that the side of the filling layer (5) facing away from the road surface base layer (1) is provided with a green road base layer (7), and that the side of the green road base layer (7) facing away from the filling layer (5) is provided with a pavement base layer (8).