A tough structure of cement concrete pavement
By using the method of connecting structure and asphalt covering on cement concrete pavement, the problems of old pavement breakage and reflective cracks are solved, and efficient and environmentally friendly pavement transformation and service life are achieved.
Patent Information
- Application Number
- CN202421106748.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The existing cement concrete pavement needs to be broken during repair, which violates the concept of low-carbon environmental protection. Reflective cracks are easily generated after the asphalt surface is laid, affecting the performance and service life of the road.
The old pavement structural units are connected to each other or connected to the new pavement structural units, and the overall surface is covered with asphalt, and the tie rod and limit rod are installed to enhance the connection.
The pavement renovation is achieved without breaking old cement concrete, which enhances pavement connectivity, extends the pavement service life, and improves pavement toughness.
Smart Images
Figure CN222730269U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of construction, and specifically relates to a tough structure of a cement concrete pavement. Background Art
[0002] my country has started to build cement concrete pavements on a large scale since the early 1980s. However, due to design, construction, and later maintenance, a considerable portion of the pavement has been damaged, affecting the performance of the road.
[0003] In recent years, various regions have carried out a large number of repairs and renovations on old cement concrete pavements. The main measure is to crush the old cement concrete slabs and lay asphalt concrete pavement on them to improve the performance of the original cement concrete pavement. However, the crushing of old cement concrete is a large project, which does not conform to the low-carbon and environmental protection concept. At the same time, after laying the asphalt surface layer, due to the existence of original joints and crack defects in the old cement concrete slabs in the structure, reflective cracks are very easy to occur under the action of external loads, which seriously restricts the road performance and service life of the asphalt overlay layer, and the pavement toughness is insufficient. Utility Model Content
[0004] The purpose of this application is to address the shortcomings of the prior art and to design a cement concrete pavement toughness structure by using a connecting structure to connect old pavement structure units that can be connected to each other and / or to connect old pavement structure units that can be connected to new pavement structure units. This solves the problem of how to convert white to black on the pavement without crushing the old cement concrete and without restricting the road performance and service life of the asphalt overlay layer and the toughness of the pavement.
[0005] To achieve the above purpose, the technical solution of the utility model is:
[0006] A cement concrete pavement toughness structure comprises an old pavement structure unit, a new pavement structure unit, a connection structure and asphalt. The connection structure connects adjacent old pavement structure units together, and / or the connection structure connects adjacent old pavement structure units with new pavement structure units. The asphalt covers the surface of the connected old pavement structure units or the surface of the whole composed of the connected old pavement structure units and the new pavement structure units.
[0007] Preferably, the surface of the old pavement structure unit is smooth and complete, without sinking, and the area of the upper surface is greater than 3 square meters.
[0008] Preferably, when the connection structure connects adjacent old pavement structure units together, the connection structure is an anti-cracking sticker.
[0009] Preferably, when the connection structure connects adjacent old pavement structure units with new pavement structure units, the connection structure is a tie rod.
[0010] Preferably, the surface of the pull rod is coated with asphalt.
[0011] Preferably, the new pavement structure unit is soft concrete.
[0012] Preferably, the old pavement structure unit is provided with a first hole and a second hole, the axis of the first hole is perpendicular to the surface of the old pavement structure unit and the upper end of the first hole extends to the surface of the old pavement structure unit, the axis of the second hole is parallel to the surface of the old pavement structure unit, the two ends of the first hole pass through the two ends of the second hole, two insertion holes are radially provided between the two ends of the pull rod, the axes of the two insertion holes are parallel to each other, one end of the pull rod extends into the second hole of the old pavement structure unit, and the other end extends into the new pavement structure unit, a limit rod is inserted into the first hole of one of the old pavement structure units and then passes through one of the insertion holes, and the other limit rod is inserted into the new pavement structure unit and passes through the other insertion hole between the two ends.
[0013] Preferably, graded gravel is provided below the new pavement structure unit, the new pavement structure unit is located on the graded gravel, anti-cracking stickers are affixed to the connection between the surface of the new pavement structure unit and the surface of the old pavement structure unit that are connected to each other, the asphalt is located on the surface of the whole composed of the new pavement structure unit and the old pavement structure unit, and the asphalt covers the anti-cracking stickers.
[0014] Compared with the prior art, the beneficial effects of this application are:
[0015] 1. The present application designs a cement concrete pavement toughness structure by adopting a connection structure to connect the old pavement structure units that can be connected to each other and / or connect the old pavement structure units that can be connected to the new pavement structure units, and solves the problem of how to change the white pavement to black without crushing the old cement concrete and without restricting the road performance and service life of the asphalt overlay layer and the toughness of the pavement.
[0016] 2. In this application, pull rods and limit rods are provided to enhance the connectivity between the two pavement structure units. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the structure connecting two old pavement structure units;
[0018] Figure 2 It is a schematic diagram of the connection between the old pavement structure unit and the new pavement structure unit;
[0019] Figure 3 It is a schematic diagram of the connection between the old pavement structure unit and the new pavement structure unit when the pavement is widened;
[0020] Figure 4 for Figure 3 The enlarged view of point A in the middle;
[0021] Figure 5 A schematic diagram of the first hole and the second hole on the old pavement structure unit;
[0022] Figure 6 Schematic diagram of the pull rod.
[0023] Among them, 1. Old pavement structure unit; 2. New pavement structure unit; 3. Asphalt; 4. Anti-cracking sticker; 5. First hole; 6. Second hole; 7. Insertion hole; 8. Pull rod; 9. Limit rod; 10. Graded gravel. DETAILED DESCRIPTION
[0024] like Figure 1-6 As shown, a cement concrete pavement toughness structure includes an old pavement structure unit 1, a new pavement structure unit 2, a connecting structure, and asphalt 3. The connecting structure connects adjacent old pavement structure units 1 together, and / or the connecting structure connects adjacent old pavement structure units 1 and new pavement structure units 2 together, and the asphalt 3 covers the surface of the connected old pavement structure units 1 or the surface of the whole composed of the connected old pavement structure units 1 and the new pavement structure units 2.
[0025] In this embodiment, the production can be carried out according to the following steps:
[0026] 1) Determine the old pavement structure units 1 that can be connected together on the old cement concrete pavement;
[0027] 2) If there is an old pavement structure unit 1 that cannot be connected between the old pavement structure units 1 that can be connected together, the pavement structure unit 1 that cannot be connected is dug out; if there is no old pavement structure unit 1 that cannot be connected between the old pavement structure units 1 that can be connected together, the pavement structure units 1 that can be connected together are connected together using a connecting structure;
[0028] 3) Coating asphalt 3 on the surface of the whole formed by all the old pavement structure units 1 connected together in step 2).
[0029] As a preferred method, the surface of the pavement structure units 1 that can be connected together is smooth and complete, has no sinking, and has an upper surface area greater than 3 square meters, so as to ensure that the pavement structure units 1 are necessary for connection.
[0030] As a preferred method, when there are only cracks between the pavement structure units 1 that can be connected together and there are no other pavement structure units 1 that cannot be connected, that is, when there are cracks 13 on the old pavement, the connection structure is an anti-crack sticker 8.
[0031] As a preferred method, when the connecting structure connects adjacent old pavement structure units 1 with new pavement structure units 2, the connecting structure is a tie rod 8, that is, if there is an old pavement structure that cannot be connected between the two old pavement structure units 1, the new pavement structure unit 2 is placed between the two old pavement structure units 1, and then the new pavement structure unit 2 is connected to the old pavement structure unit 1 through the tie rod 8.
[0032] As a preferred method, when connected, the new pavement structure unit 2 is soft concrete; that is, the new pavement structure unit 2 is soft, unsolidified concrete when connected to the old pavement structure unit 1, and then the new pavement structure unit 2 will automatically solidify.
[0033] As a preferred embodiment, the surface of the pull rod 8 is coated with asphalt 3. This provides a better connection effect.
[0034] As a preferred mode, the old pavement structure unit 1 is provided with a first hole 5 and a second hole 6, the axis of the first hole 5 is perpendicular to the surface of the old pavement structure unit 1 and the upper end of the first hole 5 extends to the surface of the old pavement structure unit 1, the axis of the second hole 6 is parallel to the surface of the old pavement structure unit 1, the two ends of the first hole 5 pass through the two ends of the second hole 6, two insertion holes 7 are radially provided between the two ends of the tie rod 8, the axes of the two insertion holes 7 are parallel to each other, one end of the tie rod 8 extends into the second hole 6 of the old pavement structure unit 1, and the other end extends into the new pavement structure unit 2, a limiting rod 9 is inserted into the first hole 5 of one of the old pavement structure units 1 and then passes through one of the insertion holes 7, and another limiting rod 9 is inserted into the new pavement structure unit and passes through another insertion hole 7 between the two ends. After the limiting rod 5 is provided in this way, the connection between the two connected old pavement structure units 1 or between the connected old pavement structure unit 1 and the new pavement structure unit 2 is more firmly established.
[0035] As a preferred method, when the old cement concrete pavement needs to be widened, the entire old cement concrete pavement is a connectable pavement structure unit 1, and another connectable pavement structure 1 is constructed on one side of the connectable pavement structure unit 1, and a graded gravel 10 is provided below the new pavement structure unit 2, and the new pavement structure unit 2 is located on the graded gravel 10, and an anti-cracking sticker 4 is affixed to the connection between the surface of the interconnected new pavement structure unit 2 and the surface of the old pavement structure unit 1, and the asphalt 3 is located on the surface of the whole composed of the new pavement structure unit 2 and the old pavement structure unit 1, and the asphalt 3 covers the anti-cracking sticker 4.
Claims
1. A cement concrete pavement toughness structure, characterized in that: The invention comprises an old pavement structure unit (1), a new pavement structure unit (2), a connection structure, and asphalt (3), wherein the connection structure connects adjacent old pavement structure units (1) together, and / or the connection structure connects adjacent old pavement structure units (1) and new pavement structure units (2) together, and the asphalt (3) covers the surface of the connected old pavement structure units (1) or the surface of the whole composed of the connected old pavement structure units (1) and the new pavement structure units (2).
2. A cement concrete pavement toughness structure according to claim 1, characterized in that: The surface of the old pavement structure unit (1) is smooth and complete, has no subsidence, and has an upper surface area greater than 3 square meters.
3. The cement concrete pavement toughness structure according to claim 1, characterized in that: When the connection structure connects adjacent old pavement structure units (1) together, the connection structure is an anti-cracking patch (4).
4. The cement concrete pavement toughness structure according to claim 1, characterized in that: When the connection structure connects adjacent old pavement structure units (1) and new pavement structure units (2), the connection structure is a tie rod (8).
5. A cement concrete pavement toughness structure according to claim 4, characterized in that: The surface of the pull rod (8) is coated with asphalt (3).
6. A cement concrete pavement toughness structure according to claim 4, characterized in that: The new pavement structure unit (2) is soft concrete.
7. A cement concrete pavement toughness structure according to claim 6, characterized in that: The old pavement structure unit (1) is provided with a first hole (5) and a second hole (6), the axis of the first hole (5) is perpendicular to the surface of the old pavement structure unit (1) and the upper end of the first hole (5) extends to the surface of the old pavement structure unit (1), the axis of the second hole (6) is parallel to the surface of the old pavement structure unit (1), the two ends of the first hole (5) pass through the two ends of the second hole (6), two insertion holes (7) are radially provided between the two ends of the pull rod (8), the axes of the two insertion holes (7) are parallel to each other, one end of the pull rod (8) extends into the second hole (6) of the old pavement structure unit (1), and the other end extends into the new pavement structure unit (2), a limiting rod (9) is inserted into the first hole (5) of one of the old pavement structure units (1) and then passes through one of the insertion holes (7), and another limiting rod (9) is inserted into the new pavement structure unit and passes through the other insertion hole (7) between the two ends.
8. The cement concrete pavement toughness structure according to claim 7, characterized in that: A graded crushed stone (10) is provided below the new pavement structure unit (2), the new pavement structure unit (2) is located on the graded crushed stone (10), an anti-cracking sticker (4) is affixed to the connection between the surface of the new pavement structure unit (2) and the surface of the old pavement structure unit (1), the asphalt (3) is located on the surface of the whole formed by the new pavement structure unit (2) and the old pavement structure unit (1), and the asphalt (3) covers the anti-cracking sticker (4).