New and old asphalt pavement lap joint structure and construction method

Abstract

The invention discloses a new and old asphalt pavement lap joint structure, and relates to the technical field of urban road traffic engineering construction.The new and old asphalt pavement lap joint structure comprises an old pavement, a new pavement is arranged on one side of the old pavement, and a connecting assembly is arranged between the old pavement and the new pavement; the connecting assembly comprises an inverted triangular pyramid soft inserting block, the inverted triangular pyramid soft inserting block is inserted between the old road surface and the new road surface, a fixed inserting needle is arranged on the inverted triangular pyramid soft inserting block, the fixed inserting needle is arranged on the side face of the inverted triangular pyramid soft inserting block, and a pressing soft plate is arranged on the inverted triangular pyramid soft inserting block; the two ends of the press-fit soft plate are connected with the end face corner angles of the old pavement and the new pavement respectively, and an anti-cracking soft plate is arranged on the upper portion of the press-fit plate. Due to the design of the inner inverted triangular pyramid soft insertion block, the inner inverted triangular pyramid soft insertion block can be tightly inserted into a gap between an old pavement and a new pavement, the gap is effectively sealed, the integrity and stability of the pavement structure are enhanced, and meanwhile, due to the arrangement of the expansion piece, the connection between the new pavement and the old pavement is firmer through filling and expansion of expansion glue.

Description

Technical Field

[0001] The invention relates to the technical field of urban road traffic engineering construction, in particular to a new and old asphalt pavement overlap structure and a construction method. Background Art

[0002] With the development of social economy, the traffic volume of urban roads is increasing day by day. The traffic volume of some urban roads has reached saturation and the congestion is serious. In order to solve this problem, widening urban roads is an economical and effective way. Urban road widening is to lay new asphalt pavement and then splice and overlap it with the old asphalt pavement. In the existing technology, the overlap of new and old asphalt pavements is simply overlapped with asphalt. This overlap method can easily cause the overlap to be concave or convex, resulting in poor overlap effect and affecting the later use of urban roads.

[0003] Therefore, it is necessary to propose a new and old asphalt pavement overlap structure and a construction method to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a new and old asphalt pavement overlap structure and a construction method to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: A new and old asphalt pavement overlap structure, comprising an old pavement, a new pavement is arranged on one side of the old pavement, and a connecting component is arranged between the old pavement and the new pavement; the connecting component comprises an inverted triangular pyramid soft plug block, the inverted triangular pyramid soft plug block is inserted between the old pavement and the new pavement, a fixed plug pin is arranged on the inverted triangular pyramid soft plug block, the fixed plug pin is arranged on the side of the inverted triangular pyramid soft plug block, a pressed soft plate is arranged on the inverted triangular pyramid soft plug block, two ends of the pressed soft plate are respectively connected to the end face corners of the old pavement and the new pavement, and an anti-cracking soft plate is arranged on the upper part of the pressed plate In the overlapping structure of the new and old asphalt pavement as described above, the upper parts of the old pavement and the new pavement are both provided with mounting embedding grooves, and the two ends of the anti-cracking soft plate are respectively connected to the mounting embedding grooves on the old pavement and the new pavement.

[0006] In the overlapping structure of a new and old asphalt pavement as described above, the plane where the pressed soft plate is located in the original state is higher than the planes where the old pavement and the new pavement are located.

[0007] In the overlapping structure of a new and old asphalt pavement as described above, the plane where the anti-cracking soft plate is located is parallel to the plane where the pressed soft plate is located.

[0008] In the above-mentioned overlapping structure of a new and old asphalt pavement, concrete sand and gravel are arranged inside the inverted triangular pyramid soft plug block.

[0009] In the overlapping structure of a new and old asphalt pavement as described above, expansion pieces are provided at the lower parts of the old pavement and the new pavement.

[0010] As described above, in a new and old asphalt pavement overlap structure, the expansion part includes an expansion hose, which is arranged at the lower part of the old pavement and the new pavement, an expansion chamber is provided on the top of the expansion hose, an expansion head is provided in the expansion chamber, a puncture needle is provided in the expansion head, an expansion glue is provided in the expansion chamber, an extrusion block is provided in the expansion hose, and the extrusion block is connected to the puncture needle.

[0011] In the above-mentioned new and old asphalt pavement overlap structure, the expansion head is mushroom-shaped.

[0012] In the overlapping structure of a new and old asphalt pavement as described above, a soft sealing plate is provided at the other end of the expansion hose, and the soft sealing plate is connected to the fixed pin.

[0013] The construction method of the overlap structure of the new and old asphalt pavement as described above includes step 1, first burying an expansion member at the lower part of the overlap between the old pavement and the new pavement; Step 2: Milling the corners of the old road surface and the new road surface; Step 3: widen the gap between the old road surface and the new road surface; Step 4: After widening the gap between the old road surface and the new road surface, the bottom of the gap is elliptical compacted; Step 5: insert the inverted triangular pyramid soft plug into the gap between the old pavement and the new pavement, and insert the top tip of the inverted triangular pyramid soft plug into the elliptical tamping area; Step 6, laying a pressed soft board on the inverted triangular pyramid soft plug block; Step 7: Use a roller or other equipment to flatten the laminated soft board, so that the expansion glue in the expansion chamber flows out and fills the gap between the old road surface and the new road surface. The fixed pins on the inverted triangular pyramid soft plug-in block are inserted into the expansion glue, and the inverted triangular pyramid soft plug-in block seals the gap between the old road surface and the new road surface. Step 8: Adhere the anti-cracking soft board to the pressed soft board, embed the two ends of the anti-cracking soft board into the inverted installation embedding groove, and fill the installation embedding groove with sand and gravel; Step nine, level the anti-cracking soft board and lay asphalt on the anti-cracking soft board.

[0014] The advantages of the present invention are as follows: the design of the inverted triangular pyramid soft plug block of the present invention enables it to be tightly inserted into the gap between the old road surface and the new road surface, effectively sealing the gap and enhancing the integrity and stability of the road surface structure; at the same time, the setting of the expansion piece further enhances the strength of the connection part through the filling and expansion of the expansion glue, making the connection between the new and old road surfaces more firm; the setting of the pressed soft plate and the anti-cracking soft plate can effectively absorb and disperse the stress on the road surface and reduce the generation of cracks; the present invention can be applied to the overlap between new and old asphalt road surfaces of different materials and different thicknesses, thereby increasing the scope of application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural diagram of the present invention; Figure 3 yes Figure 2 A1 partial enlarged view; Figure 4 yes Figure 2 A2 partial enlarged view.

[0017] Figure numerals: 1. old road surface; 2. new road surface; 3. connection assembly; 4. anti-cracking soft board; 5. installation embedding groove; 6. expansion piece; 31. inverted triangular pyramid soft plug block; 32. fixing pin; 33. pressed soft board; 34. concrete sand and gravel; 61. expansion hose; 62. expansion chamber; 63. expansion head; 64. puncture needle; 65. expansion glue; 66. extrusion block; 67. soft sealing plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-4As shown, a new and old asphalt pavement overlap structure includes an old pavement 1, a new pavement 2 is provided on one side of the old pavement 1, and a connecting component 3 is provided between the old pavement 1 and the new pavement 2; the connecting component 3 includes an inverted triangular pyramid soft plug block 31, the inverted triangular pyramid soft plug block 31 is inserted between the old pavement 1 and the new pavement 2, and the inverted triangular pyramid soft plug block 31 is provided with a fixed pin 32, and the fixed pin 32 is arranged on the side of the inverted triangular pyramid soft plug block, and the inverted triangular pyramid soft plug block 31 is provided with a pressed soft plate 33, and the two ends of the pressed soft plate 33 are respectively connected to the end face corners of the old pavement 1 and the new pavement 2, and an anti-cracking soft plate 4 is provided on the upper part of the pressed plate. The old road surface 1 and the new road surface 2 are both paved with asphalt gravel. After the old road surface 1 and the new road surface 2 are paved, the height needs to be kept equal to ensure that the old road surface 1 and the new road surface 2 are completely overlapped, and the overlapping effect is also ensured. The inverted triangular pyramid soft plug block 31 is inserted into the gap between the old road surface 1 and the new road surface 2. The side of the inverted triangular pyramid soft plug block 31 fits with the end face of the old road surface 1 and the new road surface 2, which plays a role in sealing the gap between the old road surface 1 and the new road surface 2, and ensures the complete overlap between the old road surface 1 and the new road surface 2. The inverted triangular pyramid soft plug block 31 in the connection component 3 of the present invention is spliced ​​with a mortise and tenon structure. On the one hand, it is convenient to add concrete sand and gravel 34 into the inverted triangular pyramid soft plug block 31. On the other hand, the inverted triangular pyramid soft plug blocks 31 are spliced ​​to ensure the tightness of the connection between the inverted triangular pyramid soft plug blocks 31, and prevent the inverted triangular pyramid soft plug block 31 from being damaged when the force on one side is too large, which affects the normal use of the present invention, prolongs the service life of the present invention, reduces the waste of resources, and saves resources.

[0020] Specifically, if Figure 1-4 As shown, in this embodiment, the upper parts of the old road surface 1 and the new road surface 2 are both provided with mounting embedded grooves 5, and the two ends of the anti-cracking soft plate 4 are respectively connected to the mounting embedded grooves 5 on the old road surface 1 and the new road surface 2. The plane where the pressed soft plate 33 is located in the original state is higher than the plane where the old road surface 1 and the new road surface 2 are located. The plane where the anti-cracking soft plate 4 is located is parallel to the plane where the pressed soft plate 33 is located. Concrete gravel 34 is provided inside the inverted triangular pyramid soft plug block 31. The gap between the old road surface 1 and the new road surface 2 can be completely filled, and the anti-cracking soft plate 4 can connect the old road surface 1 with the new road surface 2, and cooperate with the connecting component 3 to ensure the smooth overlap between the old road surface 1 and the new road surface 2.

[0021] Specifically, Figure 1-4As shown, in this embodiment, the lower part of the old road surface 1 and the new road surface 2 are both provided with an expansion member 6. The expansion member 6 includes an expansion hose 61, which is arranged at the lower part of the old road surface 1 and the new road surface 2. An expansion chamber 62 is provided at the top of the expansion hose 61, an expansion head 63 is provided in the expansion chamber 62, a puncture needle 64 is provided in the expansion head 63, an expansion glue 65 is provided in the expansion chamber 62, and an extrusion block 66 is provided in the expansion hose 61, and the extrusion block 66 is connected to the puncture needle 64. The expansion head 63 is mushroom-shaped. A soft sealing plate 67 is provided at the other end of the expansion hose 61, and the soft sealing plate 67 is connected to the fixed pin 32. When the pressed soft board 33 is compressed, the inverted triangular pyramid soft plug block 31 is compressed, the concrete sand and gravel 34 in the inverted triangular pyramid soft plug block 31 moves, and the fixed pin 32 on the inverted triangular pyramid soft plug block 31 squeezes the soft sealing plate 67 at the other end of the expansion tube. The squeezing block 66 in the expansion tube is subjected to the pressure of the fixed pin 32, and the squeezing block 66 moves in the expansion hose 61, pressing the puncture needle 64. The puncture needle 64 passes through the expansion head 63 to pierce the expansion chamber 62, and the expansion glue 65 in the expansion chamber 62 will flow out along the hole pierced by the puncture needle 64 on the expansion head 63. The expansion glue 65 will expand rapidly when it contacts the air, and the fixed pin 32 will pierce the soft sealing plate 67, and the expansion glue 65 will flow out. The fixed pin 32 is embedded in the inverted expansion glue 65 to ensure the insertion stability of the inverted triangular pyramid soft plug block 31, level the pressed soft board 33, lay the anti-cracking soft board 4, and finally seal and apply asphalt to complete the overlap work.

[0022] This embodiment also provides a construction method of a new and old asphalt pavement overlap structure, comprising the following steps: Step 1, first burying an expansion member 6 at the lower part of the overlap between the old pavement 1 and the new pavement 2; Step 2: milling the corners of the ends of the old road surface 1 and the new road surface 2; Step 3: widening the gap between the old road surface 1 and the new road surface 2; Step 4: After widening the gap between the old road surface 1 and the new road surface 2, the bottom of the gap is elliptical compacted; Step 5: insert the inverted triangular pyramid soft plug block 31 into the gap between the old road surface 1 and the new road surface 2, and insert the top tip of the inverted triangular pyramid soft plug block 31 into the elliptical tamping area; Step six, laying a pressed soft board 33 on the inverted triangular pyramid soft plug block 31; Step 7: Use a roller or other equipment to flatten the laminated soft plate 33, so that the expansion glue 65 in the expansion chamber 62 flows out, and the expansion glue 65 fills the gap between the old road surface 1 and the new road surface 2. The fixed pin 32 on the inverted triangular pyramid soft plug block 31 is inserted into the expansion glue 65, and the inverted triangular pyramid soft plug block 31 seals the gap between the old road surface 1 and the new road surface 2. Step eight, adhere the anti-crack soft board 4 on the pressed soft board 33, embed both ends of the anti-crack soft board 4 into the inverted installation embedding groove 5, and fill the installation embedding groove 5 with sand and gravel; Step nine, leveling the anti-cracking soft board 4 and laying asphalt on the anti-cracking soft board 4.

[0023] In this embodiment, the thickness of the laminated soft board 33 must be at least 2 cm, and the thickness of the anti-cracking soft board 4 must be at least 3 cm. Asphalt or other gravel will be installed to fill the embedded groove 5 and level it. The anti-cracking soft board 4 will bond together after being squeezed for a long time. The laminated soft board 33 can be tightly pressed on the upper part of the gap between the old road surface 1 and the new road surface 2 to prevent the laminated soft board 33 from bulging and affecting the overlapping effect.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new and old asphalt pavement overlap structure, comprising an old pavement (1), a new pavement (2) being arranged on one side of the old pavement (1), characterized in that: A connecting assembly (3) is provided between the old road surface (1) and the new road surface (2); The connection assembly (3) comprises an inverted triangular pyramid soft plug-in block (31), which is inserted between the old road surface (1) and the new road surface (2), and a fixed plug-in pin (32) is provided on the inverted triangular pyramid soft plug-in block (31), and the fixed plug-in pin (32) is arranged on the side of the inverted triangular pyramid soft plug-in block (31), and a pressed soft plate (33) is provided on the inverted triangular pyramid soft plug-in block (31), and the two ends of the pressed soft plate (33) are respectively connected to the end face corners of the old road surface (1) and the new road surface (2), and an anti-cracking soft plate (4) is provided on the upper part of the pressed plate.

2. The new and old asphalt pavement overlap structure according to claim 1, characterized in that: The upper parts of the old road surface (1) and the new road surface (2) are both provided with mounting embedding grooves (5), and the two ends of the anti-cracking soft plate (4) are respectively connected to the mounting embedding grooves (5) on the old road surface (1) and the new road surface (2).

3. The new and old asphalt pavement overlap structure according to claim 1 is characterized by: The plane where the laminated soft plate (33) is located in the original state is higher than the planes where the old road surface (1) and the new road surface (2) are located.

4. The new and old asphalt pavement overlap structure according to claim 1, characterized in that: The plane where the anti-cracking soft plate (4) is located is parallel to the plane where the pressed soft plate (33) is located.

5. The new and old asphalt pavement overlap structure according to claim 1 is characterized by: Concrete sand and gravel (34) are arranged inside the inverted triangular pyramid soft plug block (31).

6. The new and old asphalt pavement overlap structure according to claim 1, characterized in that: The lower parts of the old road surface (1) and the new road surface (2) are both provided with expansion pieces (6).

7. The new and old asphalt pavement overlap structure according to claim 6, characterized in that: The expansion member (6) comprises an expansion hose (61), the expansion hose (61) is arranged at the lower part of the old road surface (1) and the new road surface (2), an expansion chamber (62) is arranged at the top of the expansion hose (61), an expansion head (63) is arranged in the expansion chamber (62), a puncture needle (64) is arranged in the expansion head (63), an expansion glue (65) is arranged in the expansion chamber (62), an extrusion block (66) is arranged in the expansion hose (61), and the extrusion block (66) is connected to the puncture needle (64).

8. The new and old asphalt pavement overlap structure according to claim 7, characterized in that: The expansion head (63) is mushroom-shaped.

9. The new and old asphalt pavement overlap structure according to claim 1, characterized in that: The other end of the expansion hose (61) is provided with a soft sealing plate (67), and the soft sealing plate (67) is connected to the fixed pin (32).

10. The construction method of the new and old asphalt pavement overlap structure according to claim 1, characterized in that: Step 1: first bury an expansion member (6) at the lower part of the overlap between the old road surface (1) and the new road surface (2); Step 2: milling the corners of the ends of the old road surface (1) and the new road surface (2); Step 3: widening the gap between the old road surface (1) and the new road surface (2); Step 4: After widening the gap between the old road surface (1) and the new road surface (2), the bottom of the gap is elliptical compacted; Step 5, inserting the inverted triangular pyramid soft plug block (31) into the gap between the old road surface (1) and the new road surface (2), and the tip of the top of the inverted triangular pyramid soft plug block (31) is inserted into the elliptical tamping area; Step six, laying a pressed soft board (33) on the inverted triangular pyramid soft plug block (31); Step 7: Use a roller or other equipment to flatten the laminated soft plate (33), so that the expansion glue (65) in the expansion chamber (62) flows out, and the expansion glue (65) fills the gap between the old road surface (1) and the new road surface (2). The fixed pin (32) on the inverted triangular pyramid soft plug block (31) is inserted into the expansion glue (65), and the inverted triangular pyramid soft plug block (31) seals the gap between the old road surface (1) and the new road surface (2). Step eight, adhering the anti-cracking soft board (4) to the pressed soft board (33), embedding both ends of the anti-cracking soft board (4) into the inverted installation embedding groove (5), and filling the installation embedding groove (5) with sand and gravel; Step nine, leveling the anti-cracking soft board (4) and laying asphalt on the anti-cracking soft board (4).

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