CN111691258B - Construction process of ATB asphalt macadam foundation - Google Patents

Abstract

The invention relates to a construction process of an ATB asphalt macadam foundation, which comprises the following steps: s1, paving a front asphalt layer; s2, installing a barrier; s3, paving asphalt; s4, cutting floating materials; s5, removing the blocking piece; and S6, filling fine materials in the gap between the front asphalt layer and the rear asphalt layer. After the construction is completed, the paved floating materials can be conveniently removed, and the construction quality of the front asphalt layer is not easily influenced.

Description

Construction process of ATB asphalt macadam foundation

Technical Field

The invention relates to the technical field of road paving, in particular to an ATB asphalt macadam foundation construction process.

Background

The asphalt stabilized macadam mixture is a mixture with a certain grading requirement and composed of mineral aggregate and asphalt, and is divided into dense-graded asphalt stabilized macadam (ATB), open-graded asphalt macadam (OGFC surface layer and ATPB base layer) and semi-open-graded Asphalt Macadam (AM) according to the void ratio, the maximum aggregate particle size and the amount of mineral powder added. The base layer is a main bearing layer in the pavement structure, mainly bears vehicle loads transmitted by the surface layer, diffuses into the roadbed, and plays roles of diffusing pavement loads, reducing pavement deformation, preventing or slowing down pavement diseases and the like, so that the base layer has sufficient strength and stability. In the construction process of the ATB asphalt macadam base course, the joint construction is very important, and the appearance, the internal quality and the pavement flatness are directly influenced by the quality of the ATB asphalt macadam base course. The existing construction process of the transverse joint of the asphalt pavement comprises the following steps: and additionally arranging a baffle plate on the constructed asphalt layer or cutting the asphalt layer in order, manually shoveling the mixture cut by the edge of the asphalt layer, and shoveling the transverse joint edge into a vertical shape. When other pavements begin to be paved, the asphalt material is poured to the joint, the asphalt material is leveled by an ironing plate, the asphalt material and the joint end face of the original asphalt layer are compacted and integrated, new floating materials can be left on the paved asphalt layer after the paver leaves the joint, the new floating materials are manually removed, and finally, fine materials with higher temperature are used for filling gaps at the joint.

However, in the actual construction process, when the worker removes the paved floating materials, the worker easily damages the constructed asphalt layer, and the construction quality of the whole asphalt layer is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a construction process of an ATB asphalt macadam foundation, which can conveniently remove paved floating materials after construction is completed.

The above object of the present invention is achieved by the following technical solutions:

a construction process of an ATB asphalt macadam foundation comprises the following steps:

s1, paving a front asphalt layer, cutting the edge surface of the front asphalt layer into vertical joint end surfaces by using a joint cutter, and removing the cut asphalt material;

s2, installing a blocking piece, wherein the blocking piece is installed on the joint end face of the front asphalt layer and comprises a first baffle and a second baffle, the first baffle is attached to the top face of the front asphalt layer, the second baffle is attached to the joint end face of the front asphalt layer, and the side edges of the first baffle and the second baffle, which are close to each other, are hinged;

s3, paving asphalt, wherein when the paving is started, the paving position is located right above the first baffle plate, the asphalt located on the upper side of the first baffle plate is floating materials, and the asphalt located on one side, far away from the first baffle plate, of the second baffle plate is a rear asphalt layer;

s4, cutting the floating material, rotating the first baffle to separate the floating material from the rear asphalt layer, and then cutting the floating material;

s5, taking down the blocking piece, taking down the floating material from the first baffle plate, enabling the floating material to fall off from the front asphalt layer and the rear asphalt layer, and then drawing out the first baffle plate and the second baffle plate;

s6, filling fine materials into the gap between the front asphalt layer and the rear asphalt layer, and enabling the top surface of the fine materials to be equal to the top surfaces of the front asphalt layer and the rear asphalt layer in height.

Through adopting above-mentioned technical scheme, install through the seam terminal surface on the pitch layer in the front and stop the piece, the seam terminal surface on pitch layer in the front is protected. When the asphalt layer after the follow-up paving, the lapped flotation of back asphalt layer and preceding asphalt layer is located and stops on the piece, after paving the back asphalt layer, rotates first baffle, can make flotation and preceding asphalt layer separate, what the workman can be convenient cuts and shovels the operation to the flotation. And after the float material is cut, the first baffle and the second baffle are drawn out, and then the fine material is filled between the front asphalt layer and the rear asphalt layer, so that the fine material is filled in a gap where the blocking piece is installed, and then the laying can be finished. The workman is when the relief, is difficult to destroy preceding pitch layer, has effectively protected the quality on preceding pitch layer.

The present invention in a preferred example may be further configured to: step S3 in the equipment of spreading pitch be the paver, first baffle keep away from the fixed pendant that lifts that is provided with on the side of second baffle, swing joint has the couple pole on the paver, the one end that the paver was kept away from to the couple pole can be hooked up and lifted the pendant, makes first baffle remove along with the paver, and first baffle rotates for the second baffle.

Through adopting above-mentioned technical scheme, when the pitch layer after paving through the paver, through movable mounting have the couple pole on the paver to the one end overlap joint that makes the couple pole keep away from the paver is on the top surface on pitch layer in the front. When the paver continues to move the paved asphalt layer, the hook rod moves along the top surface of the front asphalt layer until hooking the lifting hanging piece on the first baffle, and then the first baffle is driven to rotate. When the paver moves, the movement is more stable because the paver moves along the road paving direction. When driving first baffle pivoted, each position pivoted angular velocity of first baffle is the same, compares in artifical the rotation, can make first baffle difficult damaged, and the degree that the flotation material on the first baffle was buckled is the same, and the flotation material cuts off more easily.

The present invention in a preferred example may be further configured to: the lifting pendant comprises a lifting plate, an included angle between the lifting plate and the first baffle is an obtuse angle, and one end, far away from the first baffle, of the lifting plate is higher than the first baffle of the asphalt layer before the lifting plate is attached.

Through adopting above-mentioned technical scheme, at the in-process that the paver removed, the board that lifts is hitched that the couple pole can be light to drive first baffle and rotate. And after the first baffle is driven to rotate to the second baffle and keep away from one side of the front asphalt layer, the hook rod can automatically fall off from the first baffle, and the position of the hook rod is not required to be adjusted by a worker. The phenomenon that the second baffle is pulled out because the first baffle is continuously driven to move is not easy to occur, and then the rear asphalt layer which is just laid is extruded and damaged.

The present invention in a preferred example may be further configured to: the baffle piece comprises a cutting plate, a cutting through groove is formed in the second baffle, the cutting through groove is formed in the upper side edge of the second baffle, a horizontal guide slide rail is fixedly mounted on the side face, adjacent to the joint end face, of the second baffle, the guide slide rail is adjacent to the cutting through groove in position, the cutting plate is slidably mounted on the guide slide rail, one side, away from the cutting through groove, of the cutting plate is connected with one side, away from the second baffle, of the first baffle through a connecting chain, one side, away from the connecting chain, of the cutting plate is arranged to be in a zigzag shape, when the first baffle is arranged on the front asphalt layer in a covering mode, the cutting plate is located on the lower side of the first baffle and is located on one side, close to the first baffle, of the cutting through groove, when the first baffle rotates to the vertical state from the horizontal state, the connecting chain on the cutting plate is stretched straight, and the side edge, provided with the zigzag, of the cutting plate penetrates through groove.

Through adopting above-mentioned technical scheme, be connected with the connecting chain between first baffle and the cutting board, the length of connecting chain is installed according to actual conditions, and when making first baffle rotate to vertical state, the connecting chain was stretched straight. When the hook rod drives the first baffle to rotate to one side, far away from the front asphalt layer, of the first baffle, the connecting chain drives the cutting plate to move along the guide sliding rail, and one side, provided with the saw teeth, of the cutting plate can be squeezed into the asphalt which is just laid. Can tentatively cut apart the flotation with back pitch layer, the workman of being convenient for cuts the flotation from back pitch layer and separates.

The present invention in a preferred example may be further configured to: the guide slide rail all install one in the both ends department of second baffle, the guide slide rail all inclines towards the one end department of second baffle, and two guide slide rails are parallel to each other.

Through adopting above-mentioned technical scheme, set the slope setting with the direction slide rail, when the cutting board removed along the direction slide rail, the cutting board was provided with the more easy pitch cutting of one side of sawtooth, makes in the easier crowded pitch of cutting board, and the workman of being convenient for separates flotation material and back pitch layer.

The present invention in a preferred example may be further configured to: the sawtooth of cutting board all incline towards the one end department of second baffle, and the one end that the sawtooth inclined towards is the same with the one end that the direction slide rail inclined towards.

Through adopting above-mentioned technical scheme, when the cutting board is in the cutting pitch, the sawtooth is not direct vertically in penetrating the pitch layer, but the slant cutting is in penetrating the pitch. Compare in the vertical pitch layer of stabbing, such cutting effect is better, is difficult for when the cutting flotation, and it is incomplete to appear to have the cutting between flotation and the back pitch layer, leads to causing the phenomenon of too big damage to back pitch layer.

The present invention in a preferred example may be further configured to: the guide slide rail be the guide bar, all seted up the direction spout on the side that the guide bar is close to each other, the both ends of cutting board are inlayed and are established in the direction spout of two guide bars.

Through adopting above-mentioned technical scheme, make the cutting board when removing along the direction slide rail, the cutting board can be lived the position by the fine restriction of direction slide rail, is difficult for appearing the cutting board because the phenomenon that leads to droing from the direction slide rail of energetically pulling.

The present invention in a preferred example may be further configured to: the length of first baffle and second baffle all be greater than the width on preceding pitch layer, the both ends department of first baffle all is connected with reset spring, reset spring's the other end and second baffle are connected.

Through adopting above-mentioned technical scheme, reset spring can stimulate first baffle and be close to the second baffle, and when will stopping the piece and erect in the front on the pitch layer, laminating that first baffle and second baffle can be fine is in the front on the pitch layer. And when the first baffle of pulling, make first baffle rotate to the second baffle and keep away from one side on preceding pitch layer, reset spring can play the effect of supplementary pulling cutting board, makes in the cutting board can be easier extrudees into pitch to it is more easy to part together flotation material and back pitch layer. .

In summary, the invention includes at least one of the following beneficial technical effects:

1. after construction is completed, the paved floating materials can be conveniently removed, and the construction quality of the front asphalt layer is not easily influenced;

2. the floating material can be cut off more easily when being cut.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is a schematic structural view of the entire blocking member after the first shutter is rotated to the vertical state.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

In the figure, 1, the front asphalt layer; 2. a post-asphalt layer; 21. floating; 3. a blocking member; 31. a first baffle plate; 32. a second baffle; 33. a return spring; 4. cutting a through groove; 5. a guide slide rail; 51. a guide bar; 52. a guide chute; 53. cutting the board; 6. a connecting chain; 61. lifting the plate; 7. mounting a rod; 71. mounting a hanging ring; 72. hanging and connecting rings; 73. a hook rod; 731. and a hook is hung.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the construction process of the ATB asphalt macadam foundation disclosed by the invention comprises the following steps,

s1, paving a front asphalt layer 1, paving the front asphalt layer 1 on a road base layer, cutting the edge surface of the front asphalt layer 1 into vertical joint end surfaces by using a joint cutter, and shoveling off cut asphalt materials;

s2, installing a blocking piece 3, installing the blocking piece 3 on the joint end face of the front asphalt layer 1, wherein the blocking piece 3 comprises a first baffle 31 and a second baffle 32 which are hinged with each other, the first baffle 31 is attached to the top face of the front asphalt layer 1, and the second baffle 32 is attached to the joint end face of the front asphalt layer 1;

s3, paving asphalt, wherein when the paving is started, the paving position is located right above the first baffle plate 31, the asphalt located on the upper side of the first baffle plate 31 is floating materials 21, and the asphalt located on the side, far away from the first baffle plate 31, of the second baffle plate 32 is a rear asphalt layer 2;

s4, cutting the floating material 21, rotating the first baffle 31 to separate the floating material 21 from the rear asphalt layer 2, and then cutting the floating material 21;

s5, removing the baffle 3, removing the float 21 from the first baffle 31, so that the float 21 falls off from the front asphalt layer 1 and the rear asphalt layer 2, and then drawing out the first baffle 31 and the second baffle 32;

s6, filling fine materials into the gap between the front asphalt layer 1 and the rear asphalt layer 2, and enabling the top surface of the fine materials to be equal to the top surfaces of the front asphalt layer 1 and the rear asphalt layer 2 in height.

Wherein the length of the first baffle 31 and the second baffle 32 in the barrier 3 are both greater than the width of the front asphalt layer 1 and the rear asphalt layer 2. Both ends of the first baffle 31 are connected with a return spring 33, and the other end of the return spring 33 is connected with one end of the second baffle 32. The joint end face of the front asphalt layer 1 is protected by installing the blocking piece 3 on the joint end face of the front asphalt layer 1. In the follow-up asphalt layer 2 that paves after, the floater 21 of back asphalt layer 2 and preceding asphalt layer 1 overlap joint is located and stops 3, and after paving good back asphalt layer 2, rotate first baffle 31, can make floater 21 and preceding asphalt layer 1 separate, what the workman can be convenient cuts and shovels the operation to floater 21. And after the floating material 21 is cut, the first baffle 31 and the second baffle 32 are pulled out, and then the fine material is filled between the front asphalt layer 1 and the rear asphalt layer 2, so that the fine material is filled in the gap where the blocking piece 3 is installed, and then the laying can be finished. The workman is when the spilled material 21 of shovel, is difficult to destroy preceding pitch layer 1, has effectively protected the quality on preceding pitch layer 1.

Referring to fig. 2 and 3, a cutting through groove 4 and a guide sliding rail 5 are provided on the side surface of the second baffle 32 attached to the front asphalt layer 1. The cutting through groove 4 is formed along the upper side edge of the second baffle 32, and gaps are formed between the two ends of the cutting through groove 4 and the two ends of the second baffle 32. The guide rail 5 comprises two guide rods 51, and one guide rod 51 is welded at each end of the cutting through groove 4. The two guide rods 51 are horizontally arranged and inclined towards one end of the second baffle plate 32, and the two guide rods 51 are parallel to each other. The guide sliding grooves 52 are formed in the side faces, close to each other, of the two guide rods 51, the cutting plate 53 is installed between the two guide rods 51 in a sliding mode, the two ends of the cutting plate 53 are embedded in the guide sliding grooves 52 of the two guide rods 51, and when the cutting plate 53 slides along the guide rods 51, the cutting plate 53 can penetrate through the guide sliding grooves 52. One side of the cutting plate 53 is arranged in a zigzag shape, and when the cutting plate 53 is positioned on one side of the first baffle 31 close to the front asphalt layer 1, the side of the cutting plate 53 provided with the zigzag is adjacent to the second baffle 32. The saw teeth of the cutting board 53 are all inclined toward the end of the second barrier 32, and the end of the second barrier 32, toward which the saw teeth are inclined, is the same as the end of the second barrier 32, toward which the guide rail 5 is inclined. When the first baffle 31 is horizontally positioned on the upper side of the front asphalt layer 1, the first baffle 31 is attached to the top surfaces of the two guide rods 51, the two guide rods 51 are attached to the top surface of the front asphalt layer 1, and the cutting plate 53 is positioned on one side of the second baffle 32 close to the front asphalt layer 1. A connecting chain 6 is connected between the first baffle plate 31 and the cutting plate 53, the length of the connecting chain 6 is installed according to actual conditions, and when the first baffle plate 31 rotates to be in a vertical state, the connecting chain 6 is stretched straightly. When the hook rod 73 drives the first baffle 31 to rotate to one side of the first baffle 31 far away from the front asphalt layer 1, the connecting chain 6 drives the cutting plate 53 to move along the guide sliding rail 5, so that one side of the cutting plate 53 provided with the saw teeth can be obliquely cut and penetrated into asphalt. Compared with the vertical penetration into the asphalt layer, the cutting effect is better, and the phenomenon that the rear asphalt layer 2 is damaged too much due to incomplete cutting between the floating material 21 and the rear asphalt layer 2 is not easy to occur when the floating material 21 is cut. Can tentatively cut apart flotation 21 and back pitch layer 2, the workman of being convenient for cuts the flotation 21 from back pitch layer 2 and separates.

Referring to fig. 1 and 2, the cutting board 53 is connected to the link chain 6, and one side of the link chain 6 connected to the cutting board 53 is a side opposite to the side of the cutting board 53 on which the serrations are provided. The other end of the connecting chain 6 is connected with the side edge of the first baffle 31 far away from the second baffle 32. When the first flap 31 is rotated to the vertical state, the link chain 6 is straightened. An opening plate 61 serving as an opening hanger is integrally formed on the side of the first baffle 31 away from the second baffle 32, an included angle between the opening plate 61 and the first baffle 31 is an obtuse angle, and when the first baffle 31 is attached to the front asphalt layer 1, the side of the opening plate 61 away from the first baffle 31 is higher than the height of the first baffle 31. In step S3, the paving machine is a paving machine, the paving machine is fixedly provided with a mounting rod 7, the mounting rod 7 is fixedly provided with a mounting ring 71, the mounting ring 71 is movably provided with a hanging ring 72, the hanging ring 72 is integrally formed with a hook rod 73, one end of the hook rod 73 away from the hanging ring 72 is a hanging hook 731, and the hanging hook 731 can hook the lifting plate 61, so that the first baffle 31 moves along with the paving machine, and the first baffle 31 rotates relative to the second baffle 32. In the moving process of the paver, the hook rod 73 can easily hook the lifting plate 61, so as to drive the first baffle 31 to rotate. And after the first baffle 31 is driven to rotate to the side, far away from the front asphalt layer 1, of the second baffle 32, the hook rod 73 can automatically fall off from the first baffle 31, and the position of the hook rod 73 does not need to be adjusted by a worker. The phenomenon that the second baffle 32 is pulled out because the first baffle 31 is continuously driven to move, and then the rear asphalt layer 2 which is just laid is extruded and damaged is not easy to occur.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (7)

1. The construction process of the ATB asphalt macadam foundation is characterized by comprising the following steps:

s1, paving the front asphalt layer (1), cutting the edge surface of the front asphalt layer (1) into vertical joint end surfaces by using a joint cutter, and removing the cut asphalt material;

s2, installing a blocking piece (3), installing the blocking piece (3) on the joint end face of the front asphalt layer (1), wherein the blocking piece (3) comprises a first baffle (31) and a second baffle (32), the first baffle (31) is attached to the top face of the front asphalt layer (1), the second baffle (32) is attached to the joint end face of the front asphalt layer (1), and the side edges, close to each other, of the first baffle (31) and the second baffle (32) are hinged;

s3, paving asphalt, wherein when paving is started, the paving position is located right above the first baffle plate (31), the asphalt located on the upper side of the first baffle plate (31) is floating materials (21), and the asphalt located on the side, far away from the first baffle plate (31), of the second baffle plate (32) is a rear asphalt layer (2);

s4, cutting the floating material (21), rotating the first baffle (31) to separate the floating material (21) from the rear asphalt layer (2), and then cutting the floating material (21);

s5, removing the blocking piece (3), removing the floating material (21) from the first baffle (31), enabling the floating material (21) to fall off from the front asphalt layer (1) and the rear asphalt layer (2), and then drawing out the first baffle (31) and the second baffle (32);

s6, filling fine materials into a gap between the front asphalt layer (1) and the rear asphalt layer (2), and enabling the top surface of the fine materials to be equal to the top surfaces of the front asphalt layer (1) and the rear asphalt layer (2) in height;

step S3 in the equipment of spreading pitch be the paver, first baffle (31) keep away from the fixed pendant that lifts that is provided with on the side of second baffle (32), swing joint has couple pole (73) on the paver, the one end that the paver was kept away from in couple pole (73) can be caught on the pendant that lifts, makes first baffle (31) remove along with the paver, and first baffle (31) rotate for second baffle (32).

2. The construction process of the ATB asphalt macadam foundation according to claim 1, which is characterized in that: the lifting pendant comprises a lifting plate (61), an included angle between the lifting plate (61) and the first baffle (31) is an obtuse angle, and one end, far away from the first baffle (31), of the lifting plate (61) is higher than the first baffle (31) attached to the front asphalt layer (1).

3. The construction process of the ATB asphalt macadam foundation according to claim 2, characterized in that: the blocking piece (3) comprises a cutting plate (53), a cutting through groove (4) is formed in the second baffle (32), the cutting through groove (4) is arranged along the upper side edge of the second baffle (32), a horizontal guide sliding rail (5) is fixedly installed on the side face, adjacent to the joint end face, of the second baffle (32), the guide sliding rail (5) is adjacent to the cutting through groove (4), the cutting plate (53) is installed on the guide sliding rail (5) in a sliding mode, one side, far away from the cutting through groove (4), of the cutting plate (53) is connected with one side, far away from the second baffle (32), of the first baffle (31) through a connecting chain (6), one side, far away from the connecting chain (6), of the cutting plate (53) is arranged to be in a saw-toothed shape, when the first baffle (31) is covered on the front asphalt layer (1), the cutting plate (53) is located on the lower side of the first baffle (31) and is located on one side, close to the first baffle (31), of the cutting through groove (4), when the first baffle (31) rotates from the horizontal state to the vertical state, the connecting chain (6) on the cutting plate (53) is stretched straight, and the side edge of the cutting plate (53) provided with the saw teeth penetrates through the cutting through groove (4).

4. The construction process of the ATB asphalt macadam foundation according to claim 3, characterized in that: the two ends of the second baffle (32) of the guide slide rail (5) are respectively provided with one guide slide rail (5), the guide slide rails (5) are inclined towards one end of the second baffle (32), and the two guide slide rails (5) are parallel to each other.

5. The construction process of the ATB asphalt macadam foundation according to claim 4, characterized in that: the sawteeth of the cutting plate (53) incline towards one end of the second baffle plate (32), and the inclined end of the sawteeth is the same as the inclined end of the guide sliding rail (5).

6. The construction process of the ATB asphalt macadam foundation according to claim 4, characterized in that: the cutting machine is characterized in that the guide sliding rail (5) is a guide rod (51), guide sliding grooves (52) are formed in the side faces, close to each other, of the guide rod (51), and the two ends of the cutting plate (53) are embedded in the guide sliding grooves (52) of the two guide rods (51).

7. The construction process of the ATB asphalt macadam foundation according to claim 2, characterized in that: the length of first baffle (31) and second baffle (32) all be greater than the width of preceding pitch layer (1), the both ends department of first baffle (31) all is connected with reset spring (33), the other end and the second baffle (32) of reset spring (33) are connected.

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