CN112176813A

CN112176813A - Asphalt concrete pavement maintenance structure and method thereof

Info

Publication number: CN112176813A
Application number: CN202011010915.2A
Authority: CN
Inventors: 侯立永; 陆秋红; 潘益锋; 许皓; 辛伟科
Original assignee: Jiangsu Port Access Bridge Group Co ltd
Current assignee: Jiangsu Port Access Bridge Group Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-01-05
Anticipated expiration: 2040-09-23
Also published as: CN112176813B

Abstract

The utility model relates to a bituminous concrete road surface maintenance structure and method, a bituminous concrete road surface maintenance structure, including repairing the groove, repair the groove and offer in former road layer, repair the inslot from the bottom up and set gradually and repair basic unit and repair the surface course, repair the bottom fixedly connected with brace table of inslot wall, brace table and former road layer body coupling, the embedded steel reinforcement cage circle that is equipped with of repair basic unit, and the steel reinforcement cage circle is located brace table upper portion, and it is formed by concrete placement to repair the basic unit. This application has the effect that increases the life of maintenance back asphalt concrete road surface. A method for maintaining an asphalt concrete pavement comprises the following steps: digging a placing groove, a first clamping groove and a repairing groove, and installing an installation part and a rib plate; binding a steel bar cage ring, pouring concrete, paving an anti-cracking net, and hardening to obtain a repaired base layer; and continuously paving the asphalt concrete to obtain a repaired surface layer. The effect of simple and convenient construction is achieved.

Description

Asphalt concrete pavement maintenance structure and method thereof

Technical Field

The application relates to the field of pavement maintenance, in particular to a bituminous concrete pavement maintenance structure and a method thereof.

Background

Along with the increase of the vehicles passing by now, the structural performance of the asphalt pavement is gradually deteriorated along with the repeated action of the driving load and the change of the environmental conditions, and particularly at the position of an intersection of a road, the passing frequency of the vehicles and the action of the vehicle load are more, so that the damage is more easily caused.

The known method for repairing the damaged pavement is to restore the damaged pavement according to the original road design scheme, and in the asphalt concrete pavement design scheme, a flexible subbase layer (graded broken stone) + a semi-rigid base layer (cement stabilized broken stone) + an asphalt surface layer are adopted conventionally.

The flexible subbase layer and the semi-rigid base layer need to be constructed by layered rolling, and the settlement after construction is also larger. Because old roads are operated for years, the subgrade and pavement are basically stable, and the settlement tends to zero. If the traditional scheme is adopted to repair the road, the problems that the strength of the new road is inconsistent with that of the old road, and the joint of the new road and the old road is easy to crack due to large settlement of the new repair part can occur, so that the service life of the repaired road is shortened.

Disclosure of Invention

In order to prolong the service life of the asphalt concrete pavement after maintenance, the application provides an asphalt concrete pavement maintenance structure and a method thereof.

The name provided by the application adopts the following technical scheme:

the utility model provides a bituminous concrete road surface maintenance structure, includes the repair groove, repairs the groove and offers in former road layer, repairs the inslot from the bottom up and has set gradually the repair basic unit and repair the surface course, repairs the bottom fixedly connected with brace table of inslot wall, brace table and former road layer body coupling, and the embedded steel reinforcement cage circle that is equipped with of repair basic unit, and the steel reinforcement cage circle is located brace table upper portion, and the repair basic unit is formed by concrete placement.

By adopting the technical scheme, the repairing base layer is a rigid foundation and is not easy to generate sedimentation; the reinforcement cage ring has an edge reinforcing effect on the edge position of the repaired base layer, so that the edge position of the abutted position of the repaired base layer and the original road layer is not easy to damage; meanwhile, due to the supporting effect of the supporting platform on the reinforcement cage ring, the positions of the reinforcement cage ring, the repairing base layer and the original road layer in the vertical direction are stable, so that the repairing base layer is further not prone to sedimentation, and the service life of the asphalt concrete pavement after maintenance is prolonged.

Optionally, an anti-cracking net is arranged in the middle of the steel reinforcement cage ring and is fixedly connected with the steel reinforcement cage ring.

Through adopting above-mentioned technical scheme, the crack control net produces the anchor effect to repairing the basic unit, repairs the difficult condition that produces the fracture of basic unit to make and repair basic unit middle part and border position have better wholeness, reduced the use of reinforcing bar simultaneously.

Optionally, a plurality of vertical first clamping grooves are formed in the original road layer from the edge of the repairing groove, the edge of the repairing groove where the clamping grooves are perpendicular to the edge of the repairing groove is formed, a second clamping groove corresponding to the first clamping grooves in a one-to-one mode is formed in the repairing surface layer from the edge of the repairing groove, rib plates are arranged in the first clamping grooves in a clamped mode, the rib plates are arranged in the second clamping grooves in a clamped mode, the top of each rib plate is flush with the surface of the original road layer and the surface of the repairing surface layer, and the avoiding grooves used for avoiding the steel bar cage.

Through adopting above-mentioned technical scheme, the gusset plays the additional strengthening to the position between the original road layer and the repair surface course, and when the vehicle was gone and out of date from the handing-over department between original road layer and the repair surface course, the load of part vehicle can be born at the top of gusset to the direct load that bears of original road layer and repair surface course juncture has been reduced, thereby the original road layer of inconsistent intensity and the damaged possibility of repair surface course border position have been reduced, thereby the life on maintenance back asphalt concrete road surface has further been increased.

Optionally, the standing groove has been seted up on former road layer, and the standing groove begins from the upper surface of brace table, extends along the direction level of keeping away from gradually repairing the groove middle part, is provided with connecting portion on the brace table, and connecting portion include that the level is placed in the horizontal plate of brace table and the connecting plate of fixed connection in horizontal plate upper surface middle part position, and in the horizontal plate stretched into the standing groove, the vertical setting of connecting plate just with the inner wall butt in repairing the groove, the spread groove has been seted up to the bottom of gusset, and the connecting plate is located the spread groove.

Through adopting above-mentioned technical scheme, connecting portion play the supporting role to the gusset, play the effect of dispersion gusset load simultaneously, go and outdated from the handing-over department between former road bed and the repair surface course as the vehicle, partial load acts on the gusset, and the load that the gusset bore further transmits for connecting plate and horizontal plate, horizontal plate and whole brace table butt to can obtain certain dispersion with load on whole brace table, thereby reduced the possibility of brace table damage.

Optionally, a plurality of through holes are formed in the bottom of the connecting plate.

Through adopting above-mentioned technical scheme, when carrying out concrete placement to repairing the basic unit, the connecting plate can be passed from the through-hole to the concrete to carry out better packing to standing groove and the position of repairing between groove and the connecting plate, guaranteed the stability of being connected between connecting plate and former road bed and the repair basic unit.

Optionally, the side wall of the connecting plate is fixedly connected with vertical clamping strips, the two clamping strips form a group, and the rib plate is clamped between the two clamping strips.

By adopting the technical scheme, the rib plates are limited by the clamping strips, so that the rib plates are not easy to deform after being loaded.

Optionally, the rib plates are gradually reduced in thickness from the positions of the connecting grooves to the directions close to the two ends of the rib plates, the heights of the two ends of the top of each rib plate and the middle of each rib plate are gradually increased, the height difference between the two ends of the top of each rib plate and the middle of each rib plate is 0.2-0.4mm, and the two ends of each rib plate are flush with the original pavement.

By adopting the technical scheme, when the vehicle runs to the rib plate, the vehicle is gradually guided by the rib plate and gradually gets away from the surface of the original road layer and the surface of the repaired base layer along with the gradual approach of the vehicle to the boundary of the original road layer and the repaired base layer, so that the stress of the boundary of the original road layer and the repaired base layer is further reduced, and the possibility of damage of the boundary of the original road layer and the repaired base layer is reduced.

Optionally, the middle part of the rib plate is rotatably connected with an adjusting screw rod, the adjusting screw rod is vertically arranged and is in threaded connection with the connecting plate, a counter bore is formed in the top of the rib plate, and the top of the adjusting screw rod is located in the counter bore.

Through adopting above-mentioned technical scheme, when having seted up certain error of repairing the groove, rotatable adjusting screw, adjusting screw can drive the gusset and vertically shift up or vertically shift down, and the top that reaches the gusset both ends flushes with the surface on former road bed, has realized the repair in-process, to the high adaptability of construction error.

Optionally, a protection sleeve is connected to the connecting plate, the protection sleeve comprises a plurality of protection sleeves which are sequentially connected in a sleeved mode, the protection sleeve at the innermost side is fixedly connected with the connecting plate, the bottom of the inner wall of the protection sleeve and the top of the outer wall of the protection sleeve are fixedly connected with anti-falling rings, a thread groove is formed in the bottom of the rib plate, and the protection sleeve at the outermost side is located in the thread groove and is in threaded connection with the rib plate.

Through adopting above-mentioned technical scheme, the gusset joint is to lag barrel outside back, at first rotates adjusting screw, makes adjusting screw and connecting plate threaded connection get up, and when the bottom of spread groove was close to the connecting plate, the pulling outside a protective tube and rotate a protective tube, a protective tube enters into the thread groove gradually, and a lag barrel can block adjusting screw's outer hourglass part, mends the basic unit and pours the in-process, has avoided the concrete to solidify outside adjusting screw and make the height of gusset can not adjust.

A method for maintaining an asphalt concrete pavement comprises the following steps:

s1: digging a placing groove, a first clamping groove and a repairing groove at the damaged position of the pavement to form a supporting table on the inner side of the placing groove, placing a horizontal plate on the supporting table and in the placing groove at the same time, enabling a connecting plate to be vertically upward, placing a rib plate in the first clamping groove, and clamping the rib plate and the connecting plate at the same time;

s2: binding a reinforcement cage ring, and enabling the reinforcement cage ring to penetrate through the avoidance groove, wherein the reinforcement cage ring is perpendicular to the rib plate;

s3: pouring concrete at the bottom of the repairing groove, tamping, paving an anti-cracking net, pouring the concrete at least twice, and forming a repairing base layer after hardening;

s4: and paving asphalt concrete on the surface of the repaired base layer to obtain a repaired surface layer.

Through adopting above-mentioned technical scheme, at first carry out standing groove, first draw-in groove and repair a logical of groove and set up, carry out the installation of connecting plate and gusset again, the last bucket is pour for each step can go on in order, is favorable to improving the construction progress.

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

1. by arranging the supporting table and the reinforcement cage ring, the position between the rigid repair base layer and the original road layer in the vertical direction is stable, so that the repair base layer is further not easy to generate settlement, and the service life of the asphalt concrete pavement after maintenance is prolonged;

2. by arranging the rib plates, the top of the rib plates can bear part of the load of the vehicle, so that the load directly borne by the junction of the original pavement layer and the repaired surface layer is reduced, the possibility of damage to the edge positions of the original pavement layer and the repaired surface layer with inconsistent strength is reduced, and the service life of the asphalt concrete pavement after maintenance is prolonged;

3. through setting up connecting portion, connecting portion play the supporting role to the gusset, play the effect of dispersion gusset load simultaneously, make the load that the gusset bore, can obtain certain dispersion on whole brace table to the possibility of brace table damage has been reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is a cross-sectional view of a road course.

Fig. 3 is a schematic diagram of a structure intended to embody a card strip.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Fig. 5 is an enlarged schematic view of a portion B of fig. 3.

Description of reference numerals: 1. a primary road layer; 11. repairing the groove; 12. a support table; 13. a first card slot; 14. a placement groove; 2. repairing the base layer; 21. a reinforcement cage ring; 22. a crack control web; 3. repairing the surface layer; 31. a second card slot; 4. a rib plate; 41. an avoidance groove; 42. connecting grooves; 43. adjusting the screw rod; 44. a counter bore; 45. a thread groove; 5. a connecting portion; 51. a horizontal plate; 52. a connecting plate; 521. a through hole; 522. clamping the strip; 6. a protective cylinder; 61. the anticreep circle.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses bituminous concrete road surface maintenance structure. Referring to fig. 1 and 2, a bituminous concrete road surface maintenance structure is including repairing groove 11, repair groove 11 and offer in former road bed 1, repair groove 11 interior from the bottom up and have set gradually and repair basic unit 2 and repair surface course 3, repair the bottom fixedly connected with brace table 12 of 11 inner walls in groove, brace table 12 and former road bed 1 body coupling, repair 2 embedded steel reinforcement cage circles 21 that are equipped with in basic unit, and steel reinforcement cage circles 21 and is located 12 upper portions of brace table, steel reinforcement cage circles 21 middle part position is provided with crack control net 22, crack control net 22 and steel reinforcement cage circles 21 fixed connection, repair basic unit 2 and form for concrete placement, it forms by bituminous concrete placement to repair surface course 3. Adopt the supporting role of rigid repair basic unit 2 and brace table 12 to steel reinforcement cage circle 21, repair the position in the vertical direction between basic unit 2 and the former road bed 1 comparatively stable, repair basic unit 2 and be difficult for producing and subside, increased the life on maintenance back asphalt concrete road surface.

Referring to fig. 2 and 3, an anti-cracking net 22 is arranged in the middle of the steel reinforcement cage ring 21, the anti-cracking net 22 is fixedly connected with the steel reinforcement cage ring 21, in addition, in the embodiment, the anti-cracking net 22 is arranged in two layers, one layer is located in the middle of the repair base layer 2, and the other layer is located on the surface of the repair base layer 2.

Referring to fig. 4 and 5, a plurality of vertical first clamping grooves 13 are formed in the original road layer 1 from the edge of the repairing groove 11, the clamping groove is perpendicular to the edge of the repairing groove 11, the second clamping grooves 31 corresponding to the first clamping grooves 13 one to one are formed in the repairing surface layer 3 from the edge of the repairing groove 11, rib plates 4 are clamped in the first clamping grooves 13, the rib plates 4 are clamped in the second clamping grooves 31 at the same time, avoiding grooves 41 used for avoiding the steel bar cage rings 21 are formed in the bottoms of the rib plates 4, and the avoiding grooves 41 extend upwards from the bottoms of the rib plates 4. The thickness of the rib plate 4 is gradually reduced from the position of the connecting groove 42 to the direction close to the two ends of the rib plate 4, the height from the two ends of the top of the rib plate 4 to the middle of the rib plate 4 is gradually increased, the height difference between the two ends of the top of the rib plate 4 and the middle of the rib plate 4 is 0.2-0.4mm, and the two ends of the rib plate 4 are flush with the original pavement. When the vehicle runs out of the junction between the original road layer 1 and the repairing surface layer 3, the top of the rib plate 4 can bear part of the load of the vehicle, the load directly borne by the junction between the original road layer 1 and the repairing surface layer 3 is reduced, the possibility of damage to the edge positions of the original road layer 1 and the repairing surface layer 3 with inconsistent strength is reduced, and the service life of the asphalt concrete pavement after maintenance is further prolonged.

Referring to fig. 4 and 5, a placing groove 14 has been opened on the original road layer 1, the placing groove 14 starts from the upper surface of the supporting table 12, the horizontal extension is along the direction that gradually keeps away from the middle part of the repairing groove 11, the connecting portion 5 is provided on the supporting table 12, the connecting portion 5 includes a horizontal plate 51 that is horizontally placed on the supporting table 12 and a connecting plate 52 that is fixedly connected to the middle part of the upper surface of the horizontal plate 51, the horizontal plate 51 stretches into the placing groove 14, the connecting plate 52 is vertically arranged and is abutted against the inner wall of the repairing groove 11, the connecting groove 42 has been opened at the bottom of the rib plate 4, the connecting plate 52 is located in the connecting groove 42, the connecting plate 52 is adapted to the connecting groove 42, the rib plate. Two vertical lateral walls of connecting plate 52 all fixedly connected with vertical card strip 522, card strip 522 two be a set of, and gusset 4 card is located between a set of two card strips 522. When a vehicle runs out of the junction between the original road layer 1 and the repair surface layer 3, part of load acts on the rib plate 4, the load borne by the rib plate 4 is further transmitted to the connecting plate 52 and the horizontal plate 51, the horizontal plate 51 is abutted against the whole supporting platform 12, the horizontal plate 51 can disperse the load on the whole supporting platform 12 to a certain extent, and the load bearing capacity of the rib plate 4 is improved.

Referring to fig. 4 and 5, the middle part of the rib plate 4 is rotatably connected with an adjusting screw 43, the adjusting screw 43 is vertically arranged, the adjusting screw 43 is in threaded connection with a connecting plate 52, the top of the rib plate 4 is provided with a counter bore 44, and the top of the adjusting screw 43 is positioned in the counter bore 44. Be connected with a protection sleeve section of thick bamboo on the connecting plate 52, a protection sleeve section of thick bamboo is including cup jointing a plurality of protection section of thick bamboos 6 of connecting in proper order, and the most inboard protection section of thick bamboo 6 and connecting plate 52 fixed connection, the top fixedly connected with anticreep circle 61 of the bottom of the inner wall of a protection section of thick bamboo 6 and outer wall, spread groove 42 has been seted up to the bottom of gusset 4, the protection section of thick bamboo 6 in the outside be located spread groove 42 and with gusset 4 threaded connection. The outer hourglass part of adjusting screw 43 can be located to the cover sleeve, has avoided repairing basic unit 2 and has pour the in-process concrete and solidify outside adjusting screw 43. When a certain error is formed in the repairing groove 11, the adjusting screw 43 can be rotated, and the adjusting screw 43 can drive the rib plate 4 to vertically move upwards or vertically move downwards until the tops of the two ends of the rib plate 4 are flush with the surface of the original pavement layer 1.

The implementation principle of the asphalt concrete pavement maintenance structure of the embodiment of the application is as follows: the support table 12 has a support effect on the reinforcement cage ring 21, so that the position between the repair base layer 2 and the original road layer 1 in the vertical direction is stable, the rigid repair base layer 2 is not easy to settle, and the service life of the asphalt concrete road surface after maintenance is prolonged; when a vehicle runs out of the junction between the original road layer 1 and the repair surface layer 3, part of load of the vehicle acts on the rib plates 4, the load borne by the rib plates 4 is further transmitted to the connecting plates 52 and the horizontal plates 51, and the horizontal plates 51 are abutted against the whole support platform 12, so that the load can be dispersed on the whole support platform 12 to a certain extent; meanwhile, along with the gradual approach of the vehicle to the boundary between the original road layer 1 and the repair base layer 2, the vehicle is gradually guided by the rib plates 4 to be gradually far away from the surfaces of the original road layer 1 and the repair base layer 2, so that the stress of the boundary between the original road layer 1 and the repair base layer 2 is further reduced, the possibility of damage of the boundary between the original road layer 1 and the repair base layer 2 is reduced, and the service life of the asphalt concrete pavement after maintenance is prolonged.

The embodiment also discloses a method for maintaining the asphalt concrete pavement, which comprises the following steps:

s1: digging a placing groove 14, a first clamping groove 13 and a repairing groove 11 at a damaged position of a road surface to enable the inner side of the placing groove 14 to form a supporting table 12, placing a horizontal plate 51 on the supporting table 12 and into the placing groove 14 at the same time, enabling a connecting plate 52 to be vertically upward, placing a rib plate 4 in the first clamping groove 13, and enabling the rib plate 4 to be clamped with the connecting plate 52 at the same time;

s2: binding a reinforcement cage ring 21, and enabling the reinforcement cage ring 21 perpendicular to the rib plate 4 to penetrate through the avoidance groove 41;

s3: pouring concrete at the bottom of the repairing groove 11, tamping, paving the anti-cracking net 22, pouring the concrete at least twice, and forming the repairing base layer 2 after hardening;

s4: and paving asphalt concrete on the surface of the repair base layer 2 to obtain a repair surface layer 3.

The implementation principle of the asphalt concrete pavement maintenance method in the embodiment of the application is as follows: firstly digging a placing groove 14, a first clamping groove 13 and a repairing groove 11, then arranging a connecting part 5 and a rib plate 4 in sequence, and then binding a steel bar cage ring 21 according to the position of a avoiding groove 41 at the bottom of the rib plate 4; secondly, pouring concrete in a layered mode, namely pouring the ground concrete and tamping to enable the ground concrete to be compact, then paving an anti-cracking net 22 above the ground concrete, fixedly connecting the anti-cracking net 22 with the steel reinforcement cage ring 21, then continuously pouring the concrete, and then tamping and paving the next layer of anti-cracking net 22 until the repairing base layer 2 is completely paved and hardened; then paving asphalt concrete to obtain a repairing surface layer 3. Excavation, installation ligature, each part of pouring go on in proper order, make the construction comparatively convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: 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

1. The utility model provides a bituminous concrete road surface maintenance structure which characterized in that: including repairing groove (11), it sets up in former road layer (1) to repair groove (11), repair groove (11) interior from the bottom up has set gradually and has repaired basic unit (2) and repair surface course (3), the bottom fixedly connected with brace table (12) of repairing groove (11) inner wall, brace table (12) and former road layer (1) body coupling, it encloses (21) to repair basic unit's (2) embedded steel reinforcement cage circle that is equipped with, and steel reinforcement cage circle (21) are located brace table (12) upper portion, it forms by concrete placement to repair basic unit (2).

2. The asphalt concrete pavement maintenance structure according to claim 1, characterized in that: the anti-cracking net is characterized in that the anti-cracking net (22) is arranged in the middle of the steel reinforcement cage ring (21), and the anti-cracking net (22) is fixedly connected with the steel reinforcement cage ring (21).

3. The asphalt concrete pavement maintenance structure according to claim 1, characterized in that: a plurality of vertical first draw-in grooves (13) are seted up from repairing groove (11) edge in original road layer (1), the edge of groove (11) is repaired at draw-in groove perpendicular to its place, repair surface course (3) are seted up second draw-in groove (31) with first draw-in groove (13) one-to-one from repairing groove (11) edge, first draw-in groove (13) inside callipers is equipped with gusset (4), gusset (4) card is located in second draw-in groove (31) simultaneously, the top and original road layer (1) surface and repair surface course (3) surface of gusset (4) flush, gusset (4) bottom is seted up dodge groove (41) that are used for dodging steel reinforcement cage circle (21).

4. The asphalt concrete pavement maintenance structure according to claim 3, characterized in that: standing groove (14) have been seted up in original road layer (1), standing groove (14) begin from the upper surface of brace table (12), extend along keeping away from the direction level of repairing groove (11) middle part gradually, be provided with connecting portion (5) on brace table (12), connecting portion (5) are placed in horizontal plate (51) and the connecting plate (52) of fixed connection in horizontal plate (51) upper surface middle part position of brace table (12) including the level, horizontal plate (51) stretch into in standing groove (14), connecting plate (52) vertical setting just with the inner wall butt of repairing groove (11), spread groove (42) have been seted up to the bottom of gusset (4), connecting plate (52) are located spread groove (42).

5. The asphalt concrete pavement maintenance structure according to claim 4, wherein: the bottom of the connecting plate (52) is provided with a plurality of through holes (521).

6. The asphalt concrete pavement maintenance structure according to claim 4, wherein: the side wall of the connecting plate (52) is fixedly connected with vertical clamping strips (522), the two clamping strips (522) form a group, and the rib plate (4) is clamped between the two clamping strips (522) in the group.

7. The asphalt concrete pavement maintenance structure according to claim 4, wherein: the thickness of the rib plate (4) is gradually reduced from the position of the connecting groove (42) to the direction close to the two ends of the rib plate (4), the height from the two ends of the top of the rib plate (4) to the middle of the rib plate is gradually increased, the height difference between the two ends of the top of the rib plate (4) and the middle of the rib plate is 0.2-0.4mm, and the two ends of the rib plate (4) are flush with the original pavement.

8. The asphalt concrete pavement maintenance structure according to claim 4, wherein: the middle of the rib plate (4) is rotatably connected with an adjusting screw rod (43), the adjusting screw rod (43) is vertically arranged, the adjusting screw rod (43) is in threaded connection with the connecting plate (52), a counter bore (44) is formed in the top of the rib plate (4), and the top of the adjusting screw rod (43) is located in the counter bore (44).

9. The asphalt concrete pavement maintenance structure according to claim 4, wherein: be connected with the protection sleeve on connecting plate (52), the protection sleeve is including a plurality of protection section of thick bamboo (6) that cup joint the connection in proper order, and the bottom of the inner wall of a protection section of thick bamboo (6) and top fixedly connected with anticreep circle (61) of outer wall are gone out with connecting plate (52) fixed connection, and thread groove (45) have been seted up to the bottom of gusset (4), and the protection section of thick bamboo (6) in the outside are located thread groove (45) and with gusset (4) threaded connection.

10. The asphalt concrete pavement maintenance method of claims 1-9, characterized in that: the method comprises the following steps: s1: digging a placing groove (14), a first clamping groove (13) and a repairing groove (11) at a damaged position of a road surface, forming a supporting table (12) on the inner side of the placing groove (14), placing a horizontal plate (51) on the supporting table (12) and simultaneously in the placing groove (14), enabling a connecting plate (52) to be vertically upward, placing a rib plate (4) in the first clamping groove (13), and simultaneously clamping the rib plate (4) and the connecting plate (52);

s2: binding a reinforcement cage ring (21), and enabling the reinforcement cage ring (21) to penetrate through the avoidance groove (41) when being perpendicular to the rib plate (4);

s3: pouring concrete at the bottom of the repairing groove (11), tamping, paving an anti-cracking net (22), pouring the concrete at least twice, and hardening to form a repairing base layer (2);

s4: and paving asphalt concrete on the surface of the repaired base layer (2) to obtain a repaired surface layer (3).