CN216237951U

CN216237951U - Pavement structure for joint of new and old concrete pavements in road widening

Info

Publication number: CN216237951U
Application number: CN202122613944.4U
Authority: CN
Inventors: 王宁; 袁珍珍; 徐启
Original assignee: Shandong Luda Engineering Design Consulting Co ltd
Current assignee: Shandong Luda Engineering Design Consulting Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-08
Anticipated expiration: 2031-10-28

Abstract

The application discloses a road surface structure that is arranged in new and old road surface of road widening concrete to meet department relates to road surface engineering technical field, and its technical scheme includes: including being the old road bed of echelonment setting, locate the new road bed of old road bed one side, set up the recess on the ladder of old road bed, the bottom of new road bed is equipped with the lug with recess looks adaptation, the lug sets up in the recess through pouring cement mortar, and this application can improve new and old road bed and connect not stable enough when using, through the long-time rolling of vehicle, the cracked problem can appear.

Description

Pavement structure for joint of new and old concrete pavements in road widening

Technical Field

The application relates to the technical field of road surface engineering, in particular to a road surface structure at the joint of a new road surface and an old road surface of concrete in road widening.

Background

With the high-speed development of economy in China, traffic flow is increasingly increased, the width of a road surface is insufficient, traffic jam is caused, and normal travel of people is affected, so that the road needs to be widened and modified to meet the requirement of economic development.

At present, in order to improve the efficiency of construction, often adopt the mode of concatenation to splice new and old road surface, mosaic structure includes old road bed and old road bed, is provided with the recess on the old road bed, and the inside of every recess all is provided with fossil fragments, and the right-hand member at the top of every fossil fragments all is provided with the steel sheet, the bottom fixed connection of steel sheet and new road bed.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the new roadbed and the old roadbed are connected only by clamping the keels fixedly connected with the new roadbed into the grooves of the old roadbed, the mode is not stable enough, and cracks can occur after long-time rolling of vehicles, and the problem needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that cracks can occur due to the fact that connection of a new roadbed and an old roadbed is not stable enough and the new roadbed and the old roadbed are rolled for a long time by vehicles, the application provides a pavement structure for the connection part of the new roadbed and the old concrete pavement in road widening.

The application provides a road surface structure that is arranged in new and old road surface of concrete to meet department in road broadening, adopts following technical scheme:

the utility model provides a road surface structure that is arranged in road widening new and old road surface of concrete to meet department, includes the old road bed that is the echelonment setting, locates the new road bed of old road bed one side, set up flutedly on the ladder of old road bed, the bottom of new road bed is equipped with the lug with recess looks adaptation, the lug passes through the setting of pouring cement mortar in the recess.

Through adopting above-mentioned technical scheme, the cement mortar through the pouring will be fixed in the recess with new road bed fixed connection's lug, realize being connected of new road bed and old road bed, make new road bed can be tightly the card on the ladder of old road bed, improve new and old road bed and connect unstable inadequately, through the long-time rolling of vehicle, the problem of crack may appear.

Optionally, a U-shaped connecting plate is arranged between the old roadbed and the new roadbed, one end of the U-shaped connecting plate is clamped in the old roadbed, and the other end of the U-shaped connecting plate is clamped in the new roadbed.

Through adopting above-mentioned technical scheme, the both ends of the U-shaped connecting plate that sets up block respectively in old road bed and new road bed, can further make new road bed, the connection that old road bed can be more stable, can further improve new and old road bed and connect unstable inadequately, through the long-time rolling of vehicle, the problem of crack may appear.

Optionally, a triangular steel beam is arranged below the U-shaped connecting plate between the old roadbed and the new roadbed, one half of the triangular steel beam is embedded into the new roadbed, and the other half of the triangular steel beam is embedded into the old roadbed.

By adopting the technical scheme, the new roadbed and the old roadbed are respectively embedded into half of the volume of the triangular steel beam, so that the connection part of the new roadbed and the old roadbed can be kept stable by depending on the stability of the triangular steel beam, the steel beam can uniformly share the pressure borne by the connection part, and the influence caused by the longitudinal stress difference generated by the new roadbed and the old roadbed along with the use is counteracted.

Optionally, bonding layers are laid on the new roadbed and the old roadbed.

By adopting the technical scheme and the arranged bonding layer, longitudinal splitting of the pavement structure of the combination part of the new roadbed and the old roadbed can be reduced, and the overall stability of combination of the new roadbed and the old roadbed is further improved.

Optionally, the bonding layer includes a water-resisting layer, a sand cushion layer and an asphalt surface layer arranged from bottom to top.

Through adopting above-mentioned technical scheme, the water barrier of setting can reduce the moisture that flows into in the road bed to the life-span of extension road bed, the sand cushion layer of setting can ooze the rainwater through the sand cushion layer to the peripheral earth of new road bed, reduces the ponding of new road base portion, the life of extension road.

Optionally, a water guide pipe is arranged on the water-resisting layer.

Through adopting above-mentioned technical scheme, the aqueduct of setting can accelerate the discharge of rainwater.

Optionally, the water barrier layer is made of two cloth-one film geotechnical impermeable materials.

Through adopting above-mentioned technical scheme, the water barrier adopts two cloth one membrane geotechnological impermeable materials, can play good waterproof effect, makes the rainwater ooze in the earth along new road base periphery, reduces new road base portion ponding, the life of extension road.

Optionally, a square block is arranged on the contact surface of the new roadbed and the old roadbed, and a square groove matched with the square block is arranged on the old roadbed.

By adopting the technical scheme, the square blocks and the square grooves are matched, so that the new road and the old road can be in closer contact, and the new road and the old road can be connected more stably.

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

1. the arranged groove is matched with the lug, the lug fixedly connected with the new roadbed is fixed in the groove through the poured cement mortar, so that the connection between the new roadbed and the old roadbed is realized, the new roadbed can be tightly clamped on the steps of the old roadbed, and the problem that the connection between the new roadbed and the old roadbed is not stable enough and cracks can appear after long-time rolling by vehicles is solved;

2. the two ends of the U-shaped connecting plate are clamped in the old roadbed and the new roadbed respectively, the triangular steel beams are arranged, the new roadbed and the old roadbed are embedded into half of the volume of the triangular steel beams respectively, the stability of the triangular steel beams can be relied on, the connection parts of the new roadbed and the old roadbed are kept stable, the pressure borne by the connection parts can be uniformly shared by the steel beams, and the influence caused by the longitudinal stress difference of the new roadbed and the old roadbed along with use is counteracted.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Reference numerals: 1. old roadbed; 2. a new roadbed; 21. a square block; 3. a bump; 31. a U-shaped connecting plate; 4. a triangular steel beam; 5. a bonding layer; 51. a water barrier layer; 511. a water conduit; 52. a sand cushion layer; 53. and (5) an asphalt surface layer.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a road surface structure that is arranged in new and old road surface of concrete to meet department in road widening, refer to fig. 1, including being old road bed 1 that the echelonment set up, be provided with new road bed 2 on the ground of old road bed 1 one side, the lateral wall of new road bed 2 offsets with the lateral wall of old road bed 1 to set up flutedly on the ladder of old road bed 1, the bottom of new road bed 2 is equipped with lug 3 with recess looks adaptation, lug 3 sets up in the recess through pouring cement mortar.

In addition, a U-shaped connecting plate 31 is arranged between the old roadbed 1 and the new roadbed 2, one end of the U-shaped connecting plate 31 is clamped in the old roadbed 1, the other end of the U-shaped connecting plate 31 is clamped in the new roadbed 2, the connection between the old roadbed 1 and the new roadbed 2 can be primarily enhanced, a triangular steel beam 4 is arranged below the U-shaped connecting plate 31 between the old roadbed 1 and the new roadbed 2, one half of the triangular steel beam 4 is embedded into the new roadbed 2, and the other half of the triangular steel beam 4 is embedded into the old roadbed 1, so that the connection between the new roadbed 2 and the old roadbed 1 can be kept stable by depending on the stability of the triangular steel beam 4, the steel beam can uniformly share the pressure borne by the connection, the influence caused by the longitudinal stress difference generated along with the use of the new roadbed 1 and the old roadbed 1 is counteracted, the new roadbed 2 and the old roadbed 1 can be further stably connected, the unstable connection between the new roadbed 2 and the old roadbed 1 can be further improved, after long-time rolling of the vehicle, a problem of cracks may occur.

The bonding layer 5 is paved on the new roadbed 2 and the old roadbed 1, longitudinal splitting of a pavement structure at the joint part of the new roadbed 2 and the old roadbed 1 can be reduced, the overall stability of the combination of the new roadbed 2 and the old roadbed 1 is further improved, the bonding layer 5 comprises a water-resisting layer 51, a sand cushion layer 52 and an asphalt surface layer 53 which are arranged from bottom to top, the water-resisting layer 51 is made of two cloth-one film geotechnical anti-seepage materials, a good waterproof effect can be achieved, rainwater seeps out along the soil around the new roadbed 2, accumulated water at the bottom of the new roadbed 2 is reduced, the service life of the road is prolonged, the water-guiding pipe 511 is arranged on the water-resisting layer 51, the water-guiding pipe 511 can further guide water to the two sides of the roadbed, and the water is discharged to prolong the service life of the road.

The implementation principle of the pavement structure at the joint of the new and old concrete pavements in the road widening process is as follows: the convex blocks 3 fixedly connected with the new roadbed 2 are fixed in the grooves through the poured cement mortar, so that the connection between the new roadbed 2 and the old roadbed 1 is realized, the new roadbed 2 can be tightly clamped on the steps of the old roadbed 1, two ends of the U-shaped connecting plate 31 are respectively clamped in the old roadbed 1 and the new roadbed 2, the new roadbed 2 and the old roadbed 1 are respectively embedded into half of the volume of the triangular steel beam 4, the connection part of the new roadbed 2 and the old roadbed 1 can be kept stable by depending on the stability of the triangular steel beam 4, the steel beams can uniformly share the pressure borne by the connection part, and the influence caused by the longitudinal stress difference generated by the new roadbed 2 and the old roadbed 1 along with the use is offset, so that the problems that the connection of the new roadbed 1 and the old roadbed 1 is not stable enough, and cracks can be possibly generated by long-time rolling of vehicles can be improved.

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. A road surface structure for the joint of new and old concrete road surfaces in road widening is characterized in that: including being old road bed (1) that the echelonment set up, locate new road bed (2) of old road bed (1) one side, set up flutedly on the ladder of old road bed (1), the bottom of new road bed (2) is equipped with lug (3) with recess looks adaptation, lug (3) set up in the recess through pouring cement mortar.

2. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 1, characterized in that: be equipped with U-shaped connecting plate (31) between old road bed (1) and new road bed (2), the one end card of U-shaped connecting plate (31) is in old road bed (1), the other end card of U-shaped connecting plate (31) is in new road bed (2).

3. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 1, characterized in that: a triangular steel beam (4) is arranged below a U-shaped connecting plate (31) between the old roadbed (1) and the new roadbed (2), one half of the triangular steel beam (4) is embedded into the new roadbed (2), and the other half of the triangular steel beam is embedded into the old roadbed (1).

4. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 1, characterized in that: and the new roadbed (2) and the old roadbed (1) are paved with a bonding layer (5).

5. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 4, characterized in that: the bonding layer (5) comprises a water-resisting layer (51), a sand cushion layer (52) and an asphalt surface layer (53) which are arranged from bottom to top.

6. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 5, characterized in that: and a water guide pipe (511) is arranged on the waterproof layer (51).

7. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 5, characterized in that: the waterproof layer (51) is made of two cloth-one film geotechnical impermeable materials.

8. The pavement structure for the junction of new and old concrete pavements in road widening according to claim 1, characterized in that: be provided with square piece (21) on the face that new road bed (2) and old road bed (1) contacted, be provided with the square groove with square piece (21) looks adaptation on old road bed (1).