CN214938890U

CN214938890U - New and old road bed widens concatenation roadbed structure

Info

Publication number: CN214938890U
Application number: CN202120677109.4U
Authority: CN
Inventors: 黄育江
Original assignee: Foshan Zhongkai Road Bridge Engineering Co ltd
Current assignee: Foshan Zhongkai Road Bridge Engineering Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-30
Anticipated expiration: 2031-04-01

Abstract

The utility model relates to a concatenation roadbed structure is widened to new and old road bed, its new road bed that includes old road bed, splices mutually with old road bed, one side of old road bed sets a plurality of steps, the step includes level concatenation face and slope concatenation face, be provided with the splice of connecting new road bed and old road bed on the step, this application has the condition effect that reduces new road bed and old road bed and appear transverse fracture.

Description

New and old road bed widens concatenation roadbed structure

Technical Field

The application relates to the technical field of road design, in particular to a new and old roadbed widening spliced roadbed structure.

Background

In recent years, with rapid development of Chinese economy and rapid increase of traffic volume, the number of road transportation requirements in China is increased year by year, the traffic flow of some existing highways is saturated, and widening and modification are urgently needed to improve the traffic capacity of the highways, so that the rapid development requirements of modern economy are met.

In view of the related art in the above, the inventors consider that there are drawbacks in that: at present, the settlement deformation of the old roadbed reaches a stable state, and the new roadbed may generate compression deformation and settlement deformation, so that the new roadbed and the old roadbed have different height differences to generate differential settlement, and further the pavement structure of the joint part of the new roadbed and the old roadbed has serious longitudinal crack separation, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to reduce the condition that the longitudinal cracking separation appears in new and old road bed combination position, this application provides a new and old road bed and widens concatenation roadbed structure.

The application provides a pair of new and old road bed widens concatenation roadbed structure adopts following technical scheme:

the utility model provides a concatenation roadbed structure is widened to new and old road bed, includes old road bed, the new road bed of splicing mutually with old road bed, a plurality of steps are set to one side of old road bed, the step includes that the level splices the face and the slope splices the face, be provided with the splice of connecting new road bed and old road bed on the step.

Through adopting above-mentioned technical scheme, old road bed sets to a plurality of steps, sets the concatenation face of vertical direction to the inclined plane to can increase the area of contact of new and old road bed, can also produce ascending support component force to new road bed, thereby can improve the compressive property of new road bed, new road bed and old road bed can be connected to the splice in addition, thereby can further reduce the condition that new road bed collapses to the road both sides.

Optionally, the new roadbed comprises an asphalt layer, an asphalt drainage layer, a cement stabilized gravel layer and a gravel base layer from top to bottom in sequence.

Through adopting above-mentioned technical scheme, the top of new road bed is provided with pitch layer and pitch drainage blanket, and the bottom is provided with cement stabilization gravel layer and rubble basic unit, can reduce the risk that new road bed subsides downwards, improves the compressive capacity and the stability of new road bed self.

Optionally, the splicing pieces comprise horizontal steel bars horizontally inserted into the inclined splicing surfaces and vertical steel bars vertically inserted into the horizontal splicing surfaces, and the ends of the horizontal steel bars and the ends of the vertical steel bars far away from the old roadbed are mutually fixed in a cross mode.

Through adopting above-mentioned technical scheme, the new road bed can be supported in horizontal direction and vertical direction to horizontal reinforcement and perpendicular reinforcing bar, the risk that can effectual reduction horizontal position to can avoid the risk that the horizontal fracture appears in the junction of old road bed and new road bed, in addition, crisscross fixed can improve the firm degree of splice between horizontal reinforcement and the perpendicular reinforcing bar, further reduce the condition that the fracture separation appears in the new road bed.

Optionally, the ends of the plurality of transverse steel bars far away from the old roadbed are level, and the ends of the plurality of vertical steel bars far away from the ground are level.

Through adopting above-mentioned technical scheme, extension horizontal reinforcement and perpendicular reinforcing bar for the perpendicular reinforcing bar that is located old roadbed outside can fix a plurality of horizontal reinforcing bars simultaneously, thereby forms a crisscross latticed, and then can improve the firm degree of horizontal reinforcement and perpendicular reinforcing bar, and the condition that reduces the junction between new roadbed and the old roadbed and appear the fracture.

Optionally, a reinforcing net is fixed on the horizontal splicing surface, and one end of the reinforcing net far away from the horizontal splicing surface is fixed inside the new roadbed.

Through adopting above-mentioned technical scheme, the setting of reinforcing net can further connect old road bed and new road bed on the one hand, reduces the condition that fracture, phase separation appear in old road bed and new road bed junction, and on the other hand, reinforcing net construction convenience, it is laborsaving to save trouble, can effectively shorten the time limit for a project, reduces construction cost.

Optionally, the reinforcing mesh is made of a stainless steel metal mesh.

Through adopting above-mentioned technical scheme, the reinforcing net of metal material is difficult to break down, can prolong the life of reinforcing net.

Optionally, a grating is arranged on a contact surface of the gravel base layer, which is in contact with the cement-stabilized gravel layer.

Through adopting above-mentioned technical scheme, the bearing capacity of new road bed can be increased to the grid, and the grid can also the limited condition that reduces the bottom surface and appear collapsing and crackle to improve the life of new road bed.

Optionally, a predetermined inclination angle is arranged between the inclined splicing surface and the horizontal splicing surface.

By adopting the technical scheme, the preset inclination angle is 30-45 degrees, the contact area between the new roadbed and the old roadbed can be increased, so that the old roadbed has a supporting component force for upwards supporting the new roadbed, and the situation that the new roadbed and the old roadbed are longitudinally cracked and separated can be reduced.

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

1. the old roadbed is provided with a plurality of steps, so that the horizontal splicing surfaces can support the new roadbed, and the splicing surfaces in the vertical direction are provided with inclined surfaces, so that the contact area of the new roadbed and the old roadbed can be increased, and the old roadbed can generate upward supporting component force on the new roadbed, so that the old roadbed and the new roadbed can be indirectly connected preliminarily, the situation that the new roadbed and the old roadbed are separated and cracked is reduced, and the compression resistance of the new roadbed can be improved; in addition, the splicing pieces can connect the new roadbed and the old roadbed, so that the situation that the new roadbed collapses to the two sides of the road can be further reduced;

2. the horizontal reinforcement can support new road bed with perpendicular reinforcing bar in horizontal direction and vertical direction, can effectual reduction horizontal position's risk to can avoid old road bed and the risk of horizontal fracture to appear in the junction of new road bed, in addition, a plurality of horizontal reinforcements and the crisscross fixed firm degree that can improve the splice of perpendicular reinforcing bar, further reduce the condition that the fracture separation appears in new road bed.

Drawings

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

Description of reference numerals: 1. old roadbed; 10. a step; 101. horizontally splicing the surfaces; 102. the splicing surfaces are inclined; 2. a new roadbed; 21. an asphalt layer; 22. an asphalt drainage layer; 23. a cement stabilized rubble layer; 24. a macadam base; 240. a grid; 3. reinforcing the net; 31. transverse reinforcing steel bars; 32. and (5) erecting the steel bars.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses new and old road bed widens concatenation roadbed structure. Referring to fig. 1, a new and old roadbed widening spliced roadbed structure comprises a new roadbed 2, an old roadbed 1 and splices for connecting the new roadbed 2 and the old roadbed 1. The new roadbed 2 is horizontally provided with an asphalt layer 21, an asphalt drainage layer 22, a cement stabilized gravel layer 23 and a gravel base layer 24 from top to bottom in sequence. Wherein, the contact surface between rubble basic unit 24 and cement stabilized rubble layer 23 is provided with grid 240 horizontally, grid 240 not only can increase the bearing capacity of new road bed 2, but also can the limited reduction new road bed 2 the condition that appears collapsing and crackle appear to improve the life of new road bed 2.

The end part of the old roadbed 1 close to the new roadbed 2 is provided with four steps 10, and the steps 10 comprise a horizontal splicing surface 101 and an inclined splicing surface 102 for connecting the two horizontal splicing surfaces 101. A plurality of levels are spliced face 101 and are leveled mutually with the inside pitch drainage layer 22 of new road bed 2, cement stabilized gravel layer 23, rubble basic unit 24 respectively, and level is spliced face 101 and can be so that new road bed 2 obtains vertical ascending holding power in the horizontal direction, can tentatively reduce new road bed 2 and appear subsiding, the condition of collapsing and appear. The extending direction of the inclined splicing surface 102 and the extending direction of the horizontal splicing surface 101 form an inclined angle of 30-40 degrees, and the preset inclined angle can enable the new roadbed 2 to obtain upward supporting component force, further reduce settlement of the new roadbed 2, and enable different height differences between the new roadbed 2 and the old roadbed 1 to generate differential settlement.

And a reinforcing net 3 is fixedly arranged on the surfaces of the horizontal splicing surface 101, the asphalt drainage layer 22, the cement stabilized gravel layer 23 and the gravel base layer 24 respectively, wherein the reinforcing net 3 is fixed inside the horizontal splicing surface 101 and the new roadbed 2 through screws. In this embodiment, the reinforcing mesh 3 is made of stainless steel. Reinforcing net 3 fixed mounting can further connect old road bed 1 and new road bed 2 on the one hand on a plurality of levels splice face 101, reduces the fracture to appear in old road bed 1 and the 2 junctions of new road bed, the condition of phase separation, and on the other hand, reinforcing net 3 construction convenience, it is laborsaving to save trouble, can effectively shorten the time limit for a project, reduces construction cost.

In addition, vertical steel bars 32 are vertically fixed on the horizontal splicing surfaces 101, wherein the ends of the vertical steel bars 32 far away from the ground are level; the horizontal steel bars 31 are horizontally fixed on the inclined splicing surfaces 102, wherein the end parts of the horizontal steel bars 31 far away from the old roadbed 1 are flush. A plurality of vertical reinforcement 32 and horizontal reinforcement 31 are crisscross each other in order to form latticedly for horizontal reinforcement 31 and vertical reinforcement 31 can support new road bed 2 in horizontal direction and vertical direction, can effectively reduce the risk of new road bed 2 lateral shifting, thereby can avoid the condition that the fracture appears in old road bed 1 and the junction of new road bed 2, in addition, latticed setting can improve horizontal reinforcement 31 and vertical reinforcement 32's firm degree, further reduce the condition that the fracture separation appears in new road bed 2.

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 concatenation roadbed structure is widened to new and old road bed, its characterized in that, including old road bed (1), with new road bed (2) of old road bed (1) looks concatenation, one side of old road bed (1) sets to a plurality of steps (10), step (10) are including horizontal concatenation face (101) and slope concatenation face (102), be provided with the splice of connecting new road bed (2) and old road bed (1) on step (10).

2. The widening spliced roadbed structure of the old roadbed and the new roadbed according to claim 1, wherein the spliced roadbed structure comprises: the new roadbed (2) comprises an asphalt layer (21), an asphalt drainage layer (22), a cement stabilized gravel layer (23) and a gravel base layer (24) from top to bottom in sequence.

3. The widening spliced roadbed structure of the old roadbed and the new roadbed according to claim 1, wherein the spliced roadbed structure comprises: the splicing pieces comprise transverse steel bars (31) horizontally inserted into the inclined splicing surfaces (102) and vertical steel bars (32) vertically inserted into the horizontal splicing surfaces (101), and the end parts, far away from the old roadbed (1), of the transverse steel bars (31) and the end parts, far away from the old roadbed (1), of the vertical steel bars (32) are mutually crossed and fixed.

4. The widening spliced roadbed structure of the new roadbed and the old roadbed according to claim 3, wherein the spliced roadbed structure comprises: the end parts of the transverse reinforcing steel bars (31) far away from the old roadbed (1) are level, and the end parts of the vertical reinforcing steel bars (32) far away from the ground are level.

5. The widening spliced roadbed structure of the old roadbed and the new roadbed according to claim 1, wherein the spliced roadbed structure comprises: and a reinforcing net (3) is fixed on the horizontal splicing surface (101), and one end of the reinforcing net (3) far away from the horizontal splicing surface (101) is fixed inside the new roadbed (2).

6. The widening spliced roadbed structure of the new roadbed and the old roadbed according to claim 5, wherein the spliced roadbed structure comprises: the reinforcing net (3) is made of a stainless steel metal net.

7. The widening spliced roadbed structure of the new roadbed and the old roadbed according to claim 2, wherein the spliced roadbed structure comprises: and a grating (240) is arranged on the contact surface of the gravel base layer (24) and the cement-stabilized gravel layer (23).

8. The widening spliced roadbed structure of the old roadbed and the new roadbed according to claim 1, wherein the spliced roadbed structure comprises: a preset inclination angle is arranged between the inclined splicing surface (102) and the horizontal splicing surface (101).