CN218345825U

CN218345825U - Karst area anti roadbed structure that collapses

Info

Publication number: CN218345825U
Application number: CN202222492024.6U
Authority: CN
Inventors: 曲广博; 张乾; 王少文; 田忠才; 刘炫良; 胡路伟; 柴宁宁; 邓夏瑞; 郭泽民; 胡炙帅
Original assignee: Shandong Road and Bridge Construction Group Co Ltd
Current assignee: Shandong Road and Bridge Construction Group Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-20
Anticipated expiration: 2032-09-20

Abstract

The utility model relates to a karst area highway construction technical field discloses a karst area roadbed structure that resists collapsing, and it includes shock attenuation check room net, shock attenuation check room net sets up to cellular, shock attenuation check room net lays on the ground face, be provided with first supporting layer in the shock attenuation check room net, first supporting layer top is provided with the second supporting layer. The method has the effect of reducing the possibility of roadbed collapse in the karst area.

Description

Karst area anti roadbed structure that collapses

Technical Field

The application relates to the field of karst area highway construction technology, in particular to an anti-collapse roadbed structure in a karst area.

Background

Karst refers to the special topographic and hydrogeological phenomena generated by soluble rock strata such as limestone under the long-term chemical action and mechanical action of flowing water. In karst areas, limestone is eroded by flowing water containing carbon dioxide for long periods of time to form a large number of underground caverns.

In view of the above-mentioned related art, the inventors found that heavy vehicles vibrate the road surface when driving, the road vibration may cause subgrade vibration, the subgrade vibration may cause foundation vibration, and in karst areas, the subgrade vibration may cause karst cave vibration, which may increase the possibility of karst cave collapse, thereby increasing the possibility of subgrade collapse.

SUMMERY OF THE UTILITY MODEL

In order to reduce the possibility that the subgrade collapses in the karst area, the application provides a subgrade structure that resists collapse in the karst area.

The application provides a karst area anti roadbed structure that collapses adopts following technical scheme:

the utility model provides a karst area roadbed structure that collapses, includes the shock attenuation check room net, the shock attenuation check room net sets up to honeycomb, the shock attenuation check room net lays on the ground face, be provided with first supporting layer in the shock attenuation check room net, first supporting layer top is provided with the second supporting layer.

Through adopting above-mentioned technical scheme, shock attenuation check room net is because its honeycomb form for the road bed receives the pressure dispersion on road surface, and the stability of road bed improves, thereby has reduced the vibrations of road bed, and then has reduced the vibrations of underground karst cave, makes the possibility that the karst cave collapses reduce, thereby reduces the possibility that the road bed in karst area collapses.

Optionally, a buffer row is arranged below the damping grid, and the buffer row is made of rubber.

By adopting the technical scheme, the buffer row is made of rubber, so that the buffer row has a buffer effect on the damping grid and further has a buffer effect on the roadbed; on the other hand, the pressure on the damping grid chamber net is shared, so that the damping grid chamber net is not easy to crush, and the service life of the damping grid chamber net is prolonged.

Optionally, the buffer row includes many fixed connection's bumper bar, many the bumper bar is arranged along rather than length direction vertically direction, the wave recess has been seted up to shock attenuation check room net bottom surface, recess and bumper bar top surface looks adaptation, top surface and recess joint are arranged in the buffer.

By adopting the technical scheme, the wavy grooves on the bottom surface of the damping grid room net are clamped with the top surface of the buffer row, so that the damping grid room net and the buffer row are matched more tightly, and the stability of the damping grid room net laid on the buffer row is improved; secondly, the wavy grooves can be formed by arranging a plurality of triangular grooves, so that the stability of the damping grid is improved, and the stability of the roadbed is further improved; in addition, the buffer row is made of rubber, so that the friction force between the shock absorption grid room net and the buffer row is increased, and the stability of the shock absorption grid room net supported by the buffer row is also improved.

Optionally, the first supporting layer is made of mortar filling material, and the mortar filling material of the first supporting layer is poured into the damping grid.

By adopting the technical scheme, the mortar filling material of the first supporting layer is poured into the damping grid cell net, so that horizontal pressure is applied to the damping grid cell net, and the damping grid cell net is more stable in the horizontal direction; on the other hand, due to the arrangement of the damping grid chamber net, pouring of the mortar filling material is more uniform, and therefore the uniformity inside the first supporting layer is improved.

Optionally, geotechnical cloth has been laid between first supporting layer and the second supporting layer, many sealing strips of fixedly connected with on the geotechnical cloth, but sealing strip water absorption inflation.

Through adopting above-mentioned technical scheme, when the road surface infiltration oozes on the first supporting layer, the sealing rod can absorb the water that oozes to it seeps to the underground to reduce under water, and then reduces the influence of infiltration to the underground cavern.

Optionally, the number of the geotextile layers is two, the sides of the two geotextile layers fixed with the water stop strips are adjacent, and the water stop strip on one geotextile layer is clamped between the two adjacent water stop strips on the other geotextile layer.

Through adopting above-mentioned technical scheme, one the sealing rod joint on the geotechnological cloth is between two adjacent sealing rods on another geotechnological cloth, after the sealing rod water absorption inflation, the joint gets inseparabler between the adjacent sealing rod to strengthen the effect of blockking to infiltration.

Optionally, the second supporting layer includes a reinforcing mesh, the reinforcing mesh is laid above the geotextile, and asphalt concrete filler is poured into the reinforcing mesh.

By adopting the technical scheme, the reinforcing mesh is laid above the geotextile, and then the asphalt concrete filler is poured into the reinforcing mesh, so that the construction of the second supporting layer is completed, the reinforcing mesh plays a role in reinforcing the asphalt concrete filler, and the stability of the second supporting layer is improved.

Optionally, a reinforcing anchor rod is arranged on the reinforcing steel bar net, the reinforcing anchor rod penetrates through the geotextile and is inserted into the first supporting layer, a grouting hole is formed in the reinforcing anchor rod, and the grouting hole is internally used for pouring asphalt concrete filler.

By adopting the technical scheme, the reinforcing anchor rod penetrates through the geotextile and is inserted into the first supporting layer, the asphalt concrete filler is poured into the grouting hole, and the first supporting layer, the waterproof layer and the second supporting layer are connected together, so that the connection strength of the inner structure of the roadbed is enhanced.

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

1. the shock absorption grid cell net is in a honeycomb form, so that the pressure of a road surface on a roadbed is dispersed, the stability of the roadbed is improved, the vibration of the roadbed is reduced, the vibration of an underground karst cave is reduced, the possibility of cave collapse is reduced, and the possibility of the cave collapse of the roadbed in a karst area is reduced;

2. the wavy grooves on the bottom surface of the damping grid room net are clamped with the top surface of the buffer row, so that the damping grid room net and the buffer row are matched more tightly, and the stability of the damping grid room net laid on the buffer row is improved; secondly, the wavy grooves can be formed by arranging a plurality of triangular grooves, so that the stability of the damping grid room net is improved, and the stability of the roadbed is improved; in addition, the buffer row is made of rubber, so that the friction force between the shock absorption grid room net and the buffer row is increased, and the stability of the shock absorption grid room net supported by the buffer row is also improved;

3. one the sealing rod joint on geotechnical cloth is in between two adjacent sealing rods on another geotechnical cloth, and after the sealing rod absorbed water and expanded, the joint between adjacent sealing rods is tighter, thereby strengthening the blocking effect on the infiltration.

Drawings

FIG. 1 is a sectional view of the overall structure of an embodiment of the present application;

FIG. 2 is a top view of a portion of the structure of the embodiment of the present application, which is mainly used for showing the damping grid;

FIG. 3 is a left side view of a part of the structure of the embodiment of the present application, which is mainly used for showing a waterproof layer;

FIG. 4 is a top view of a portion of the structure of the embodiment of the present application, which is mainly used for showing the second supporting layer;

fig. 5 is a partial structural cross-sectional view of an embodiment of the present application, primarily illustrating a reinforcement bolt.

Description of the reference numerals: 1. a shock-absorbing layer; 11. buffering and draining; 111. a buffer rod; 12. a shock absorbing cellular network; 121. a shock-absorbing compartment; 122. a groove; 2. a first support layer; 3. a waterproof layer; 31. geotextile; 32. a water stop bar; 4. a second support layer; 41. a reinforcing mesh; 42. a connecting plate; 43. reinforcing the anchor rod; 431. grouting holes; 44. asphalt concrete filler; 5. and (5) foundation construction.

Detailed Description

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

The embodiment of the application discloses anti roadbed structure that collapses in karst area.

Referring to fig. 1, the anti-collapse roadbed structure in the karst region comprises a damping layer 1, wherein the damping layer 1 is arranged on the surface of a foundation 5 and used for buffering the vibration of a roadbed. Damping layer 1 intussuseption is filled with first supporting

layer

2, and 2 top surfaces of first supporting layer are provided with waterproof layer 3, and waterproof layer 3 is used for reducing the water that infiltrates in ground 5 down. And a second supporting layer 4 is arranged on the top surface of the waterproof layer 3, and the second supporting layer 4 and the first supporting layer 2 are both used for reinforcing the roadbed.

Referring to fig. 1 and 2, the shock absorption layer 1 includes a buffer row 11 and a shock absorption grid mesh 12, the buffer row 11 is laid on the surface of the foundation 5, and the shock absorption grid mesh 12 is laid on the top surface of the buffer row 11. Buffering row 11 includes many parallel arrangement's buffering stick 111, and buffering stick 111 length direction level sets up, and many buffering sticks 111 are arranged along rather than length direction vertically direction, and fixed connection between two adjacent buffering sticks 111, and buffering stick 111 sets up to the rubber material. Shock attenuation check room net 12 sets up to cellular, and shock attenuation check room net 12 includes multiunit shock attenuation check room 121, and the material of shock attenuation check room 121 sets up to high density polyethylene, welds between the multiunit shock attenuation check room 121. The damping cells 121 are formed in a diamond shape, and the longitudinal direction of the damping cells 121 is perpendicular to the longitudinal direction of the damping rods 111. The bottom surface of the shock absorption grid chamber 121 is provided with a wave-shaped groove 122 along the length direction, the wave-shaped groove 122 is matched with the shape of the top surface of the buffer row 11, and the wave-shaped groove 122 is clamped with the top surface of the buffer row 11.

Lay buffer row 11 on 5 faces of foundation, lay shock attenuation check room 121 on buffer row 11 again, during the laying, the recess 122 and the buffer row 11 joint of shock attenuation check room 121 bottom surface to accomplish the construction of buffer layer 1. When vibration is generated on the road surface, the shock absorption cells 121 disperse the pressure applied to the roadbed due to the honeycomb arrangement form, so that the bearing stability of the roadbed is improved, and the shock absorption effect is achieved. The buffer row 11 is located below the shock absorption cells 121, supports the shock absorption cells 121, and buffers pressure received by the shock absorption cells 121, so that pressure received by a roadbed is further buffered, and a shock absorption effect is achieved.

Referring to fig. 1, the first supporting layer 2 is made of mortar filling material, and the mortar filling material is filled in the damper cell 121.

Referring to fig. 1 and 3, the waterproof layer 3 is laid on the top surface of the first supporting layer 2, the waterproof layer 3 comprises two geotextile sheets 31, a plurality of water stop strips 32 are fixedly connected to one adjacent sides of the two geotextile sheets 31, the length directions of the water stop strips 32 are perpendicular to the length direction of the buffer rod 111, the plurality of water stop strips 32 are arranged at intervals along the direction perpendicular to the length direction, and the water stop strips 32 are made of water-swelling rubber. Each water stop strip 32 on one geotextile 31 is clamped between two adjacent water stop strips 32 on the other geotextile 31.

And (3) clamping the water stop strips 32 on the two geotextile sheets 31, and paving the two geotextile sheets 31 on the surface of the first supporting layer 2, thereby completing the construction of the waterproof layer 3. When the road surface water permeates in waterproof layer 3, the expansion that absorbs water of sealing strip 32, the joint between the sealing strip 32 after the expansion gets inseparabler, has reduced the water that infiltrates in the ground 5 on the one hand, and on the other hand has strengthened the inside connection of waterproof layer 3.

Referring to fig. 1, 4 and 5, the second supporting layer 4 includes a reinforcing mesh 41, the reinforcing mesh 41 is disposed above the waterproof layer 3, the reinforcing mesh 41 is fixedly connected with a connecting plate 42 at four corners, a reinforcing anchor rod 43 is fixedly connected to the connecting plate 42, the reinforcing anchor rod 43 is axially vertically disposed, and the reinforcing anchor rod 43 penetrates through the waterproof layer 3 and is inserted into the first supporting layer 2, so as to fix the waterproof layer 3 and reinforce the connection between the first supporting layer 2, the waterproof layer 3 and the second supporting layer 4. The reinforcement mesh 41 is poured with asphalt concrete filler 44, the reinforcement anchor rod 43 is provided with grouting holes 431 along the axial direction thereof, and the grouting holes 431 are used for pouring the asphalt concrete filler 44.

The reinforcing mesh 41 is laid on the waterproof layer 3, the reinforcing anchor rods 43 are inserted into the first support layer 2, the asphalt concrete filler 44 is poured into the reinforcing mesh 41, and meanwhile, the asphalt concrete filler 44 is poured into the grouting holes 431 of the reinforcing anchor rods 43, so that the construction of the first support layer 2 and the connection of the first support layer 2, the waterproof layer 3 and the second support layer 4 are completed.

The implementation principle of the anti roadbed structure that collapses in karst area of this application embodiment does: laying the buffer row 11 on the surface of the foundation 5, laying the damping grid chambers 121 on the buffer row 11, and when laying, clamping the grooves 122 on the bottom surface of the damping grid chambers 121 with the buffer row 11, thereby completing the construction of the damping layer 1. And pouring mortar filler into the damping grid room mesh 12 to complete the construction of the first supporting layer 2. And (3) clamping the water stop strips 32 on the two geotextile sheets 31, and paving the two geotextile sheets 31 on the surface of the first supporting layer 2, thereby completing the construction of the waterproof layer 3. The reinforcing mesh 41 is laid on the waterproof layer 3, the reinforcing anchor rods 43 are inserted into the first support layer 2, the asphalt concrete filler 44 is poured into the reinforcing mesh 41, and meanwhile, the asphalt concrete filler 44 is poured into the grouting holes 431 of the reinforcing anchor rods 43, so that the construction of the first support layer 2 and the connection of the first support layer 2, the waterproof layer 3 and the second support layer 4 are completed. Through setting up buffer layer 1, the vibrations of road bed have been cushioned to reduce the vibrations of solution cavity, reduced the possibility that solution cavity collapses, thereby reduced the possibility that the road bed collapses.

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 karst area anti roadbed structure that collapses which characterized in that: including shock attenuation check room net (12), shock attenuation check room net (12) set up to cellular, shock attenuation check room net (12) are laid on ground (5) face, be provided with first supporting layer (2) in shock attenuation check room net (12), first supporting layer (2) top is provided with second supporting layer (4).

2. The karst area collapse-resistant roadbed structure of claim 1, wherein: a buffer row (11) is arranged below the damping grid room net (12), and the buffer row (11) is made of rubber.

3. The karst area collapse-resistant roadbed structure of claim 2, wherein: buffering row (11) are including many fixed connection's buffering stick (111), many buffering stick (111) are arranged along rather than length direction vertically direction, wave recess (122) have been seted up to shock attenuation check room net (12) bottom surface, recess (122) and buffering stick (111) top surface looks adaptation, buffering row (11) top surface and recess (122) joint.

4. The karst area collapse-resistant roadbed structure as claimed in claim 1, wherein: the first supporting layer (2) is made of mortar filling materials, and the mortar filling materials of the first supporting layer (2) are poured into the damping grid room net (12).

5. The karst area collapse-resistant roadbed structure as claimed in claim 1, wherein: geotechnical cloth (31) have been laid between first supporting layer (2) and second supporting layer (4), many sealing rod (32) of fixedly connected with on geotechnical cloth (31), but sealing rod (32) water absorption inflation.

6. The karst area collapse-resistant roadbed structure of claim 5, wherein: the geotextile (31) is provided with two pieces, one sides of the two geotextile (31) fixed with the water stop strips (32) are adjacent, and the water stop strip (32) on one geotextile (31) is clamped between the two adjacent water stop strips (32) on the other geotextile (31).

7. The karst area collapse-resistant roadbed structure of claim 5, wherein: the second supporting layer (4) comprises a steel mesh (41), the steel mesh (41) is laid above the geotextile (31), and asphalt concrete filler (44) is poured in the steel mesh (41).

8. The karst area collapse-resistant roadbed structure as claimed in claim 7, wherein: be provided with reinforcement stock (43) on reinforcing bar net (41), reinforcement stock (43) pass geotechnological cloth (31) and peg graft in first supporting layer (2), grout hole (431) have been seted up in reinforcement stock (43), be used for pouring into asphalt concrete filler (44) in grout hole (431).