CN210529395U

CN210529395U - Highway subgrade settlement-preventing structure

Info

Publication number: CN210529395U
Application number: CN201921351971.5U
Authority: CN
Inventors: 王友根; 吴辉
Original assignee: Hunan Yiyang Highway And Bridge Construction Co Ltd
Current assignee: Hunan Yiyang Highway And Bridge Construction Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-05-15
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a highway subgrade prevents subsiding structure, include rammer layer, basic unit, intermediate level and the surface course by supreme setting gradually down, the intermediate level adopts cement stabilization gravel to pave and forms, evenly be equipped with a plurality of first prefabs in the intermediate level, first prefab includes concrete body and many fastening reinforcing bars, many fastening reinforcing bars are radial the inserting and locate on the concrete body. Compared with the prior art, the utility model provides a highway subgrade anti-settlement structure, it utilizes first prefab to form the support to the intermediate level, promotes the support ability of intermediate level, first prefab includes concrete body and inserts the many reinforcing bars that locate on the concrete body, forms and grabs and holds the structure, makes the structural strength of intermediate level obtain the reinforcing; simultaneously, make the surface of ramming soil layer form the drainage space through setting up the second prefab, be favorable to the quick discharge of water, prevent effectively that the road bed from softening to promote the settlement performance of preventing of road bed.

Description

Highway subgrade settlement-preventing structure

Technical Field

The utility model relates to a roadbed structure, in particular to highway subgrade prevents subsiding structure.

Background

The roadbed is a foundation of a track or a road surface and is an earth structure formed by excavation or filling. The roadbed mainly has the functions of providing necessary conditions for track or pavement laying and train or train running operation, bearing static load and dynamic load of track and locomotive vehicle or pavement and traffic load, and simultaneously extending, transmitting and diffusing the load to the foundation. On the longitudinal section, the roadbed must ensure the required elevation of the line; on the plane, the roadbed, the bridge and the tunnel are connected to form a complete through line. In civil engineering, the subgrade occupies an important position in the aspects of construction quantity, floor area and investment, and the anti-settlement performance of the subgrade is an important standard for quality assessment. In view of the above, the inventors of the present invention have conducted extensive studies to obtain a highway subgrade anti-settlement structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a highway subgrade prevents subsiding structure, it sets up reasonable settlement-preventing structure, reaches the good effect of subsiding of preventing.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a highway subgrade prevents subsiding structure, includes rammed earth layer, basic unit, intermediate level and the surface course by supreme setting gradually down, the intermediate level adopts cement to stabilize the gravel and paves and form, evenly be equipped with a plurality of first prefabs in the intermediate level, first prefab includes concrete body and many fastening reinforcing bars, many fastening reinforcing bars are radially to insert and locate on the concrete body.

In a further improvement, the side wall of the fastening steel bar is provided with a plurality of barbs.

In a further improvement, the side wall of the fastening steel bar is provided with a plurality of annular grooves surrounding the fastening steel bar.

In a further improvement, the concrete body is hemispherical, and the hemispherical plane is attached to the upper surface of the base layer.

In a further improvement, the thickness of the intermediate layer is 40-60cm, and the height of the first preform is 20-30 cm.

Further improvement, the basic unit adopts natural gravel to pave and forms, the surface course includes pitch surface course lower floor and lays in pitch surface course upper strata on the pitch surface course lower floor, pitch surface course lower floor adopts medium grain formula asphalt concrete to lay and forms, pitch surface course upper strata adopts fine grain formula SBS modified asphalt concrete to lay and forms.

The further improvement still includes the second prefab, the second prefab is the bar, and is a plurality of the second prefab along the even parallel arrangement of width direction of road bed in on the rammed earth layer.

In a further improvement, the second prefabricated member is made of concrete, and the longitudinal section of the second prefabricated member is semicircular.

Compared with the prior art, the utility model provides a highway subgrade anti-settlement structure, it utilizes first prefab to form the support to the intermediate level, promotes the support ability of intermediate level, first prefab includes concrete body and inserts the many reinforcing bars that locate on the concrete body, forms and grabs and holds the structure, makes the structural strength of intermediate level obtain the reinforcing; simultaneously, make the surface of ramming soil layer form the drainage space through setting up the second prefab, be favorable to the quick discharge of water, prevent effectively that the road bed from softening to promote the settlement performance of preventing of road bed.

Drawings

Fig. 1 is the utility model relates to a highway subgrade anti-settlement structure's schematic structure.

Fig. 2 is the utility model relates to a highway subgrade anti-settlement structure's first prefab's structural schematic.

Fig. 3 is the utility model relates to a side direction visual angle structure sketch map of rammed earth layer and second prefab of highway subgrade anti-settlement structure.

In the drawings

Ramming the soil layer-1; a base layer-2; an intermediate layer-3;

asphalt surface course lower layer-4; upper layer of asphalt surface layer-5; concrete body-61;

fastening steel bars-62; an annular groove-621; a second preform-7.

Detailed Description

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

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 1 to 3, a highway subgrade anti-settlement structure, include rammed earth layer 1, basic unit 2, intermediate level 3 and the surface course that sets gradually by supreme down, intermediate level 3 adopts cement stabilization gravel to pave and forms, evenly be equipped with a plurality of first prefabs in the intermediate level 3, first prefab includes concrete body 61 and many fastening reinforcing bars 62, many fastening reinforcing bars 62 are radially to insert and locate on the concrete body 61. First prefab provides the holding power on the one hand, and it is located intermediate level 3, can effectively promote intermediate level 3's bearing capacity, simultaneously, many fastening reinforcement 62 is radial distribution, can form powerful the effect of grabbing to intermediate level 3 for intermediate level 3's structure is inseparabler, is difficult to the dispersion, thereby makes intermediate level 3's holding power obtain greatly improving, has promoted the ability of preventing subsiding of road bed on the whole.

In order to further improve the holding capacity of the reinforcing steel bars to the middle layer 3, a plurality of hook thorns are arranged on the side wall of the fastening reinforcing steel bars 62, the hook thorns hook the middle layer 3 to avoid relative displacement between the reinforcing steel bars and the materials of the middle layer 3, and the hook thorns are not shown in the figure; or the side wall of the fastening steel bar 62 is provided with a plurality of annular grooves 621 surrounding the fastening steel bar, after the annular grooves 621 are arranged, the material of the middle layer 3 is sunk into the annular grooves 621, so that the middle layer 3 and the steel bar are combined more tightly, and the first prefabricated member can play a good gripping effect.

Further, concrete body 61 is the hemisphere, and the hemisphere just has sphere and plane, and the upper surface laminating of hemispherical plane and basic unit 2, when actual construction, after having laid basic unit 2, directly with first prefab place on basic unit 2 can, construction operation is very convenient, efficient.

Further, the thickness of the intermediate layer 3 is 40-60cm, preferably 50cm, and the height of the first preform is 20-30cm, preferably 30 cm.

Specifically, base layer 2 adopts natural gravel to pave and forms, the surface course includes pitch surface course lower floor 4 and lays in pitch surface course upper strata 5 on pitch surface course lower floor 4, pitch surface course lower floor 4 adopts medium grain formula asphalt concrete to lay and forms, pitch surface course upper strata 5 adopts fine grain formula SBS modified asphalt concrete to lay and forms.

Further, the highway subgrade settlement-preventing structure of this embodiment still includes second prefab 7, second prefab 7 is the bar, and is a plurality of second prefab 7 along the even parallel arrangement of width direction of road bed in on ramming soil layer 1, be located promptly in basic unit 2. Under this structural setting, form drainage space between two adjacent second prefabs 7, can be rapidly with the directional derivation of the water in basic unit 2, avoided a large amount of ponding to exist in basic unit 2, lead to basic unit 2 to soften, reduce the anti-settling property of road bed.

Specifically, the second prefabricated member 7 is made of concrete, and the longitudinal section of the second prefabricated member is semicircular.

The foregoing description of the embodiments is provided to enable one of ordinary skill in the art to make and use the invention and is provided for enabling those of ordinary skill in the art to make and use the invention as provided within the appended claims. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a highway subgrade prevents subsiding structure, its characterized in that includes rammer layer, basic unit, intermediate level and the surface course by supreme setting gradually down, the intermediate level adopts cement stabilization gravel to pave and forms, evenly be equipped with a plurality of first prefabs in the intermediate level, first prefab includes concrete body and many fastening reinforcing bars, many fastening reinforcing bars are radially to insert and locate on the concrete body.

2. The highway subgrade anti-settlement structure according to claim 1, wherein a plurality of barbs are arranged on the side wall of the fastening steel bar.

3. A roadbed anti-sedimentation structure for a road according to claim 1, wherein the side walls of the fastening reinforcing bars are provided with a plurality of annular grooves around themselves.

4. The anti-settling structure of a road subgrade according to claim 1, wherein the concrete body is hemispherical, and the hemispherical plane is attached to the upper surface of the base layer.

5. The roadbed anti-sedimentation structure of claim 4, wherein the thickness of the intermediate layer is 40-60cm, and the height of the first prefabricated member is 20-30 cm.

6. The highway subgrade anti-settling structure according to claim 1, wherein the base layer is made of natural gravel, the surface layer comprises an asphalt surface layer lower layer and an asphalt surface layer upper layer laid on the asphalt surface layer lower layer, the asphalt surface layer lower layer is made of medium-grain asphalt concrete, and the asphalt surface layer upper layer is made of fine-grain SBS modified asphalt concrete.

7. The highway subgrade anti-settlement structure according to any one of claims 1 to 6, further comprising second prefabricated members, wherein the second prefabricated members are strip-shaped, and a plurality of the second prefabricated members are uniformly arranged on the ramming layer in parallel along the width direction of the subgrade.

8. The roadbed settlement-preventing structure of claim 7, wherein the second prefabricated member is made of concrete and has a semicircular longitudinal section.