CN203729176U

CN203729176U - Highway subgrade settlement prevention facility

Info

Publication number: CN203729176U
Application number: CN201420123834.7U
Authority: CN
Inventors: 赵伟崇
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-12
Filing date: 2014-03-12
Publication date: 2014-07-23
Anticipated expiration: 2024-03-12

Abstract

The utility model discloses a highway subgrade settlement prevention facility. The highway subgrade settlement prevention facility comprises a pavement layer and subgrade piles, wherein a subgrade layer is arranged between the pavement layer and the subgrade piles, a sand treatment layer is arranged between the pavement layer and the subgrade layer, and at least two layers of geogrid layers are arranged in the subgrade layer. According to the highway subgrade settlement prevention facility, the combination of the sand treatment layer and the geogrid layers is adopted, the sand treatment layer can be used for effectively preventing pavement ponding from permeating into the subgrade layer, the geogrid layers can be used for improving the bearing capacity of the subgrade quickly and controlling the development of the settlement amount, and the load can be distributed to wider subbase layers effectively by the lateral confinement effect on the subgrade layer, so that the phenomenon of subgrade settlement can be prevented effectively, the driving safety is improved, and the service life of roads can be prolonged.

Description

Anti-settling device of highway subgrade

Technical field

The utility model relates to a kind of Anti-settling device of highway subgrade.

Background technology

Subgrade settlement is the common a kind of phenomenon that endangers traffic safety of highway use procedure, owing to bearing for a long time higher load effect, causes the whole sinking of roadbed, and formation is uneven, and when vehicle travels on this up-and-down road surface, being that driving is big really avoids.And existing anti-settling facility is only to lay one deck processing layer between the basic unit of roadbed and roadbed stake, too simple structural measure is difficult to thoroughly solve the problem of roadbed subsidence, especially the road of building in the poor location of geological conditions, carries out anti-settling measure particularly important.

Summary of the invention

The technical problems to be solved in the utility model is: the problem for the prior art solving in above-mentioned background technology exists, provides a kind of improved Anti-settling device of highway subgrade, to prevent better roadbed subsidence.

The utility model solves the technical scheme that its technical problem adopts: a kind of Anti-settling device of highway subgrade, comprise supercrust, roadbed stake, between supercrust and roadbed stake, it is base course, between described supercrust and base course, be provided with grains of sand processing layer, in base course, be provided with at least two-layer geogrids layer.

Preferably, in described base course, be provided with from bottom to up three layers of geogrids layer.

Further, described geogrids layer geo-grid used is unidirectional geo-grid.

The beneficial effects of the utility model are, the utility model adopts grains of sand processing layer to combine with geogrids layer, grains of sand processing layer can effectively prevent that surface gathered water from penetrating into base course, geogrids layer can improve rapidly bearing capacity of foundation soil, control the development of settling amount, to the side of base course, limit interaction energy effectively load to be distributed on wider subbase, thereby can effectively prevent the generation of subgrade settlement phenomenon, improve travel safety, extend Road Service Life.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model.

In figure: 1. supercrust 2. roadbed stake 3. base course 4. grains of sand processing layer 5. geogrids layer

The specific embodiment

By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.

A kind of Anti-settling device of highway subgrade as shown in Figure 1, comprise supercrust 1, roadbed stake 2, between supercrust 1 and roadbed stake 2, it is base course 3, between described supercrust 1 and base course 3, be provided with grains of sand processing layer 4, grains of sand processing layer can fully absorb surface gathered water, prevents that ponding from penetrating into base course and causing subgrade settlement.

In described base course 3, be provided with from bottom to up three layers of geogrids layer 5, described geogrids layer 5 geo-grid used is unidirectional geo-grid.Because geo-grid can improve rapidly bearing capacity of foundation soil, control the development of settling amount, side limit interaction energy to base course 3 is distributed to load on wider subbase effectively, thereby reduces base course 3 thickness, reduces construction costs, reduction of erection time, increase the service life, so geo-grid can strengthening soft foundation, and geo-grid is during for reinforcement pitch or cement pavement, can reduce the rut degree of depth, extend road surface anti-fatigue life.

While carrying out geogrids layer 5 construction, should first smooth original ground on base course 3, then lay geo-grid, during laying, geo-grid stretch-draw is opened, elongation control during stretch-draw is between 0.5%～1%, the preferential coated that adopts during geogrids layer 5 construction, guarantee that geo-grid is stressed evenly, by hold-down bars or plastic ties, adjacent geo-grid is fixed, laid after first floor geogrids layer, fill out new one deck earthwork smooth thereon, on a section of the geo-grid parcel trough of having laid, turn over, then second layer geo-grid is paved, at the edge of earthen fill zone with plastic ties by second layer geo-grid together with the colligation of first floor geo-grid, other end pretensioning, when not loosening together with the geo-grid colligation of turning on first floor, each reserved 150 centimetres of left and right, two ends, finally cut off unnecessary geo-grid, complete the laying of second layer geogrids layer 5, in second layer geogrids layer 5, banket, according to aforementioned manner, lay the 3rd layer of geogrids layer 5.

The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on manual, must determine its technical scope according to claim scope.

Claims

1. an Anti-settling device of highway subgrade, comprise supercrust (1), roadbed stake (2), between supercrust (1) and roadbed stake (2), be base course (3), it is characterized in that: between described supercrust (1) and base course (3), be provided with grains of sand processing layer (4), in base course (3), be provided with at least two-layer geogrids layer (5).

2. Anti-settling device of highway subgrade according to claim 1, is characterized in that: in described base course (3), be provided with from bottom to up three layers of geogrids layer (5).

3. Anti-settling device of highway subgrade according to claim 1 and 2, is characterized in that: described geogrids layer (5) geo-grid used is unidirectional geo-grid.