CN210766223U

CN210766223U - Roadbed structure capable of preventing settlement during drainage

Info

Publication number: CN210766223U
Application number: CN201920768108.3U
Authority: CN
Inventors: 李洪波; 邱进锋; 曹星; 黄宇星; 黄猛
Original assignee: Zhongye Huacheng Wuhan Engineering Co ltd
Current assignee: Zhongye Huacheng Wuhan Engineering Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-06-16
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a roadbed structure that subsides is prevented in drainage relates to municipal construction's technical field, includes embankment layer, concrete layer, bed course and soft soil layer from top to bottom in proper order, the bed course with be equipped with the permeable bed between the soft soil layer, a plurality of extensions that have buried underground in the soft soil layer vertical drain bar in the permeable bed, the permeable bed all is equipped with the escape canal along the ascending both sides of road width direction. The utility model discloses thereby have better drainage and have not only can prevent subsiding but also can reduce the technological effect of road bed corrosion, fracture.

Description

Roadbed structure capable of preventing settlement during drainage

Technical Field

The utility model belongs to the technical field of the technique of municipal construction and specifically relates to a roadbed structure that subsides is prevented in drainage.

Background

Road construction is an important factor for national economy development, the number of roads is continuously increased along with the continuous development of national social economy, but the roads are often settled to cause the problems of deformation, cracking and the like, so that the passing of vehicles is influenced slightly, the vehicles are damaged seriously, and important traffic safety accidents such as traffic accidents are caused. The current highway subgrade does not have better settlement-preventing structure for uneven phenomenon often appears subsiding in the highway, leads to the life reduction of pavement layer, has brought a lot of troubles for the use.

To above-mentioned problem, chinese patent that patent publication number is CN206646347U provides a waterproof highway subgrade of preventing subsiding, including plain soil layer, the first layer and the pavement layer of preventing subsiding, the second of preventing subsiding, the top on plain soil layer is provided with the buffer layer, and the top of buffer layer is provided with the first layer of preventing subsiding, the first top of preventing subsiding is provided with first rammer soil layer, and the top on first rammer soil layer is provided with the back up coat, the top on back up coat is provided with the second rammer soil layer, and the top on second rammer soil layer is provided with the second and prevents subsiding the layer, the second is prevented subsiding and is installed between layer and the first layer of preventing subsiding and prevent subsiding and subsideing.

The above prior art solutions have the following drawbacks: this waterproof highway subgrade of preventing subsiding prevents subsiding the effect through first prevent subsiding layer, second prevent subsiding the layer, prevent the sedimentation column and prevent subsiding the cooperation between the board and realize preventing subsiding. However, many highways are laid on soft soil foundations with much underground water, if only waterproof treatment is carried out on the highway subgrade, the underground water in the soft soil foundations will seep out from the two sides of the subgrade after being pressed by the subgrade, and the seepage water on the two sides of the subgrade erodes the subgrade for a long time, which easily causes the problems of corrosion, cracking and the like of reinforced concrete in the subgrade.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thereby have better drainage nature both can prevent subsiding and reduce the road bed corrosion, the drainage of fracture prevents the roadbed structure who subsides.

The utility model discloses a can realize through following technical scheme:

the utility model provides a roadbed structure that subsides is prevented in drainage includes embankment layer, concrete layer, bed course and soft soil layer from top to bottom in proper order, the bed course with be equipped with the permeable bed between the soft soil layer, a plurality of extensions that have buried underground in the soft soil layer vertically to vertical drain bar in the permeable bed, the permeable bed all is equipped with the escape canal along the ascending both sides of road width direction.

Through adopting above-mentioned technical scheme, concrete layer provides good structural strength and compressive strength bed course and the soft soil layer between sets up the permeable bed for the road, pore water in the soft soil layer is at the roadbed layer, concrete layer and the gravity oppression of bed course down, get into the permeable bed through vertical drain bar, because the permeable bed has more space that supplies pore water to permeate, pore water can permeate to the both sides escape canal on the road width direction by the permeable bed, realize the high-efficient drainage of road bed groundwater, and then accelerate the ground consolidation, reduce the road subside or subside the possibility of the road bed fracture that arouses when inhomogeneous.

Further setting the following steps: and an clay layer is arranged between the permeable layer and the cushion layer.

By adopting the technical scheme, the clay layer is arranged between the permeable layer and the cushion layer, the clay layer has good anti-seepage performance, pore water in the permeable layer can be prevented from permeating into the cushion layer, and the requirement of clay seepage prevention on the foundation is lower than that of other seepage prevention materials; in addition, when the foundation is slightly deformed, the clay can be automatically healed under the action of the dead weight of the clay, so that the deformation resistance and the self-repairing capability of the foundation are improved.

Further setting the following steps: and a plurality of latticed reinforcing steel bar meshes are laid in the clay layer.

Through adopting above-mentioned technical scheme, the clay layer is owing to have plasticity, has the lower problem of intensity when the water content is great in earlier stage, is unfavorable for keeping the better structural strength of ground, consequently, lays latticed reinforcing bar net in the clay layer, is favorable to keeping the stronger structural strength in clay layer earlier stage, and the ground is more firm.

Further setting the following steps: and a plurality of supporting piles are arranged at the bottom of the concrete layer, and the bottoms of the supporting piles extend into the clay layer and are fixed with the nodes of the reinforcing mesh.

Through adopting above-mentioned technical scheme, the concrete bottom sets up the fender pile fixed with the node of reinforcing bar net, and the fender pile can be connected into whole with concrete layer and reinforcing bar net to make clay layer, reverse osmosis layer, bed course and concrete layer form the higher whole of structural strength, be favorable to improving the structural strength and the compressive capacity of ground, and then reduce the road and subside.

Further setting the following steps: be equipped with a plurality of horizontal drain pipes in the permeable bed, the one end of horizontal drain pipe extends to permeable bed edge along the road width direction.

Through adopting above-mentioned technical scheme, set up a plurality of horizontal drain pipes in the permeable bed, a plurality of horizontal drain pipes can carry out the water conservancy diversion with the permeable bed mesopore water that is close to the road central line region, make the inside water of permeable bed discharge sooner, improve ground consolidation speed, improve and prevent the settlement performance.

Further setting the following steps: and a reverse osmosis layer is arranged between the cushion layer and the clay layer.

Through adopting above-mentioned technical scheme, set up the reverse osmosis layer between bed course and the clay layer, then the pore water in the bed course can the infiltration reverse osmosis layer in, makes the bed course solidify fast, further improves anti-settling property.

Further setting the following steps: a plurality of vertical foundation piles are arranged in the soft soil layer, the tops of the foundation piles extend into the water permeable layer and are fixed with foundation base discs, and the size of each foundation base disc is larger than the size of the cross section of each foundation pile.

Through adopting above-mentioned technical scheme, during a plurality of ground piles were squeezed into soft soil layer, on the one hand strutted soft soil layer, made soft soil layer be difficult for loose, on the other hand, during ground pile passed through ground basement dish and stabilized embedding permeable bed, ground pile was difficult for sinking in soft soil layer to improve ground pile and to soft soil layer stability of strutting.

Further setting the following steps: buffer reinforcing meshes are arranged between the plurality of foundation base discs and the top surface of the soft soil layer.

Through adopting above-mentioned technical scheme, the buffering reinforcing bar net between ground basement dish and the soft soil layer top surface can carry out the bearing to ground basement dish, makes a plurality of ground basement dish link into an organic whole structure simultaneously, and whole compressive strength is higher, prevents subsiding the effect better.

To sum up, the utility model discloses a beneficial technological effect does:

(1) a permeable layer is arranged below the cushion layer, pore water in the soft soil layer permeates into the permeable layer through a plurality of vertical drainage plates under the compression of the embankment layer, the concrete layer and the cushion layer and then permeates into drainage ditches at two sides of the road from the permeable layer, so that the underground water of the roadbed is efficiently drained, the consolidation of the foundation is accelerated, and the possibility of cracking of the road caused by the non-uniform settlement or settlement of the road is reduced;

(2) a clay layer is arranged between the permeable layer and the cushion layer, a reinforcing steel bar net is laid in the clay layer, pore water in the permeable layer can be prevented from permeating into the cushion layer through the good anti-permeation performance of the clay, the problem of low structural strength of the clay layer in the early stage is solved through the reinforcing steel bar net, and the good structural strength of the foundation in the early stage of laying is kept;

(3) a plurality of foundation piles are driven into the soft soil layer, and the foundation base plate at the top of each foundation pile is embedded into the permeable layer, so that the foundation piles can stably support the soft soil layer, and the compressive strength of the soft soil layer is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1. an embankment layer; 2. a concrete layer; 3. a cushion layer; 4. a soft soil layer; 5. a water permeable layer; 6. a vertical drainage plate; 7. a drainage ditch; 8. a clay layer; 9. reinforcing the reinforcing mesh; 10. supporting piles; 11. a transverse drain pipe; 12. a reverse osmosis layer; 13. a foundation pile; 14. a ground-based floor pan; 15. buffering the reinforcing mesh; 16. and (5) an original soil layer.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a roadbed structure that subsides is prevented in drainage includes embankment layer 1, concrete layer 2, bed course 3, reverse osmosis layer 12, clay layer 8, permeable bed 5 and soft soil layer 4 from top to bottom in proper order. A plurality of vertical drain bars 6 are vertically buried in the soft soil layer 4, and the top ends of the vertical drain bars 6 extend to the bottom surface of the permeable layer 5. The drainage ditch 7 has all been laid along the ascending both sides of road width direction in reverse osmosis layer 12, clay layer 8 and permeable bed 5, and the bottom surface that the drainage ditch 7 extended and ditched 7 along road length direction flushes with the top surface of soft soil layer 4. Under the gravity oppression of roadbed layer, concrete layer 2 and bed course 3, the pore water in soft soil layer 4 gets into permeable stratum 5 through vertical drain bar 6 in, permeates to the ascending both sides escape canal 7 of road width direction by permeable stratum 5 again, realizes the high-efficient drainage of road bed groundwater for the ground concreties, reduces and subsides.

The clay layer 8 is paved with a latticed reinforcing mesh 9, and the reinforcing mesh 9 can be a latticed reinforcing mesh sheet commonly used in building construction, so as to reinforce the early-stage compressive structural strength of the clay layer 8. A plurality of supporting piles 10 are integrally cast at the bottom of the concrete layer 2, and the bottoms of the supporting piles 10 extend into the clay layer 8 and wrap the nodes of the reinforcing mesh reinforcement 9 so as to be fixedly connected with the reinforcing mesh reinforcement 9. The fender pile 10 is connected concrete layer 2 and reinforcing mesh 9, makes clay layer 8, reverse osmosis layer 12, bed course 3 and concrete layer 2 form the higher whole of structural strength, is favorable to improving the structural strength and the compressive capacity of ground, and then reduces the road and subsides.

Referring to fig. 1, a plurality of transverse drainage pipes 11 are laid in the permeable layer 5, and the plurality of transverse drainage pipes 11 extend along the width direction of the road and are uniformly distributed along the length direction of the road. One end of the transverse drain pipe 11 is close to the central line of the road, and the other end of the transverse drain pipe 11 extends into the drainage ditch 7 at the edge of the road, and the transverse drain pipe 11 is preferably made of a PVC corrosion-resistant plastic pipe. The reverse osmosis layer 12 is a permeable structure filled with sand, and comprises three sand layers with progressively reduced sand sizes from top to bottom in sequence from the reverse osmosis layer 12.

In order to strengthen the compressive strength of the soft soil layer 4, a plurality of vertical foundation piles 13 are driven into the soft soil layer 4, the tops of the foundation piles 13 extend into the water permeable layer 5, a disc-shaped ground base disc 14 is integrally cast at the tops of the foundation piles 13, and the diameter size of the ground base disc 14 is larger than the cross section size of the foundation piles 13. A buffer reinforcing mesh 15 is paved between the ground base disc 14 and the top surface of the soft soil layer 4. The bottom of the foundation pile 13 is driven into the harder original soil layer 16 below the soft soil layer 4. The buffer reinforcing mesh 15 connects the plurality of foundation slabs 14 into an integral structure, so that the overall compressive strength of the plurality of support piles 10 is improved, and the anti-settling effect is better.

The implementation principle and the beneficial effects of the embodiment are as follows: the road bed includes embankment layer 1 in proper order, concrete layer 2, bed course 3, reverse osmosis layer 12, clay layer 8, permeable bed 5 and soft soil layer 4, the pore water in soft soil layer 4 permeates to permeable bed 5 through a plurality of vertical drain bars 6 under embankment layer 1, concrete layer 2 and bed course 3's the oppression, permeate to the escape canal 7 of road both sides in following permeable bed 5 again, make the high-efficient drainage of road bed groundwater, accelerate the ground consolidation, reduce the road subside or subside the possibility that arouses the road fracture when inhomogeneous.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a roadbed structure that subsides is prevented in drainage includes embankment layer (1), concrete layer (2), bed course (3) and soft soil layer (4) from top to bottom in proper order, its characterized in that: the bedding course (3) with be equipped with permeable bed (5) between soft soil layer (4), vertically in soft soil layer (4) bury underground a plurality of extensions to vertical drain bar (6) in permeable bed (5), permeable bed (5) all are equipped with escape canal (7) along the ascending both sides of road width direction.

2. The drainage settlement-prevention roadbed structure according to claim 1, wherein: and a clay layer (8) is arranged between the permeable layer (5) and the cushion layer (3).

3. The drainage settlement-prevention roadbed structure according to claim 2, wherein: and a plurality of latticed reinforcing steel bar meshes (9) are laid in the clay layer (8).

4. The drainage sedimentation prevention roadbed structure according to claim 3, wherein: the concrete layer (2) bottom is equipped with a plurality of fender piles (10), the bottom of fender pile (10) extends to in clay layer (8) and with the node of reinforcing bar net (9) is fixed.

5. The drainage settlement-prevention roadbed structure according to claim 1, wherein: be equipped with a plurality of horizontal drain pipe (11) in permeable bed (5), the one end of horizontal drain pipe (11) extends to permeable bed (5) is along the ascending edge of road width direction.

6. The drainage settlement-prevention roadbed structure according to claim 2, wherein: and a reverse osmosis layer (12) is arranged between the cushion layer (3) and the clay layer (8).

7. The drainage settlement-prevention roadbed structure according to claim 1, wherein: a plurality of vertical foundation piles (13) are arranged in the soft soil layer (4), the tops of the foundation piles (13) extend into the water permeable layer (5) and are fixed with foundation discs (14), and the size of each foundation disc (14) is larger than the cross section size of each foundation pile (13).

8. The drainage sedimentation prevention roadbed structure according to claim 7, wherein: buffer reinforcing meshes (15) are arranged between the plurality of foundation base discs (14) and the top surface of the soft soil layer (4).