CN218175466U

CN218175466U - Road structure suitable for being built on soft foundation

Info

Publication number: CN218175466U
Application number: CN202221467939.5U
Authority: CN
Inventors: 李万喜; 崔同阵; 张云胜; 张�杰
Original assignee: Shandong Lutai Highway Engineering Co ltd
Current assignee: Shandong Lutai Highway Engineering Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-12-30
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a be suitable for road structure of building on soft base belongs to road structure technical field. A road structure suitable for construction on soft foundations, comprising asphalt concrete, further comprising: the road base layer is positioned below the asphalt concrete, and a lime layer is filled on the road base layer through punching; the gravel layer is positioned below the road base layer, and the bottom end of the lime layer extends to the gravel layer; the utility model discloses a punch on the roadbed layer, and fill the lime layer in the hole, make the lime layer absorb the water back in the roadbed layer, the physical mechanics nature of the peripheral soil in lime layer is improved in inflation, exothermic and ion exchange effect, and form the compound ground of lime pile, and then improve the ground bearing capacity, reduce and subside and improve stability, through utilizing nonwoven geotechnological cloth with higher speed lime layer inflation, it is exothermic, reduce engineering progress required time, this road structure can improve the effect of preventing subsiding, avoid the road surface inhomogeneous settlement to appear.

Description

Road structure suitable for being built on soft foundation

Technical Field

The utility model relates to a road structure technical field especially relates to a be suitable for road structure of building on soft base.

Background

The soft foundation road section has large soil foundation water content, strong compressibility and long consolidation settlement period, and the roadbed settlement difference easily causes serious pavement cracking or slab staggering and other diseases;

in the municipal road engineering construction, in order to avoid the harm that soft foundation problem caused engineering quality and safety, often need carry out soft foundation before the road bed construction and handle, and current soft foundation treatment effect is poor, and the possibility that later stage takes place to subside is big, can lead to inhomogeneous settlement and the fracture to appear in the road surface, causes the road safety accident.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving soft base treatment effect poor, the possibility that later stage takes place to subside is big, can lead to the road surface inhomogeneous settlement and the fracture to appear, causes the problem of road safety accident.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a road structure suitable for construction on soft foundations, comprising asphalt concrete, and further comprising: the road base layer is positioned below the asphalt concrete, and a lime layer is filled on the road base layer through punching; the gravel layer is positioned below the road base layer, and the bottom end of the lime layer extends to the gravel layer; the water collecting pipe and the road drainage pipeline are arranged on two sides of the gravel layer respectively, and the water collecting pipe is used for collecting water in the gravel layer and draining the water through the road drainage pipeline.

In order to facilitate water to enter the water collecting pipe, preferably, one side of the water collecting pipe close to the gravel layer is provided with a water inlet hole, and the water collecting pipe is communicated with the road drainage pipeline through a connecting pipe.

In order to avoid collector pipe, road drainage pipe atress fracture, it is further, still include the pitch layer, the pitch layer is located the metalling both sides, collector pipe, road drainage pipe all set up on the pitch layer.

In order to improve the anti-settling effect, the lime layer is further provided with a plurality of rows.

In order to increase the speed of forming the lime pile by the lime layer, the lime layer is further wrapped by a non-woven geotextile.

In order to improve the hydrophobic effect, a pebble layer is further filled between the roadbed layer and the non-woven geotextile.

Compared with the prior art, the utility model provides a be suitable for road structure of building on soft base possesses following beneficial effect:

the part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses a punch on the roadbed layer, and fill the lime layer in the hole, make behind the water in the lime layer absorption roadbed layer, the inflation, exothermic and the physical mechanics nature of the peripheral soil of ion exchange effect improvement lime layer, and form the compound ground of lime pile, and then improve the ground bearing capacity, reduce and subside and improve stability, through utilizing nonwoven geotechnological cloth with higher speed lime layer inflation, it is exothermic, reduce engineering progress required time, this road structure can improve the effect of preventing subsiding, avoid the inhomogeneous settlement to appear in the road surface.

Drawings

Fig. 1 is a schematic perspective view of a road structure suitable for being built on a soft foundation according to the present invention;

fig. 2 is a schematic structural diagram of a road structure suitable for being built on a soft foundation according to the present invention;

fig. 3 is a schematic structural diagram of a in a road structure diagram 2 suitable for being built on a soft foundation according to the present invention.

In the figure: 1. a roadbed layer; 2. a lime layer; 3. a pebble layer; 4. asphalt concrete; 5. a water collection pipe; 51. a water inlet hole; 6. road drainage pipelines; 61. a connecting pipe; 7. a crushed stone layer; 8. non-woven geotextile; 9. and (4) an asphalt layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-3, a road structure suitable for construction on soft foundations comprises asphalt concrete 4, and further comprises: the road base layer 1 is positioned below the asphalt concrete 4, and the lime layer 2 is filled on the road base layer 1 through punching; the gravel layer 7 is positioned below the roadbed layer 1, and the bottom end of the lime layer 2 extends to the gravel layer 7; the water collecting pipe 5 and the road drainage pipe are respectively arranged at two sides of the gravel layer 7; the lime layer 2 is provided with a plurality of rows; a pebble layer 3 is filled between the road base layer 1 and the non-woven geotextile 8;

the crushed stone layer 7 is paved on the road surface in advance, and the crushed stone layer 7 is rolled and tamped layer by using machinery, and tamped to the required compactness, so that the rolled and tamped crushed stone layer 7 can effectively diffuse the base pressure, improve the bearing capacity of the foundation, reduce the sedimentation and accelerate the drainage consolidation of the soil layer;

laying the water collecting pipes 5 on two sides of the gravel layer 7, attaching the water collecting pipes 5 to the edges of the gravel layer 7 and communicating the water collecting pipes 5 with the road drainage pipeline 6;

the method comprises the steps that holes are dug on a road base layer 1 manually or mechanically, after the holes are dug at equal intervals, lime is filled in the holes, pebble layers 3 are filled on two sides of a lime layer 2, when the lime layer 2 adsorbs water in the road base layer 1, the water is quickly discharged to a gravel layer 7 through the pebble layers 3, and after the lime layer 2 adsorbs the water in the road base layer 1, the physical and mechanical properties of soil around the lime layer 2 are improved through expansion, heat release and ion exchange effects, a lime pile composite foundation is formed, so that the bearing capacity of the foundation is improved, the settlement is reduced, and the stability is improved;

asphalt concrete 4 adopts fine grain formula asphalt concrete, and the hole is little, can prevent that the rainwater from permeating downwards for road bed 1 stable in structure further improves life, and 4 crushing resistances of asphalt concrete are strong simultaneously.

Lime piles are formed by arranging multiple rows of lime layers 2, so that the bearing capacity of the foundation is improved, and the effect is remarkable.

Example 2:

referring to fig. 2, a road structure suitable for construction on soft foundations, comprising asphalt concrete 4, further comprising: the road base layer 1 is positioned below the asphalt concrete 4, and the lime layer 2 is filled on the road base layer 1 through punching; the gravel layer 7 is positioned below the roadbed layer 1, and the bottom end of the lime layer 2 extends to the gravel layer 7; the water collecting pipe 5 and the road drainage pipe are respectively arranged at two sides of the gravel layer 7; the lime layer 2 is provided with a plurality of rows, further: one side of the water collecting pipe 5 close to the rubble layer 7 is provided with a water inlet hole 51, and the water collecting pipe 5 is communicated with the road drainage pipeline 6 through a connecting pipe 61;

adsorb the water in the roadbed layer 1 through lime layer 2, water enters into rubble layer 7 downwards, because there is the clearance in rubble layer 7, water is to the both sides row, enters into collector pipe 5 to enter into road drainage pipe 6 through connecting pipe 61 and discharge away.

Example 3:

referring to fig. 2, a road structure suitable for construction on soft foundations, comprising asphalt concrete 4, further comprising: the road base layer 1 is positioned below the asphalt concrete 4, and the lime layer 2 is filled on the road base layer 1 through punching; the gravel layer 7 is positioned below the roadbed layer 1, and the bottom end of the lime layer 2 extends to the gravel layer 7; the water collecting pipe 5 and the road drainage pipe are respectively arranged at two sides of the gravel layer 7; the lime layer 2 is provided with a plurality of rows, further: the asphalt layer 9 is positioned at two sides of the gravel layer 7, and the water collecting pipe 5 and the road drainage pipeline 6 are both arranged on the asphalt layer 9;

the asphalt layer 9 can provide certain bearing capacity for the water collecting pipe 5 and the road drainage pipeline 6, and the water collecting pipe 5 and the road drainage pipeline 6 are prevented from being broken due to stress when a vehicle passes through.

Example 4:

referring to fig. 3, a road structure suitable for construction on soft foundations, substantially the same as in embodiment 1, further: the lime layer 2 is wrapped with a non-woven geotextile 8;

can be fast with the water absorption in the roadbed layer 1 for the quick water intake expansion of lime layer 2, generate heat improve the construction speed, reduce the required time of lime layer 2 inflation.

The utility model discloses a punch on road bed layer 1, and fill lime layer 2 in the hole, make behind the water in lime layer 2 absorption road bed layer 1, the inflation, the physical mechanics nature of 2 peripheral soils on exothermic and ion exchange effect improvement lime layer, and form the compound ground of lime pile, and then improve the ground bearing capacity, reduce to subside and improve stability, through utilizing non-woven geotechnological cloth 8 with higher speed lime layer 2 inflation, it is exothermic, reduce the engineering progress required time, this road structure can improve the effect of preventing subsiding, avoid the inhomogeneous settlement to appear in the road surface.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. A road structure suitable for construction on soft foundations, comprising bituminous concrete (4), characterized in that it further comprises:

the road base layer (1) is positioned below the asphalt concrete (4), and a lime layer (2) is filled on the road base layer (1) through punching;

the gravel layer (7) is positioned below the road base layer (1), and the bottom end of the lime layer (2) extends to the gravel layer (7);

the water collecting pipe (5) and the road drainage pipe (6) are arranged on two sides of the gravel layer (7) respectively, and the water collecting pipe (5) is used for collecting water in the gravel layer (7) and is drained away through the road drainage pipe (6).

2. The road structure suitable for being built on a soft foundation as claimed in claim 1, wherein the water collecting pipe (5) is provided with a water inlet hole (51) at one side close to the gravel layer (7), and the water collecting pipe (5) is communicated with the road drainage pipeline (6) through a connecting pipe (61).

3. A road structure suitable for being built on soft foundations, as claimed in claim 2, further comprising an asphalt layer (9), wherein the asphalt layer (9) is located on both sides of the gravel layer (7), and the water collecting pipe (5) and the road drainage pipe (6) are arranged on the asphalt layer (9).

4. A road structure suitable for construction on soft foundations, according to claim 3, characterized in that the lime layer (2) is provided with a plurality of rows.

5. A road structure suitable for construction on soft foundations according to claim 4, characterized in that the lime layer (2) is wrapped with a non-woven geotextile (8).

6. A road structure suitable for construction on soft foundations, as claimed in claim 4, characterized in that the pebble layer (3) is filled between the road base layer (1) and the non-woven geotextile (8).