CN210066390U

CN210066390U - Punishment structure suitable for deep weak soil roadbed

Info

Publication number: CN210066390U
Application number: CN201920532740.8U
Authority: CN
Inventors: 童祖玲; 赖苏玲; 孙道军; 刘一辉; 李娜
Original assignee: Nanjing Tongli Construction Group Co Ltd
Current assignee: Nanjing Tongli Construction Group Co Ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-02-14
Anticipated expiration: 2029-04-18

Abstract

The utility model belongs to the technical field of road construction, a treatment structure suitable for deep soft soil roadbed is disclosed, its technical scheme main points are including bed course and building grid layer, the building grid layer includes first geogrid and first coarse sand layer, first coarse sand layer is laid on first geogrid, still includes the earth anchor that sets up in soft soil roadbed, the earth anchor sets up in pairs in the bed course both sides, is equipped with the hawser between earth anchor and the first geogrid and links to each other, has and can fix first geogrid simply effectively, avoids it to move in the process of filling up and extruding the coarse sand, guarantees that building grid layer has sufficient intensity; when being connected with the ground anchor, the first geogrid is convenient and quick, the structure of the first geogrid is not damaged, and the first geogrid can be kept in proper tensioning.

Description

Punishment structure suitable for deep weak soil roadbed

Technical Field

The utility model relates to a technical field of road construction, in particular to punishment structure suitable for deep weak soil roadbed.

Background

Soft soil, such as Bohai Bay, Yangtze river delta, Zhujiang delta, Zhejiang and Min coastal areas and the like, is widely distributed in coastal areas, Yangtze river, lake and the like of China. With the rapid development of construction engineering in China, the number of construction engineering projects is continuously increased, and projects such as industrial and civil buildings, expressways, high-speed rails, subways, water conservancy projects, environments, ports, airport runways and the like are inevitably constructed on soft soil foundations.

The soft soil foundation is a bad foundation which needs to be treated before construction, and aims to mainly improve the engineering property of foundation soil and meet the requirements of buildings or structures on the stability and deformation of the foundation. Including improving the deformation characteristics and permeability of the foundation soil, increasing its shear strength and resistance to liquefaction, eliminating other adverse effects, etc.

Chinese patent publication No. CN207259891U discloses a soft soil roadbed reinforcing structure, which comprises a ground pile layer consisting of a plurality of ground piles driven into a soft soil roadbed; the cushion layer is laid on the soft soil roadbed; the civil grid layer is laid on the cushion layer; the crushed stone layer is laid on the civil grid layer; the asphalt concrete pavement layer is laid on the gravel layer; two rows of pile walls are respectively arranged at two sides of the asphalt concrete pavement layer, each row of pile walls comprises a plurality of side piles which are arranged at intervals along a preset direction, each side pile comprises a pile body with a lower end driven into the soft soil roadbed and an upper end extending to the asphalt concrete pavement layer and a first convex rib with one end connected with the pile body and the other end extending into the asphalt concrete pavement layer.

According to the soft soil roadbed reinforcement structure, the first convex ribs are arranged on the pile bodies of the side piles, so that the side piles can be further fixed to reduce the risk of losing the side piles, the asphalt concrete pavement layer can be reinforced, and the stability and the bearing capacity are improved.

When the civil grille layer is laid, the civil grille is firstly paved on the cushion layer, and then coarse sand is filled on the cushion layer and compacted. In the process, the geogrid needs to be kept flat, the condition of disorder is not allowed to occur, the geogrid is not effectively fixed by the soft soil roadbed reinforcing structure, the geogrid is easy to impact during padding and coarse sand extrusion, the geogrid is easy to deviate, bulge, wrinkle and even stack, and the effect that the geogrid restricts the coarse sand is weakened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a punishment structure suitable for deep weak soil road bed has and can simply fix first geogrid effectively, avoids it to remove at the in-process of filling up and extrudeing the coarse sand, guarantees that building grid layer has the advantage of sufficient intensity.

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

the utility model provides a punishment structure suitable for dark weak soil road bed, includes bed course and building grid layer, building grid layer includes first geogrid and first gross sand layer, first gross sand layer is laid on first geogrid, still including setting up the earth anchor in the weak soil road bed, the earth anchor sets up in the bed course both sides in pairs, and it links to each other to be equipped with the hawser between earth anchor and the first geogrid.

Through adopting above-mentioned technical scheme, in the anchor embedding weak soil road bed, unable random removal, hawser is even as an organic whole with first geogrid and anchor, can simply be fixed first geogrid effectively, avoids it to remove at the in-process of filling up and extrudeing the coarse sand, guarantees that the building grid layer has sufficient intensity.

Further, still including setting up lower plate and the punch holder in pairs in first geogrid both sides, the lower plate offsets with the lower surface of first geogrid, and the lower plate links to each other with the hawser, the punch holder offsets with the upper surface of first geogrid, punch holder and punch holder bolted connection.

Through adopting above-mentioned technical scheme, the punch holder is in the same place with the lower plate bolt joint, and is fixed with first geogrid centre gripping to be connected hawser and first geogrid, convenient and fast can not destroy first geogrid simultaneously.

Furthermore, a turn buckle is arranged between the ground anchor and the mooring rope.

Through adopting above-mentioned technical scheme, set up the turn buckle and link to each other ground anchor and hawser, can adjust three's whole length, make first geogrid keep moderate degree tensioning.

Furthermore, side slopes are arranged on two sides of the civil engineering grating layer.

Through adopting above-mentioned technical scheme, set up the side slope and can support building grid layer both sides effectively, avoid the grit landing to lead to the road bed both sides to appear collapsing.

Furthermore, a second geogrid is laid on the side slope, and a second coarse sand layer is laid on the second geogrid.

By adopting the technical scheme, the connection strength of the side slope can be further enhanced by paving the second geogrid and the second coarse sand layer, and the side slope is prevented from collapsing automatically.

Furthermore, a dry masonry layer is paved on the second coarse sand layer.

Through adopting above-mentioned technical scheme, lay the large size slabstone on the second coarse sand layer, cover the second coarse sand layer, avoid the relative less coarse sand of volume directly to expose outside, can strengthen the anti-wind and the shock resistance of side slope.

Furthermore, a leveling layer is arranged below the cushion layer and is filled with the rubbles.

Through adopting above-mentioned technical scheme, easy ponding of depression highway section, soft soil roadbed ponding department then can form thicker silt, if directly lay medium sand or coarse sand in this department, the relative less grit of volume still has certain mobility after mixing with mud, is difficult to reach sufficient structural strength, so need be at the big piece stone of this department fill size, extrude silt when laying the bed course with soft soil roadbed flattening.

Furthermore, stone chips are filled in the leveling layer.

Through adopting above-mentioned technical scheme, the stone chip supports the stone chip with the gap filling between the stone chip, makes the area of exerting oneself greatly increased of stone chip, further extrudes silt simultaneously.

To sum up, the utility model discloses following beneficial effect has:

1. the first geogrid can be fixed simply and effectively, movement of the first geogrid in the processes of padding and coarse sand extrusion is avoided, and the civil grille layer is guaranteed to have enough strength;

2. when the first geogrid is connected with the ground anchor, the connection is convenient and quick, the structure of the first geogrid is not damaged, and the first geogrid can be properly tensioned.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a sectional view of the embodiment;

FIG. 3 is an enlarged view at A in FIG. 1;

fig. 4 is a schematic view showing the connection relationship among the first geogrid, the cable and the ground anchor in the embodiment.

In the figure, 1, a soft soil roadbed; 2. leveling layer; 3. a cushion layer; 4. a civil grid layer; 5. side slope; 6. a ground anchor; 7. a cable; 8. a lower splint; 9. an upper splint; 10. a turn buckle; 41. a first geogrid; 42. a first coarse sand layer; 51. a second geogrid; 52. a second coarse sand layer; 53. and (5) dry-laying a rubble layer.

Detailed Description

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

Example (b):

a treatment structure suitable for deep soft soil roadbed is shown in figure 1 and figure 2 and comprises a leveling layer 2, a cushion layer 3, three civil grid layers 4 and side slopes 5 arranged on two sides of the civil grid layers 4 in pairs. Wherein, screed-coat 2, bed course 3 and building grid layer 4 set gradually from lower to upper, and screed-coat 2 only sets up to the depression highway section of soft soil roadbed 1, other highway sections leveling separately.

As shown in fig. 1 and 2, for the depressed road section with thick silt, rubbles are thrown into the depressed road section with thick silt, the diameter of the rubbles is not less than 300mm, and then stone chips are filled to form the leveling layer 2.

As shown in fig. 1 and 2, the mat 3 has a thickness of 300mm and is formed by laying medium sand or coarse sand.

As shown in fig. 1 and 2, the civil engineering grid layer 4 is composed of a first geogrid 41 and a first coarse sand layer 42, the first geogrid 41 is laid at the bottom of the first coarse sand layer 42, and the first coarse sand layer 42 is 200mm thick and is formed by laying coarse sand.

As shown in fig. 1 and 3, each first geogrid 41 is provided with a plurality of cables 7 and ground anchors 6 in pairs on both sides. The side of the first geogrid 41 is connected with the ground anchor 6 through the cable 7 and fixed through the ground anchor 6.

As shown in fig. 3 and 4, the first geogrid 41 is provided with a lower clamping plate 8 and an upper clamping plate 9 in pairs at both sides, both of which are rectangular and arranged along the horizontal direction, and the two clamping plates are opposite. The lower clamping plate 8 is fixedly connected with one end, back to the ground anchor 6, of the cable 7 and is tightly attached to the lower surface of the first geogrid 41, the upper clamping plate 9 is tightly attached to the upper surface of the first geogrid 41, and the lower clamping plate 8 is matched to clamp and fix the first geogrid 41.

As shown in fig. 3 and 4, the upper clamping plate 9 is bolted to the lower clamping plate 8, and part of the bolts pass through the adjacent meshes of the first geogrid 41, so that the first geogrid 41 cannot be separated from the upper clamping plate 9 and the lower clamping plate 8.

As shown in fig. 3 and 4, the ground anchor 6 is embedded in the soft soil roadbed 1 at both sides of the cushion layer 3, the top end of the ground anchor is in hanging and buckling fit with the turn buckle 10, and one end of the turn buckle 10, which is back to the ground anchor 6, is connected with the cable 7.

As shown in fig. 1, the slope 5 is formed by laying coarse sand, is flush with the top civil grille layer 4, is laid with a second geogrid 51, and is laid with a second coarse sand layer 52 on the second geogrid 51. Second coarse sand layer 52 is laid by the coarse sand and is formed, and thickness is 100mm, has laid dry masonry layer 53 above second coarse sand layer 52, carries out better protection to bed course 3 and building grid layer 4.

The specific implementation process comprises the following steps:

filling rubbles and stone chips in the depression section of the soft soil roadbed 1, extruding sludge, laying medium sand or coarse sand to form a cushion layer 3, and then alternately laying three groups of first geogrid 41 layers and first coarse sand layers 42. The first geogrid 41 layer is connected with the ground anchor 6 through the cable 7, the ground anchor 6 is embedded into the soft soil roadbed 1, two side edges of the first geogrid 41 layer are fixed, and the movement of the first geogrid 41 layer in the process of laying the first coarse sand layer 42 is avoided. And finally, paving a side slope 5, and paving a second geogrid 51 layer, a second coarse sand layer 52 and a dry masonry layer 53 on the side slope 5 in sequence.

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.

Claims

1. The utility model provides a punishment structure suitable for dark soft soil road bed, includes bed course (3) and building grid layer (4), building grid layer (4) are including first geogrid (41) and first coarse sand layer (42), first coarse sand layer (42) are laid on first geogrid (41), its characterized in that: still including setting up earth anchor (6) in soft soil roadbed (1), earth anchor (6) set up in bed course (3) both sides in pairs, and earth anchor (6) are equipped with hawser (7) between with first geogrid (41) and link to each other.

2. The treatment structure suitable for the deep soft soil roadbed according to claim 1, characterized in that: still including setting up lower plate (8) and upper plate (9) in pairs in first geogrid (41) both sides, lower plate (8) offset with the lower surface of first geogrid (41), and lower plate (8) link to each other with hawser (7), upper plate (9) offset with the upper surface of first geogrid (41), and upper plate (9) and lower plate (8) bolt connect.

3. The treatment structure suitable for the deep soft soil roadbed according to claim 1, characterized in that: a turn buckle (10) is arranged between the ground anchor (6) and the mooring rope (7).

4. The treatment structure suitable for the deep soft soil roadbed according to claim 1, characterized in that: and two sides of the civil engineering grating layer (4) are provided with side slopes (5).

5. A treatment structure suitable for deep soft soil foundations according to claim 4, characterized in that: and a second geogrid (51) is paved on the side slope (5), and a second coarse sand layer (52) is paved on the second geogrid (51).

6. A treatment structure suitable for deep soft soil foundations as claimed in claim 5, wherein: and a dry masonry layer (53) is paved on the second coarse sand layer (52).

7. The treatment structure suitable for the deep soft soil roadbed according to claim 1, characterized in that: the cushion layer (3) is provided with a leveling layer (2) below, and the leveling layer (2) is filled with the rubble.

8. A treatment structure suitable for deep soft soil foundations as claimed in claim 7, wherein: and stone chips are also filled in the leveling layer (2).