CN216107863U - Can reduce uneven indisputable tailing of subsiding and add muscle embankment structure - Google Patents
Can reduce uneven indisputable tailing of subsiding and add muscle embankment structure Download PDFInfo
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- CN216107863U CN216107863U CN202121429893.3U CN202121429893U CN216107863U CN 216107863 U CN216107863 U CN 216107863U CN 202121429893 U CN202121429893 U CN 202121429893U CN 216107863 U CN216107863 U CN 216107863U
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Abstract
The utility model discloses an iron tailing reinforced embankment structure capable of reducing uneven settlement, which comprises an iron tailing reinforced embankment and a geocell reinforced cushion layer, wherein the geocell reinforced cushion layer is laid on the surface of a foundation, and the iron tailing reinforced embankment is laid on the upper surface of the geocell reinforced cushion layer; the iron tailing reinforced embankment comprises iron tailing fillers and unidirectional geogrids laid in a layered mode, wherein the iron tailing fillers are filled among the unidirectional geogrids; the geocell reinforced cushion layer comprises geocells and gravel layers laid up from top to bottom. The utility model avoids the problem that the embankment is easy to settle unevenly due to uneven overlying load and self gravity action in embankment engineering, has the advantages of convenient construction, low cost and good overall stability, and is suitable for embankment filling along roads, railways and the like.
Description
Technical Field
The utility model belongs to the technical field of road and bridge engineering, and particularly relates to an iron tailing reinforced embankment structure capable of reducing uneven settlement.
Background
The iron tailings are one kind of tailings, have high yield, low pollution and high utilization rate, are applied to road construction very early and are tailing materials with the widest application range at present. Through the development of many years, China has made great progress in the aspect of tailing application, the construction process of the embankment is similar to that of a rocky embankment, the embankment filler is stable and reliable, and the problem of iron tailing stockpiling is solved.
However, in the embankment engineering along the railway and the highway, due to uneven overlying load and self-gravity action, uneven settlement of the embankment is easy to cause. The embankment is the foundation of the road surface, uneven settlement of the embankment inevitably causes unevenness of the road surface, and causes a lot of diseases on the road surface, mainly manifested as pits, arches, waves, joint steps, rolling tracks, settlement of the road surfaces at the two ends of a bridge head or a culvert, and deep-scaled jump of a bridge, and the like, which not only hardly meets the requirement of high-speed driving of an automobile, but also increases fuel consumption and tire wear of the automobile, increases transportation cost, increases transportation time, reduces social and economic benefits and even endangers driving safety.
SUMMERY OF THE UTILITY MODEL
The utility model provides an iron tailing reinforced embankment structure capable of reducing uneven settlement, which is used for solving the problem that uneven settlement of an embankment is easily caused due to uneven overlying load and self gravity action in an embankment project, has the advantages of convenience and quickness in construction, low manufacturing cost and good overall stability, and is suitable for embankment filling along roads, railways and the like.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the iron tailing reinforced embankment structure capable of reducing uneven settlement comprises an iron tailing reinforced embankment and a geocell reinforced cushion layer, wherein the geocell reinforced cushion layer is laid on the surface of a foundation, and the iron tailing reinforced embankment is laid on the upper surface of the geocell reinforced cushion layer; the iron tailing reinforced embankment comprises iron tailing fillers and unidirectional geogrids laid in a layered mode, wherein the iron tailing fillers are filled among the unidirectional geogrids; the geocell reinforced cushion layer comprises geocells and gravel layers which are paved up and down.
Furthermore, the unidirectional geogrid comprises through-laid grids and non-through-laid grids which are alternately laid, a plurality of layers of non-through-laid grids are arranged between every two adjacent through-laid grids, and iron tailing fillers are filled between every two adjacent non-through-laid grids and between every two adjacent through-laid grids.
Further, the laying length of the non-through-laid geogrids is 0.3 times of the height of the embankment, the distance between every two adjacent through-laid grids is 3m, and the distance between every two adjacent non-through-laid grids and the distance between every two adjacent through-laid grids is 1 m.
Further, the iron tailing reinforced embankment is formed by alternately pressing unidirectional geogrids and iron tailing fillers.
Furthermore, the particle size of the iron tailing filler is not more than 10cm, graded broken stones are adopted in the broken stone layer, and the particle size of the broken stones is not more than 5 cm.
Further, the unidirectional geogrid and the geocell are processed by high-density polyethylene.
Further, the end part of the unidirectional geogrid is of a bag returning and folding structure.
Further, the bed compactibility was 93% and the bed portion was 96%.
Due to the adoption of the structure, compared with the prior art, the utility model has the technical progress that:
(1) in order to meet the requirements of the embankment on the soft soil foundation on settlement and stability, the embankment reinforcing structure is purposefully added, and the geocell reinforced cushion layer is laid on the soft soil foundation, so that the load of the overlying embankment and the self gravity can be transmitted to the foundation through the geocell reinforced cushion layer and uniformly applied to the foundation, the local settlement caused by uneven stress distribution of the foundation is avoided, and the uneven settlement of the embankment can be effectively reduced; the upper part and the lower part of the geocell layer are respectively paved with the gravel layer, the gravel layer has good bearing capacity and water permeability, the stability of the gravel layer is far superior to that of a soil body paved in the traditional technology, and the structural stability of the embankment is further improved; the method comprises the following steps of taking iron tailing fillers as filling soil bodies, laying ribs in the soil bodies in a layered mode, namely adding a plurality of layers of unidirectional geogrids, filling the iron tailing fillers as laying soil bodies among the unidirectional geogrids to form a horizontal rib adding layer, achieving the purposes of improving the performance of the soil bodies and enhancing the overall stability of the embankment through the interaction between the ribs and the soil bodies, further increasing the stability of the embankment structure and reducing uneven settlement;
(2) the iron tailing reinforced embankment structure capable of reducing uneven settlement is convenient and fast to construct, high in efficiency and good in stability after construction is completed; the used filler is waste iron tailing, so that the problem of iron tailing stockpiling is solved, and the economic benefit is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
In the drawings:
fig. 1 is a cross-sectional view of an iron tailing reinforced embankment structure capable of reducing uneven settlement according to the utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic diagram of a packet returning and folding structure of the through-laid grille in the embodiment of the utility model.
Labeling components: 1-non-through-laid grids, 2-through-laid grids, 3-gravel layers, 4-geocells and 5-iron tailing fillers.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The utility model discloses an iron tailing reinforced embankment structure capable of reducing uneven settlement, which comprises an iron tailing reinforced embankment and a geocell reinforced cushion layer, wherein the geocell reinforced cushion layer is laid on the surface of a foundation, and the iron tailing reinforced embankment is laid on the upper surface of the geocell reinforced cushion layer; the iron tailing reinforced embankment comprises iron tailing fillers 5 and unidirectional geogrids laid in layers, wherein the iron tailing fillers 5 are filled among the unidirectional geogrids, the iron tailing reinforced embankment is formed by alternately pressing the unidirectional geogrids and the iron tailing fillers 5, the compaction degree below a foundation bed is 93%, and the foundation bed part is 96%; the geocell reinforced cushion layer comprises geocells 4, and gravel layers 3 are paved on the upper portion and the lower portion of the geocells 4. Specifically, the particle size of the iron tailing filler 5 is not more than 10cm, and the crushed stone layer 3 is graded crushed stone, and the particle size of the crushed stone is not more than 5 cm. The unidirectional geogrids and the geocells 4 are processed from high density polyethylene.
The utility model has the beneficial effects that: in order to meet the requirements of the embankment on the soft soil foundation on settlement and stability, the embankment reinforcing structure is purposefully added, and the geocell reinforced cushion layer is laid on the soft soil foundation, so that the load of the overlying embankment and the self gravity can be transmitted to the foundation through the geocell reinforced cushion layer and uniformly applied to the foundation, the local settlement caused by uneven stress distribution of the foundation is avoided, and the uneven settlement of the embankment can be effectively reduced; the upper and lower parts of the 4 layers of the geocell are respectively paved with the gravel layer 3, the gravel layer 3 has good bearing capacity and water permeability, the stability of the gravel layer is far superior to that of a soil body paved in the traditional technology, and the structural stability of the embankment is further improved; the iron tailing filler 5 is used for filling soil, the rib materials are paved in a layered mode, namely, multiple layers of unidirectional geogrids are additionally arranged, the iron tailing filler 5 is used for paving the soil and is filled between the unidirectional geogrids, a horizontal rib layer can be formed, the purposes of improving the performance of the soil and enhancing the overall stability of the embankment are achieved through interaction between the rib materials and the soil, the stability of the embankment structure is further improved, and uneven settlement is reduced.
As a preferred embodiment, as shown in fig. 1, the unidirectional geogrid comprises through-laid grids 2 and non-through-laid grids 1 which are alternately laid, a plurality of layers of non-through-laid grids 1 are arranged between every two adjacent through-laid grids 2, and iron tailing fillers 5 are filled between every two adjacent non-through-laid grids 1 and between every two adjacent through- laid grids 2 and 1. The laying length of the non-through laying geogrids is 0.3 times of the height of the embankment, the distance between every two adjacent through laying grids is 3m, and the distance between every two adjacent non-through laying grids 1 and the distance between every two adjacent through laying grids 2 and 1 is 1 m. The embankment filling adopts a mode of combining the through-laid grids 2 with the non-through-laid grids 1, the non-through-laid grids 1 are densely laid on two sides of the embankment, the load bearing of the edges of the two sides of the embankment is increased, the two sides of the embankment are prevented from sinking and sinking, meanwhile, through the laying of the through-laid grids 2, acting forces spreading towards the two sides can be generated when the embankment bears the load, the through-laid grids 2 provide reaction forces pulling back towards the middle, the acting forces and the reaction forces are offset with each other, the overall structural stability is increased, the uneven settlement of the left side and the right side of a road is reduced, the earth grid reinforced cushion layer is adopted on the surface layer of the foundation, the uneven settlement of the whole embankment is reduced, and the overall stability of the embankment is increased.
Furthermore, in order to stably lay the interlayer unidirectional geogrids and prevent the embankment from shifting in the layer-by-layer compaction process, the multilayer unidirectional geogrids can form a whole in a relatively stable manner, the structural stability of the end face of the embankment is improved, and the end parts of the unidirectional geogrids are of a wrap-back folding structure. Specifically, after the grids are paved, fixing the grids and the soil body at the cross ribs of the grids by using U-shaped nails every 2m, and after the grids are folded back, fixing the grids and the soil body by adopting the same method.
The construction steps of the utility model are as follows:
(1) paving a crushed stone layer 3 on the surface of the foundation, and rolling and flattening by using a road roller;
(2) laying a layer of geocell 4 on the gravel layer 3, anchoring the geocell and a lower-layer soil body at the node of the geocell 4 through a U-shaped nail, filling the geocell with gravel and compacting;
(3) paving a gravel layer 3 above the geocell 4, and compacting;
(4) filling iron tailing filler 5, filling and rolling in layers, wherein the loose thickness is 40cm, and rolling and compacting by using a road roller;
(5) laying unidirectional geogrids, laying a layer of non-through laying grids 1 every time iron tailing fillers 5 with the height of 1m are filled, wherein the laying length of the non-through laying grids 1 is 0.3 times of the height of a embankment; laying a layer of through-laid grating 2 every time the iron tailing filler 5 with the height of 3m is filled;
(6) and (3) returning the end part (slope surface) of the laid unidirectional geogrid, fixing the geogrid and the soil body at the transverse rib of the tail geogrid by using U-shaped nails after the geogrid is laid flatly, fixing the geogrid and the soil body at intervals of 2m in the middle, returning and folding, and fixing the geogrid and the soil body by adopting the same method.
(7) And (5) repeating the steps (4) to (6), and constructing layer by layer until the embankment top is filled.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a can reduce uneven settlement's indisputable tailing adds muscle embankment structure which characterized in that: the iron tailing reinforced embankment comprises an iron tailing reinforced embankment and a geocell reinforced cushion layer, wherein the geocell reinforced cushion layer is laid on the surface of a foundation, and the iron tailing reinforced embankment is laid on the upper surface of the geocell reinforced cushion layer; the iron tailing reinforced embankment comprises iron tailing fillers and unidirectional geogrids laid in a layered mode, wherein the iron tailing fillers are filled among the unidirectional geogrids; the geocell reinforced cushion layer comprises geocells and gravel layers laid up from top to bottom.
2. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 1, wherein: the unidirectional geogrid comprises through-laid grids and non-through-laid grids which are alternately laid, a plurality of layers of non-through-laid grids are arranged between every two adjacent through-laid grids, and iron tailing fillers are filled between every two adjacent non-through-laid grids and between every two through-laid grids and the corresponding non-through-laid grids.
3. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 2, wherein: the laying length of the non-through laying geogrids is 0.3 times of the height of the embankment, the distance between every two adjacent through laying grids is 3m, and the distance between every two adjacent non-through laying grids and the distance between every two adjacent through laying grids is 1 m.
4. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 1, wherein: the iron tailing reinforced embankment is formed by alternately pressing unidirectional geogrids and iron tailing fillers.
5. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 1, wherein: the particle size of the iron tailing filler is not more than 10cm, graded broken stones are adopted in the broken stone layer, and the particle size of the broken stones is not more than 5 cm.
6. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 1, wherein: the unidirectional geogrid and the geocell are processed by high-density polyethylene.
7. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 1, wherein: the end part of the unidirectional geogrid is of a bag returning and folding structure.
8. The reinforced embankment structure for iron tailings capable of reducing uneven settlement according to claim 1, wherein: the under-bed compaction was 93% and the bed fraction was 96%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121429893.3U CN216107863U (en) | 2021-06-25 | 2021-06-25 | Can reduce uneven indisputable tailing of subsiding and add muscle embankment structure |
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| CN202121429893.3U CN216107863U (en) | 2021-06-25 | 2021-06-25 | Can reduce uneven indisputable tailing of subsiding and add muscle embankment structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114318988A (en) * | 2022-01-07 | 2022-04-12 | 安徽省交通规划设计研究总院股份有限公司 | Non-blocking reinforced roadbed |
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2021
- 2021-06-25 CN CN202121429893.3U patent/CN216107863U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114318988A (en) * | 2022-01-07 | 2022-04-12 | 安徽省交通规划设计研究总院股份有限公司 | Non-blocking reinforced roadbed |
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