CN217378957U - Miniature pile supporting arrangement structure for reinforcing slag pile body side slope - Google Patents
Miniature pile supporting arrangement structure for reinforcing slag pile body side slope Download PDFInfo
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- CN217378957U CN217378957U CN202221341863.1U CN202221341863U CN217378957U CN 217378957 U CN217378957 U CN 217378957U CN 202221341863 U CN202221341863 U CN 202221341863U CN 217378957 U CN217378957 U CN 217378957U
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- slag
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- 229910000831 Steel Inorganic materials 0.000 claims description 112
- 239000010959 steel Substances 0.000 claims description 112
- 239000002893 slag Substances 0.000 claims description 53
- 230000003014 reinforcing Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 16
- 239000011435 rock Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 8
- 230000000875 corresponding Effects 0.000 description 7
- 238000005553 drilling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 210000003205 Muscles Anatomy 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The utility model relates to a miniature stake support arrangement structure of reinforcement heap sediment body side slope belongs to heap sediment body side slope support technical field. The utility model discloses a side slope, the heap sediment body and steel-pipe pile, the heap sediment body is located on the domatic of side slope, the top surface or the side of the heap sediment body are provided with a plurality of steel-pipe piles, the inner of steel-pipe pile stretches into in the side slope, the outer end of steel-pipe pile stretches out from the top surface or the side of the heap sediment body, a plurality of steel-pipe piles that set up along side slope length direction interval are one row, the steel-pipe pile is provided with the multirow, the interval A is set for to the row interval of the stake of adjacent two rows steel-pipe in its inner end, the interval B is set for to the row interval of the steel-pipe pile of adjacent two rows in its outer end, interval A is greater than interval B. The utility model discloses not only can greatly reduce construction platform, can greatly increase the consolidation grouting scope of the corresponding ground body of heap sediment body and side slope moreover, improve the stability of heap sediment body side slope.
Description
Technical Field
The utility model relates to a miniature stake support arrangement structure of reinforcement heap sediment body side slope belongs to heap sediment body side slope support technical field.
Background
With the gradual development of foundation construction engineering in various engineering fields at present, the foundation construction engineering is often limited by the geographical environment of an engineering construction site, and in order to meet the requirements of a construction site or a building, earth and stone cubes such as excavated slag and the like are often required to be backfilled to form a filled slag slope. In order to improve the bearing capacity or safety factor of the slope foundation, the anti-slip retaining wall is usually adopted for treatment, but the embedding depth is usually larger because the retaining wall excavation foundation needs to be embedded into a stable stratum, on one hand, the earth and stone engineering quantity cannot be controlled, on the other hand, the foundation is easy to collapse due to instability and collapse, the economic cost is higher, and the slope stability has larger potential safety hazard.
According to the macroscopic knowledge of the slag heap, combined with field exploration and indoor tests, it is often very difficult to meet the stability requirement of water conservancy or building slopes without any measures, and corresponding engineering measures are generally needed for reinforcement. According to the characteristics of the slag bulk side slope, the porosity of the slag bulk is high, consolidation grouting is easy to carry out, and currently, a commonly adopted reinforcement measure is to arrange steel pipe piles in the side slope and the slag bulk, wherein the steel pipe piles are cast-in-place piles formed by adopting drilling, reinforcing bars and pressure grouting construction processes. The steel pipe piles are arranged at certain intervals, so that a steel pipe pile group can be formed, a pile group effect is formed, and a good consolidation effect can be achieved on the slag piling body. According to engineering practice experience, the stability of the slag heap is mainly controlled by the mechanical parameters of the slag heap, namely the internal friction angle and the cohesive force, and the cohesive force has great influence on the stability coefficient of the side slope. The cohesive force of the natural slag heaps is very low, so that the improvement of the cohesive force parameter of the slag heaps is very critical. As shown in fig. 1 and 2, the conventional method in the prior art is to arrange a steel pipe pile group vertically perpendicular to the top surface of the slag stack body or to arrange a steel pipe pile group horizontally on the side surface of the slag stack body. However, in consideration of disturbance to the slag body, in the implementation of the above embodiment, the steel pipe pile can only adopt a micro pile with a pile diameter less than 400mm and a slenderness ratio greater than 30, and the method is limited by the limitation that the size of the steel pipe pile is not large, so that the consolidation range of the side slope is not large, and the maximum capacity of the pile body is not exerted for providing shear resistance on the sliding surface of the side slope. In addition, when the construction method is adopted for implementation, a construction scheme of reinforcing the side slope by rotary excavating piles is generally adopted, a drilling machine is firstly used for drilling a hole to a certain depth of a rock stratum, then a steel pipe is inserted, and finally slurry (cement slurry or mortar) with certain pressure is adopted for grouting the steel pipe to consolidate the slag heap body and the corresponding rock-soil body.
Patent publication No. CN107975050A discloses another method for stabilizing slag pile by using steel pipe piles, which mainly comprises the following steps: in the slag piling process, a plurality of horizontal steel pipes which penetrate through the sliding slag body and penetrate into the stable slag body, are provided with a plurality of grouting holes on the side surfaces and have intervals of 2.0-2.5 m are arranged in a layered mode, and a lead wire mesh for fixing each steel pipe is connected between every two layers of steel pipes; the outer end of the steel pipe is positioned outside the sliding slag body; after the slag filling is finished, grouting the steel pipe by a grouting machine through a grouting pipe; and after grouting is finished, plugging the steel pipe. The slag piling body is engineering waste slag, tailing slag or ash slag of a thermal power plant. The steel pipe and the lead wire net are laid before the upper slag body. The direction of the grouting holes in the steel pipe is parallel to the lead wire mesh, and the steel pipe is inserted into the stable slag body by 1-1.5 m. The method is characterized in that a steel pipe is fixed in advance through a lead wire mesh during slag filling, and grouting is performed after the slag filling is completed, but the steel pipe is paved in layers in the construction process, so that each layer needs to be fixed, and the procedure is complicated; and the steel pipe also adopts the mode of horizontal arrangement, and the steel pipe is crossing with the slip plane for the low angle, is not very favorable to the performance of pile body self antiskid effect, does not exert the maximum effect of material.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the weak point that exists among the above-mentioned prior art, provide a consolidate miniature stake supporting arrangement structure of heap sediment body side slope, not only can greatly reduce construction platform, can greatly increase the consolidation grout scope of the corresponding ground body of heap sediment body and side slope in addition, improve the stability of heap sediment body side slope.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a consolidate miniature stake supporting arrangement structure of heap sediment body side slope, including the side slope, the heap sediment body and steel-pipe pile, the heap sediment body is located on the domatic of side slope, the top surface or the side of heap sediment body are provided with a plurality of steel-pipe piles, the inner of steel-pipe pile stretches into in the side slope, the outer end of steel-pipe pile stretches out from the top surface or the side of heap sediment body, a plurality of steel-pipe piles that set up along side slope length direction interval are one row, the steel-pipe pile is provided with the multirow, the steel-pipe pile of adjacent two rows sets for interval A at the row interval of its inner end, the steel-pipe pile of adjacent two rows sets for interval B at the row interval of its outer end, interval A is greater than interval B.
Further, the method comprises the following steps: when the outer end of the steel pipe pile extends out of the top surface of the slag piling body, the angle value of the included angle of the axis of the steel pipe pile in the nth row relative to the vertical direction is set as a n Formed array of numbers { a n The arithmetic is an arithmetic progression;
when the outer end of the steel pipe pile extends out of the side surface of the slag piling body, the angle value of the included angle of the axis of the steel pipe pile in the n-th row relative to the horizontal direction is set as b n Array of numbers formed { b } n And the arithmetic is an arithmetic progression.
Further, the method comprises the following steps: the row spacing of the outer ends of the two adjacent rows of steel pipe piles is equal.
Further, the method comprises the following steps: the steel pipe piles in each row are uniformly arranged at intervals along the length direction of the side slope, and the steel pipe piles in two adjacent rows are arranged in a staggered mode.
Further, the method comprises the following steps: each steel pipe pile is provided with a plurality of grouting holes on the side wall of the steel pipe, the grouting holes are uniformly arranged in a row at intervals along the length direction of the steel pipe pile, and the grouting holes are uniformly arranged in a plurality of rows at intervals along the circumferential direction of the steel pipe pile; the grouting holes of two adjacent rows are arranged in a staggered manner.
Further, the method comprises the following steps: and each steel pipe pile is fixedly provided with an anchor bar bundle in the steel pipe, and the anchor bar bundles are arranged along the length direction of the steel pipe pile.
Further, the method comprises the following steps: the anchor bar bundle is formed by welding a plurality of steel bars; the anchor bar bundle is fixedly arranged on the axis of the steel pipe through a connecting piece.
Further, the method comprises the following steps: the steel pipe pile is a miniature pile with the pile diameter smaller than 400mm and the slenderness ratio larger than 30; the pile diameter refers to the outer diameter of the steel pipe, and the slenderness ratio refers to the ratio of the length of the steel pipe to the outer diameter of the steel pipe.
The utility model has the advantages that: because the row spacing of the steel pipe piles at the outer ends of the steel pipe piles is small, the required construction site is small, and the risk of slope collapse is not easy to occur during construction. The steel pipe piles are arranged at the inner ends of the steel pipe piles in a diffused mode, so that the consolidation grouting range of corresponding rock and soil bodies of the slag piling body and the side slope can be greatly enlarged, the area for consolidating the rock and soil bodies in the dangerous slip arc is obviously larger, and the stability of the slag piling body and the side slope is improved. The utility model discloses an among the preferred embodiment, steel-pipe pile and grout hole arrange scientific and reasonable, can effectively reduce the required platform of construction and enlarge the scope that the slip casting concreties the ground body, improve regional obvious the expansion to slag body mechanics parameter, can greatly guarantee the effect of steel-pipe pile slip casting postconsolidation heap slag body. The anchor bar bundles arranged in the steel pipe pile can greatly improve the self shear strength of the steel pipe pile. The utility model discloses a miniature steel-pipe pile is strutted, can greatly reduce the disturbance to the heap sediment body.
Drawings
Fig. 1 is a schematic structural diagram of a first distribution mode of steel pipe piles in the prior art;
fig. 2 is a schematic structural view of a second distribution mode of the steel pipe piles in the prior art;
fig. 3 is a schematic structural view of a first distribution mode of the steel pipe piles in the utility model;
fig. 4 is a schematic structural view of a second distribution mode of the steel pipe piles in the present invention;
fig. 5 is a schematic plan view of the steel pipe pile of the present invention;
FIG. 6 is a schematic cross-sectional view of a steel pipe pile according to the present invention;
fig. 7 is the utility model discloses well steel pipe pile's pipe shaft is along axis expansion back grout hole plane arrangement sketch map.
Labeled as: 1-side slope, 2-slag piling, 3-steel pipe pile, 4-grouting hole, 5-anchor bar bundle, 6-construction platform, 7-original side slope surface, 8-dangerous slip arc and 9-consolidation grouting range line.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 to 4, the utility model discloses a side slope 1, the heap sediment body 2 and steel-pipe pile 3, the heap sediment body 2 is located on slope surface of side slope 1, the top surface or the side of the heap sediment body 2 are provided with a plurality of steel-pipe pile 3, the inner of steel-pipe pile 3 stretches into in the side slope 1, the outer end of steel-pipe pile 3 stretches out from the top surface or the side of the heap sediment body 2, a plurality of steel-pipe pile 3 that set up along 1 length direction interval of side slope are one row, steel-pipe pile 3 is provided with the multirow, steel-pipe pile 3 of adjacent two rows sets for interval A at its inner row interval, steel-pipe pile 3 of adjacent two rows sets for interval B at the row interval of its outer end, interval A is greater than interval B.
Because the row spacing of the steel pipe pile 3 at the outer end is smaller, the required construction platform 6 is smaller, and the risk of slope collapse is not easy to occur during construction. The steel pipe piles 3 are arranged at the inner ends of the steel pipe piles in a large row spacing and are arranged in a diffusing mode, the consolidation grouting range of the corresponding rock and soil bodies of the slag piling body 2 and the side slope 1 can be greatly increased, the area for consolidating the rock and soil bodies in the dangerous slip arc is obviously larger, and therefore the stability of the slag piling body 2 and the side slope 1 is improved.
For improving the structural stability, the utility model discloses well steel pipe pile 3's preferred arrangement is that, when the outer end of steel-pipe pile 3 stretches out from the top surface of the heap sediment body 2, the angle value of the axis of the steel-pipe pile 3 of nth row for the contained angle of vertical direction is set for a n Formed array of numbers { a n The arithmetic is an arithmetic progression; when the outer end of the steel pipe pile 3 extends out of the side surface of the slag body 2, the angle value of the included angle of the axis of the steel pipe pile 3 in the n-th row relative to the horizontal direction is set as b n Array of numbers formed { b } n And the arithmetic is an arithmetic progression. In the above embodiments, a n Either positive or negative; b n Either positive or negative. With a n For example, when the inner end of the steel pipe pile 3 is inclined inward with respect to the vertical axisWhen a is n Is a negative value; when the inner end of the steel-pipe pile 3 is inclined outwardly with respect to the vertical axis, a n Positive values. In the embodiment shown in FIG. 3, a n Is sequentially 5 degrees, 10 degrees, 15 degrees, 20 degrees and 25 degrees. In the embodiment shown in FIG. 4, b n Is sequentially 5 degrees, 10 degrees, 15 degrees, 20 degrees and 25 degrees. In addition, as shown in fig. 5, the row spacing of the outer ends of the two adjacent rows of steel pipe piles 3 in the present invention is equal; the steel pipe piles 3 in each row are uniformly arranged at intervals along the length direction of the side slope 1, and the steel pipe piles 3 in two adjacent rows are arranged in a staggered mode.
In order to further improve the structural stability, as shown in fig. 6 and 7, each steel pipe pile 3 is provided with a plurality of grouting holes 4 in the side wall of the steel pipe, the grouting holes 4 uniformly spaced along the length direction of the steel pipe pile 3 are arranged in a row, and the grouting holes 4 are uniformly spaced along the circumferential direction of the steel pipe pile 3 in a plurality of rows; the grouting holes 4 of two adjacent rows are arranged in a staggered way. Each steel pipe pile 3 is fixedly provided with an anchor bar bundle 5 in the steel pipe, and the anchor bar bundles 5 are arranged along the length direction of the steel pipe pile 3. For convenient processing, the anchor bar bundle 5 is formed by welding a plurality of steel bars; for convenient implementation, have better structural stability simultaneously, the axis position of locating the steel pipe is fixed through the connecting piece to anchor muscle bundle 5. In this embodiment, the grouting holes 4 are arranged in four rows at regular intervals along the circumferential direction of the steel pipe pile 3, and the anchor bar bundle 5 is formed by welding three steel bars having an outer diameter of 32 mm.
In order to reduce the disturbance to the slag piling body 2, the steel pipe pile 3 preferably adopts a micro pile with the pile diameter less than 400mm and the slenderness ratio more than 30. In the field, the pile diameter refers to the outer diameter of a steel pipe, and the slenderness ratio refers to the ratio of the length of the steel pipe to the outer diameter of the steel pipe. In this example, a steel pipe having an outer diameter of 146mm and a wall thickness of 4.5mm was used as the steel pipe pile 3, and M20 mortar was used as the grout used for grouting. When the method is implemented, a drilling machine is used for drilling a hole to a certain depth of a rock layer in the side slope 1, then the steel pipe and the anchor bar bundle 5 are inserted, finally mortar with certain pressure is adopted for grouting the steel pipe, and the slag heap 2 and the corresponding rock and soil mass in the side slope 1 are consolidated.
The traditional pile arrangement distance is 0.75m or 0.5m, the row distance of the steel pipe piles 3 at the outer ends of the steel pipe piles can be reduced to 0.2m, and the construction platforms 6 required when the steel pipe piles 3 are constructed are greatly reduced; meanwhile, the consolidation grouting range of the corresponding rock and soil mass of the slag heaping body 2 and the slope 1 is greatly increased, and the area for consolidating the rock and soil mass in the dangerous slip arc is obviously larger, so that the stability of the slag heaping body 2 and the slope 1 is improved.
Claims (8)
1. The utility model provides a consolidate miniature pile supporting arrangement structure of heap sediment body side slope, including side slope (1), heap sediment body (2) and steel-pipe pile (3), heap sediment body (2) are located on the domatic of side slope (1), the top surface or the side of heap sediment body (2) are provided with a plurality of steel-pipe pile (3), the inner of steel-pipe pile (3) stretches into in side slope (1), the outer end of steel-pipe pile (3) stretches out from the top surface or the side of heap sediment body (2), a plurality of steel-pipe pile (3) that set up along side slope (1) length direction interval are one row, steel-pipe pile (3) are provided with the multirow, its characterized in that: the row spacing of the inner ends of the two adjacent rows of the steel pipe piles (3) is set as a spacing A, the row spacing of the outer ends of the two adjacent rows of the steel pipe piles (3) is set as a spacing B, and the spacing A is larger than the spacing B.
2. A micropile support arrangement for reinforcing a slope of a heap of slag as claimed in claim 1, in which:
when the outer end of the steel pipe pile (3) extends out of the top surface of the slag body (2), the angle value of the included angle of the axis of the nth row of steel pipe piles (3) relative to the vertical direction is set as a n Formed array of numbers { a n The arithmetic is an arithmetic progression;
when the outer end of the steel pipe pile (3) extends out of the side surface of the slag body (2), the angle value of the included angle of the axis of the steel pipe pile (3) in the n-th row relative to the horizontal direction is set as b n Array of numbers formed { b } n And the arithmetic is an arithmetic progression.
3. A micropile support arrangement for reinforcing a slope of a heap of slag as claimed in claim 2, in which: the row spacing of the outer ends of the two adjacent rows of the steel pipe piles (3) is equal.
4. A micro-pile support arrangement for reinforcing a slope of a slag pile body as claimed in any one of claims 1 to 3, wherein: the steel pipe piles (3) in each row are uniformly arranged at intervals along the length direction of the side slope (1), and the steel pipe piles (3) in two adjacent rows are arranged in a staggered mode.
5. A micro-pile support arrangement for reinforcing a slope of a slag pile body as claimed in any one of claims 1 to 3, wherein: a plurality of grouting holes (4) are formed in the side wall of a steel pipe of each steel pipe pile (3), the grouting holes (4) are uniformly arranged in a row at intervals along the length direction of the steel pipe pile (3), and the grouting holes (4) are uniformly arranged in a plurality of rows at intervals along the circumferential direction of the steel pipe pile (3); the grouting holes (4) of two adjacent rows are arranged in a staggered manner.
6. A micro-pile support arrangement for reinforcing a slope of a slag pile body as claimed in any one of claims 1 to 3, wherein: each steel pipe pile (3) is fixedly provided with anchor bar bundles (5) in the steel pipe, and the anchor bar bundles (5) are arranged along the length direction of the steel pipe pile (3).
7. A micropile support arrangement for reinforcing a slope of a heap of slag as claimed in claim 6, in which: the anchor bar bundle (5) is formed by welding a plurality of steel bars; the anchor bar bundle (5) is fixedly arranged at the position of the central axis of the steel pipe through a connecting piece.
8. A micropile support arrangement for reinforcing a slope of a slag heap as claimed in any one of claims 1 to 3, wherein: the steel pipe pile (3) is a miniature pile with the pile diameter smaller than 400mm and the slenderness ratio larger than 30; the pile diameter refers to the outer diameter of the steel pipe, and the slenderness ratio refers to the ratio of the length of the steel pipe to the outer diameter of the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221341863.1U CN217378957U (en) | 2022-05-31 | 2022-05-31 | Miniature pile supporting arrangement structure for reinforcing slag pile body side slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221341863.1U CN217378957U (en) | 2022-05-31 | 2022-05-31 | Miniature pile supporting arrangement structure for reinforcing slag pile body side slope |
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| Publication Number | Publication Date |
|---|---|
| CN217378957U true CN217378957U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221341863.1U Active CN217378957U (en) | 2022-05-31 | 2022-05-31 | Miniature pile supporting arrangement structure for reinforcing slag pile body side slope |
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| Country | Link |
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| CN (1) | CN217378957U (en) |
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2022
- 2022-05-31 CN CN202221341863.1U patent/CN217378957U/en active Active
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