CN214497532U - Construction structure for treating local collapse or shallow layer slippage of foundation pit and side slope - Google Patents
Construction structure for treating local collapse or shallow layer slippage of foundation pit and side slope Download PDFInfo
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- CN214497532U CN214497532U CN202120149479.0U CN202120149479U CN214497532U CN 214497532 U CN214497532 U CN 214497532U CN 202120149479 U CN202120149479 U CN 202120149479U CN 214497532 U CN214497532 U CN 214497532U
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Abstract
The utility model provides a construction structures for handling foundation ditch and slope local collapse or shallow layer slides. The construction structure comprises a slope body of a foundation pit or a side slope, an original slope surface supporting structure of the slope body, a plurality of grouting floral tubes, a sand bag piled in a collapse cavity area of the original slope surface supporting structure, a reinforcing mesh paved on the slope surface side of the piled and filled sand bag and a concrete layer sprayed on a gap on the side of the sand bag adjacent to the reinforcing mesh and the surface of the reinforcing mesh; and each grouting floral tube is driven into the slope body and grouted before the sand bags are piled, and the outer end of each grouting floral tube is fixed with the reinforcing mesh. The utility model provides a general soil property especially old cohesive soil, loose fill area's foundation ditch (side slope) soil body part collapse or the shallow surface slides and forms the problem that deep cavity is difficult to handle, avoided taking place the top of a slope soil body and subsided, closed on the road of top of a slope or building thing fracture settlement scheduling incident to guaranteed foundation ditch (side slope) soil body part collapse especially deep cavity's reinforcement effect.
Description
Technical Field
The utility model relates to a geotechnical engineering field, concretely relates to a construction structures for handling that foundation ditch and slope part collapse or shallow layer slide.
Background
In the field of foundation pit and side slope support, the suspended net concrete spraying is a common support means and is commonly used for protection of common slope bodies. The common concrete structure with suspended net is shown in fig. 4 and 5, and has excellent supporting effect on the foundation pit or side slope of common soil by driving soil nails into the slope, fixing steel bar net sheets or steel plate nets and spraying concrete with certain thickness. However, on site, due to poor construction quality or management level (such as layered excavation and timely support according to design requirements), or due to erosion damage caused by heavy rain, heavy rain and the like, slope foot soil body collapse and slope shallow layer slippage often occur in old cohesive soil, filling soil and other areas, the steel bar mesh or steel plate mesh falls off seriously, and deep cavities are formed on slopes, so that roads and building structures close to the top of the slope generate large displacement or settlement, a large potential safety hazard is formed, large-area rework is caused, and delay of support construction period and increase of construction cost are caused.
Therefore, in order to ensure the construction safety after the local collapse and shallow layer slippage of the foundation pit and side slope soil body and the normal operation of roads and building structures close to the top of the slope, the collapsed or slippage soil body must be processed in time.
Disclosure of Invention
The utility model discloses problem to prior art exists, a construction structure for handling foundation ditch and slope local collapse or shallow layer slides is provided, old cohesive soil can be solved to this construction structure, the foundation ditch (slope) soil body local collapse or the shallow surface in loose fill area slides and forms the problem that deep cavity is difficult to handle, avoid taking place the top of a slope soil body and sink, the road that closes on the top of a slope or construction thing fracture accidents such as settlement, and can guarantee that foundation ditch (slope) soil body local collapse especially deep cavity's reinforcement effect, and this structural cost is lower, on-the-spot easy operation.
In order to solve the technical problem, the utility model provides a construction structures for handling foundation ditch and side slope local collapse or shallow layer slides, including the original domatic supporting construction of the slope body of foundation ditch or side slope and the slope body, its characterized in that: the construction structure further comprises a plurality of grouting floral tubes which are driven into the slope, sand bags which are filled in the collapse cavity area of the original slope surface supporting structure, reinforcing mesh sheets which are laid on the slope surface sides of the filled sand bags, and concrete layers which are sprayed on the side gaps of the sand bags, which are adjacent to the reinforcing mesh sheets, and the surfaces of the reinforcing mesh sheets; the grouting floral tubes and the reinforcing mesh sheets are distributed in an original slope surface supporting structure collapse sliding area and the range of 1-4 m of the periphery of the collapse sliding area, each grouting floral tube is driven into a slope body and grouted before sand bags are piled, and the outer end of each grouting floral tube is fixed with the reinforcing mesh sheet.
The utility model discloses further technical scheme: the top surface of the slope body is provided with a slope top drainage ditch, and the slope bottom is provided with a slope bottom drainage ditch.
The utility model discloses better technical scheme: the sand bags are staggered and stacked in a laminating mode, the collapse cavity area of the original slope supporting structure is filled and compacted, and the pack back pressure is formed on the collapse face.
The utility model discloses better technical scheme: the grouting perforated pipe is 3-6 m long, 40-60 mm in diameter and 2.5-3.5 mm in wall thickness, is distributed in a quincunx shape, and is 1.2-2 m in horizontal and vertical distribution intervals; the angle of each grouting perforated pipe driven into the slope body is 15-25 degrees, and the outer end of each grouting perforated pipe is welded with the reinforcing mesh.
The utility model discloses better technical scheme: the reinforcing mesh adopts
10mm HPB300 steel bars are manufactured, the space between the two steel bars is 200mm multiplied by 200mm, and the steel bar net sheets are installed after being installed with net hanging soil nailsAnd (5) hanging net soil nails.
The utility model discloses better technical scheme: the concrete layer is made of C20 concrete, and the thickness of the concrete layer is not less than 100 mm.
The utility model utilizes the sand bag to backfill and compact the cavity area formed by foundation pit (side slope) slope collapse, and forms pack back pressure on the empty face of the collapse; and a grouting pipe is driven into a collapse sliding area of a slope body before sand bag filling, grouting is carried out, the grouting pipe is used for reinforcing an undisrupted soil body and installing and fixing a reinforcing mesh, then the reinforcing mesh is laid on the outer surface of the sand bag filling area, the reinforcing mesh is welded and fixed with the end part of the grouting floral tube, concrete with a certain thickness is sprayed to a gap outside a sand bag and the reinforcing mesh, the concrete reaches the design strength after curing, and finally backfilling and reinforcing of a foundation pit (side slope) collapse area are completed.
The utility model discloses a sand bag backfills the hole that collapses of compaction foundation ditch (side slope) slope interior deep portion, the method of slip casting floral tube is beaten in the combination slope, domatic string reinforcing bar net piece injection concrete mask, the problem that general soil property especially old cohesive soil, the foundation ditch (side slope) soil body part in loose fill area collapses or the superficial slides and form deep portion cavity and be difficult to handle has been solved, the emergence top of slope soil body sinks, the road or the building thing fracture of closing on the top of slope and subsides incident such as, and guaranteed foundation ditch (side slope) soil body part collapse especially deep hollow reinforcement effect, and this structure cost is lower, on-the-spot easy operation, can realize promoting fast.
Drawings
FIG. 1 is a schematic structural section of the present invention;
FIG. 2 is a schematic view of the structure of the present invention;
FIG. 3 is a large sample drawing of the grouting floral tube of the utility model
FIG. 4 is a schematic view of the original supporting structure of the foundation pit (side slope);
fig. 5 is a big picture of the original slope supporting structure of the utility model.
In the figure: 1-slope body, 2-original slope surface supporting structure, 3-slope top drainage ditch, 4-slope bottom drainage ditch, 5-concrete layer, 6-reinforcing mesh sheet, 600-hanging net soil nail, 7-grouting floral tube and 8-sand bag.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 3 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The embodiment provides a construction structure for treating local collapse or shallow layer slippage of a foundation pit and a side slope, as shown in figure 1, the construction structure comprises a slope body 1 of the foundation pit or the side slope and an original slope surface supporting structure 2 of the slope body, wherein a slope top drainage ditch 3 is arranged on the top surface of the slope body 1, a slope bottom drainage ditch 4 is arranged at the slope bottom, and a hole area formed due to collapse is arranged in the original slope surface supporting structure 2; the construction structure further comprises a plurality of grouting floral tubes 7 which are driven into the slope body 1, sand bags 8 which are filled in the collapse cavity area of the original slope surface supporting structure 2, reinforcing mesh sheets 6 which are paved on the slope surface side of the filling sand bags 8, and concrete layers 5 which are sprayed on the gaps on the side, close to the reinforcing mesh sheets 6, of the sand bags 8 and on the surfaces of the reinforcing mesh sheets 6. The sand bags 8 are staggered and stacked in a laminating mode, the collapse cavity area of the original slope surface supporting structure 2 is filled and compacted, and the pack back pressure is formed on the collapse face; the grouting floral tubes 7 and the reinforcing mesh sheets 6 are distributed in the collapse sliding area of the original slope surface supporting structure 2 and the range of 1-4 m of the periphery of the collapse sliding area, each grouting floral tube 7 is driven into the slope body 1 and grouted before the sand bags 8 are piled, and the outer end of each grouting floral tube 7 is fixed with the reinforcing mesh sheets 6.
The structure of slip casting perforated pipe 7 in the embodiment is as shown in fig. 3, the tip is arranged to be the most advanced end, and a plurality of slip casting holes are arranged on the surface of the perforated pipe, the length of the slip casting perforated pipe is 3-6 m, the diameter of the slip casting perforated pipe is 48mm, the wall thickness of the slip casting perforated pipe is 3mm, the slip casting perforated pipe is distributed in a quincunx shape, the vertical interval is 1.5m, the horizontal interval is 1.5m, the angle of each slip casting perforated pipe 7 driven into a slope body is 20 degrees, and the outer end of the slip casting perforated pipe is welded with a reinforcing mesh 6. The reinforcing mesh 6 adopts
10mm HPB300 steel bars are made, and the distance is 200mm multiplied by 200 mm. The concrete layer 5 is made of C20 concrete, and the thickness is not less than 100 mm.
The construction process of the present invention will be further explained with reference to the following embodiments, in which the original slope surface supporting structure 2 is, as shown in fig. 5, driven into the slope body 1 by the net hanging soil nails 600, the reinforcing mesh sheets 6 are fixed, and concrete of a certain thickness is sprayed; the original slope supporting structure 2 of the slope body 1 is subjected to construction quality or management level difference (if layered excavation and timely supporting are not carried out according to design requirements), or is damaged by scouring of heavy rain, heavy rain and the like, slope foot soil body collapse and slope shallow layer slippage phenomena often occur in old cohesive soil, filling soil and other areas, and accordingly steel bar meshes fall off, and deep cavities are formed in the slope body. The utility model discloses a construction structure just drops to the reinforcing bar net piece that above-mentioned slope collapses and the side slope shallow layer slides and cause, and the slope forms deep cavity and handles, and concrete processing procedure is: before the sand bag 8 is backfilled, grouting floral tubes 7 are firstly driven into a soil body collapse area, a side slope shallow layer sliding area and the periphery of the side slope shallow layer sliding area, the grouting floral tubes 7 are distributed in a quincunx shape, the vertical distance is 1.5m, the horizontal distance is 1.5m, and the angle of each grouting floral tube 7 driven into a slope body 1 is 20 degrees; and then filling sand bags 8 in the collapse hollow area, stacking the sand bags 8 in a staggered joint manner in a laminating manner, cleaning the base before stacking the sand bags, flattening the base, filling and compacting the collapse hollow area of the original slope supporting structure 2, forming pack back pressure on the collapse empty surface, paving a reinforcing mesh 6 on the surface of the filled sand bags 8, welding the reinforcing mesh 6 with a grouting perforated pipe 7, spraying concrete with a certain thickness on the outer side of the sand bags 8 and the reinforcing mesh 6, curing the concrete to reach the designed strength, and finally completing backfilling and reinforcing of the collapse area of the foundation pit (side slope).
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 (6)
1. The utility model provides a construction structures for handling foundation ditch and side slope local collapse or shallow layer slides, includes original domatic supporting construction (2) of slope body (1) and the slope body of foundation ditch or side slope, its characterized in that: the construction structure further comprises a plurality of grouting floral tubes (7) driven into the slope body (1), sand bags (8) filled in the collapse cavity area of the original slope surface supporting structure (2), reinforcing steel bar meshes (6) paved on the slope surface side of the filling sand bags (8), and concrete layers (5) sprayed on the side gaps of the sand bags (8) adjacent to the reinforcing steel bar meshes (6) and the surfaces of the reinforcing steel bar meshes (6); the grouting floral tubes (7) and the reinforcing mesh sheets (6) are distributed in the collapse sliding area of the original slope surface supporting structure (2) and the range of 1-4 m of the periphery of the collapse sliding area, each grouting floral tube (7) is driven into the slope body (1) before the sand bags (8) are filled, grouting is carried out, and the outer end of each grouting floral tube (7) is fixed with the reinforcing mesh sheet (6).
2. The construction structure for treating the local collapse or shallow slippage of the foundation pit and the side slope according to claim 1, wherein: a slope top drainage ditch (3) is arranged on the top surface of the slope body (1), and a slope bottom drainage ditch (4) is arranged on the slope bottom.
3. The construction structure for treating local collapse or shallow slippage of foundation pits and side slopes according to claim 1 or 2, wherein: the sand bags (8) are staggered and stacked in a laminating mode, the collapse cavity area of the original slope supporting structure (2) is filled and compacted, and the pack back pressure is formed on the collapse empty surface.
4. The construction structure for treating local collapse or shallow slippage of foundation pits and side slopes according to claim 1 or 2, wherein: the grouting perforated pipe (7) is 3-6 m long, 40-60 mm in diameter, 2.5-3.5 mm in wall thickness, distributed in a quincunx shape, and 1.2-2 m in horizontal and vertical distribution intervals; the angle of each grouting perforated pipe (7) driven into the slope body (1) is 15-25 degrees, and the outer end of each grouting perforated pipe is welded with the reinforcing mesh (6).
5. The construction structure for treating local collapse or shallow slippage of foundation pits and side slopes according to claim 1 or 2, wherein: the reinforcing mesh (6) adopts
And (5) manufacturing reinforcing steel bars, wherein the distance is 200mm multiplied by 200 mm.
6. The construction structure for treating local collapse or shallow slippage of foundation pits and side slopes according to claim 1 or 2, wherein: the concrete layer (5) is made of C20 concrete, and the thickness is not less than 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120149479.0U CN214497532U (en) | 2021-01-20 | 2021-01-20 | Construction structure for treating local collapse or shallow layer slippage of foundation pit and side slope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120149479.0U CN214497532U (en) | 2021-01-20 | 2021-01-20 | Construction structure for treating local collapse or shallow layer slippage of foundation pit and side slope |
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| CN214497532U true CN214497532U (en) | 2021-10-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897832A (en) * | 2021-11-22 | 2022-01-07 | 长沙理工大学 | Repairing structure and repairing method for water damage of geogrid reverse-wrapping embankment |
| CN114960551A (en) * | 2022-05-27 | 2022-08-30 | 武汉一冶建筑安装工程有限责任公司 | Method for treating superficial landslide of local bank slope |
| CN115434344A (en) * | 2022-10-12 | 2022-12-06 | 中建八局西南建设工程有限公司 | Reinforcing construction device and construction method for collapse or slippage part of foundation pit slope |
-
2021
- 2021-01-20 CN CN202120149479.0U patent/CN214497532U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897832A (en) * | 2021-11-22 | 2022-01-07 | 长沙理工大学 | Repairing structure and repairing method for water damage of geogrid reverse-wrapping embankment |
| CN114960551A (en) * | 2022-05-27 | 2022-08-30 | 武汉一冶建筑安装工程有限责任公司 | Method for treating superficial landslide of local bank slope |
| CN114960551B (en) * | 2022-05-27 | 2023-06-06 | 武汉一冶建筑安装工程有限责任公司 | Processing method for local bank slope to generate superficial landslide |
| CN115434344A (en) * | 2022-10-12 | 2022-12-06 | 中建八局西南建设工程有限公司 | Reinforcing construction device and construction method for collapse or slippage part of foundation pit slope |
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