CN216515662U - Be applied to foundation ditch support's assembled slope protection structure - Google Patents
Be applied to foundation ditch support's assembled slope protection structure Download PDFInfo
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- CN216515662U CN216515662U CN202122941255.6U CN202122941255U CN216515662U CN 216515662 U CN216515662 U CN 216515662U CN 202122941255 U CN202122941255 U CN 202122941255U CN 216515662 U CN216515662 U CN 216515662U
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Abstract
An assembled slope protection structure applied to foundation pit support, which comprises a side slope, soil nail reinforcing steel bars and an assembled surface layer, at least one drill hole is arranged on the side slope, soil nailing steel bars are penetrated through the drill holes of the side slope and are fixed on the outer surface of the side slope by grouting, the assembled surface layer is covered on the outer surface of the side slope, the assembled surface layer is provided with flanges at the positions where the top and the foot of the slope are covered, the soil nailing steel bars are provided with anchoring points at the longitudinal and transverse positions of the side slope, the slope protection layer surface of the utility model adopts the assembled surface layer, the steel bars and the sprayed concrete are not required to be laid, has little influence on the environment and the health of constructors, is not easily influenced by the weather during construction, reduces the washing of the exposed side slope by rainwater, does not need maintenance, and the assembled side slope surface layer can be industrially prefabricated in a factory, has high quality controllability, can adopt degradable materials and has no pollution to the environment.
Description
Technical Field
The utility model relates to the technical field of foundation pit side slope support construction, in particular to an assembled slope protection structure applied to foundation pit support, which is applied to building foundation pit support engineering and has the advantages of stability, reliability and environmental protection on a side slope.
Background
With the development of the economic society of China, the field of building deep foundation pit slope protection is quite concerned by people. At present, in the construction foundation pit supporting engineering, in order to protect the safety of the surrounding environment of the foundation pit and carry out foundation pit supporting in case of water and soil loss, the common method is to lay a steel bar net and spray concrete on the pit wall, during the actual operation, the risk of pipe explosion of a concrete conveying pipe exists, the atmospheric pollution is easily caused, the waste of manpower and material resources is caused, and the slurry, waste gas, dust and noise generated by hanging a net and spraying a concrete slope surface seriously pollute the environment and influence the health of constructors; during construction, the slope needs to be dry, the construction is easy to erode in rainy days, the quality is poor, the influence of weather is great, the erosion of rainwater to the bare slope cannot be reduced, the construction period is slow, the construction cost is high, the environment is polluted, and the like.
Therefore, it is highly desirable to provide a slope protection structure applied to foundation pit support, which can replace the conventional support form of spraying concrete on the mesh reinforcement, can avoid pipe burst and environmental pollution of concrete delivery pipes, and has good engineering quality and characteristics.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a method for constructing an assembled slope protection structure, which can shorten a construction period and save capital, and has the advantages of no pollution of used materials, low energy consumption, recycling, shortened construction period, low cost, resource saving, environmental protection, pollution reduction, etc., and has no generation of slurry, waste gas, dust, noise, and little influence on environment and health of constructors, and the construction of the assembled slope protection structure is not influenced by weather, and can reduce the erosion of rainwater on an exposed slope.
The utility model solves the technical problems through the following technical scheme:
an assembled slope protection structure applied to foundation pit support comprises a foundation pit and an assembled slope protection structure, wherein the assembled slope protection structure is arranged on the periphery of the foundation pit and comprises a side slope, soil nail reinforcing steel bars and an assembled surface layer, and at least one drill hole is formed in the side slope;
the soil nailing reinforcing steel bars penetrate through the drilled holes of the side slope and are fixed on the outer surface of the side slope through grouting, and the soil nailing reinforcing steel bars are exposed on the surface of the drilled holes;
the assembled surface layer covers the outer surface of the side slope and penetrates through the exposed position of the soil nailing reinforcing steel bar;
the side slope comprises a slope top, a middle slope and a slope foot, the middle slope is arranged between the slope top and the slope foot, one side of the middle slope is butted with the slope top, and the other side of the middle slope is butted with the slope foot;
the assembled surface layer is provided with flanges at the positions where the assembled surface layer covers the slope top and the slope toe;
and the longitudinal and transverse parts of the side slope are provided with anchoring points, and vertical anchors are bound on the anchoring points so as to realize the fixation of the vertical anchors to the turned-over edges.
As a further improvement to the above technical solution, the assembled slope protection structure includes a first steel wire rope and a fastening component, the first steel wire rope is wound around and tightened around the end of the soil nailing reinforcing bar, and the fastening component is installed at the end of the soil nailing reinforcing bar so as to fix the soil nailing reinforcing bar.
As a further improvement aiming at the technical scheme, the fastening assembly comprises a buckle sleeve and a buckle bolt, the buckle sleeve is sleeved at the end of the soil nailing steel bar, and the buckle bolt is used for screwing the buckle sleeve sleeved on the soil nailing steel bar so as to fix the soil nailing steel bar by the fastening assembly.
As a further improvement to the above technical solution, the assembled slope protection structure includes a second steel wire rope, and the second steel wire rope is bound to the vertical anchor to strengthen the fixation of the flange, thereby improving the overall stability of the slope.
As a further improvement to the above technical solution, the assembled slope protection structure includes a positioning bracket installed around the soil nailing reinforcing bars to ensure that the soil nailing reinforcing bars are accurately inserted into the center of the drilled holes.
As the further improvement to above-mentioned technical scheme, the assembled surface course includes a plurality of layers of bank protection surface course, and each layer of bank protection surface course from top to bottom overlaps in proper order and forms the assembled surface course, the overlap joint department of bank protection surface course adopts "it" style of calligraphy structure overlap joint, the bank protection surface course penetrates the soil nail reinforcing bar from top to bottom in proper order and exposes the surface of drilling.
As a further improvement to the above technical solution, a drain hole is formed in the fabricated surface layer, the diameter of the drain hole is 50mm, a PVC drain pipe with a diameter of Φ 50mm is fixed to the drain hole, a gasket is arranged at a fixing position of the drain hole and the PVC drain pipe, and the gasket is fixed to the drain hole by grouting to prevent water seepage from the drain hole.
As a further improvement aiming at the technical scheme, drainage ditches are arranged on the slope top and the slope toe, cement mortar plastering surfaces are bricked on the drainage ditches and form waterproof layers, so that the influence of rainwater on the side slope is avoided.
As a further improvement aiming at the technical scheme, the reinforcement body of the soil nailing reinforcing steel bar adopts a phi 16 thread reinforcing steel bar.
As a further improvement aiming at the technical scheme, the top and the foot of the slope are covered with a layer of C20 concrete with the thickness of 80mm so as to realize edge pressing of turned edges.
Compared with the prior art, the technical scheme of the utility model at least has the following beneficial effects:
(1) the assembled slope protection structure comprises a side slope, soil nail reinforcing steel bars and an assembled surface layer, wherein at least one drill hole is formed in the side slope; the soil nailing reinforcing steel bar passes through the drill hole of the side slope and is fixed on the outer surface of the side slope by grouting, the assembled surface layer covers the outer surface of the side slope, the assembled surface layer is provided with flanges at the covering parts of the top and the foot of the slope, and the soil nailing reinforcing steel bar is provided with anchoring points at the longitudinal and transverse parts of the side slope. The assembled slope protection structure can achieve the effects of shortening the construction period, improving the construction quality and reducing the environmental pollution.
(2) The soil nailing reinforcing steel bar fixing device is provided with the first steel wire rope, the buckle external member and the buckle bolt, the first steel wire rope is wound on the end head of the soil nailing reinforcing steel bar and tensioned, the buckle external member is sleeved on the end head of the soil nailing reinforcing steel bar, and the buckle external member sleeved on the soil nailing reinforcing steel bar is screwed through the buckle bolt, so that the soil nailing reinforcing steel bar is fixed, and the integral reinforcement of a side slope is greatly improved.
(3) The assembled surface layer is provided with a water outlet, a PVC drain pipe with the diameter phi of 50mm is fixed on the water outlet, and a gasket is arranged at the fixing position of the water outlet and the PVC drain pipe to prevent the water leakage of the water outlet.
(4) According to the utility model, the drainage ditches are arranged on the top and the foot of the slope, and cement mortar plastering surfaces are bricked on the drainage ditches, so that a waterproof layer is formed, the erosion of rainwater on the exposed side slope can be reduced, and the influence of the rainwater on the side slope is avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.
Drawings
FIG. 1 is an elevational view of an assembled face layer of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic elevation view of the hill top flange of the present invention;
FIG. 4 is a schematic elevational view of the toe cuff of the present invention;
FIG. 5 is a schematic view of the vertical anchor tie of the present invention;
FIG. 6 is a schematic view of the soil nailing reinforcing bars of the present invention passing through the fabricated facings;
FIG. 7 is a schematic structural view of the fastening assembly of the present invention;
FIG. 8 is a schematic elevation view of the slope protection surface support of the present invention;
fig. 9 is a detailed view of the revetment mat overlap of the present invention;
fig. 10 is a schematic view of a weep hole of the present invention.
In the figure: assembled surface course 1, slope protection surface course 11, tie wire 12, "zigzag structure 13, C20 concrete 14, vertical anchor 2, second wire rope 3, side slope 4, slope top 41, middle slope 42, toe 43, turn-ups 44, soil nail reinforcing bar 5, end 51, first wire rope 6, fastening components 7, buckle external member 71, buckle bolt 72, locating support 8, PVC drain pipe 9, outlet 91, escape canal 10, C20 concrete 14.
Detailed Description
Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which form a part of this specification, and which illustrate, by way of example, the principles of the utility model. In the referenced drawings, the same or similar components in different drawings are denoted by the same reference numerals.
As shown in fig. 1 to 5, an assembled slope protection structure applied to foundation pit support according to an embodiment of the present invention includes a foundation pit and an assembled slope protection structure, the assembled slope protection structure is disposed at a periphery of the foundation pit, wherein, the assembled slope protection structure comprises a side slope 4, soil nailing reinforcing steel bars 5 and an assembled surface layer 1, at least one drilling hole is arranged on the side slope 4, the soil nailing reinforcing steel bars 5 pass through the drilling holes of the side slope 4 and are fixed on the outer surface of the side slope 4 by grouting, the soil nailing reinforcing steel bars 5 are exposed on the surface of the drilling holes, the assembled surface layer 1 covers the outer surface of the side slope 4 and passes through the exposed position of the soil nailing reinforcing steel bars 5, the side slope 4 comprises a top 41, a middle slope 42 and a bottom 43, the middle slope 42 is arranged between the top 41 and the bottom 43, one side of the middle slope 42 is butted with the top 41, the other side of the assembled surface layer 1 is butted with a slope toe 43, and turnups 44 are arranged at the positions where the assembled surface layer 1 covers the slope top 41 and the slope toe 43; when the assembled slope protection structure comprises a second steel wire rope 3, the second steel wire rope 3 is bound on the vertical anchor 2, the soil nail steel bar 5 is the anchor point arranged at the position 1.5mx1.5m away from the longitudinal direction and the transverse direction of the slope 4, the phi 6 steel wire rope and the exposed 50-80 mm soil nail steel bar 5 are used for anchoring and binding, and the vertical anchor 2 bound on the anchor point is anchored by adopting the phi 16 thread steel bar with the length of 1.0 m. The assembled surface layer 1 adopted by the slope protection layer surface of the utility model does not need to lay steel bars and spray concrete, avoids the risk of pipe explosion of concrete conveying pipes, reduces secondary generation of dust, does not generate mud, waste gas, dust and noise, has little influence on the environment and the health of constructors, is not easily influenced by the weather during construction, reduces the erosion of the exposed side slope 4 caused by rainwater, does not need maintenance on the side slope 4, and the surface layer of the assembled side slope 4 can be prefabricated in the factory in an industrialized way, the quality controllability is high, degradable materials can be adopted, the utility model has no pollution to the environment, the vertical anchor bolts 2 are tied on the anchoring points, the turnup 44 is fixed through the vertical anchor bolts 2, therefore, the side slope 4 is reinforced, the stability of the side slope 4 is improved, and the assembled slope protection structure can achieve the effects of shortening the construction period, improving the construction quality and reducing the environmental pollution.
In the embodiment of the utility model, before installing the covering assembled surface layer 1, because some slope surfaces are loose and uneven, loose floating soil must be cleaned, the smooth slope surfaces are well treated, obstacles are removed, local unstable positions of the slope surfaces are cleaned or supported for reinforcement, and the slope surfaces are kept in smooth transition, the diameter of a drilled hole of the soil nailing steel bar 5 is 70mm, the bar body of the soil nailing steel bar 5 adopts a screw bar with the length of 2m, the end 51 of the soil nailing steel bar 5 is exposed at 100-150 mm outside the slope surface, the arrangement is convenient for welding the end 51 of the soil nailing steel bar 5 with a transverse reinforcing steel bar, in addition, the soil nailing steel bar 5 is selected to be flat, rust-free and oil-free, the soil nailing steel bar 5 is required to be subjected to hole cleaning inspection before being inserted into the drilled hole, when local water seepage, holes or falling and soil loosening occur in the drilled hole, the utility model is required to be immediately treated, the utility model carries out hole drilling by a down-hole drilling machine, the aperture is 70mm, and the inclination of the drill hole is vertical to the slope surface; the soil nail reinforcing steel bars 5 need to be fixed at the drill holes through grouting, cement paste is adopted for grouting, the water cement ratio is preferably 0.4-0.45, the cement paste is uniformly mixed and used along with stirring, before grouting, slurry or loose soil in the drill holes is removed firstly, bottom primary grouting is adopted, the grouting pressure is 0.4MPa, the assembly type surface layer 1 is adopted as the surface layer of the slope protection surface layer 11, surface layer concrete is not needed, during grouting, a grouting pipe needs to be inserted to a position 200mm away from the bottoms of the drill holes, in addition, the filling coefficient of the slurry injected into the drill holes needs to be larger than 1.0, foreign soil remained or loosened in the drill holes is removed completely before grouting, and when grouting is started or stopped for more than 30min, the citrus grouting pump and pipelines thereof need to be moistened by water or cement paste.
As shown in fig. 6-7, the assembled slope protection structure includes a first steel wire rope 6 and a fastening assembly 7, the first steel wire rope 6 is wound around and tightened around the end 51 of the soil nailing reinforcing bar 5, and is installed at the end 51 of the soil nailing reinforcing bar 5 through the fastening assembly 7, wherein the fastening assembly 7 includes a buckle sleeve 71 and a buckle bolt 72, the buckle sleeve 71 is sleeved on the end 51 of the soil nailing reinforcing bar 5, and the buckle sleeve 71 sleeved on the soil nailing reinforcing bar 5 is tightened by the buckle bolt 72 so as to be immovable, thereby fixing the soil nailing reinforcing bar 5 and greatly improving the integral reinforcement of the slope 4, and the first steel wire rope 6 is a 6 phi steel wire rope; this assembled slope protection structure still is provided with locating support 8, before soil nail reinforcing bar 5 puts into the drilling, will install centering locating support 8 on soil nail reinforcing bar 5 earlier, the design is in the hole site central point that the soil nail reinforcing bar 5 is in the drilling for guaranteeing like this, and its protective layer thickness is not less than 25mm after the slip casting, locating support 8 adopts phi 8's reinforcing bar preparation to form, and this locating support 8 becomes 30 degrees with soil nail reinforcing bar 5, install locating support 8 around soil nail reinforcing bar 5, in order to ensure that soil nail reinforcing bar 5 is placed in the middle in the hole.
As shown in fig. 8-9, in a first preferred embodiment of the present invention, the assembled surface layer 1 includes a plurality of slope protection surface layers 11, each of the slope protection surface layers 11 is overlapped from top to bottom to form the assembled surface layer 1, the overlapped part of the slope protection surface layers 11 is overlapped by a zigzag structure 13, the overlapping thickness is not less than 300mm, the width of the overlapped part is not less than 300mm, after the slope protection surface layers 11 are overlapped, the bundled wire 12 or the self-locking flat card is used for connecting, the distance between the connection points is not more than 500mm, the slope protection surface layers 11 are sequentially penetrated into the soil nailing steel bars 5 from top to bottom and exposed to the surface of the drilled hole, the assembled surface layer 1 of the present invention is reinforced by soil nailing steel bars 5 with phi 16 length of 2m, the soil nailing steel bars 5 are arranged on the assembled slope surface at a distance of 1.5mx1.5m, and the top 41 and the bottom of the slope are anchored by threaded steel bars with phi 16 length of 1.0 m. The assembled surface layer 1 is formed by compounding a skin layer, a performance component, a protective component and a reinforced component, wherein the skin layer is made of a reticular material woven and processed by fibers, can be closely attached to a soil body, and has waterproof layer performance according to needs; the performance part adopts a component with certain waterproof, flame retardant and other performances; the protective function part adopts a component capable of preventing soil particles from losing; the reinforcement function part adopts a polymer latticed component with certain tensile strength, and the requirement of bearing the slope soil pressure is met.
As shown in fig. 10, the assembled surface layer 1 of the present invention is provided with a water drain hole 91, wherein the water drain hole 91 has a diameter of 50mm, a PVC water drain pipe 9 having a diameter of Φ 50mm is fixed to the water drain hole 91, the water drain hole 91 is drilled by a drilling machine, and a gasket is provided at the fixing position of the water drain hole 91 and the PVC water drain pipe 9 to prevent water from leaking from the water drain hole 91.
According to the utility model, the drainage ditch 10 is arranged on the slope top 41 and the slope foot 43, the starting point section of the drainage ditch 10 is 500x500mm, cement mortar plastering is bricked on the drainage ditch 10 to form a waterproof layer, so that the erosion of rainwater on the exposed side slope 4 can be reduced, and the influence of the rainwater on the side slope 4 is avoided.
According to the utility model, the C20 concrete 14 with the thickness of 80mm is covered on the slope top 41 and the slope foot 43, the C20 concrete 14 can be used for pressing the turned edge 44, and the width of the turned edge 44 of the slope top 41 is not less than 0.8 m.
Compared with the prior art, the technical scheme disclosed by the embodiment has the following beneficial effects:
in the embodiment, the assembled slope protection structure can replace a supporting structure for spraying concrete on the reinforcing mesh sheets in the prior construction process, in addition, the assembled slope protection structure has good engineering quality and characteristics, can meet the actual requirements of engineering, can shorten the construction period and save funds, and the used materials have the advantages of no pollution, low energy consumption, recycling, quick construction period and low cost, have the function of saving resources, completely meet the relevant policies of the current country and respond to the requirements of green building development; in addition, the vertical anchor 2 is bound on the anchoring point, so that the vertical anchor 2 can fix the flanging 44.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a be applied to foundation ditch support's assembled slope protection structure, includes foundation ditch and assembled slope protection structure, the periphery of foundation ditch is located to assembled slope protection structure, its characterized in that: the assembled slope protection structure comprises a side slope, soil nail reinforcing steel bars and an assembled surface layer, wherein at least one drill hole is formed in the side slope;
the soil nailing reinforcing steel bars penetrate through the drilled holes of the side slope and are fixed on the outer surface of the side slope through grouting, and the soil nailing reinforcing steel bars are exposed on the surface of the drilled holes;
the assembled surface layer covers the outer surface of the side slope and penetrates through the exposed position of the soil nailing reinforcing steel bar;
the side slope comprises a slope top, a middle slope and a slope foot, the middle slope is arranged between the slope top and the slope foot, one side of the middle slope is butted with the slope top, and the other side of the middle slope is butted with the slope foot;
the assembled surface layer is provided with flanges at the positions where the assembled surface layer covers the slope top and the slope toe;
and the longitudinal and transverse parts of the side slope are provided with anchoring points, and vertical anchors are bound on the anchoring points so as to realize the fixation of the vertical anchors to the turned-over edges.
2. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: assembled slope protection structure includes first wire rope and fastening components, first wire rope winding is in on the end of soil nail reinforcing bar and taut, fastening components installs so that the realization is fixed to soil nail reinforcing bar on the end of soil nail reinforcing bar.
3. The fabricated slope protection structure applied to foundation pit support according to claim 2, wherein: the fastening assembly comprises a buckle external member and a buckle bolt, the buckle external member is sleeved on the end of the soil nailing steel bar, and the buckle bolt is screwed on the buckle external member sleeved on the soil nailing steel bar to fix the soil nailing steel bar.
4. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: the assembled slope protection structure comprises a second steel wire rope which is bound on the vertical anchor nails to strengthen the fixation of the turned edges, so that the overall stability of the side slope is improved.
5. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: assembled slope protection structure includes the locating support, the locating support is installed around the soil nail reinforcing bar in order to ensure that the soil nail reinforcing bar accurately inserts the center of drilling.
6. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: the assembled surface course includes a plurality of layers of bank protection surface course, and each layer of bank protection surface course from top to bottom overlaps and forms the assembled surface course in proper order, the overlap joint department of bank protection surface course adopts "it" style of calligraphy structure overlap joint, the bank protection surface course penetrates soil nail reinforcing bar and exposes the surface of drilling from top to bottom in proper order.
7. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: the assembled surface layer is provided with a water outlet, the diameter of the water outlet is 50mm, a PVC drain pipe with the diameter of phi 50mm is fixed on the water outlet, a gasket is arranged at the fixing position of the water outlet and the PVC drain pipe, and the gasket is fixed at the position of the water outlet in a grouting manner to prevent water leakage.
8. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: all be provided with the escape canal on top of a slope and the toe of a slope, the brick is built on the escape canal and is plastered the face and form the waterproof layer with cement mortar to avoid the influence of rainwater to the side slope.
9. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: the reinforcement body of the soil nailing reinforcing steel bar adopts a phi 16 thread reinforcing steel bar.
10. The fabricated slope protection structure applied to foundation pit support according to claim 1, wherein: and the top and the foot of the slope are covered with a layer of C20 concrete with the thickness of 80mm so as to realize edge pressing of turned edges.
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| CN202122941255.6U CN216515662U (en) | 2021-11-29 | 2021-11-29 | Be applied to foundation ditch support's assembled slope protection structure |
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| CN202122941255.6U CN216515662U (en) | 2021-11-29 | 2021-11-29 | Be applied to foundation ditch support's assembled slope protection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419077A (en) * | 2022-08-18 | 2022-12-02 | 中建三局集团有限公司 | Recoverable green assembled foundation pit supporting system and construction process thereof |
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2021
- 2021-11-29 CN CN202122941255.6U patent/CN216515662U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419077A (en) * | 2022-08-18 | 2022-12-02 | 中建三局集团有限公司 | Recoverable green assembled foundation pit supporting system and construction process thereof |
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