CN212983829U - Miniature pile supporting construction suitable for soft base is handled - Google Patents
Miniature pile supporting construction suitable for soft base is handled Download PDFInfo
- Publication number
- CN212983829U CN212983829U CN202020943605.5U CN202020943605U CN212983829U CN 212983829 U CN212983829 U CN 212983829U CN 202020943605 U CN202020943605 U CN 202020943605U CN 212983829 U CN212983829 U CN 212983829U
- Authority
- CN
- China
- Prior art keywords
- micro
- pile
- pile group
- miniature
- concrete surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a miniature stake supporting construction suitable for soft base is handled belongs to the civil engineering field, the utility model discloses a miniature stake supporting construction suitable for soft base is handled, including miniature pile group and concrete surface course, concrete surface course is laid on miniature pile group to play the enhancement fixed action, miniature pile group buries underground in the soil layer, prevents that the soil layer from sliding for consolidating the earthwork. The utility model discloses a miniature pile supporting construction suitable for soft base is handled adopts the supporting construction that miniature pile group and concrete surface course combined together, makes the sloping ground through setting up this miniature pile supporting construction who is applicable to soft base and handles, can block the sloping ground infrabasal soil body and slide, guarantees the stability on sloping ground.
Description
Technical Field
The utility model relates to a civil engineering field especially relates to a miniature stake supporting construction suitable for soft base is handled.
Background
The common soil nailing wall is an in-situ soil body reinforcement technology. The slope of the foundation pit is reinforced by soil nails made of steel bars, a steel bar mesh is laid on the surface of the slope, and a layer of concrete surface layer is sprayed on the surface of the slope to combine with the soil slope. The construction of the supporting structure is a common supporting type, wherein the supporting structure is a composite body formed by firmly bonding a reinforced rod piece (namely a soil nail or an anchor rod) arranged in a slope body and a surrounding soil body, and is similar to a gravity retaining wall and is formed by a surface layer.
However, when the geological conditions are complex, for example, a silt layer of tens of meters is formed below a foundation pit, the lower silt layer slips due to the peripheral soil pressure in the excavation process of the foundation pit, the arranged reinforced rod piece may slip together with the silt layer, so that the stability of the side slope cannot be ensured, and if a building is formed around, great economic loss and safety accidents are caused once the side slope is unstable.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect of prior art, the utility model aims to solve the technical problem that a miniature pile supporting construction suitable for soft base is handled is proposed, adopts the supporting construction that miniature pile group and concrete surface course combined together, makes the sloping ground through setting up this miniature pile supporting construction who is applicable to soft base and handles, can block the sloping ground infrabasal soil body and slide, guarantees the stability on sloping ground.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a pair of miniature stake supporting construction suitable for soft base is handled, including miniature pile group and concrete surface course, the concrete surface course is laid on miniature pile group to play and strengthen the fixed action, miniature pile group buries underground in the soil layer, prevents that the soil layer from sliding for consolidating the earthwork.
The utility model discloses preferred technical scheme lies in, and the miniature stake supporting construction who is applicable to soft base and handles still includes the arrangement of reinforcement concrete panel, and one side of arrangement of reinforcement concrete panel links up with the tip of concrete surface course mutually, and the opposite side of arrangement of reinforcement concrete panel is buried underground in the soil layer to the miniature stake of cladding group.
The utility model discloses preferred technical scheme lies in, the miniature pile supporting construction who is applicable to soft base and handles still includes the stock, the one end and the concrete surface course fixed connection of stock, the other end of stock pass miniature pile group insert the soil layer in to play and strengthen the fixed action.
The utility model discloses preferred technical scheme lies in, and miniature pile group is formed by a plurality of single miniature stake evenly distributed and each other complex.
The utility model discloses preferred technical scheme lies in, the miniature stake supporting construction who is applicable to soft base and handles still includes the fastening reinforcing bar, and the arrangement of reinforcement concrete panel passes through fastening reinforcing bar and soil layer fastening connection.
The utility model discloses preferred technical scheme lies in, the part that miniature pile group exposes at the earth's surface is through laying the concrete surface course in order playing the reinforcing action, and all the other parts of miniature pile group are buried underground under the soil layer.
The utility model has the advantages that:
the utility model provides a miniature pile supporting construction suitable for soft base is handled sets up this miniature pile supporting construction through the sloping field to the excavation, can block the sloping field infrabasal soil body and slide, guarantees the stability on sloping field. The miniature pile group and the concrete surface layer jointly form a stable side slope composite supporting structure wall, so that the problems of slippage, collapse and the like of a side slope during earthwork excavation can be reduced, the earthwork excavation and backfilling engineering quantity is further reduced, the cost is reduced, the composite supporting structure wall reduces the flow of a soil layer with high flow plasticity, and the stability of the side slope under the complex geological condition can be better ensured. Through the structure, the micro pile supporting structure suitable for soft foundation treatment can prevent the sliding of the soil body on the lower layer of the sloping field and reduce the hidden dangers of displacement, collapse and the like of the sloping field caused by the sliding of the soil body on the lower layer, thereby ensuring the stability of the sloping field and preventing the sliding of the soil layer with poor geology when the foundation pit is excavated.
Drawings
Fig. 1 is a schematic structural diagram of a micro pile supporting structure suitable for soft foundation treatment provided in an embodiment of the present invention;
fig. 2 is a schematic view of a construction process of the micro support method suitable for soft foundation treatment according to the embodiment of the present invention.
In the figure:
1. a micro pile group; 11. a single micro pile; 2. a concrete facing; 3. reinforced concrete panels; 4. an anchor rod; 5. fastening the reinforcing steel bars; A. punching; B. a pipe punching step; C. grouting; D. a tube drawing step; E. and (5) clearing the pipes.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.
In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.
In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.
In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.
Example one
As shown in fig. 1, in the micro-pile support structure suitable for soft foundation treatment according to the first embodiment, in order to prevent the slip of the soil body of the lower layer of the sloping field and ensure the stability of the sloping field by installing the micro-pile support structure suitable for soft foundation treatment on the sloping field. Further, the micro pile supporting structure suitable for soft foundation treatment comprises a micro pile group 1 and a concrete surface layer 2, wherein the concrete surface layer 2 is laid on the micro pile group 1 to play a role in strengthening and fixing, and the micro pile group 1 is buried in a soil layer to strengthen earthwork and prevent the soil layer from sliding. Taking excavation of a foundation pit of a house building as an example, the geological environment of a project is complex, the first layer of the geological structure of the site is filled with miscellaneous soil, the thickness of the first layer of the geological structure is 2 meters, a sludge layer with the thickness of about 8 meters is arranged below the first layer of the geological structure, the excavation depth of the foundation pit is 6 meters, the large-range excavation cannot be realized due to limited site conditions, and buildings are arranged near the periphery of the foundation pit. By arranging the miniature pile supporting structure on the excavated sloping field, the sliding of the soil body on the lower layer of the sloping field can be blocked, and the stability of the sloping field is ensured. The miniature pile group 1 and the concrete surface layer 2 jointly form a stable side slope composite supporting structure wall, so that the problems of slippage, collapse and the like of a side slope during earthwork excavation can be reduced, the earthwork excavation and backfilling engineering quantity is further reduced, the cost is reduced, the composite supporting structure wall reduces the flow of a soil layer with high flow plasticity, and the stability of the side slope under complex geological conditions can be better ensured. Through the structure, the micro pile supporting structure suitable for soft foundation treatment can prevent the sliding of the soil body on the lower layer of the sloping field and reduce the hidden dangers of displacement, collapse and the like of the sloping field caused by the sliding of the soil body on the lower layer, thereby ensuring the stability of the sloping field and preventing the sliding of the soil layer with poor geology when the foundation pit is excavated.
Preferably, the micro-pile supporting structure suitable for soft foundation treatment further comprises a reinforced concrete panel 3, one side of the reinforced concrete panel 3 is connected with the end part of the concrete surface layer 2, and the other side of the reinforced concrete panel 3 is embedded in a soil layer to cover the micro-pile group 1. The reinforced concrete panel 3 is arranged to cover the micro pile group 1, so that the micro pile group 1 is prevented from being exposed on the ground surface to cause abrasion, and the stability of the sloping field is ensured.
Preferably, the micro pile supporting structure suitable for soft foundation treatment further comprises an anchor rod 4, one end of the anchor rod 4 is fixedly connected with the concrete surface layer 2, and the other end of the anchor rod 4 penetrates through the micro pile group 1 and is inserted into the soil layer to play a role in strengthening and fixing. During subsequent slope soil excavation, the anchor rods 4 can be excavated and driven simultaneously to form a stable slope composite supporting structure wall together with the micro pile group 1 and the concrete surface layer 2, so that the stability of the slope under complex geological conditions can be better ensured.
Preferably, the micropile assembly 1 is formed by a plurality of single micropiles 11 which are uniformly distributed and mutually compounded. A plurality of single micro-piles 11 are compounded and uniformly distributed, and the supporting strength of the sloping field is guaranteed.
Preferably, the micro-pile supporting structure suitable for soft foundation treatment further comprises fastening steel bars 5, and the reinforced concrete panel 3 is fixedly connected with the soil layer through the fastening steel bars 5. By arranging the fastening steel bars 5, the reinforced concrete panel 3 is more stably and firmly connected with the soil layer.
Preferably, the part of the micro pile group 1 exposed to the ground surface is reinforced by laying a concrete surface layer 2, and the rest part of the micro pile group 1 is buried under the soil layer. Through the structural layout, the micro pile group 1 and the concrete surface layer 2 jointly form a stable slope composite supporting structure wall, the flow of a soil layer with high flow plasticity can be reduced, and the stability of a slope under complex geological conditions can be better ensured.
Example two
In order to more clearly illustrate micro pile supporting structure suitable for soft base is handled, discuss below the utility model discloses a construction method for constructing micro pile supporting structure, as shown in fig. 1 and fig. 2, the micro supporting method suitable for soft base is handled for constructing micro pile supporting structure that provides in the embodiment two, including step A of punching, step B of managing, slip casting step C and tube drawing step D, the earthwork forms the stake hole after step A of punching, buries the steel pipe underground in the stake hole through step B of managing, follow the steel pipe whole body slip casting and fill up the stake hole after slip casting step C in the stake hole, pull out the slip casting pipe through step D of drawing, treat that the thick liquids in the stake hole solidify the back and form into micro pile group 1. In order to enable constructors to conveniently lay the micro pile group 1 by the micro supporting method suitable for soft foundation treatment, the construction process is safer and more reliable, and the stability of the construction sloping field is ensured. Further, taking excavation of a foundation pit of a house building as an example, the geological environment of a project is complex, the first layer of the geological structure of the site is filled with miscellaneous earth, the thickness of the first layer of the geological structure is 2 meters, a sludge layer with the thickness of about 8 meters is arranged below the first layer of the geological structure, the excavation depth of the foundation pit is 6 meters, the site condition is limited, large-scale excavation cannot be achieved, and buildings are arranged nearby the periphery of the foundation pit. In the drilling step A, the cement mixing pile machine drills holes through a spiral drill bit, and simultaneously performs grouting to a hole wall through a grouting pipe to form a grouting protection wall until a pile hole with design requirements is formed, the spiral drill bit is gradually lifted to finally evacuate from the pile hole, in the grouting step C, the cement mixing pile machine buries the grouting pipe along the whole body of a steel pipe, then concrete is laid along the whole body of the grouting pipe on the earth to form a concrete surface layer 2 for sealing the pile hole, the grouting pipe continuously performs grouting to the bottom of the pile hole through a communicated high-pressure grouting machine, the slurry continuously drives away the soil after the pile hole is filled with the slurry, and the grouting is stopped when the flowing slurry has no soil impurities and is cement-free. In the punching step A, a protective wall for preventing the collapse and blockage of the pore channel can be formed on the pore wall of the pile hole in a mode of drilling and grouting at the same time, so that the construction process of the miniature pile is safer and more reliable. In the grouting step C, a concrete surface layer 2 is laid before secondary grouting, so that the whole reinforcing and sealing effect can be achieved on the part of the micro pile group 1 exposed on the ground surface, slurry in pile holes is guaranteed to be filled uniformly and filled with soilless impurities in the grouting process, the forming quality of the micro pile group 1 is guaranteed, further, the sliding of soil bodies of the lower layer of the sloping field is blocked, the hidden troubles of displacement, collapse and the like of the sloping field caused by the sliding of the soil body of the lower layer are reduced, and the stability of the sloping field is guaranteed. The micro pile group 1 and the concrete surface layer 2 are constructed by adopting the micro supporting method suitable for soft foundation treatment in the second embodiment, the anchor rods 4 can be applied while excavating the subsequent slope soil, and the stable slope composite supporting structure wall is formed by the micro pile group 1 and the concrete surface layer 2, so that the problems of slippage, collapse and the like of the slope during earthwork excavation can be reduced, the earthwork excavation and backfilling engineering quantity is further reduced, the cost is reduced, the composite supporting structure wall reduces the flow of a soil layer with high flow plasticity, and the stability of the slope under the complex geological conditions can be better ensured. Through the process, constructors can conveniently lay the micro pile group 1 by the micro supporting method suitable for soft foundation treatment, the micro pile group can be used for preventing unfavorable geological soil layers from sliding when a foundation pit is excavated, the construction process is safer and more reliable, and the stability of the construction slope is ensured.
Preferably, in the punching step a, the cement mixing pile machine is provided with a spiral drill, a grouting pipe is embedded in the spiral drill, a feeding end of the high-pressure grouting machine is communicated with the pulping tank, a discharging end of the high-pressure grouting machine penetrates through the spiral drill and is communicated with the grouting pipe, after the spiral drill penetrates through a soil layer, a grouting pump of the high-pressure grouting machine is started, the grouting pipe performs grouting, at the moment, the cement mixing pile machine drills a hole through the spiral drill, and simultaneously performs grouting on a hole wall through the grouting pipe to form a grouting protection wall, and after a pile hole required by design is formed, the spiral drill is gradually lifted to finally evacuate the pile hole. The inside hollow structure that is of auger bit through embedded slip casting pipe to link to high-pressure slip casting machine, make cement stirring stake machine accessible auger bit and slip casting pipe realize the while drilling slip casting dado, the work progress is not only high-efficient but also safe and reliable.
Preferably, in the pipe-driving step B, the cement mixing pile machine hoists the steel pipe to the bottom of the pile hole by using hoisting equipment, so that the steel pipe is inserted into the pile hole according to the designed elevation position, and then the grouting pipe is buried along the periphery of the pipe body of the steel pipe, so as to realize grouting. Through the process, the periphery of the steel pipe can be completely coated by the slurry, and the strength of the combination of the steel pipe and the slurry is ensured, so that the forming quality of the micro pile group 1 is ensured.
Preferably, in the drilling step a, firstly, the auger bit and the grouting pipe synchronously perform grouting while drilling at a grouting force of 0.5MPA and a speed of 2.5 meters per minute, the drilling speed is reduced to 1 meter per minute after the auger bit and the grouting pipe reach the sand layer, the grouting is performed for 5 seconds after the auger bit and the grouting pipe reach the bottom of the pile hole required by design, then the auger bit and the grouting pipe are pressurized to 1.5MPA and then are lifted at a speed of 1 meter per minute until the top of the pile hole. Through the process, the construction process of the micro pile group 1 is stable, efficient, safe and reliable.
Preferably, in the grouting step C, the concrete is transferred by a crane or a tower crane and then poured through a hopper to form the concrete surface layer 2. Through the process, the concrete surface layer 2 is efficiently paved.
Preferably, in the grouting step C, the grouting pipe is grouted to the pile hole at a grouting pressure of 1.5 MPA. Through the process, the grouting pressure is proper, and the stability and reliability of the grouting process are guaranteed.
Preferably, the micro support method suitable for soft foundation treatment further comprises a pipe cleaning step E, in the pipe cleaning step E, before the punching step A and after the pipe drawing step D, water is injected to clean the grouting pipes, and whether the grouting pipes are smooth is checked to ensure smooth grouting. Through the process, smooth grouting is ensured when the grouting pipe is used for grouting construction, so that the construction efficiency and the construction quality are ensured.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (6)
1. The utility model provides a miniature stake supporting construction suitable for soft base is handled which characterized in that:
comprises a micro pile group (1) and a concrete surface layer (2),
the concrete surface layer (2) is paved on the micro pile group (1) to play a role in reinforcing and fixing;
the micro pile group (1) is buried in a soil layer and used for reinforcing earthwork and preventing the soil layer from sliding.
2. The micro-pile support structure for soft foundation treatment as claimed in claim 1, wherein:
the micro pile supporting structure suitable for soft foundation treatment further comprises a reinforced concrete panel (3);
one side of the reinforced concrete panel (3) is connected with the end part of the concrete surface layer (2), and the other side of the reinforced concrete panel (3) is embedded in the soil layer to cover the micro pile group (1).
3. The micro-pile support structure for soft foundation treatment as claimed in claim 1, wherein:
the micro pile supporting structure suitable for soft foundation treatment further comprises an anchor rod (4);
one end of the anchor rod (4) is fixedly connected with the concrete surface layer (2), and the other end of the anchor rod (4) penetrates through the micro pile group (1) to be inserted into a soil layer so as to play a role in strengthening and fixing.
4. The micro-pile support structure for soft foundation treatment as claimed in claim 1, wherein:
the micro pile group (1) is formed by uniformly distributing and mutually compounding a plurality of single micro piles (11).
5. A micro-pile support structure suitable for soft foundation treatment as claimed in claim 2, wherein:
the micro pile supporting structure suitable for soft foundation treatment further comprises fastening steel bars (5);
the reinforced concrete panel (3) is fixedly connected with the soil layer through the fastening steel bar (5).
6. The micro-pile support structure for soft foundation treatment as claimed in claim 1, wherein:
the part of the micro pile group (1) exposed on the ground surface is paved with the concrete surface layer (2) to play a role in reinforcement, and the rest part of the micro pile group (1) is buried under the soil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020943605.5U CN212983829U (en) | 2020-05-28 | 2020-05-28 | Miniature pile supporting construction suitable for soft base is handled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020943605.5U CN212983829U (en) | 2020-05-28 | 2020-05-28 | Miniature pile supporting construction suitable for soft base is handled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212983829U true CN212983829U (en) | 2021-04-16 |
Family
ID=75421534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020943605.5U Active CN212983829U (en) | 2020-05-28 | 2020-05-28 | Miniature pile supporting construction suitable for soft base is handled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212983829U (en) |
-
2020
- 2020-05-28 CN CN202020943605.5U patent/CN212983829U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106545005B (en) | A kind of reinforcing body and reinforcement means of subway tunnel shield end | |
| CN104612162B (en) | A kind of Deep Foundation Pit of Metro Stations excavation construction method | |
| US11384502B2 (en) | Concrete inside interface processing structure and method for secant pile construction | |
| CN103306289B (en) | Foundation pit piled anchor dado concrete anchor cable top beam structure and construction method thereof | |
| CN105951711A (en) | Enclosing construction method of underground continuous wall of seashore power station | |
| CN102518135A (en) | Foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles | |
| CN108412519A (en) | The slight large deformation single-track tunnel suspension device of highlands soft rock and construction method | |
| CN102296630A (en) | Construction method of long-screw high-pressure mix jetting cement diaphragm wall | |
| CN109630015A (en) | A kind of friction pile mechanical hole building method | |
| CN105155550A (en) | Construction method for digging deep foundation pit in large-thickness highly weathered sandstone stratum in combined supporting mode | |
| CN111560962A (en) | Backfill area foundation pit supporting structure and construction method thereof | |
| CN106907157B (en) | A kind of shield machine normal pressure opens the cabin operation construction method | |
| CN106065628B (en) | Based on the major diameter running water pipe security protection construction method faced forever with reference to theory | |
| CN112177635A (en) | Construction method of step multiple advanced small guide pipe and construction method of overlapped tunnel | |
| CN102235007B (en) | Method for supporting deep foundation with upper nail-lower pile combination | |
| CN115539048A (en) | Construction method for shallow-buried bias tunnel portal | |
| CN106245655A (en) | Utilize the deep foundation pit supporting construction method of miniature steel pipe pile | |
| CN109610473A (en) | A kind of construction method of the large-scale pool structure foundation pit supporting system of municipal administration | |
| KR20110019674A (en) | G.w foundation reinforcement method | |
| CN113216215A (en) | Deep groove support reverse construction method in complex environment | |
| CN107060778B (en) | Pass through super high-rise building group back filled region method for tunnel construction | |
| CN111810185B (en) | Tunnel bottom pre-reinforcement construction method | |
| CN205576957U (en) | Stake end pilework | |
| CN105484270B (en) | Reinforcement protection construction method of high steep old rubble retaining wall adjacent to deep foundation pit | |
| CN208472713U (en) | A kind of composite structure mini pile for administering small-sized landslide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |