CN115478543B - Artificial hole digging pile foundation pit supporting structure and construction method - Google Patents
Artificial hole digging pile foundation pit supporting structure and construction method Download PDFInfo
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- CN115478543B CN115478543B CN202211318927.0A CN202211318927A CN115478543B CN 115478543 B CN115478543 B CN 115478543B CN 202211318927 A CN202211318927 A CN 202211318927A CN 115478543 B CN115478543 B CN 115478543B
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- anchor rod
- frame
- foundation pit
- rod sleeve
- pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The application discloses a foundation pit supporting structure of an artificial hole digging pile and a construction method, and relates to the field of foundation pit construction technology, the foundation pit supporting structure comprises an outer retaining wall and an anchor rod, wherein the outer retaining wall is sleeve-shaped, a cast-in-situ pile is arranged in the outer retaining wall, an anchor rod sleeve is also pre-buried in the cast-in-situ pile, the anchor rod sleeve points to the other side away from the foundation pit from one side close to the foundation pit, and both ends of the anchor rod sleeve are propped against the inner wall of the outer retaining wall; the outer retaining wall is provided with avoidance holes at two ends corresponding to the anchor rod sleeves, and the anchor rod penetrates through the two avoidance holes and the anchor rod sleeves and anchors the cast-in-situ pile column to the surrounding land of the foundation pit. The application has the effects of reducing the occupation of the width of the fertilizer tank and being beneficial to improving the convenience of the constructor in the operation of the side of the fertilizer tank.
Description
Technical Field
The application relates to the field of foundation pit construction technology, in particular to a foundation pit supporting structure of a manual hole digging pile and a construction method.
Background
The foundation pit supporting structure is used for ensuring the safety of underground structure construction and surrounding environment of the foundation pit, and adopts supporting, reinforcing and other protecting measures for the side wall and surrounding environment of the foundation pit, and mainly comprises a soil retaining structure, usually steel sheet piles, reinforced concrete sheet piles, column type filling piles, underground continuous walls and the like.
At present, when building construction is carried out in some urban areas, the surrounding environment condition of a site is complex, the site and a road are narrow, large equipment is not easy to enter, the construction noise of the large equipment is large, the problem of disturbing people is easy to generate, and meanwhile, the deformation of surrounding houses and pipelines is caused for reducing the soaking of mud into stratum. Under such circumstances, the foundation pit supporting structure often adopts a supporting scheme of combining manual hole digging piles with anchor cable structures.
In the related art, the foundation pit supporting structure of the manual hole digging pile mainly comprises a manual hole digging pile and an anchor rope structure, wherein the anchor rope structure comprises a concrete anchor rod, a steel strand, a waist beam and a steel strand anchorage device. The concrete anchor rod is cast in situ through an orifice formed on the side wall of the foundation pit, is positioned between two adjacent artificial hole digging piles, and is obliquely downwards arranged from one side of the foundation pit to the outer side of the foundation pit; the steel stranded wires are arranged along the concrete anchor rod and are embedded in the concrete anchor rod, and one end of the foundation pit, which is close to the steel stranded wires, is exposed out of the concrete anchor rod; the waist beam is cast on the side wall of the foundation pit through the template, the waist beam is connected with each manual hole digging pile, and the waist beam protrudes out of the manual hole digging pile towards one side of the foundation pit so as to ensure the reinforcing effect of the manual hole digging pile; meanwhile, one end of the steel strand in the foundation pit penetrates through the waist beam, the locking piece is located on one side, away from the concrete anchor rod, of the waist beam, and the steel strand anchor is used for tensioning the steel strand and locked on the steel strand.
Aiming at the related technology, the steel strand anchor and the steel strand are used for tensioning the waist beam, and the waist beam is connected with the manual hole digging pile, so that the manual hole digging pile can be reinforced. However, for some building areas, especially the building areas in urban areas, the width of the fertilizer groove is strictly controlled to ensure the building area, the wale protrudes to one side of the foundation pit to be used for manual hole digging piles, the width of the fertilizer groove is severely compressed, and thus constructors are difficult to operate at the side of the fertilizer groove, and the problem to be improved exists.
Disclosure of Invention
In order to solve the problem that in the related art, an anchor rope structure and a waist beam are matched to anchor a manual hole digging pile, the width of a fertilizer groove is seriously compressed, so that a constructor is difficult to operate at the side of the fertilizer groove, the application provides a foundation pit supporting structure of the manual hole digging pile and a construction method.
The application provides a foundation pit supporting structure of a manual hole digging pile, which adopts the following technical scheme:
the foundation pit supporting structure of the manual hole digging pile comprises an outer retaining wall and an anchor rod, wherein the outer retaining wall is sleeve-shaped, a cast-in-situ pile is arranged in the outer retaining wall, an anchor rod sleeve is pre-buried in the cast-in-situ pile, the anchor rod sleeve points to the other side away from the foundation pit from one side close to the foundation pit, and two ends of the anchor rod sleeve are both abutted against the inner wall of the outer retaining wall;
the outer retaining wall is provided with avoidance holes at two ends corresponding to the anchor rod sleeves, and the anchor rod penetrates through the two avoidance holes and the anchor rod sleeves and anchors the cast-in-situ pile column to the surrounding land of the foundation pit.
By adopting the technical scheme, the anchor rod sleeve is pre-buried in the cast-in-situ pile, a space for the anchor rod to penetrate is formed on the cast-in-situ pile, and the outer protecting wall is provided with the avoidance holes at the two ends corresponding to the anchor rod sleeve. In actual construction, when the foundation pit is excavated to a preset depth, the cast-in-situ waist beam is not required to be built, the anchoring rod can penetrate through the two avoidance holes and the anchoring rod sleeve, and the cast-in-situ pile is anchored on the peripheral land of the foundation pit, so that the cast-in-situ pile can be anchored, the occupation of the width of the fertilizer slot is reduced, and convenience of operation of constructors on the side of the fertilizer slot is improved.
It is worth mentioning that the above anchoring manner does not damage the cast-in-situ pile itself, and can ensure the reinforcing effect of the cast-in-situ pile. In addition, the anchor rod sleeve not only can provide a space for the anchor rod to pass through, but also can ensure the strength of the cast-in-situ pile at the peripheral side part of the anchor rod sleeve.
Preferably, both end surfaces of the anchor rod sleeve are vertical planes;
and a supporting plate is also fixed at one end of the anchor rod sleeve, which is close to the foundation pit, and the supporting plate is parallel to the end face of the anchor rod sleeve.
By adopting the technical scheme, on one hand, the two end faces of the anchor rod sleeve are set to be vertical planes, the gap between the anchor rod sleeve and the outer retaining wall is reduced, and the situation that a large amount of concrete is poured into the anchor rod sleeve is reduced in the casting operation of the cast-in-situ pile. On the other hand, when the anchoring rod anchors the cast-in-situ pile, the supporting plate can be used as an anchor stress point, so that the condition that the pressure of the anchoring rod on the cast-in-situ pile is large and the cast-in-situ pile is damaged is reduced.
Preferably, a reinforcement cage is embedded in the cast-in-situ pile, and the anchor rod sleeve is fixed on the reinforcement cage;
positioning grooves are axially formed in two opposite sides of the outer retaining wall along the outer retaining wall, and two ends of the anchor rod sleeve are respectively embedded into the two positioning grooves and respectively abut against the bottom walls of the two positioning grooves.
Through adopting above-mentioned technical scheme, on the one hand, the stock cover is fixed in on the steel reinforcement cage to embed respectively in two constant head tanks with the both ends of stock cover, thereby fix a position stock cover and steel reinforcement cage, promote the convenience of installation stock cover and steel reinforcement cage, and help reducing the condition emergence of the outside dado lateral wall skew of steel reinforcement cage. On the other hand, when the both ends face of anchor rod cover sets up to vertical plane, the diapire of two constant head tanks is butt respectively to the both ends face of anchor rod cover, and the diapire of constant head tank can shutoff anchor rod cover's port, further reduces the condition emergence that concrete poured into in the anchor rod cover in a large number.
On the other hand, the construction method of the foundation pit supporting structure of the manual hole digging pile provided by the application adopts the following technical scheme:
the construction method of the foundation pit supporting structure of the manual hole digging pile comprises the following steps:
the preparation operation, binding a reinforcement cage, and fixing the anchor rod sleeve on the reinforcement cage;
constructing pile holes and outer retaining walls, excavating earthwork of the pile holes, and constructing the outer retaining walls;
lowering a reinforcement cage, namely lowering the reinforcement cage into the outer retaining wall, and enabling one end of the anchor rod sleeve to face the inner side of the foundation pit and the other end to face one side deviating from the foundation pit;
forming a cast-in-situ pile, pouring concrete into the outer retaining wall, and forming the cast-in-situ pile after solidification;
when the foundation pit is excavated to the height of the anchor rod sleeve, the part of the outer retaining wall is broken, so that one end of the anchor rod sleeve close to the foundation pit is exposed, the position, corresponding to the anchor rod sleeve, of one end, deviating from the foundation pit is broken, the anchor rod is constructed, and the anchor rod penetrates through the anchor rod sleeve and anchors the cast-in-situ pile.
Through adopting above-mentioned technical scheme, need not cast-in-place waist rail of building, pass the anchor pole and anchor cast-in-place stake with the anchor pole cover, reduce the occupation to the width of fertile groove, and help promoting constructor at the convenience of fertile groove side operation.
Preferably, in the step of material preparation, plugs are used to block the two ends of the anchor rod sleeve,
in the construction step of the outer retaining wall, pile holes are excavated from top to bottom in a segmented mode, the outer retaining wall comprises a plurality of sections of retaining wall sections, templates are arranged at the pile holes of each section after the pile holes are excavated, and corresponding sections of retaining wall sections are poured;
meanwhile, the side walls of the outer retaining wall at the two ends of the anchor rod sleeve are axially provided with positioning grooves along the outer retaining wall, and the positions of the bottom walls of the two positioning grooves corresponding to the end parts of the anchor rod sleeve are embedded with breakable blocking parts according to the design height of the anchor rod sleeve;
in the step of lowering the reinforcement cage, two ends of the anchor rod sleeve are respectively embedded into the two positioning grooves, and the two ends of the anchor rod sleeve are respectively opposite to the two easily broken blocking pieces.
By adopting the technical scheme, firstly, the two ends of the anchor rod sleeve are blocked by the plugs, and when the cast-in-situ pile is poured by concrete, the concrete is blocked from entering the anchor rod sleeve and blocking the anchor rod sleeve.
Secondly, the pile holes are excavated in a segmented mode, each pile hole section is cast in situ in time to protect the wall section, the side walls of the excavated pile holes are stabilized, and collapse of the side walls of the pile holes is reduced.
Thirdly, embedding the easily-broken blocking piece at the position of the outer protecting wall corresponding to the end part of the anchor rod sleeve, wherein the easily-broken blocking piece can be used as an observation standard, and when the foundation pit is deep enough to the easily-broken blocking piece, the deep-digging can be stopped, so that the anchoring of the cast-in-situ pile is performed; meanwhile, the easily broken blocking piece can facilitate the positioning operation and the breaking operation of the breaking position of the outer protecting wall by constructors, and is beneficial to reducing the damage to the outer protecting wall.
Preferably, pile hole sectional excavation mainly comprises excavation and manual trimming of hole excavating equipment;
the hole digging equipment comprises a frame and a lifting frame which is arranged on the frame in a lifting manner, wherein a driving part for driving the lifting frame to lift is further arranged on the frame, a mounting frame is detachably fixed on the lifting frame, a rotating shaft is rotatably arranged on the mounting frame, the rotating shaft is vertically arranged, a power assembly is further arranged on the lifting frame, a transmission piece is arranged on the mounting frame, the power assembly is connected with the rotating shaft through the transmission of the transmission piece and drives the rotating shaft to rotate, and the power assembly and the transmission piece are detachable;
the lower side of the rotating shaft is provided with a soil containing barrel, the barrel opening of the soil containing barrel faces upwards, the outer diameter of the soil containing barrel is smaller than the inner diameter of the outer retaining wall, the soil containing barrel is coaxially fixed with the rotating shaft, the bottom wall of the soil containing barrel is provided with a soil inlet, the soil inlet extends from the edge position of the bottom wall of the soil containing barrel to one side of the axis of the soil containing barrel, one end of the soil inlet, which is close to the axis of the soil containing barrel, the length of the soil inlet is not smaller than the radius of the soil containing barrel, a cutting knife is fixed on one side wall in the width direction of the soil inlet, and the cutting knife is obliquely downwards arranged towards the other side wall, which is far away from the width direction of the soil inlet; and the rotating shaft comprises a plurality of sections of shaft sections, and any two adjacent shaft sections are detachably and fixedly connected.
Through adopting above-mentioned technical scheme, in the actual construction, can adopt the equipment of digging to excavate the stake hole section earlier, then can widen, lateral wall and diapire flattening, unnecessary soil clearance by the manual work to the stake hole section. Regarding the application of the hole digging equipment, the power assembly drives the rotating shaft and the soil containing barrel to rotate through the rotating piece, the driving part drives the lifting frame to slowly descend, the cutting knife continuously cuts soil right below the soil containing barrel, and the later-cut soil pushes the soil firstly cut into the soil containing barrel, so that pile holes are dug deeply, and the soil is collected in the soil containing barrel; when more soil is in the soil containing barrel, the connection between the power assembly and the transmission part can be released, the connection between the mounting frame and the lifting frame is released, then the mounting frame and the soil containing barrel are lifted out of the pile hole through equipment such as a crane, and the soil in the soil containing barrel is cleaned out of the soil containing barrel; and then, the mounting frame is hung on the lifting frame, and the pile hole is continuously dug. When the pile hole depth is deeper and the length of the rotating shaft is insufficient, the shaft section can be added on the rotating shaft, the rotating shaft is prolonged, and the pile hole is normally dug. By the mode, the working strength of constructors is reduced, and the efficiency of pile hole digging is improved.
Preferably, the mounting groove has been seted up from the top down on the crane, in the mounting bracket embedding mounting groove, the crane upside rotates around vertical axis and is provided with the rocker, the rocker butt is in the upside of mounting bracket, just still be provided with on the crane and be used for driving rocker pivoted first driving piece.
Through adopting above-mentioned technical scheme, when relieving the mounting bracket and being connected with the crane, can be by first driving piece drive rocker motion for the upside of rocker withdrawal mounting bracket, at this moment, can carry out handling and make the mounting bracket break away from the crane to the mounting bracket, thereby make things convenient for the mounting bracket to install and uninstall on the crane.
Preferably, the power assembly comprises a driving motor and a belt wheel mechanism, the belt wheel mechanism comprises a first belt wheel, a second belt wheel and a transmission belt wound on the first belt wheel and the second belt wheel, the first belt wheel and the second belt wheel are both rotatably arranged on the swing frame, the rotation axis of the first belt wheel is collinear with the rotation axis of the swing frame, the second belt wheel is positioned on one side of the swing frame far away from the first belt wheel, the driving motor is arranged on the lifting frame, and the driving motor is in transmission connection with the first belt wheel and drives the first belt wheel to rotate;
the driving part is a driven gear, the driven gear is coaxially fixed at the upper end of the rotating shaft, a driving gear is coaxially fixed at the upper side of the second belt wheel, and the driving gear is meshed with the driven gear.
Through adopting above-mentioned technical scheme, on the one hand, when the mounting bracket is fixed in on the crane by the rocker, driving gear and driven gear meshing, driving motor can drive band pulley mechanism motion to drive driven gear and axis of rotation through the driving gear and rotate, thereby make the cutting knife of flourishing soil bucket downside cut soil, help guaranteeing to dig the normal clear of dark operation to the stake hole.
On the other hand, when the first driving piece drives the swing to withdraw from the upper side of the mounting frame, the meshing relationship between the driving gear and the driven gear is synchronously released while the fixed connection relationship between the mounting frame and the lifting frame is released, so that the connection and release of the matching relationship between the power assembly and the driving piece are facilitated.
Preferably, the side wall of the soil containing barrel is provided with a discharge port, the discharge port extends to the bottom wall of the soil containing barrel, a sealing plate is arranged at the discharge port and seals the discharge port, and the edge of one side of the sealing plate in the horizontal direction is hinged to the corresponding vertical side wall of the discharge port;
the lower extreme of axis of rotation is fixed with the support frame, be provided with on the support frame and be used for driving the pivoted second driving piece of sealing plate.
Through adopting above-mentioned technical scheme, when soil in the flourishing soil bucket is more, mounting bracket and flourishing soil bucket can be hung from the crane by equipment such as loop wheel machine, and at this moment, by second driving piece drive sealing plate rotation and open the discharge port to can rock flourishing soil bucket, soil in the flourishing soil bucket will deviate from flourishing soil bucket through discharge port and advance the soil mouth, thereby help the convenience to the dumping of flourishing soil bucket interior soil.
Preferably, a rotating frame is arranged at the lower side of the supporting frame, the rotating frame is rotatably connected to the rotating shaft, a stirring bracket is fixed at the lower side of the rotating frame, and the stirring bracket is detected to the bottom of the soil containing barrel; a connecting rod is arranged between one side of the rotating frame and the sealing plate, one end of the connecting rod is hinged to the rotating frame, and the other end of the connecting rod is hinged to the inner side of the sealing plate.
Through adopting above-mentioned technical scheme, when the soil in the soil bucket is held in the dumping, the second driving piece drive seals the board and rotates and open the discharge port, seals the board and will drive the rotating turret through the connecting rod and rotate, at this moment, stirs the support and will stir the soil in the soil bucket, further convenient dumping to soil in the soil bucket.
Preferably, a cutting knife is fixedly arranged at the edge position of the sealing plate, which is away from the hinge joint of the sealing plate and the side wall of the discharge port;
when overlooking the soil containing barrel, the orientation of the cutting knife and the cutting knife are clockwise or anticlockwise.
By adopting the technical scheme, after the pile hole section is dug, the second driving piece can slowly drive the sealing plate to rotate outwards, the cutting knife stretches out of the soil containing barrel and cuts the side wall of the pile hole, and in the rotating process of the soil containing barrel, the sealing plate gathers the soil guided to be cut into the soil containing barrel through the discharge port; when the soil in the soil containing barrel is more, the second driving piece pulls the sealing plate, the discharging opening is sealed, and then the soil containing barrel can be lifted out of the pile hole to pour out the soil, so that the pile hole section is widened, the working strength of constructors is further reduced, and the pile hole deep digging efficiency is improved.
And the cutting knife are arranged in the same direction, so that the condition that a large amount of soil leaks out from the soil inlet of the soil containing barrel in the pile hole section widening process is reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the anchor rod sleeve is embedded in the cast-in-situ pile, the outer protecting wall is provided with the avoidance holes at the two ends corresponding to the anchor rod sleeve, the anchor rod can penetrate through the two avoidance holes and the anchor rod sleeve to anchor the cast-in-situ pile, the occupation of the width of the fertilizer slot is reduced, and convenience of operation of constructors on the side of the fertilizer slot is improved;
2. the anchor rod sleeve and the steel reinforcement cage are positioned by the aid of the two positioning grooves, convenience in installing the anchor rod sleeve and the steel reinforcement cage is improved, and the situation that the steel reinforcement cage deflects to the side wall of the outer retaining wall is reduced;
3. the soil at the bottom of the pile hole section is cut by the cutting knife arranged at the lower side of the soil containing barrel, and the soil on the side wall of the pile hole is cut by the cutting knife arranged on the sealing plate, so that the depth and the width of the pile hole are excavated, the working intensity of constructors is greatly reduced, and the depth excavating efficiency of the pile hole is improved.
Drawings
FIG. 1 is a cross-sectional view of a foundation pit supporting structure mainly embodying an artificial hole digging pile according to the present embodiment;
FIG. 2 is a schematic view of the present embodiment, which mainly shows the structure of the outer retaining wall and the anchoring rod;
FIG. 3 is an exploded view of the present embodiment showing the primary wall segments and anchor rod sleeve construction;
fig. 4 is a schematic view mainly showing the structures of a reinforcement cage and an anchor rod sleeve in the embodiment;
FIG. 5 is an overall schematic diagram of a structure mainly embodying a hole digging apparatus according to the present embodiment;
FIG. 6 is an enlarged view of a portion A of FIG. 5, principally embodying the structure of the power assembly;
FIG. 7 is a schematic view of the mounting manner of the mounting frame according to the present embodiment;
FIG. 8 is a schematic view of an embodiment of a soil excavation assembly;
fig. 9 is a schematic view mainly showing the structures of a support frame and a rotating frame in the present embodiment;
fig. 10 is a schematic view mainly showing a structure of the embodiment in an open state of the sealing plate.
Reference numerals: 1. an outer retaining wall; 11. a retaining wall section; 111. the clamping ring groove is connected; 12. a positioning groove; 13. avoidance holes; 2. an anchor rod; 21. casting anchor rod in situ; 22. steel strand; 23. an anchor; 3. cast-in-situ pile; 31. a reinforcement cage; 32. an anchor rod sleeve; 321. a support plate; 4. a frame; 41. a guide rod; 42. driving the electric cylinder; 5. a lifting frame; 51. a power assembly; 511. a driving motor; 512. a pulley mechanism; 5121. a first pulley; 5122. a second pulley; 5123. a transmission belt; 513. a drive gear; 52. a mounting groove; 521. a through hole; 53. a swing frame; 54. a first electric cylinder; 6. a mounting frame; 61. a rotating shaft; 611. a shaft section; 62. a driven gear; 7. a digging assembly; 71. a soil containing barrel; 711. a support frame; 712. a soil inlet; 713. a discharge port; 714. sealing plate; 715. a second electric cylinder; 72. a cutting knife; 73. cutting knife; 8. a rotating frame; 81. the bracket is stirred; 82. a connecting rod; 100. a foundation pit; 200. pile holes; 300. a crown beam; 400. and (5) a bolt hole.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
In the related art, the fertilizer tank is a part which is excavated more to provide a working surface, generally refers to a space between the basement outer wall of a building and the foundation outer wall or the foundation pit edge, and is mainly applied to building operation. After the construction of the underground structure is completed, the fertilizer groove needs to be backfilled.
The embodiment of the application discloses a foundation pit supporting structure of a manual hole digging pile.
Referring to fig. 1, the foundation pit supporting structure of the manual hole digging pile comprises an outer protecting wall 1 and an anchoring rod 2, wherein the outer protecting wall 1 is vertical and is in a sleeve shape, a cast-in-situ pile 3 is arranged in the outer protecting wall 1, the cast-in-situ pile 3 is cast in the outer protecting wall 1 through concrete to be solidified and formed, the anchoring rod 2 penetrates through the outer protecting wall 1 and the cast-in-situ pile 3, and the cast-in-situ pile 3 is anchored on the outer wall of the foundation pit 100.
Specifically, referring to fig. 2 and 3, the outer retaining wall 1 includes a plurality of retaining wall sections 11 disposed in sequence from top to bottom, and the inner diameter of each retaining wall section 11 is gradually elongated from top to bottom. In any two adjacent retaining wall sections 11, the upper end face of the retaining wall section 11 positioned at the lower side is coaxially provided with a clamping ring groove 111, the clamping ring groove 111 is positioned at the outer side edge of the upper end face of the retaining wall section 11, and the lower end of the retaining wall section 11 positioned at the upper side is embedded into the clamping ring groove 111.
Referring to fig. 3 and 4, a positioning groove 12 is formed in the inner wall of the outer retaining wall 1 along the axial direction of the outer retaining wall 1 on one side, close to the foundation pit 100, and one side, away from the foundation pit 100. The reinforcement cage 31 and the anchor rod sleeve 32 are embedded in the cast-in-situ pile column 3, the reinforcement cage 31 is axially arranged along the outer retaining wall 1, the anchor rod sleeve 32 is tightly fixed in the middle of the reinforcement cage 31 through binding, two ends of the anchor rod sleeve 32 are respectively embedded into the positioning groove 12, and the anchor rod sleeve 32 is obliquely downwards arranged from one side of the foundation pit 100 to one side deviating from the foundation pit 100. Meanwhile, two end faces of the anchor rod sleeve 32 are formed by beveling, and after being arranged in the outer retaining wall 1, the two end faces of the anchor rod sleeve 32 are vertical planes; the end of the anchor rod sleeve 32, which is close to the interior of the foundation pit 100, is provided with a supporting plate 321, the supporting plate 321 is parallel to the end face of the anchor rod sleeve 32, the end part of the anchor rod sleeve 32 penetrates through the supporting plate 321, and the supporting plate 321 is welded and fixed with the anchor rod sleeve 32. And, anchor rod sleeves 32 are uniformly arranged on the reinforcement cage 31 at intervals along the vertical direction, and the support plates 321 are in one-to-one correspondence with the anchor rod sleeves 32.
Next, referring to fig. 1 and 3, the positions of the outer retaining wall 1 at two ends of the anchor rod sleeve 32 are respectively provided with an avoidance hole 13, the two avoidance holes 13 are respectively positioned in the two positioning grooves 12, and one ends of the support plate 321 and the anchor rod sleeve 32, which are away from the support plate 321, are exposed. The anchor rod 2 comprises a cast-in-situ anchor rod 21, a steel strand 22 and an anchor 23. The cast-in-situ anchor rod 21 passes through the two avoidance holes 13 and the anchor rod sleeve 32 and penetrates into the underground of one side of the outer retaining wall 1, which is far away from the foundation pit 100, and the end surface of the cast-in-situ anchor rod 21 on one side of the support plate 321 is flush with one side surface of the support plate 321, which is close to the foundation pit 100; the anchor 23 is positioned at one end of the cast-in-situ anchor rod 21 on the support plate 321, and the anchor 23 abuts against the support plate 321 and the end surface of the cast-in-situ anchor rod 21 on one side of the support plate 321; the steel strand 22 is pre-buried in the cast-in-situ anchor rod 21, and a portion of the steel strand 22 at one side of the support plate 321 passes through the anchor 23 and is anchored with the anchor 23.
In actual construction, the outer retaining walls 1 are uniformly arranged around the circumference of the foundation pit 100, the number of the outer retaining walls 1 is determined according to the circumference of a building area, the construction is not particularly limited, and the cast-in-situ pile 3 and the anchor rod 2 are arranged corresponding to the outer retaining walls 1. The crown beams 300 can be poured on the top of the cast-in-situ piles 3 through concrete, the crown beams 300 are arranged around the foundation pit 100, and the crown beams 300 are connected with the top of each cast-in-situ pile 3.
The implementation principle of the foundation pit supporting structure of the manual hole digging pile provided by the embodiment of the application is as follows: the anchor rod sleeve 32 is pre-buried in the cast-in-situ pile 3, so that a path for the anchor rod 2 to pass through is formed on the cast-in-situ pile 3. In actual construction, the cast-in-situ anchor rod 21 can pass through the two avoidance holes 13 and the anchor rod sleeve 32 and is matched with the steel stranded wires 22 pre-buried in the cast-in-situ anchor rod 21 through the anchor 23 to anchor the cast-in-situ pile 3.
The embodiment of the application also discloses a construction method of the foundation pit supporting structure of the manual hole digging pile.
Referring to fig. 1 and 4, the construction method of the foundation pit supporting structure of the manual hole digging pile comprises the following steps:
s1, material preparation operation. Binding a reinforcement cage 31, beveling the anchor rod sleeve 32 by adopting a cutting machine, penetrating one end of the anchor rod sleeve 32 through a supporting plate 321, enabling the supporting plate 321 to be parallel to the end face of the anchor rod sleeve 32, and welding the supporting plate 321 on the anchor rod sleeve 32; then, the anchor rod sleeve 32 is fastened and fixed on the reinforcement cage 31 through the fastening bar, and both ends of the anchor rod sleeve 32 are blocked by plugs. In this embodiment, the plug may be a block-shaped object that is easy to break, such as a mud block or a wood block.
S2, constructing the pile hole 200 and the outer retaining wall 1. Pile hole 200 is excavated from top to bottom in a sectional manner, the earth in the middle part is excavated first, and then the periphery is widened, so that the cross-sectional size of pile hole 200 is effectively controlled. The outer retaining wall 1 comprises a plurality of retaining wall sections 11, after construction of each pile hole 200 is finished, namely, a reinforcing mesh is arranged at the pile hole 200, then a template is arranged at the inner side of the reinforcing mesh, then concrete is poured into the template and is vibrated to be compact, the corresponding retaining wall section 11 is formed after the concrete is condensed, and the template is removed correspondingly. In this embodiment, the mold plate for forming the retaining wall section 11 may be a structure formed by splicing a plurality of aluminum mold plates. Simultaneously, the side of the template close to the foundation pit 100 and the side away from the foundation pit 100 are outwards protruded, and positioning grooves 12 are formed on the two opposite side walls of the outer retaining wall 1 along the axial direction of the outer retaining wall 1; in addition, according to the design height of the anchor rod sleeve 32, the positions of the bottom walls of the two positioning grooves 12 corresponding to the end parts of the anchor rod sleeve 32 are pre-buried with easy-to-break blocking pieces, the easy-to-break blocking pieces can be fixed on the reinforcing steel bar net before the template is installed, and the parts of the reinforcing steel bar net corresponding to the easy-to-break blocking pieces are prevented from being broken, in the embodiment, the easy-to-break blocking pieces can be block-shaped objects which are easy to break, such as mud blocks, wood blocks and the like.
It should be specifically noted that the sectional excavation of the pile hole 200 mainly includes excavation of the hole excavating equipment and manual trimming.
Wherein, referring to fig. 5 and 6, the hole digging device comprises a frame 4 and a lifting frame 5 arranged on the frame 4 in a lifting manner, and the frame 4 is further provided with a driving component for driving the lifting frame 5 to lift. The lifting frame 5 is detachably fixed with a mounting frame 6, a rotating shaft 61 is vertically arranged on the mounting frame 6 in a rotating mode, and the lower end of the rotating shaft 61 is provided with an excavating component 7. The lifting frame 5 is also provided with a power assembly 51, the mounting frame 6 is provided with a transmission member, the power assembly 51 is connected with the rotating shaft 61 through the transmission member in a transmission manner and drives the rotating shaft 61 to rotate, and the power assembly 51 and the transmission member are detachable.
Specifically, referring to fig. 5, the frame 4 is in a three-dimensional frame shape, and the middle of the frame 4 is penetrated up and down. The lifting frame 5 is positioned in the middle of the frame 4, guide rods 41 are vertically fixed on two opposite sides of the frame 4 in the horizontal direction, and each guide rod 41 penetrates through the edge position of the lifting frame 5 and is in sliding fit with the lifting frame 5. The driving part is a driving electric cylinder 42, a cylinder body of the driving electric cylinder 42 is fixed on the frame 4, a telescopic rod of the driving electric cylinder 42 is vertically upwards arranged, the upper end of the telescopic rod of the driving electric cylinder 42 is fixed with the lifting frame 5, and the edges of two opposite sides of the frame 4 of the driving electric cylinder 42 are respectively provided with one driving electric cylinder.
Referring to fig. 6 and 7, the middle part of the lifting frame 5 is provided with a mounting groove 52 from top to bottom, the bottom of the mounting groove 52 is provided with a through hole 521, and the diameter of the through hole 521 is larger than the inner diameter of the outer protection wall 1. The mounting bracket 6 from the top down imbeds in the mounting groove 52, and the upside of crane 5 is provided with the rocker 53, and one side of rocker 53 length direction rotates on crane 5 around vertical axis, and the rocker 53 butt in the upside of mounting bracket 6. The lifting frame 5 is also provided with a first driving piece, the first driving piece is a first electric cylinder 54, the cylinder body of the first electric cylinder 54 is hinged to the edge position of the lifting frame 5, and the end part of the telescopic rod of the first electric cylinder 54 extends to the middle part of the swinging frame 53 and is hinged to the middle part of the swinging frame 53.
The power assembly 51 includes a drive motor 511 and a pulley mechanism 512. The pulley mechanism 512 includes a first pulley 5121, a second pulley 5122, and a belt 5123 wound around the first pulley 5121 and the second pulley 5122, the first pulley 5121 is rotatably disposed on the swing frame 53, the rotation axis of the first pulley 5121 is collinear with the rotation axis of the swing frame 53, and the second pulley 5122 is rotatable around a vertical axis at an end of the swing frame 53 facing away from the first pulley 5121. The driving motor 511 is fixedly installed on the lifting frame 5 above the first pulley 5121, and an output shaft of the driving motor 511 is vertically downward and coaxially fixed with the first pulley 5121. The power unit 51 further includes a driving gear 513, the driving gear 513 is coaxially fixed to the upper side of the second pulley 5122, the transmission member is a driven gear 62, the driven gear 62 is coaxially fixed to the upper end of the rotation shaft 61, and the driving gear 513 and the driven gear 62 are engaged.
Next, referring to fig. 8 and 9, the rotating shaft 61 includes a plurality of shaft segments 611, and any adjacent two shaft segments 611 are coaxially fixed by a coupling. The soil excavation assembly 7 includes a soil bucket 71 and a cutter 72. The opening of the soil containing barrel 71 is upward, the outer diameter of the soil containing barrel 71 is smaller than the inner diameter of the outer retaining wall 1, a supporting frame 711 is fixed on the upper side in the soil containing barrel 71, the supporting frame 711 is fixed with the lower end of the rotating shaft 61, and the axis of the soil containing barrel 71 is collinear with the axis of the rotating shaft 61. The bottom wall of the soil containing barrel 71 is provided with a soil inlet 712, the soil inlet 712 extends from the edge of the bottom wall of the soil containing barrel 71 to one side of the axis of the soil containing barrel 71, one end of the soil inlet 712, which is close to the axis of the soil containing barrel 71, is close to the axis of the soil containing barrel 71 and deviates from the axis of the soil containing barrel 71, and the length of the soil inlet 712 is not smaller than the radius of the soil containing barrel 71. The cutter 72 is disposed along the length direction of the soil inlet 712, the cutter 72 is welded or bolted to one side wall of the soil inlet 712 in the width direction, and the cutter 72 is disposed obliquely downward toward the other side wall facing away from the soil inlet 712 in the width direction. In this embodiment, three soil inlets 712 are uniformly spaced around the axis of the soil barrel 71 on the bottom wall of the soil barrel 71, and the cutters 72 are in one-to-one correspondence with the soil inlets 712.
Referring to fig. 9 and 10, a discharge port 713 is opened at a lower side position of the sidewall of the soil tub 71, and a lower side of the discharge port 713 extends to the bottom wall of the soil tub 71. The discharge port 713 is provided with a sealing plate 714, the sealing plate 714 is arc-shaped, the arc-shaped curvature center of the sealing plate 714 is positioned on the axis of the soil containing barrel 71, and the edge of one side of the arc-shaped running direction of the sealing plate 714 is hinged on the corresponding vertical side wall of the discharge port 713. The support frame 711 is provided with a second driving piece, the second driving piece is a second electric cylinder 715, a cylinder body of the second electric cylinder 715 is hinged on the support frame 711, and the end part of a telescopic rod of the second electric cylinder 715 is hinged with the inner side of the sealing plate 714. The shovel assembly 7 further includes a cutter 73, the cutter 73 being disposed in a vertical direction, the cutter 73 being welded or bolted to the sealing plate 714 at an edge position facing away from its hinge with the side wall of the discharge port 713. And, the discharge openings 713 are uniformly spaced apart from each other on the side wall of the soil containing barrel 71 around the axis of the soil containing barrel 71, and the sealing plate 714, the cutting knife 73 and the second electric cylinder 715 are all in one-to-one correspondence with the discharge openings 713. In other embodiments, the plurality of discharge openings 713 and the plurality of sealing plates 714 are uniformly arranged around the axis of the soil containing barrel 71 at intervals, the length of the cutting knife 73 is shortened, the plurality of cutting knives 73 are arranged on each sealing plate 714 in the vertical direction, and the cutting knives 73 on two adjacent sealing plates 714 are arranged in a staggered manner in the vertical direction, so that the cutting pressure of the cutting knives 73 on each sealing plate 714 on soil can be reduced, and the occurrence of the condition that the sealing plates 714 are deformed under compression is reduced. When the soil containing tub 71 is seen in plan view, the cutter 72 and the cutter 73 are both oriented clockwise.
In order to further clean the soil in the soil containing barrel 71, a rotating frame 8 is arranged on the lower side of the supporting frame 711, the rotating frame 8 is rotatably connected to the lower end of the rotating shaft 61, a stirring support 81 is fixed to the edge position of the rotating frame 8, the stirring support 81 is vertically downward and extends to the bottom of the soil containing barrel 71, and three stirring supports 81 are uniformly arranged on the rotating frame 8 at intervals around the axis of the rotating shaft 61. Meanwhile, a connecting rod 82 is arranged between the edge position of the rotating frame 8 and the sealing plate 714, one end of the connecting rod 82 is hinged on the rotating frame 8, the other end of the connecting rod 82 is hinged on the inner side of the sealing plate 714, and the connecting rods 82 are in one-to-one correspondence with the sealing plate 714.
Note that, in actual construction, the three second cylinders 715 are extended and retracted synchronously, and the three sealing plates 714 are pushed to open and close synchronously. For the control of the three second electric cylinders 715, a remote controller may be connected through a remote communication component, the remote communication component may be configured as a 4G communication module or a bluetooth communication module that is in signal connection with the controllers of the three second electric cylinders 715, the controller of the second electric cylinders 715 may be configured as a forward and reverse rotation controller, the remote controller may be configured as a PLC controller, and a storage battery may be fixed on the support frame 711, and the storage battery supplies power to the three second electric cylinders 715 and the remote communication component.
The concrete steps of pile hole 200 sectional excavation are as follows:
firstly, pile hole section deep digging is carried out. Firstly, moving the frame 4 to enable the axis of the soil containing barrel 71 to be aligned with the center position of the excavated position of the pile hole 200; then, the driving motor 511 drives the belt wheel mechanism 512 to operate, the driving gear 513 and the driven gear 62 drive the rotating shaft 61 and the soil containing barrel 71 to rotate, the driving motor 42 drives the lifting frame 5 and the mounting frame 6 to gradually descend, the cutting knife 72 cuts soil, and the soil enters the soil containing barrel 71 under the guidance of the cutting knife 72 and the pushing of the soil to be cut subsequently. When more soil is in the soil containing barrel 71, the driving cylinder 42 and the driving motor 511 can be turned off, the first electric cylinder 54 drives the swinging frame 53 to rotate, so that the swinging frame 53 exits from the upper side of the mounting frame 6, and the driving gear 513 and the driven gear 62 are separated, and at the moment, the mounting frame 6 and the soil containing barrel 71 can be lifted upwards by adopting a crane; subsequently, the three second electric cylinders 715 can be remotely controlled to synchronously extend through the remote controller, the three sealing plates 714 synchronously rotate outwards, the rotating frame 8 is driven by the connecting rod 82 to rotate, the stirring support 81 stirs the soil in the soil containing barrel 71, and the soil is dumped out through the discharge port 713 and the soil inlet 712. After that, the three second cylinders 715 are controlled to be contracted, the three sealing plates 714 are used for sealing the discharge openings 713, the mounting frame 6 is lifted on the lifting frame 5, and the pile hole section is further dug. And (3) reciprocating in this way, gradually digging the pile hole section.
It should be noted that, when the driving cylinder 42 drives the lifting frame 5 to drop, the cutting knife 72 is difficult to cut the bottom of the pile hole 200, at this time, a constructor can lift the mounting frame 6 and the soil containing barrel 71, and add a new shaft segment 611 in the middle of the rotating shaft 61, so as to ensure that the soil digging assembly 7 digs the pile hole 200 normally.
Secondly, pile hole section widening is carried out. The lifting frame 5 and the mounting frame 6 can be driven by the driving electric cylinder 42 to lift and lower, and the height of the soil containing barrel 71 is controlled; then, the three second electric cylinders 715 are controlled to slowly extend, the sealing plates 714 rotate outwards and extend out of the cutting knives 73, the cutting knives 73 on the three sealing plates 714 cooperate to cut the soil on the side walls of the pile hole sections, so that the pile hole sections are widened, and the soil is gathered into the soil containing barrel 71 under the guidance of the arc sealing plates 714. When more soil is in the soil containing barrel 71, the second electric cylinder 715 pulls the sealing plate 714 and closes the discharge port 713, and then the swing frame 53 is withdrawn from the upper side of the mounting frame 6, so that the mounting frame 6 and the soil containing barrel 71 can be lifted out and the soil in the soil containing barrel 71 can be dumped.
Thirdly, manually trimming. After the pile hole section is excavated and widened, the installation frame 6 and the soil containing barrel 71 can be lifted out, then constructors can go down to the bottom of the pile hole 200, and the current pile hole section is trimmed, wherein the trimming mainly comprises widening, leveling of the side wall and the bottom wall, cleaning of redundant soil and the like.
S3, lowering the reinforcement cage 31. The reinforcement cage 31 is lowered into the outer retaining wall 1 through the crane, the supporting plate 321 is embedded into the positioning groove 12 close to one side of the foundation pit 100, one end of the anchor rod sleeve 32, which is away from the supporting plate 321, is embedded into the positioning groove 12 away from one side of the foundation pit 100, two ends of the anchor rod sleeve 32 are respectively opposite to the corresponding two easily broken blocking pieces, the reinforcement cage 31 is higher than the outer retaining wall 1, and the crown beam 300 is conveniently connected.
S4, forming the cast-in-situ pile 3, pouring concrete into the outer retaining wall 1, vibrating and compacting, and forming the cast-in-situ pile 3 after solidification. In addition, the crown beams 300 can be poured on the top of the cast-in-situ piles 3 through concrete, the crown beams 300 are arranged around the foundation pit 100, and the crown beams 300 are connected with the steel reinforcement cage 31 exposed at the top of each cast-in-situ pile 3.
S5, anchoring the anchoring rod 2.
S5.1, when the foundation pit 100 is excavated to the height of the anchor rod sleeve 32, the easily broken blocking pieces at the two opposite sides of the outer retaining wall 1 and the plugs at the two ends of the anchor rod sleeve 32 are sequentially broken from one side of the foundation pit 100, and avoidance holes 13 are formed at the two sides of the outer retaining wall 1, so that one side, close to the foundation pit 100, of the supporting plate 321 is exposed. The breaking operation can be performed by a chiseling mode or a drilling mode of a drilling machine.
S5.2, arranging a drilling machine, enabling a drill rod of the drilling machine to penetrate through the two avoidance holes 13 and the anchor rod sleeve 32, drilling the anchor rod hole 400 towards the underground of one side, away from the foundation pit 100, of the outer retaining wall 1 along the axial direction of the anchor rod sleeve 32, and completing drilling of the anchor rod hole 400.
S5.3, lowering the steel stranded wires 22 into the anchor rod holes 400, and exposing the steel stranded wires 22 outside the support plate 321 at one side of the support plate 321; then, injecting concrete into the anchor rod hole 400, and forming a cast-in-situ anchor rod 21 after the concrete is solidified; finally, the part of the steel strand 22 at one side of the supporting plate 321 passes through the anchor 23 and is anchored with the anchor 23, thus completing the construction of the supporting structure.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. The construction method of the artificial hole digging pile foundation pit supporting structure comprises an outer protecting wall (1) and an anchor rod (2), wherein the outer protecting wall (1) is sleeve-shaped, a cast-in-situ pile (3) is arranged in the outer protecting wall (1), an anchor rod sleeve (32) is pre-buried in the cast-in-situ pile (3), the anchor rod sleeve (32) points to the other side away from the foundation pit (100) from one side close to the foundation pit (100), and two ends of the anchor rod sleeve (32) are all abutted to the inner wall of the outer protecting wall (1);
the two ends of the outer retaining wall (1) corresponding to the anchor rod sleeves (32) are respectively provided with an avoidance hole (13), and the anchor rods (2) penetrate through the two avoidance holes (13) and the anchor rod sleeves (32) and anchor the cast-in-situ pile (3) on the peripheral land of the foundation pit (100);
both end surfaces of the anchor rod sleeve (32) are vertical planes;
a supporting plate (321) is further fixed at one end, close to the foundation pit (100), of the anchor rod sleeve (32), and the supporting plate (321) is parallel to the end face of the anchor rod sleeve (32);
a reinforcement cage (31) is embedded in the cast-in-situ pile (3), and the anchor rod sleeve (32) is fixed on the reinforcement cage (31);
positioning grooves (12) are formed in two opposite sides of the outer protective wall (1) along the axial direction of the outer protective wall (1), and two ends of the anchor rod sleeve (32) are respectively embedded into the two positioning grooves (12) and respectively abutted against the bottom walls of the two positioning grooves (12); the method is characterized in that: the method comprises the following steps:
the preparation operation, binding the reinforcement cage (31), and fixing the anchor rod sleeve (32) on the reinforcement cage (31);
constructing a pile hole (200) and an outer protecting wall (1), excavating the earthwork of the pile hole (200), and constructing the outer protecting wall (1);
lowering a reinforcement cage (31), lowering the reinforcement cage (31) into the outer retaining wall (1), and enabling one end of the anchor rod sleeve (32) to face the inner side of the foundation pit (100) and the other end to face one side deviating from the foundation pit (100);
forming a cast-in-situ pile (3), pouring concrete into the outer retaining wall (1), and forming the cast-in-situ pile (3) after solidification;
the anchor rod (2) is anchored, when the foundation pit (100) is excavated to the height of the anchor rod sleeve (32), the part of the outer retaining wall (1) is broken, one end of the anchor rod sleeve (32) close to the foundation pit (100) is exposed, the position, which corresponds to the anchor rod sleeve (32) and is away from one end of the foundation pit (100), of the outer retaining wall (1) is broken, the anchor rod (2) is constructed, and the anchor rod (2) passes through the anchor rod sleeve (32) and anchors the cast-in-situ pile (3);
in the step of material preparation operation, plugs are adopted to block two ends of an anchor rod sleeve (32);
in the construction step of the outer retaining wall (1), pile holes (200) are excavated from top to bottom in a segmented mode, the outer retaining wall (1) comprises a plurality of sections of retaining wall sections (11), templates are arranged at the pile holes (200) of each section after the excavation of the pile holes (200) is finished, and the corresponding sections of retaining wall sections (11) are poured;
meanwhile, the side walls of the outer retaining wall (1) at the two ends of the anchor rod sleeve (32) are axially formed with positioning grooves (12) along the outer retaining wall (1), and the positions of the bottom walls of the two positioning grooves (12) corresponding to the end parts of the anchor rod sleeve (32) are pre-buried with easily-broken blocking pieces according to the design height of the anchor rod sleeve (32);
in the step of lowering the reinforcement cage (31), two ends of the anchor rod sleeve (32) are respectively embedded into the two positioning grooves (12), and the two ends of the anchor rod sleeve (32) are respectively opposite to the two easily-broken blocking pieces;
the sectional excavation of the pile hole (200) mainly comprises excavation of hole excavating equipment and manual trimming;
the hole digging equipment comprises a frame (4) and a lifting frame (5) which is arranged on the frame (4) in a lifting manner, a driving part which is used for driving the lifting frame (5) to lift is further arranged on the frame (4), a mounting frame (6) is detachably fixed on the lifting frame (5), a rotating shaft (61) is rotatably arranged on the mounting frame (6), the rotating shaft (61) is vertically arranged, a power assembly (51) is further arranged on the lifting frame (5), a transmission part is arranged on the mounting frame (6), the power assembly (51) is connected with the rotating shaft (61) through the transmission of the transmission part and drives the rotating shaft (61) to rotate, and the power assembly (51) and the transmission part are detachable;
the lower side of the rotating shaft (61) is provided with a soil containing barrel (71), a barrel opening of the soil containing barrel (71) faces upwards, the outer diameter of the soil containing barrel (71) is smaller than the inner diameter of the outer protective wall (1), the soil containing barrel (71) is coaxially fixed with the rotating shaft (61), the bottom wall of the soil containing barrel (71) is provided with a soil inlet (712), the soil inlet (712) extends from the edge position of the bottom wall of the soil containing barrel (71) to one side of the axis of the soil containing barrel (71), one end of the soil inlet (712) close to the axis of the soil containing barrel (71) is close to the axis of the soil containing barrel (71), the length of the soil inlet (712) is not smaller than the radius of the soil containing barrel (71), one side wall of the soil inlet (712) in the width direction is fixedly provided with a cutting knife (72), and the cutting knife (72) is obliquely arranged downwards towards the other side wall of the soil inlet (712) in the width direction; the rotating shaft (61) comprises a plurality of sections of shaft sections (611), and any two adjacent shaft sections (611) are detachably and fixedly connected;
a discharge port (713) is formed in the side wall of the soil containing barrel (71), the discharge port (713) extends to the bottom wall of the soil containing barrel (71), a sealing plate (714) is arranged at the discharge port (713), the sealing plate (714) seals the discharge port (713), and one side edge of the sealing plate (714) in the horizontal direction is hinged to the corresponding vertical side wall of the discharge port (713);
a supporting frame (711) is fixed at the lower end of the rotating shaft (61), and a second driving piece for driving the sealing plate (714) to rotate is arranged on the supporting frame (711);
the lower side of the support frame (711) is provided with a rotating frame (8), the rotating frame (8) is rotationally connected to the rotating shaft (61), a stirring bracket (81) is fixed on the lower side of the rotating frame (8), and the stirring bracket (81) is detected to the bottom of the soil containing barrel (71); a connecting rod (82) is arranged between one side of the rotating frame (8) and the sealing plate (714), one end of the connecting rod (82) is hinged to the rotating frame (8), and the other end of the connecting rod (82) is hinged to the inner side of the sealing plate (714).
2. The construction method of the foundation pit supporting structure of the manual hole digging pile, which is characterized by comprising the following steps: the lifting frame (5) is provided with a mounting groove (52) from top to bottom, the mounting frame (6) is embedded into the mounting groove (52), the upper side of the lifting frame (5) is rotatably provided with a swing frame (53) around a vertical axis, the swing frame (53) is abutted to the upper side of the mounting frame (6), and the lifting frame (5) is also provided with a first driving piece for driving the swing frame (53) to rotate;
the power assembly (51) comprises a driving motor (511) and a belt wheel mechanism (512), the belt wheel mechanism (512) comprises a first belt wheel (5121), a second belt wheel (5122) and a transmission belt (5123) wound on the first belt wheel (5121) and the second belt wheel (5122), the first belt wheel (5121) and the second belt wheel (5122) are both rotatably arranged on the swing frame (53), the rotation axis of the first belt wheel (5121) is collinear with the rotation axis of the swing frame (53), the second belt wheel (5122) is positioned on one side, far away from the first belt wheel (5121), of the swing frame (53), the driving motor (511) is erected on the lifting frame (5), and the driving motor (511) is in transmission connection with the first belt wheel (5121) and drives the first belt wheel (5121) to rotate.
The transmission member is a driven gear (62), the driven gear (62) is coaxially fixed at the upper end of the rotating shaft (61), a driving gear (513) is coaxially fixed at the upper side of the second belt wheel (5122), and the driving gear (513) is meshed with the driven gear (62).
3. The construction method of the foundation pit supporting structure of the manual hole digging pile, which is characterized by comprising the following steps: a cutting knife (73) is fixedly arranged at the edge position of the sealing plate (714) away from the hinge joint of the sealing plate and the side wall of the discharge port (713);
when the soil containing barrel (71) is overlooked, the orientations of the cutting knife (72) and the cutting knife (73) are clockwise or anticlockwise.
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| CN202211318927.0A CN115478543B (en) | 2022-10-26 | 2022-10-26 | Artificial hole digging pile foundation pit supporting structure and construction method |
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| GB658232A (en) * | 1949-10-24 | 1951-10-03 | Darin & Armstrong Inc | Hole digging apparatus |
| CN104264688A (en) * | 2014-10-22 | 2015-01-07 | 广州市城市规划勘测设计研究院 | Manual hole digging non-uniform pile support construction technology |
| CN106498950A (en) * | 2016-12-21 | 2017-03-15 | 大连交通大学 | Anchor head is placed in the Pile-Anchor Supporting for Deep Excavation system and its implementation of pile body |
| CN110344764A (en) * | 2019-07-26 | 2019-10-18 | 范茂丰 | Base expanding and base expanding reperfusion pile mechanical piling device and its pile making method |
| CN113445908A (en) * | 2021-07-01 | 2021-09-28 | 浙江豪城建设有限公司 | Piling device for building |
| CN214530660U (en) * | 2021-01-26 | 2021-10-29 | 韩宝庆 | Foundation pile pulling-out device for building construction |
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2022
- 2022-10-26 CN CN202211318927.0A patent/CN115478543B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB658232A (en) * | 1949-10-24 | 1951-10-03 | Darin & Armstrong Inc | Hole digging apparatus |
| CN104264688A (en) * | 2014-10-22 | 2015-01-07 | 广州市城市规划勘测设计研究院 | Manual hole digging non-uniform pile support construction technology |
| CN106498950A (en) * | 2016-12-21 | 2017-03-15 | 大连交通大学 | Anchor head is placed in the Pile-Anchor Supporting for Deep Excavation system and its implementation of pile body |
| CN110344764A (en) * | 2019-07-26 | 2019-10-18 | 范茂丰 | Base expanding and base expanding reperfusion pile mechanical piling device and its pile making method |
| CN214530660U (en) * | 2021-01-26 | 2021-10-29 | 韩宝庆 | Foundation pile pulling-out device for building construction |
| CN113445908A (en) * | 2021-07-01 | 2021-09-28 | 浙江豪城建设有限公司 | Piling device for building |
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