CN214614068U - Precast pile positioning device and core pile with same - Google Patents
Precast pile positioning device and core pile with same Download PDFInfo
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- CN214614068U CN214614068U CN202120365147.6U CN202120365147U CN214614068U CN 214614068 U CN214614068 U CN 214614068U CN 202120365147 U CN202120365147 U CN 202120365147U CN 214614068 U CN214614068 U CN 214614068U
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- 239000002131 composite material Substances 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 7
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- 239000007788 liquid Substances 0.000 description 5
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Abstract
The utility model provides a precast pile positioning device and a core pile with the same, which relate to the field of pile foundation engineering and solve the technical problems that the central axes of the core pile and the outer pile are easy to be not collinear when the core pile is implanted into the outer pile, and the bearing capacity is influenced by the deflection of the core pile; the precast pile positioning device at least comprises a pile top positioning component and a pile bottom positioning component, wherein the pile top positioning component and the pile bottom positioning component respectively comprise at least three abutting ends, the horizontal projections of all the abutting ends are positioned outside a core pile, the horizontal distances from all the abutting ends to the central axis of the core pile are equal, and the abutting ends are used for abutting against the wall of an outer pile hole so as to implant the core pile into a position which is collinear with the central axis of the outer pile; the utility model discloses top installation pile top locating component of core stake, locating component at the bottom of the bottom installation stake of core stake, through all butt end cooperations with the core stake plant with the position department of outer stake coaxial line, prevent that the core stake is crooked. The precast pile positioning device is simple in structure, low in cost and easy to operate, and the formed composite pile is good in construction quality, stable in structure and strong in bearing capacity.
Description
Technical Field
The utility model belongs to the technical field of pile foundation engineering technique and specifically relates to a precast pile positioner and have its core stake is related to.
Background
At present, the construction technology of precast piles develops rapidly, and as the precast piles have the advantages of large bearing capacity of single piles, reliable pile forming quality, high construction speed, short construction period, low construction cost and the like, and accord with the policy of precast fabricated buildings which are vigorously developed in China at present, the precast piles are widely applied to pile foundations of various buildings. In the construction process of the cement-soil composite precast pile, a core pile needs to be implanted before the initial setting of the cement-soil external pile.
The applicant has found that the prior art has at least the following technical problems:
core pile deviation often can appear when implanting the core pile, and core pile and outer pile are decentraction, and the straightness that hangs down can not satisfy the design requirement condition, will lead to the composite pile atress inhomogeneous, and vertical direction and horizontal direction bearing capacity reduce.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a precast pile positioning device and a core pile with the same, which solve the technical problems that the central axes of the core pile and the outer pile are not easy to be collinear when the core pile is implanted into the outer pile, and the bearing capacity is influenced by the deflection of the core pile in the prior art; the utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a precast pile positioner includes pile bolck locating component and pile bottom locating component at least, wherein:
pile top locating component with locating component all includes three butt end at least at the bottom of the stake, all the horizontal projection of butt end all is located outside the core pile, and all the butt end extremely the horizontal distance of core pile axis equals, the butt end be used for butt outer pile pore wall in order with the core pile implant with the collinear position of outer pile axis.
Preferably, the pile top positioning assembly and the pile bottom positioning assembly comprise fixing parts for fixing the core pile end plate, and the fixing parts are attached to the end plate plane.
Preferably, the pile top positioning assembly is an annular plate coaxially arranged with the core pile, and each part on the periphery of the annular plate forms a plurality of the abutting ends.
Preferably, the pile top positioning assembly is a structure formed by cutting off at least three arc plates at intervals from an annular plate, and the three abutting ends are arranged around the circle center of the annular plate at equal intervals or at non-equal intervals.
Preferably, the core pile is a hollow round pile, the inner diameter of the annular plate is larger than the aperture diameter of the core pile and smaller than the outer diameter of the core pile, and the outer diameter of the annular plate is larger than the outer diameter of the core pile; or the core pile is a hollow square pile, the inner diameter of the annular plate is larger than the aperture diameter of the core pile and smaller than the side length of the core pile, and the outer diameter of the annular plate is larger than the length of the diagonal line of the core pile;
and the annular plate can extend into the outer pile drill hole when being positioned on the core pile.
Preferably, all the abutting ends in the pile bottom positioning assembly are arranged at intervals, and a liquid return gap allowing slurry to return upwards exists between the adjacent abutting ends.
Preferably, in the pile bottom positioning assembly, all the abutting ends are bent upwards at least at the position close to the inner wall of the outer pile so as to reduce descending resistance.
Preferably, the pile bottom positioning assembly comprises four positioning ribs, the positioning ribs are arranged around the circle center of the cross section of the core pile at uniform intervals, all the positioning ribs are arranged along the radial direction of the core pile, and the length and the shape of each positioning rib are the same.
Preferably, all the one end of location muscle all aligns the setting with the core pile inner wall, and the other end all buckles to the pile bolck direction.
The utility model also provides a core pile, including core pile body and above-mentioned precast pile positioner, pile bolck locating component is fixed in core pile body upper end, locating component is fixed in at the bottom of the stake core pile body lower extreme.
The utility model provides a precast pile positioner and core stake compares with prior art, has following beneficial effect: when constructing composite pile, after the outer pile construction was accomplished, at the top installation pile bolck locating component of core stake, locating component at the bottom of the bottom installation pile bolck of core stake, through having all butt end cooperations of above-mentioned structure on pile bolck locating component and the pile bolck locating component, implant the core stake with the position department of outer pile coaxial line, can effectively guarantee the axis collineation setting of core stake and outer stake. The precast pile positioning device is simple in structure, low in cost and easy to operate, and the formed composite pile (outer pile and core pile) is good in construction quality, stable in structure and strong in bearing capacity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Figure 1 is a schematic structural view of a first embodiment of a pile top locating assembly;
FIG. 2 is a schematic diagram of the construction of a first embodiment of a pile top locating assembly;
figure 3 is a schematic structural view of a second embodiment of a pile top locating assembly;
FIG. 4 is a side view of one embodiment of a bottom positioning assembly on a core pile;
fig. 5 is a bottom view of an embodiment of a pile bottom positioning assembly on an outer pile.
In the figure 1, a pile top positioning component; 11. an upper abutting end; 2. a pile bottom positioning assembly; 21. a lower abutting end; 22. a fixation site; 3. core piles; 4. a first arc segment; 5. a second arc segment; 6. a third arc segment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment of the utility model provides a set up on the core pile for make the core pile plant with outer collinear position department of stake axis, prevent that the core pile is crooked, influence the precast pile positioner of compound stake bearing capacity.
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 5.
As shown in fig. 1-5, the present embodiment provides a precast pile positioning device, which at least comprises a pile top positioning assembly 1 and a pile bottom positioning assembly 2, wherein: pile bolck locating component 1 and pile bottom locating component 2 all include three butt end at least, and the horizontal projection of all butt ends all is located outside core pile 3, and the horizontal distance of all butt ends to 3 axis of core pile equals, and the butt end is used for the outer stake pore wall of butt in order to implant core pile 3 with the position of outer stake axis collineation.
Wherein, still can set up the locating component the same with arbitrary structure of pile top locating component 1 or pile bottom locating component 2 between the top and the bottom of core stake 3, each locating component sets up the formation a plurality of locating units at the interval in the vertical direction of core stake 3, guarantees the axis collineation setting of core stake 3 and outer stake.
The three butt joint ends are arranged in a non-collinear manner, a circle center is determined according to three non-collinear points, and the core pile 3 is arranged in a coaxial manner when being implanted into an outer pile on the basis of a structure that horizontal projections of all the butt joint ends are located outside the core pile 3 and horizontal distances from all the butt joint ends to the central axis of the core pile 3 are equal.
When constructing composite pile, after the outer pile construction was accomplished, at the top installation pile bolck locating component 1 of core stake 3, locating component 2 at the bottom of the bottom installation pile bolck of core stake 3, through having all butt end cooperations of above-mentioned structure on pile bolck locating component 1 and the pile bolck locating component 2, implant core stake 3 with the position department of outer pile coaxial line, can effectively guarantee the axis collineation setting of core stake 3 and outer stake. The precast pile positioning device is simple in structure, low in cost and easy to operate, and the formed composite pile (the outer pile and the core pile 3) is good in construction quality, stable in structure and strong in bearing capacity.
As an alternative embodiment, the pile top positioning assembly 1 and the pile bottom positioning assembly 2 include fixing portions for fixing with the end plate of the core pile 3, and the fixing portions are attached to the plane of the end plate.
The fixing part and the corresponding abutting end are connected into a whole, as shown in fig. 1, the fixing part in the pile top positioning component 1 is the part located on the pile top of the core pile 3, and as shown in fig. 4, the fixing part 22 on the pile bottom positioning component 2 is the part located on the pile bottom of the core pile 3. The butt joint end can be welded on the pile top end plate or the pile bottom end plate through the fixing part, and the stability of the connecting structure is guaranteed.
The pile top locating component 1 and the pile bottom locating component 2 in the embodiment have the same or different structures. The pile top positioning element 1 and the pile bottom positioning element 2 each comprise the above-mentioned abutting end and the above-mentioned fixing portion, and hereinafter, the abutting end of the pile top positioning element 1 will be referred to as an upper abutting end, and the abutting end of the pile bottom positioning element 2 will be referred to as a lower abutting end.
Two specific embodiments of the pile top locating assembly 1 are given below:
example 1
Referring to fig. 3, the pile top positioning assembly 1 is an annular plate disposed coaxially with the core pile 3, and a plurality of upper abutment ends 11 are formed at respective portions on the outer periphery of the annular plate.
The annular plate is a plate-shaped structure which is coaxial with the core pile 3, and each point on the periphery of the annular plate forms a plurality of upper abutting ends 11, in other words, the periphery of the annular plate is used for limiting the core pile 3 at a position which is collinear with the central axis of the outer pile when the core pile 3 is implanted into the outer pile drill hole, so that the core pile 3 is prevented from being inclined.
Example 2
The present embodiment differs from the above-described embodiments in that, referring to fig. 1 and 2, the pile top positioning assembly 1 is a structure formed by cutting at least three arc plates at intervals from a circular plate, and three upper abutting ends 11 are arranged at equal intervals or at non-equal intervals around the circle center of the circular plate.
Through the structure of cutting three sections of circular arc plates at intervals on the annular plate, referring to fig. 2, a first circular arc section 4, a second circular arc section 5 and a third circular arc section 6 are cut on the annular plate to form three upper abutting ends 11 extending out of the core pile 3 in the horizontal direction, the core pile 3 and the central axis of the outer pile are collinear at multiple positions, and the core pile 3 is prevented from being inclined.
Compared with the pile top positioning assembly 1 in the embodiment 1, the upper abutting ends in the pile top positioning assembly 1 are arranged at intervals, so that a grout upward-returning space is reserved, and the grout can smoothly return upward when the core pile 3 is implanted.
The core pile 3 is a pretensioned high-strength prestressed concrete pipe pile or a steel pipe pile.
As an optional implementation manner, in the core pile 3 of the present embodiment, the core pile 3 is a hollow circular pile, as shown in fig. 3, the inner diameter of the annular plate is larger than the aperture of the core pile 3 and smaller than the outer diameter of the core pile 3, a certain space is reserved for welding the annular plate on the end plate of the core pile 3, and when the annular plate is aligned with the aperture of the core pile 3, no extra space is needed to weld the annular plate; the outer diameter of the annular plate is larger than that of the core pile 3, so that each peripheral point (abutting end) of the annular plate extends out of the core pile 3 and is used for abutting against the inner wall of a drilled hole of the outer pile when the annular plate is implanted into the outer pile, and the core pile 3 is prevented from being inclined; or, core pile 3 is hollow square pile, and the annular plate internal diameter is greater than 3 apertures of core pile and is less than 3 length of side of core pile, and the annular plate external diameter is greater than 3 diagonal length of core pile, and the effect when this structure is the circular pile with core pile 3 is the same.
And under above-mentioned two kinds of circumstances, its external diameter size all satisfies when the annular slab is located core pile 3 that the annular slab can stretch into to the outer pile drilling in for 3 core piles butt drilling inner walls when the outer pile drilling inner wall direction is crooked, guarantee that core pile 3 is vertical arranges.
Because when the core pile 3 is implanted into the outer pile drill hole, the bottom of the core pile 3 is first inserted into the drill hole, in order to reduce the downward resistance of the core pile 3 and reserve the slurry upward-returning space, as an optional implementation manner, all the lower abutting ends 21 in the pile bottom positioning component 2 in the embodiment are arranged at intervals, and a slurry returning gap allowing slurry to return upward is formed between adjacent lower abutting ends 21.
All lower butt ends 21 that the interval was arranged in pile bottom locating component 2 have reduced core pile 3 resistance that moves down on the basis of guaranteeing to set up core pile 3 and outer pile coaxial line, have reserved the space of returning to the top for the thick liquid, and the thick liquid is gone upward in the space of returning the liquid that forms between the butt end, prevents that the thick liquid can only go upward in drilling by core pile 3, and the resistance is great, and core pile 3 difficulty of moving down.
In order to further reduce the resistance to downward movement of the core pile 3, in the present embodiment, as an alternative, in the pile bottom positioning member 2, all the lower abutment ends 21 are bent upward at least near the outer pile hole wall to reduce the resistance to downward movement.
The tail end of the lower butt joint end 21 in the pile bottom positioning component 2 is bent upwards, so that the pile bottom positioning device cannot penetrate into the soil body of the wall of the outer pile hole when the core pile 3 is implanted.
As a specific implementation manner, referring to fig. 4 and 5, the pile bottom positioning assembly 2 includes four positioning ribs, which may be reinforcing steel bars, the positioning ribs are uniformly spaced around the center of the cross section of the core pile 3 and are in a cross shape, and all the positioning ribs are arranged along the radial direction of the core pile 3, and the length and the shape of the positioning ribs are the same.
The cross-shaped positioning rib is simple in structure and convenient to set, and as shown in fig. 4, the fixed part of the positioning rib is welded on the end plate at the bottom end of the core pile 3.
As an alternative embodiment, referring to fig. 4 and 5, one end of each positioning rib is aligned with the inner wall of the core pile 3, and the other end is bent toward the pile top.
The pile bottom positioning assembly 2 with the structure is simple in structure, and the four positioning ribs are uniformly arranged around the circle center of the cross section of the pile bottom of the core pile 3, so that the coaxial arrangement of the core pile 3 and the outer pile is ensured.
The precast pile positioning device of this embodiment sets up on the core pile 3 of composite pile, can make core pile 3 and outer pile keep the coaxial line setting, and the center of 3 horizontal cross sections of core pile is concentric with the centre of a circle of outer pile horizontal cross section promptly, when the outer pile straightness that hangs down satisfies the designing requirement, guarantees that core pile 3 also can satisfy perpendicular requirement. The pile bottom positioning component 2 and the pile top positioning component 1 of the precast pile positioning device leave a slurry upward-returning space, so that the slurry can smoothly return upward when the core pile 3 is implanted. The tail end of the positioning rib of the pile bottom positioning component 2 is bent upwards, so that the pile bottom positioning component 2 can not penetrate into a hole wall soil body when the core pile 3 is implanted.
Example 3
This embodiment provides a core pile 3, including 3 bodies of core pile and above-mentioned precast pile positioner, pile top locating component 1 is fixed in 3 body upper ends of core pile, and pile bottom locating component 2 is fixed in 3 body lower extremes of core pile. The core pile 3 can be provided with a positioning component with the same structure as any one of the pile top positioning component 1 and the pile bottom positioning component 2 at the position between the pile top and the pile bottom.
The installation and the use of the precast pile positioning device are described by taking the construction of the cement-soil composite pipe pile as an example as follows:
1. firstly, a precast pile positioning device is manufactured. According to the drilling diameter of the outer pile, the pile top positioning assembly 1 is manufactured, as shown in fig. 2, an annular steel plate is adopted as the annular plate, the outer diameter of the annular steel plate is 20mm smaller than the drilling diameter, and the inner diameter of the annular steel plate is 10mm larger than the inner diameter of the core pile 3; and (3) manufacturing a pile bottom positioning assembly 2, manufacturing four reinforcing steel bars respectively, wherein the straight section length of each reinforcing steel bar is the wall thickness of the tubular pile, and the horizontal projection length of the upward bending section is 10mm away from the 3 hole wall of the core pile.
2. And (3) drilling a hole at the position of the outer pile by using a long spiral drilling machine, lifting the drill rod while rotating and spraying grout after drilling to the designed elevation, stopping spraying grout after reaching the designed elevation of the pile top, and lifting the drill rod out of the hole.
3. And implanting the core pile 3 by adopting an internal pressure type static pressure machine. And (3) placing the static pressure machine, after clamping the core pile 3, welding a pile bottom positioning assembly 2 on the pile bottom end plate of the core pile 3 when the pile bottom of the core pile 3 is about 1.0m away from the ground of the hole opening, namely 4 manufactured steel bars in the step 1. The 4 steel bars are all arranged in a cross shape along the diameter direction of the pile and are mutually vertical. One end of the straight section of reinforcing bar aligns with 3 inner wall edges of core pile, and the terminal distance pore wall 10mm of the section of bending on the reinforcing bar.
4. After the pile bottom positioning assembly 2 is welded, the core pile 3 is implanted into the hole under the holding pressure action of the static pressure machine. When the distance between the pile top of the core pile 3 and the ground of the orifice is about 1.0m, the static pressure machine stops downwards implanting the core pile 3, the pile top positioning component 1 is welded on the end plate of the pile top of the core pile 3, and the pile top positioning component 1 and the central axis of the pipe pile are arranged in a collinear way. After the pile top positioning assembly 1 is welded, the static pressure machine continues to implant the core pile 3.
5. When design pile bolck elevation is less than drill way ground elevation, 3 stake construction processes are planted to core stake, 3 stake ends of core stake are less than when pressing from both sides the pile box bottom portion, must use steel pile follower through the static pressure machine, and pile follower plane is closely continuous with 3 end plate planes at the core stake, send core stake 3 to design elevation, then propose pile follower, accomplish the construction of cement soil composite pipe stake.
The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a precast pile positioner which characterized in that includes pile top locating component and pile bottom locating component at least, wherein:
pile top locating component with locating component all includes three butt end at least at the bottom of the stake, all the horizontal projection of butt end all is located outside the core pile, and all the butt end extremely the horizontal distance of core pile axis equals, the butt end be used for butt outer pile pore wall in order with the core pile implant with the collinear position of outer pile axis.
2. The precast pile positioning device of claim 1, wherein the pile top positioning component and the pile bottom positioning component comprise fixing parts for fixing with the core pile end plate, and the fixing parts are attached to the end plate plane.
3. A precast pile positioning device according to claim 1, wherein the pile top positioning member is an annular plate disposed coaxially with the core pile, each portion on the outer periphery of the annular plate forming a plurality of the abutment ends.
4. A precast pile positioning device according to claim 1, wherein the pile top positioning component is a structure formed by cutting at least three circular arc plates at intervals from an annular plate, and the three abutting ends are arranged at equal intervals or at non-equal intervals around the circle center of the annular plate.
5. A precast pile positioning device according to claim 3 or 4, wherein the core pile is a hollow round pile, the annular plate inner diameter is larger than the core pile aperture diameter and smaller than the core pile outer diameter, and the annular plate outer diameter is larger than the core pile outer diameter; or the core pile is a hollow square pile, the inner diameter of the annular plate is larger than the aperture diameter of the core pile and smaller than the side length of the core pile, and the outer diameter of the annular plate is larger than the length of the diagonal line of the core pile;
and the annular plate can extend into the outer pile drill hole when being positioned on the core pile.
6. A precast pile positioning device according to any one of claims 1 to 4, wherein all of the abutting ends in the pile bottom positioning component are spaced apart, and a return gap allowing slurry to return upward exists between adjacent abutting ends.
7. A precast pile positioning device according to any one of claims 1-4, wherein in the pile bottom positioning assembly, all the abutting ends are bent upward at least near the outer pile hole wall to reduce downward resistance.
8. A precast pile positioning device according to any one of claims 1-4, wherein the pile bottom positioning assembly comprises four positioning ribs, the positioning ribs are uniformly arranged around the center of the cross section of the core pile at intervals, all the positioning ribs are arranged along the radial direction of the core pile, and the length and the shape of the positioning ribs are the same.
9. A precast pile positioning device according to claim 8, wherein all the positioning ribs are arranged with one end aligned with the inner wall of the core pile and the other end bent toward the pile top.
10. A core pile comprising a core pile body and a precast pile positioning device according to any one of claims 1 to 9, wherein the pile top positioning assembly is fixed to the upper end of the core pile body, and the pile bottom positioning assembly is fixed to the lower end of the core pile body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120365147.6U CN214614068U (en) | 2021-02-09 | 2021-02-09 | Precast pile positioning device and core pile with same |
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| CN202120365147.6U CN214614068U (en) | 2021-02-09 | 2021-02-09 | Precast pile positioning device and core pile with same |
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| CN214614068U true CN214614068U (en) | 2021-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411696A (en) * | 2022-01-21 | 2022-04-29 | 北京市第三建筑工程有限公司 | Construction method of cement-soil composite pipe pile in dense sand-gravel layer |
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2021
- 2021-02-09 CN CN202120365147.6U patent/CN214614068U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411696A (en) * | 2022-01-21 | 2022-04-29 | 北京市第三建筑工程有限公司 | Construction method of cement-soil composite pipe pile in dense sand-gravel layer |
| CN114411696B (en) * | 2022-01-21 | 2022-12-13 | 北京市第三建筑工程有限公司 | Construction method of cement-soil composite pipe pile in dense sand-gravel layer |
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Address after: 100085 building 6, courtyard a 1, Xisanqi, Haidian District, Beijing Patentee after: Beijing Blue Ocean Construction Co.,Ltd. Country or region after: China Patentee after: Shenzhen traffic utility construction center Address before: 101500 room 106-200, building 2, courtyard 8, Xingsheng South Road, Miyun District, Beijing Patentee before: BEIJING RONGCHUANG GEOTECHNICAL ENGINEERING Co.,Ltd. Country or region before: China Patentee before: Shenzhen traffic utility construction center |