CN214787196U - Concrete bored concrete pile expanding equipment - Google Patents
Concrete bored concrete pile expanding equipment Download PDFInfo
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- CN214787196U CN214787196U CN202120432281.3U CN202120432281U CN214787196U CN 214787196 U CN214787196 U CN 214787196U CN 202120432281 U CN202120432281 U CN 202120432281U CN 214787196 U CN214787196 U CN 214787196U
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Abstract
The utility model provides a bored concrete pile hole enlargement equipment, include: the outer sleeve part and the inner sleeve part are suitable for being mutually sleeved with each other; wherein, still include: and the ground breaking structure is arranged on the lower end face of the outer sleeve part, and a gap for concrete to pass through along the axial direction of the outer sleeve part is formed between the ground breaking structure and the outer sleeve part, wherein the ground breaking structure is a structure with a wide upper part and a narrow lower part.
Description
Technical Field
The utility model relates to a diameter enlargement equipment of bored concrete pile.
Background
In foundation construction, in order to fill the bearing capacity of a pile, a radially enlarged structure is formed at the bottom of the pile through construction; however, in order to further increase the bearing capacity of the pile body, chinese patent documents CN 107794918A, CN 102444120a and CN111395312A disclose a construction method of a cast-in-place pile in which a radially enlarged structure is formed at both the bottom and the body of the pile, respectively, and a pile body constructed by the method. The construction method described in this patent document is to form the radially enlarged structure by ramming from bottom to top in the order of forming the radially enlarged structure. The prior art above discloses expanding devices, i.e. inner and outer sleeves that are nested with each other, the working end of the bottom of the outer sleeve is completely through, the implementation of the ground breaking action depends completely on the peripheral structure of the outer sleeve and the tamping surface of the working end of the inner sleeve; when the pipe is sunk after being sleeved, the effect is that the bottom plane of a column body is rammed, the soil breaking capacity is poor, and therefore the construction efficiency is low.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in how to propose a construction method that the ability of breaking ground is stronger and is used for bored concrete pile hole enlargement equipment and bored concrete pile.
The utility model provides a diameter enlargement equipment of bored concrete pile, include: an outer sleeve part, a first sleeve part and a second sleeve part,
the inner sleeve part is suitable for being sleeved with the outer sleeve part; wherein, still include: and the ground breaking structure is arranged on the lower end face of the outer sleeve part, and a gap for concrete to pass through along the axial direction of the outer sleeve part is formed between the ground breaking structure and the outer sleeve part, wherein the ground breaking structure is a structure with a wide upper part and a narrow lower part.
The diameter expanding equipment for the concrete cast-in-place pile comprises a casing, wherein the casing is provided with an outer sleeve part, and the outer sleeve part is provided with a lower end face.
The diameter expanding equipment for the cast-in-place concrete pile comprises a V-shaped assembly, a first V-shaped plate part and a second V-shaped plate part, wherein the first V-shaped plate part and the second V-shaped plate part are respectively and radially arranged on the lower end face of the outer sleeve part in a spanning mode.
In the diameter expanding equipment for the cast-in-place concrete pile, the V-shaped assembly is fixedly connected with the inner wall of the outer sleeve part through the outer sleeve hoop, and the upper end face of the V-shaped assembly is of a horizontal step structure and is axially matched with the lower end face of the outer sleeve part to bear force; and the outer diameter of the inner tube head at the lower end of the inner tube component is larger than the inner diameter of the outer tube hoop.
When the inner sleeve component and the outer sleeve component are completely sleeved, the lower end face of the inner pipe head is attached to the upper end face of the outer pipe hoop, and bottom sealing is achieved.
The utility model also provides a construction method of concrete bored concrete pile, including following step:
a. adopting any one of the expanding devices to form a hole at the pile position, and sinking the hole to a first expanding position;
b. pouring the flow plastic concrete into the first diameter expanding position, and applying a vertical downward acting force to the flow plastic concrete at the first diameter expanding position by operating the diameter expanding equipment to radially extrude and expand the flow plastic concrete to form a first diameter expanding structure;
c. applying a downward acting force to the flow plastic concrete at the first diameter expansion position by using the diameter expansion equipment, and penetrating through a flow plastic concrete body while radially extruding and expanding the flow plastic concrete;
d. sinking the expanding device downwards to a second expanding position;
e. pouring the liquid plastic concrete into the second expanding position, and applying a vertical downward acting force to the liquid plastic concrete at the second expanding position by operating the pore-forming device to radially extrude and expand the liquid plastic concrete to form a second expanding structure;
f. and e, repeating the steps c to e until the construction of the bottom expanding structure at the bottom expanding position is completed, and pouring the flow-plastic concrete to complete the pile body construction of the cast-in-place pile.
The construction method of the cast-in-place concrete pile further comprises a step of inserting a reinforcement cage into the flow plastic concrete after the step f.
In the construction method of the concrete cast-in-place pile, the outer sleeve member at least includes a portion with a circular or non-circular cross section, wherein the non-circular shape includes a triangle, a quadrangle, a polygon or a special shape.
In the construction method of the cast-in-place concrete pile, the step of applying a vertically downward acting force to the cast-in-place concrete at the first diameter expansion position by operating the diameter expansion device includes pulling up the outer sleeve component and pressing or hammering the inner sleeve component to apply a vertically downward acting force to the cast-in-place concrete.
The utility model discloses above-mentioned technical scheme has following advantage for prior art:
1. the utility model discloses an expanding equipment, wherein, include: and the ground breaking structure is arranged on the lower end face of the outer sleeve part, and a gap for concrete to pass through along the axial direction of the outer sleeve part is formed between the ground breaking structure and the outer sleeve part, wherein the ground breaking structure is a structure with a wide upper part and a narrow lower part. The lower end face of the outer sleeve part is provided with the ground breaking structure which is wide at the top and narrow at the bottom, so that when the outer sleeve and the inner sleeve which are mutually sleeved are adopted for forming holes, ground breaking and pipe sinking are realized more easily.
2. The ground breaking structure comprises at least one V-shaped assembly spanning the lower end face of the outer sleeve part. The adoption of the V-shaped component can greatly improve the soil breaking capacity.
3. The V-shaped assembly comprises a first V-shaped plate part and a second V-shaped plate part, and the first V-shaped plate part and the second V-shaped plate part are respectively and radially arranged on the lower end face of the outer sleeve part in a spanning mode. The V-shaped plate-shaped component can reserve a gap for the concrete to pass through axially to the maximum extent; the two V-shaped plate-shaped parts can increase the acting soil breaking area and take the soil breaking capacity into consideration.
4. The V-shaped assembly is fixedly connected with the inner wall of the outer sleeve part, and the upper end face of the V-shaped assembly is of a horizontal step structure and is axially matched with the lower end face of the outer sleeve part to bear force. By adopting the structure design, the axial downward acting force of the outer sleeve part can be better transmitted to the lower ground breaking structure.
5. The V-shaped assembly is fixedly connected with the inner wall of the outer sleeve part through an outer sleeve hoop, and the upper end face of the V-shaped assembly is of a horizontal step structure and is axially matched with the lower end face of the outer sleeve part to bear force; and the outer diameter of the inner tube head at the lower end of the inner tube component is larger than the inner diameter of the outer tube hoop. When the inner sleeve component and the outer sleeve component are completely sleeved, the lower end face of the inner tube head is attached to the upper end face of the outer tube hoop, and bottom sealing is achieved. By adopting the design, soil or slurry can be effectively prevented from entering the inner wall of the outer pipe part through the gap between the inner and outer sleeve parts when the inner and outer sleeve parts are sleeved and tamped, and further, the soil or slurry is prevented from entering the concrete when the concrete is poured, so that the quality of a pile body is prevented from being influenced.
6. The utility model discloses a construction method of concrete bored concrete pile, wherein, the first hole enlargement position that expands at first is not the bottom position of bored concrete pile, namely, the difference with the prior art lies in that the utility model discloses expand the hole preferentially at the upper portion position of pile body, go on according to the hole enlargement order from top to bottom; in order to realize the expanding sequence, the utility model adopts the mode that the expanding device penetrates through the first expanding structure after the first expanding structure is completed, so that the flow-plastic concrete of the first expanding structure is kept at the first expanding position, and the vertical position of the first expanding structure is not influenced at least when the second expanding position is radially constructed after the first expanding structure is penetrated; and further effectively avoiding the situation that the position of the radial expansion structure is easy to vertically shift relative to the designed position and the forming size cannot meet the design requirement in the process of adopting the flow-plastic concrete to carry out multi-section radial expansion structure construction on the cast-in-place pile. Through the utility model discloses a construction method can guarantee the vertical bearing capacity and the resistance to plucking of bored concrete pile effectively.
7. The steel reinforcement cage is additionally arranged in the pile body, so that the uplift resistance of the pile body can be effectively improved.
8. The outer sleeve part at least comprises a part with a circular or non-circular cross section outline, wherein the non-circular shape comprises a triangle or a polygon, and can meet the design requirements of different pile body shapes.
Drawings
Fig. 1 is a schematic view of one embodiment of the expanding device of the present invention;
fig. 2 is a schematic view of one embodiment of the expanding device of the present invention;
Detailed Description
As shown in fig. 1 and 2, the embodiment of the utility model discloses a diameter expanding equipment of concrete bored concrete pile, include: the outer sleeve part 1 and the inner sleeve part 2 are suitable for being mutually sleeved with the outer sleeve part 1; wherein, still include: and the ground breaking structure 3 is arranged on the lower end face of the outer sleeve part 1, and a gap for concrete to pass through along the axial direction of the outer sleeve part 1 exists between the ground breaking structure 3 and the outer sleeve part 1, wherein the ground breaking structure 3 is a structure with a wide upper part and a narrow lower part. In one embodiment, the ground breaking structure comprises at least one V-shaped component spanning the lower end surface of the outer sleeve part. The lower end of the inner sleeve pipe part is provided with an inner pipe head for ramming a soil body.
The V-shaped assembly comprises a first V-shaped plate part 4 and a second V-shaped plate part 5, and the first V-shaped plate part 4 and the second V-shaped plate part 5 radially span the lower end face of the outer sleeve part 1 respectively. The V-shaped assembly is characterized in that the V-shaped assembly is a first V-shaped plate part 4 and a second V-shaped plate part 5 which are fixedly connected with the inner wall of the outer sleeve part 1 respectively, and the upper end face of the V-shaped assembly is of a horizontal step structure 6 and is axially matched with the lower end face of the outer sleeve part 1 to bear force. As a preferred embodiment, an outer pipe clamp 8 is arranged on the upper end face of the V-shaped assembly, and the V-shaped assembly is mounted on the lower end face of the outer sleeve part by connecting the outer wall of the outer pipe clamp 8 with the inner wall of the outer sleeve part. The outer diameter of the inner tube head 7 at the lower end of the inner tube part is larger than the inner diameter of the outer tube hoop. When the inner sleeve component and the outer sleeve component are completely sleeved, the lower end face of the inner tube head is attached to the upper end face of the outer tube hoop, and bottom sealing is achieved.
Example 2
The utility model provides a construction method of concrete bored concrete pile, including following step:
a. adopting the expanding equipment of the embodiment 1 to form a hole at a pile position and sinking to a first expanding position;
b. pouring the flow plastic concrete into the first diameter expanding position, and applying a vertical downward acting force to the flow plastic concrete at the first diameter expanding position by operating the diameter expanding equipment to radially extrude and expand the flow plastic concrete to form a first diameter expanding structure;
c. applying a downward acting force to the flow plastic concrete at the first diameter expansion position by using the diameter expansion equipment, and penetrating through a flow plastic concrete body while radially extruding and expanding the flow plastic concrete;
d. sinking the expanding device downwards to a second expanding position;
e. pouring the liquid plastic concrete into the second expanding position, and applying a vertical downward acting force to the liquid plastic concrete at the second expanding position by operating the pore-forming device to radially extrude and expand the liquid plastic concrete to form a second expanding structure;
f. and e, repeating the steps c to e until the construction of the bottom expanding structure at the bottom expanding position is completed, and pouring the flow-plastic concrete to complete the pile body construction of the cast-in-place pile.
The utility model discloses a construction method of multistage hole enlargement concrete bored concrete pile, wherein, the first hole enlargement position that expands at first is not for the bottom position of bored concrete pile, promptly, the difference with prior art lies in the utility model discloses expand diameter at the upper portion position of pile body preferentially, according to the hole enlargement order of top to bottom; in order to realize the expanding sequence, the utility model adopts the mode that the expanding device penetrates through the first expanding structure after the first expanding structure is completed, so that the flow-plastic concrete of the first expanding structure is kept at the first expanding position, and the vertical position of the first expanding structure is not influenced at least when the second expanding position is radially constructed after the first expanding structure is penetrated; and further effectively avoiding the situation that the position of the radial expansion structure is easy to vertically shift relative to the designed position and the forming size cannot meet the design requirement in the process of adopting the flow-plastic concrete to carry out multi-section radial expansion structure construction on the cast-in-place pile. Through the utility model discloses a construction method can guarantee the vertical bearing capacity and the resistance to plucking of bored concrete pile effectively.
As a further embodiment, after the step f, the method further comprises the step of inserting a reinforcement cage into the flow-molded concrete. The mode of inserting the reinforcement cage is vibration insertion.
According to different design requirements of the pile body, the shape of the cross-sectional outer contour of the pile body can comprise various shapes, such as a circle or a non-circle, wherein the non-circle comprises a triangle or a polygon, therefore, in order to meet the design requirements, the outer sleeve part at least comprises a part with the cross-sectional outer contour being a circle or a non-circle, the circle or the non-circle is not required to be formed at any cross section of the whole outer sleeve part, and preferably, the non-circle can comprise a quadrangle, a polygon or a special shape.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (5)
1. A concrete bored pile expanding apparatus, comprising:
an outer sleeve part, a first sleeve part and a second sleeve part,
the inner sleeve part is suitable for being sleeved with the outer sleeve part;
it is characterized by also comprising:
and the ground breaking structure is arranged on the lower end face of the outer sleeve part, and a gap for concrete to pass through along the axial direction of the outer sleeve part is formed between the ground breaking structure and the outer sleeve part, wherein the ground breaking structure is a structure with a wide upper part and a narrow lower part.
2. The concrete cast-in-place pile hole expanding device according to claim 1, characterized in that: the ground breaking structure comprises at least one V-shaped assembly which spans the lower end face of the outer sleeve part.
3. The concrete cast-in-place pile hole expanding device according to claim 2, characterized in that: the V-shaped assembly comprises a first V-shaped plate part and a second V-shaped plate part, and the first V-shaped plate part and the second V-shaped plate part are respectively and radially arranged on the lower end face of the outer sleeve part in a spanning mode.
4. The concrete cast-in-place pile hole expanding apparatus according to claim 2 or 3, characterized in that:
the V-shaped assembly is fixedly connected with the inner wall of the outer sleeve part through an outer sleeve hoop, and the upper end face of the V-shaped assembly is of a horizontal step structure and is axially matched with the lower end face of the outer sleeve part to bear force; and the outer diameter of the inner tube head at the lower end of the inner tube component is larger than the inner diameter of the outer tube hoop.
5. The concrete cast-in-place pile hole expanding device according to claim 4, wherein: when the inner sleeve component and the outer sleeve component are completely sleeved, the lower end face of the inner tube head is attached to the upper end face of the outer tube hoop, and bottom sealing is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120432281.3U CN214787196U (en) | 2021-02-28 | 2021-02-28 | Concrete bored concrete pile expanding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120432281.3U CN214787196U (en) | 2021-02-28 | 2021-02-28 | Concrete bored concrete pile expanding equipment |
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| Publication Number | Publication Date |
|---|---|
| CN214787196U true CN214787196U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120432281.3U Active CN214787196U (en) | 2021-02-28 | 2021-02-28 | Concrete bored concrete pile expanding equipment |
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| CN (1) | CN214787196U (en) |
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2021
- 2021-02-28 CN CN202120432281.3U patent/CN214787196U/en active Active
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