CN220908369U - Rectangular hollow support pile made of steel pipe concrete - Google Patents
Rectangular hollow support pile made of steel pipe concrete Download PDFInfo
- Publication number
- CN220908369U CN220908369U CN202322337679.0U CN202322337679U CN220908369U CN 220908369 U CN220908369 U CN 220908369U CN 202322337679 U CN202322337679 U CN 202322337679U CN 220908369 U CN220908369 U CN 220908369U
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- steel tube
- steel pipe
- support pile
- concrete
- steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 111
- 239000010959 steel Substances 0.000 title claims abstract description 111
- 230000002787 reinforcement Effects 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a concrete-filled steel tube rectangular hollow support pile, which comprises a steel tube, wherein the steel tube is formed by surrounding a steel plate, and a cavity is formed in the steel tube; the concrete pile body is prefabricated and formed in a cavity of the steel pipe, and the middle part of the concrete pile body is of a hollow structure; the reinforcement cage is pre-buried in the concrete pile body and comprises a prestressed reinforcement and stirrups spirally winding the prestressed reinforcement; end plates arranged at two ends of the concrete pile body; wherein, the outer side surface of one short side of the steel pipe is provided with at least one matching groove extending for a preset length, and the outer side surface of the other short side corresponding to the groove is provided with a matching bulge; the cross section of the steel pipe is rectangular. According to the utility model, through the arrangement of the matching grooves and the matching protrusions, the connection strength between the support piles is improved, and the tight splicing between the support piles is realized.
Description
Technical Field
The application relates to a building foundation member, and discloses a concrete filled steel tube rectangular hollow support pile.
Background
As high-rise buildings in coastal areas are increasing, it has become a trend to form building foundations by precast piles.
The steel tube concrete rectangular support pile in the prior art is not matched with a connecting member on the pile body, and can not play a role in preventing the support pile from relative displacement or sliding under the action of load.
Disclosure of utility model
The utility model aims to: a rectangular hollow support pile of concrete filled steel tube is provided to solve the above problems existing in the prior art.
The technical scheme is as follows: a concrete-filled steel tube rectangular hollow support pile comprising:
the steel tube is formed by surrounding a steel plate, and a cavity is formed in the steel tube;
The concrete pile body is prefabricated and formed in a cavity of the steel pipe, and the middle part of the concrete pile body is of a hollow structure;
The reinforcement cage is pre-buried in the concrete pile body and comprises a prestressed reinforcement and stirrups spirally winding the prestressed reinforcement;
End plates arranged at two ends of the concrete pile body;
At least one matching groove extending for a preset length is formed in the outer side face of one short side of the steel pipe, and a matching protrusion is formed in the outer side face of the other short side corresponding to the matching groove; the cross section of the steel pipe is rectangular; the cross section of the matching groove is isosceles trapezoid, and the symmetry plane of the matching groove is coplanar with the symmetry plane of the support pile along the length direction;
the inner side and the outer side of the steel pipe are respectively provided with a connecting component for increasing acting force between the steel pipe and concrete and between the steel pipe and soil.
According to one aspect of the application, the matching groove is reserved with a reinforcing steel bar pore canal, and the matching bulge is provided with reinforcing steel bars; the reinforcing steel bars are obliquely arranged with the reinforcing steel bar pore canals, so that at least part of the reinforcing steel bars can be matched with the reinforcing steel bar pore canals when adjacent hollow support piles are connected.
According to one aspect of the application, the connecting member includes anti-friction protrusions, pegs, and internal threads; an anti-friction bulge is arranged on the outer side of the steel pipe; the inner side of the steel pipe is provided with a peg or an internal thread.
According to one aspect of the application, the inner cavity of one end of the steel pipe is provided with a convex groove along the axial direction, and the outer surface of the other end of the steel pipe is provided with a groove along the axial direction, so that a steel pipe joint is formed.
According to one aspect of the application, at least one end of the steel pipe joint is provided with a threaded pull rod and a threaded nut for tightening and fixing the two steel pipe joints.
According to one aspect of the application, the pile further comprises an enlarged end head which is sleeved at one end of the support pile and is formed by casting concrete, and the cross section of the enlarged end head is rectangular.
According to one aspect of the application, the ratio of the height of the enlarged head to the length of the short side of the stake is a predetermined value;
The length of the short side of the enlarged head is 1.75 times of that of the support pile, and the length of the long side of the enlarged head is 1.75 times of that of the support pile;
the outer side of the steel plate at the support pile of the enlarged end socket is provided with a peg or a thread.
According to one aspect of the application, the anti-friction protrusions are symmetrically distributed along the central axis of the support pile; the friction-resistant protrusions are welded or integrally formed on the outer wall of the steel pipe.
According to one aspect of the application, the peg is L-shaped, one end of the peg is welded on the inner wall of the steel pipe, and the other end extends to the central axis direction of the steel pipe for a preset distance;
Or the peg is U-shaped, two ends of the peg are welded on the inner wall of the steel pipe respectively, and the area of a connecting channel formed by the peg and the inner wall of the steel pipe is larger than a preset value.
According to one aspect of the application, a predetermined number of anchoring bars are provided at one end of the enlarged head.
The beneficial effects are that: according to the application, through the arrangement of the matching grooves and the matching protrusions, the connection strength between the support piles is improved, and the tight splicing between the support piles is realized.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic cross-sectional structure of the present utility model.
Fig. 3 is a schematic view of the structure of the concave-convex groove with cross section of the present utility model.
FIG. 4 is a schematic cross-sectional view of an anti-friction protrusion structure of the present utility model.
Fig. 5 is a schematic view of the structure of the peg in the steel tube of the present utility model.
Fig. 6 is a schematic view of the structure of the enlarged footing of the present utility model.
Fig. 7 is a schematic view of the connection structure of the present utility model.
Detailed Description
In this embodiment, as shown in fig. 1, the steel pipe concrete rectangular hollow support pile is composed of a steel pipe, a concrete pile body, a reinforcement cage and an end plate. Wherein the steel plate 1 surrounds and forms a steel pipe, a cavity is formed in the steel pipe, and the cross section of the steel pipe is rectangular; the concrete pile body is prefabricated and formed in the cavity of the steel pipe, the cross section of the concrete pile body is rectangular, and the middle part of the concrete pile body is of a hollow structure, as shown in fig. 2; the reinforcement cage is pre-buried in the concrete pile body and comprises a prestressed reinforcement 2 and a stirrup 3 spirally wound around the prestressed reinforcement; the end plates 4 are arranged at two ends of the concrete pile body, as shown in fig. 3, a matching groove 5 is arranged on the outer side surface of one short side of the steel pipe, a steel bar pore canal is reserved in the matching groove, a matching bulge 6 is arranged on the outer side surface of the other short side corresponding to the matching groove, and steel bars 7 are arranged in the matching bulge, wherein the cross section of the matching groove 5 is isosceles trapezoid, and the symmetry surface of the matching groove 5 is coplanar with the symmetry surface of the support pile along the length direction; the reinforcing steel bars 7 are obliquely arranged with the reinforcing steel bar pore canals, so that at least part of reinforcing steel bars can be matched with the reinforcing steel bar pore canals when adjacent hollow support piles are connected.
According to the embodiment, the matched grooves and the matched protrusions are formed on the short sides of the steel pipes, so that the piles are connected in a buckling mode, the connection rigidity and the shear strength are increased, the reinforced bar pore channels are reserved in the matched grooves, the reinforced bars are arranged in the matched protrusions, the reinforced bar connection is formed between the piles, and the connection strength and the tensile strength are increased.
In a further embodiment, the inner side and the outer side of the steel pipe are respectively provided with connecting members for increasing the acting force between the steel pipe and the concrete and between the steel pipe and the soil, as shown in fig. 4, the outer side of the steel pipe is provided with anti-friction protrusions 8, and the anti-friction protrusions 8 are symmetrically distributed along the central axis of the support pile and welded or integrally formed with the outer wall of the steel pipe. The anti-friction protrusions 8 can improve the bonding performance between the support pile and the soil body, prevent the support pile from slipping or rotating in the pile sinking process, and ensure the perpendicularity and stability of the support pile.
As shown in fig. 5, the inner side of the steel pipe is provided with a peg 9, the peg 9 is a metal piece, the size and the distance are determined according to the specification of the steel pipe and the concrete, wherein the peg can be L-shaped, one end of the peg is welded on the inner wall of the steel pipe, and the other end extends to the direction of the central axis of the steel pipe for a preset distance; the peg can also be U-shaped, and both ends are welded in the inner wall of steel pipe respectively, the peg is greater than the predetermined value with the connecting channel area that the steel pipe inner wall formed. The friction force between the steel pipe and the concrete pile body can be increased through the stud, and the concrete pile body is prevented from sliding or rotating in the steel pipe, so that the overall performance of the support pile is improved.
Further, the inner side of the steel pipe is provided with an internal thread, the internal thread is a spiral groove processed on the inner wall of the steel pipe, the internal thread is used for forming effective mechanical anchoring with the concrete pile body in the steel pipe, the bonding strength between the steel pipe and the concrete pile body is increased, and the pulling resistance of the pile is improved.
In a further embodiment, the pile further comprises an enlarged head 10 which is sleeved at one end of the support pile and is formed by casting concrete 11, and the cross section of the enlarged head is rectangular. Wherein the height of the enlarged footing is limited by the length of the short side of the support pile, the length of the short side of the enlarged footing is 1.75 times of the length of the short side of the support pile, and the length of the long side of the enlarged footing is 1.75 times of the length of the long side of the support pile. As shown in FIG. 6, D1 is the length of the short side of the support pile, D2 is the length of the short side of the enlarged head, H1 is the height of the enlarged head, H1 is 0.5-1 times of D1, and D2 is 1.75 times of D1.
Further, the outer side of the steel plate at the supporting pile of the enlarged end socket is provided with a peg or a thread, and the friction force between the steel pipe and the concrete in the enlarged end can be increased through the peg or the thread.
Further, a predetermined number of anchor bars 12 are arranged at one end of the enlarged head, and stable connection between the support piles and the foundation can be realized through the structure, so that the bearing capacity of the foundation is increased, and the stability and safety of the building are ensured.
In a further embodiment, as shown in fig. 7, an inner cavity at one end of the steel tube is provided with a protruding groove along the axial direction, an outer surface at the other end of the steel tube is provided with a groove along the axial direction, a steel tube joint is formed, at least one end of the steel tube joint is provided with a threaded pull rod and a threaded nut, the grooves of the two steel tube joints are clamped with the protruding groove during use, then the pull rod penetrates through the two steel tube joints and is screwed by the nut, after the pull rod is screwed, axial tension is generated on the two steel tube joints by the pull rod, so that the inner wall and the outer wall of the steel tube are respectively extruded and deformed by the protruding groove and the groove, and locking connection between the steel tubes is realized. Compared with a welded joint, the connection of the steel pipe joint is not easily affected by weather conditions, the construction is stable, the steel pipe joint can be safely installed even in a place where fire is forbidden, the construction time is shortened, and the steel pipe joint is connected and detached and can be repeatedly used.
The specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
Claims (10)
1. A concrete-filled steel tube rectangular hollow support pile comprising:
the steel tube is formed by surrounding a steel plate, and a cavity is formed in the steel tube;
The concrete pile body is prefabricated and formed in a cavity of the steel pipe, and the middle part of the concrete pile body is of a hollow structure;
The reinforcement cage is pre-buried in the concrete pile body and comprises a prestressed reinforcement and stirrups spirally winding the prestressed reinforcement;
End plates arranged at two ends of the concrete pile body;
it is characterized in that the method comprises the steps of,
At least one matching groove extending for a preset length is formed in the outer side face of one short side of the steel pipe, and a matching protrusion is formed in the outer side face of the other short side corresponding to the matching groove; the cross section of the steel pipe is rectangular; the cross section of the matching groove is isosceles trapezoid, and the symmetry plane of the matching groove is coplanar with the symmetry plane of the support pile along the length direction;
the inner side and the outer side of the steel pipe are respectively provided with a connecting component for increasing acting force between the steel pipe and concrete and between the steel pipe and soil.
2. A concrete filled steel tube rectangular hollow support pile according to claim 1, wherein the matching grooves are reserved with reinforcing bar channels, and the matching protrusions are provided with reinforcing bars; the reinforcing steel bars are obliquely arranged with the reinforcing steel bar pore canals, so that at least part of the reinforcing steel bars can be matched with the reinforcing steel bar pore canals when adjacent hollow support piles are connected.
3. A concrete filled steel tube rectangular hollow support pile according to claim 1, wherein the connecting member comprises anti-friction protrusions, pegs and internal threads; an anti-friction bulge is arranged on the outer side of the steel pipe; the inner side of the steel pipe is provided with a peg or an internal thread.
4. A concrete filled steel tube rectangular hollow support pile according to claim 1, wherein the inner cavity of one end of the steel tube is provided with a convex groove along the axial direction, and the outer surface of the other end of the steel tube is provided with a groove along the axial direction, so as to form a steel tube joint.
5. A concrete filled steel tube rectangular hollow support pile according to claim 4, wherein at least one end of the steel tube joints is provided with a threaded pull rod and a threaded nut for tightening and fixing the two steel tube joints.
6. A concrete filled steel tube rectangular hollow support pile according to claim 1, further comprising an enlarged head, the enlarged head being formed by casting concrete and being rectangular in cross section, the enlarged head being journalled at one end of the support pile.
7. A concrete filled steel tube rectangular hollow support pile according to claim 6, wherein the ratio of the height of the enlarged head to the length of the short side of the support pile is a predetermined value;
The length of the short side of the enlarged head is 1.75 times of that of the support pile, and the length of the long side of the enlarged head is 1.75 times of that of the support pile;
the outer side of the steel plate at the support pile of the enlarged end socket is provided with a peg or a thread.
8. A concrete filled steel tube rectangular hollow support pile according to claim 3, wherein the anti-friction protrusions are symmetrically distributed along the central axis of the support pile; the friction-resistant protrusions are welded or integrally formed on the outer wall of the steel pipe.
9. A concrete filled steel tube rectangular hollow support pile according to claim 3, wherein the peg is L-shaped, one end of the peg is welded to the inner wall of the steel tube, and the other end extends a predetermined distance in the direction of the central axis of the steel tube;
Or the peg is U-shaped, two ends of the peg are welded on the inner wall of the steel pipe respectively, and the area of a connecting channel formed by the peg and the inner wall of the steel pipe is larger than a preset value.
10. A concrete filled steel tube rectangular hollow support pile according to claim 6, wherein a predetermined number of anchor bars are provided at one end of the enlarged head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322337679.0U CN220908369U (en) | 2023-08-30 | 2023-08-30 | Rectangular hollow support pile made of steel pipe concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322337679.0U CN220908369U (en) | 2023-08-30 | 2023-08-30 | Rectangular hollow support pile made of steel pipe concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220908369U true CN220908369U (en) | 2024-05-07 |
Family
ID=90918694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322337679.0U Active CN220908369U (en) | 2023-08-30 | 2023-08-30 | Rectangular hollow support pile made of steel pipe concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220908369U (en) |
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2023
- 2023-08-30 CN CN202322337679.0U patent/CN220908369U/en active Active
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