CN202000338U - Hollow square pile of foundation - Google Patents
Hollow square pile of foundation Download PDFInfo
- Publication number
- CN202000338U CN202000338U CN 201120114868 CN201120114868U CN202000338U CN 202000338 U CN202000338 U CN 202000338U CN 201120114868 CN201120114868 CN 201120114868 CN 201120114868 U CN201120114868 U CN 201120114868U CN 202000338 U CN202000338 U CN 202000338U
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- Prior art keywords
- hollow square
- pile
- foundation
- square pile
- end plate
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- 230000002787 reinforcement Effects 0.000 claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000004567 concrete Substances 0.000 claims abstract description 5
- 210000003205 muscle Anatomy 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 229910000754 Wrought iron Inorganic materials 0.000 claims 2
- 238000005452 bending Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 238000010008 shearing Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 4
- 239000011513 prestressed concrete Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a hollow square pile of a foundation, which comprises a reinforcement cage and concrete. The reinforcement cage comprises main reinforcements and stirrups, wherein the stirrups are spirally and continuously welded on the main reinforcements. End plates which are connected with the reinforcement cage are arranged at the two ends of the hollow square pile of the foundation. Casing hoops are arranged at positions at which the end plates are connected with the body of the hollow square pile of the foundation. The reinforcement cage additionally comprises at least two auxiliary reinforcements which are in parallel with the main reinforcements and are welded with the stirrups. The main reinforcements are steel bars and are in parallel with the body contour line of the hollow square pile of the foundation. Upset heads are arranged at positions at which the steel bars are connected with the end plates. The number of the main reinforcements is four to twenty-eight. The hollow square pile of the foundation, which is provided by the utility model, has the advantages of material saving, light dead weight, damage resistance, good pile body ductility, great fabricated pile bearing capacity and good bending resistance and shearing resistance.
Description
Technical Field
The utility model belongs to a building field relates to an improvement of foundation pile shape and structure among the building field. In particular to a hollow square pile of a foundation.
Background
The foundation engineering of the building is the foundation of the building, and the pile foundation has become a foundation form widely adopted for building various buildings, particularly high-rise buildings, heavy plants and structures with special requirements in regions with poor soil quality. The quality of the pile directly influences the quality of the pile foundation, and due to the fact that the quality of the pile foundation is not satisfactory, major brewing accidents are not rare. At present, prestressed concrete pipe piles are most commonly used in coastal cities, buildings of industrial factory buildings, civil buildings, bridges, power stations, wharfs, warehouses and other buildings in China. But the disadvantages are also evident: the prestressed concrete pipe pile has smooth and round appearance, small friction with soil and poor bending resistance when used as a friction pile, particularly poor shearing resistance and tensile resistance of a pile body, hidden danger is buried in a foundation of a building,
although the solid square pile can improve the defects of the tubular pile to a certain extent, the solid square pile consumes more material and has high cost, the bearing capacity of a single pile is relatively low, and the bending (pulling) and shearing resistance performance is poor; the pile material is easy to damage in the transportation and use process, thereby causing the poor durability of the pile body concrete.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hollow square pile of foundation to reduce or avoid the aforementioned problem.
In order to solve the problems, the utility model provides a foundation hollow square pile, which comprises a reinforcement cage and concrete; the reinforcement cage comprises a main reinforcement and a stirrup, and the stirrup is spirally and continuously welded on the main reinforcement; the two ends of the hollow square pile of the foundation are provided with end plates connected with the steel reinforcement cage, the end plates are provided with hoops on the pile body connecting portion of the hollow square pile of the foundation, the steel reinforcement cage further comprises at least two auxiliary reinforcements which are parallel to the main reinforcements and welded and connected with the hoops, the main reinforcements are steel bars, the main reinforcements are parallel to the pile body contour line of the hollow square pile of the foundation, upset heads are arranged at the connecting portions of the steel bars and the end plates, and the number of the main reinforcements is 4-28.
Preferably, the shape of the end plate is the same as that of the pile body of the foundation hollow square pile; the four sides of the end plate are provided with welding grooves with 45-degree inclination angles, a round hole is formed in the center of the end plate, threading holes and tension holes are symmetrically formed between the round hole and the four sides of the end plate, the tension holes are connected with the threading holes through rib grooves respectively, the threading holes in the end plate and the tension holes are in square layout, and the threading holes are counter-sunk holes.
Preferably, the shape of the hollow square pile of the foundation is square, corners on four sides of the square pile are in a stress relief arc shape, the arc radius R1 of one pair of arc corners on the diagonal line of the hollow square pile of the foundation is 30-40mm, the arc radius R2 of the other pair of arc corners is 10-20mm, the length L of the hoop is 110-320 mm, and 2-4 bulges with the radius of 1-3mm are equidistantly arranged on the hoop along the axial direction of the hollow square pile of the foundation.
Preferably, the auxiliary reinforcements are non-prestressed reinforcements and are uniformly distributed on the stirrups on at least two symmetrical edges of the cross section of the pile body, and the number of the auxiliary reinforcements is 2-18.
Preferably, at least one end of the auxiliary rib is not fixedly connected with the end plates at two ends of the pile body of the foundation hollow square pile.
The utility model provides a hollow square pile of basis, owing to adopted hollow shape, consequently economize material, dead weight are light, and pile body four sides corner is stress relief arc, and the pile head is connected with the cuff for the pile material is not fragile when the construction hammering, has improved the product and has become the stake rate.
The utility model provides a hollow square pile of basis, main muscle is rationally distributed, the stirrup is the heliciform welding on the main muscle to have the auxiliary reinforcement parallel with the main muscle, so pile body ductility is good, it is big to become the stake bearing capacity, and bending resistance shear behavior is good.
The utility model provides a hollow square pile of basis, end plate have the welding groove and have also strengthened the fastness of becoming the stake and connecting.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic structural view of a reinforcement cage of a foundation hollow square pile according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the foundation hollow square pile shown in FIG. 1;
FIG. 3 is a top view of the foundation hollow square pile shown in FIG. 1;
fig. 4 is a schematic cross-sectional view of a foundation hollow square pile according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
The structure and the principle of a hollow square foundation pile according to the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a reinforcement cage of a foundation hollow square pile according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the foundation hollow square pile shown in FIG. 1; FIG. 3 is a top view of the foundation hollow square pile shown in FIG. 1; fig. 4 is a schematic cross-sectional view of a basic hollow square pile according to an embodiment of the present invention; for the sake of clarity, the three-axis vertical coordinate system is used as a reference in the drawing, wherein the direction along the coordinate axis z is the axial direction of the base hollow square pile, the direction along the coordinate axis x is the transverse direction of the cross section of the base hollow square pile, and the direction along the coordinate axis y is the longitudinal direction of the cross section of the base hollow square pile.
Specifically, referring to fig. 1, 2 and 4, the foundation hollow square pile comprises a reinforcement cage 1 and concrete 2. The reinforcement cage 1 comprises a main reinforcement 11 and a stirrup 12, and the stirrup 12 of the reinforcement cage is spirally and continuously welded on the main reinforcement 11; the shape of the foundation hollow square pile is square, the pile core is a cylindrical middle hole, the arc radius R1 of a pair of arc angles on the diagonal line of the foundation hollow square pile is 30-40mm, and the arc angle is 90 degrees; the arc radius R2 of the other pair of arc angles is 10-20mm, and the arc angles are also 90 degrees. The corners of four sides of the pile body are arc-shaped for eliminating stress, so that the pile material is not easy to damage when being hammered in building construction. The both ends of the hollow square pile of basis be equipped with end plate 3 that steel reinforcement cage 1 is connected has further strengthened the intensity of pile head.
In another embodiment, the reinforcement cage 1 further includes at least two auxiliary reinforcements 13 parallel to the main reinforcement 11 and welded to the stirrups 12, so as to further enhance the bending resistance and shear resistance of the pile body.
The utility model discloses in, the auxiliary reinforcement 13 is on a parallel with main reinforcement 11 and arranges, and its difference with main reinforcement 11 lies in, and the both ends of main reinforcement 11 are connected respectively on the end plate 3 at the both ends of the hollow square pile of basis for undertake along axial pulling force of pile body or pressure. And the two ends of the auxiliary reinforcement 13 or at least one end is not connected on the end plate 3 for bearing the horizontal shearing force of the pile body, the auxiliary reinforcement is not arranged on the hollow square pile of the foundation in the prior art, and the bending resistance and the shearing resistance are slightly poor compared with the technical scheme of the utility model.
In another embodiment, the auxiliary reinforcement 13 is a non-prestressed reinforcement, and is uniformly distributed on the stirrups 12 on at least two symmetrical edges of the pile body cross section, and the number of the stirrups is 2-18.
In a preferred embodiment, at least one end of the auxiliary reinforcement 13 is not fixedly connected with the end plates 3 at two ends of the pile body, so that the strength of the pile body can be further enhanced, and the bending resistance and the shearing resistance of the pile body can be enhanced.
In another embodiment, the shape of the end plate 3 is the same as the shape of the pile body, and the four sides of the two end plates are provided with welding grooves 32 with inclination angles of 45 degrees, so that the firmness of the pile-forming connection is enhanced.
In another embodiment, the main reinforcement 11 is parallel to the pile body contour.
Referring to fig. 1-4, the center of the end plate 3 is a circular hole with the same diameter as the hole in the pile core, a threading hole 311 and tension holes 313 are symmetrically arranged between the circular hole and four sides, and each tension hole 313 is connected with the threading hole 311 through a rib groove 312.
In another embodiment, the main rib 11 is a steel bar, and the joint of the steel bar and the end plate 3 is provided with a heading, so that the joint of the steel bar and the end plate 3 can be more stable.
In another embodiment, the number of the main ribs 11 is 4-28
In another embodiment, the threading holes 311 and the tension holes 313 on the end plate 3 are arranged in a generally square shape, and the threading holes 311 are countersunk holes, so that damage to the upset heads of the main bars 11 during hammering in construction can be avoided.
In another embodiment, the hoop 4 is provided at the connection part of the end plate 3 and the pile body, so that the strength of the pile head can be further enhanced, and the pile head is prevented from being damaged when hammering in construction.
In another embodiment, the length L of the cuff 4 is 110mm to 320 mm. The hoop 4 is provided with 2-4 bulges with the radius of 1-3mm at equal intervals along the axial direction of the foundation hollow square pile.
The utility model provides a hollow square pile of basis, owing to adopted hollow shape, consequently economize material, dead weight are light, and pile body four sides corner is stress relief arc, and the pile head is connected with the cuff for the pile material is not fragile when the construction hammering, has improved the product and has become the stake rate.
The utility model provides a hollow square pile of basis, main muscle is rationally distributed, the stirrup is the heliciform welding on the main muscle to have the auxiliary reinforcement parallel with the main muscle, so pile body ductility is good, it is big to become the stake bearing capacity, and bending resistance shear behavior is good.
The utility model provides a hollow square pile of basis, end plate have the welding groove and have also strengthened the fastness of becoming the stake and connecting.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (5)
1. A foundation hollow square pile comprises a reinforcement cage (1) and concrete (2); the reinforcement cage (1) is characterized by comprising a main reinforcement (11) and a stirrup (12), wherein the stirrup (12) is spirally and continuously welded on the main reinforcement (11); the both ends of the hollow square pile of basis be equipped with end plate (3) that steel reinforcement cage (1) is connected, end plate (3) with the pile body connecting portion of the hollow square pile of basis are provided with hoop (4), steel reinforcement cage (1) still include at least two with main muscle (11) parallel, with hoop (12) welded connection's auxiliary muscle (13), main muscle (11) are the rod iron, main muscle (11) with the pile body contour line of the hollow square pile of basis is parallel, the rod iron with end plate (3) junction has the heading, main muscle (11) quantity is 4-28.
2. The foundation hollow square pile according to claim 1, wherein the end plate (3) has the same outer shape as the pile body of the foundation hollow square pile; end plate (3) four sides are provided with welding groove (32) at 45 degrees inclinations, and central authorities have a round hole, the round hole with be equipped with through wires hole (311) and tension hole (313) between end plate (3) four sides symmetrically, tension hole (313) separately through muscle groove (312) with through wires hole (311) link to each other, on end plate (3) through wires hole (311) with tension hole (313) are square overall arrangement, through wires hole (311) are the counter sink.
3. The foundation hollow square pile according to claim 2, wherein the foundation hollow square pile has a square shape, corners of the square pile on four sides are in the shape of a stress relief arc, the arc radius R1 of one pair of arc corners on the diagonal of the foundation hollow square pile is 30-40mm, the arc radius R2 of the other pair of arc corners is 10-20mm, the length L of the ferrule (4) is 110-320 mm, and the ferrule (4) is provided with 2-4 bulges with a radius of 1-3mm at equal intervals in the axial direction of the foundation hollow square pile.
4. The hollow square foundation pile of claim 3, wherein the auxiliary reinforcement (13) is non-prestressed reinforcement, and is uniformly distributed on the stirrups (12) on at least two symmetrical sides of the pile body in cross section, and the number of the stirrups is 2-18.
5. The foundation hollow square pile according to claim 4, wherein at least one end of the auxiliary reinforcement (13) is not fixedly connected with the end plates (3) at both ends of the pile body of the foundation hollow square pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120114868 CN202000338U (en) | 2011-04-19 | 2011-04-19 | Hollow square pile of foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120114868 CN202000338U (en) | 2011-04-19 | 2011-04-19 | Hollow square pile of foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000338U true CN202000338U (en) | 2011-10-05 |
Family
ID=44703083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120114868 Expired - Fee Related CN202000338U (en) | 2011-04-19 | 2011-04-19 | Hollow square pile of foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000338U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505680A (en) * | 2011-10-24 | 2012-06-20 | 天津开发区福林发展有限公司 | Prestressed reinforced concrete special-shaped precast pile |
| CN102747728A (en) * | 2012-07-30 | 2012-10-24 | 天津建城基业集团有限公司 | Prestressed centrifugal square pile |
| CN103015406A (en) * | 2012-12-31 | 2013-04-03 | 建华建材（中国）投资有限公司 | Mixed reinforced non-full-circular concrete precast pile |
| CN103590397A (en) * | 2012-08-13 | 2014-02-19 | 上海中技桩业股份有限公司 | Partially prestressed and partially non-prestressed concrete hollow pile |
| CN103883039A (en) * | 2014-02-19 | 2014-06-25 | 浙江杭萧钢构股份有限公司 | Headed-web steel tube bundle combined structure |
-
2011
- 2011-04-19 CN CN 201120114868 patent/CN202000338U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505680A (en) * | 2011-10-24 | 2012-06-20 | 天津开发区福林发展有限公司 | Prestressed reinforced concrete special-shaped precast pile |
| CN102747728A (en) * | 2012-07-30 | 2012-10-24 | 天津建城基业集团有限公司 | Prestressed centrifugal square pile |
| CN103590397A (en) * | 2012-08-13 | 2014-02-19 | 上海中技桩业股份有限公司 | Partially prestressed and partially non-prestressed concrete hollow pile |
| CN103590397B (en) * | 2012-08-13 | 2016-03-30 | 上海中技桩业股份有限公司 | A kind of partial prestressing part non-prestressed concrete hollow square pile |
| CN103015406A (en) * | 2012-12-31 | 2013-04-03 | 建华建材（中国）投资有限公司 | Mixed reinforced non-full-circular concrete precast pile |
| CN103883039A (en) * | 2014-02-19 | 2014-06-25 | 浙江杭萧钢构股份有限公司 | Headed-web steel tube bundle combined structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20180419 |