CN212670582U

CN212670582U - Solid rectangle fender pile of no end plate portion prestressed concrete

Info

Publication number: CN212670582U
Application number: CN202020652175.1U
Authority: CN
Inventors: 郭健
Original assignee: JIANGSU PROVINCIAL ARCHITECTURAL D&R INSTITUTE Ltd
Current assignee: Jiangsu architectural design and Research Institute Co.,Ltd.
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-03-09
Anticipated expiration: 2030-04-26

Abstract

The utility model discloses a solid rectangle fender pile of no end plate portion prestressed concrete. The support pile comprises a long strip-shaped pile body, wherein the section of the pile body is rectangular, and concrete is filled in the pile body; the pile comprises a pile body, a steel hoop sleeve is installed at one end of the pile body, a plurality of prestressed steel bars are buried in the pile body, the prestressed steel bars are in a long strip shape and extend in the same direction with the pile body, and one end of each prestressed steel bar is installed on the steel hoop sleeve. The utility model provides a solid rectangle fender pile of no end plate portion prestressed concrete has adopted solid rectangle cross-section, prestressing steel and the mixed setting of non-prestressing steel and has been equipped with the telescopic steel hoop cover of mechanical tension, and not only shear resistance is good, the bending resistance bears the weight of the dynamic height, has guaranteed the quality of pile body, has saved the end plate moreover, the cost is reduced, still makes construction cycle shorter and controllable.

Description

Solid rectangle fender pile of no end plate portion prestressed concrete

Technical Field

The utility model relates to a building material field, in particular to solid rectangle fender pile of no end plate portion prestressed concrete.

Background

The foundation pit is a part of building engineering, the development of which is closely related to the development of the construction industry, and the foundation pit is greatly emerged along with high-rise buildings in urban construction. As the urban land is increasingly tense, foundation pit projects are more and more, and foundation pit enclosure methods are also diversified, such as manual hole digging piles, precast piles, deep mixing piles, underground continuous walls, steel sheet piles and the like. Compared with the foundation pit maintenance method of the cast-in-place construction with long period and high cost, such as manual hole digging piles, cast-in-place piles, underground continuous walls and the like, the precast concrete pile has certain advantages in construction period and construction cost.

At present, the precast concrete support piles are mainly prestressed hollow pipe piles, hollow square piles and the like, and the conditions of insufficient shearing resistance, insufficient bending resistance bearing capacity and the like are often caused by the existence of hollow sections, so that the depth of the precast concrete support piles suitable for foundation pits is greatly influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a solid rectangle fender pile of no end plate portion prestressed concrete.

According to one aspect of the utility model, the solid rectangular support pile of the prestressed concrete without the end plate part comprises a long strip-shaped pile body, wherein the cross section of the pile body is rectangular and the inside of the pile body is filled with concrete; the pile comprises a pile body, a steel hoop sleeve is installed at one end of the pile body, a plurality of prestressed steel bars and a plurality of non-prestressed steel bars which are arranged at intervals are embedded in the pile body, the prestressed steel bars and the non-prestressed steel bars are all in a long strip shape and extend in the same direction with the pile body, and one end of each prestressed steel bar is installed on the steel hoop sleeve.

The utility model provides a solid rectangle fender pile of no end plate portion prestressed concrete has adopted solid rectangle cross-section, prestressing steel and the mixed setting of non-prestressing steel and has been equipped with the telescopic steel hoop cover of mechanical tension, and not only shear resistance is good, the bending resistance bears the weight of the dynamic height, has guaranteed the quality of pile body, has saved the end plate moreover, the cost is reduced, still makes construction cycle shorter and controllable.

In some embodiments, the other end of the post body has a post tip integrally disposed therewith. Therefore, the pile body can be driven and placed more conveniently through the pile tip.

In some embodiments, a spiral stirrup is further embedded in the pile body, and the spiral stirrup is welded with each prestressed steel bar and each non-prestressed steel bar. Therefore, the pile body can be further stabilized through the combination of the spiral stirrups and the prestressed reinforcements.

In some embodiments, a plurality of anchoring steel bars are embedded in one end of the pile body close to the steel hoop sleeve, and the extension direction of the anchoring steel bars is perpendicular to the prestressed steel bars and the non-prestressed steel bars. Therefore, the steel hoop sleeve and the concrete around the steel hoop sleeve can be stabilized through the anchoring steel bars, and the steel hoop sleeve is not easy to shake and fall off from the pile body.

In some embodiments, a plurality of mechanical tensioning sleeves are mounted on the inner side of the steel hoop housing, and each of the prestressed reinforcements is mounted on each of the mechanical tensioning sleeves. Therefore, the prestressed reinforcement can be conveniently installed and taken down through the mechanical tensioning sleeve.

In some embodiments, the mechanical tensioning sleeves are distributed around the inside of the steel hoop housing on each side and each corner, and one non-prestressed steel bar is disposed between each two adjacent prestressed steel bars. Hereby, a distribution of mechanical tensioning sleeves is provided which is in accordance with the distribution of the pre-stressing tendons, whereas the non-pre-stressing tendons are distributed between the pre-stressing tendons.

In some embodiments, the number of mechanical tensioning sleeves, prestressed reinforcement and non-prestressed reinforcement is 8. Therefore, the number of the prestressed reinforcements and the number of the non-prestressed reinforcements are set, and under the condition that the cross section of the pile body is rectangular, three prestressed reinforcements and two non-prestressed reinforcements are generally arranged on each edge.

In some embodiments, the concrete has a strength of C50 or greater. From this, sufficient intensity's concrete can guarantee the stability of fender pile.

Drawings

Fig. 1 is a schematic view of an overall structure of an endless-plate-portion-free prestressed concrete solid rectangular support pile according to an embodiment of the present invention;

FIG. 2 is a schematic view showing the internal structure of a partially prestressed concrete solid rectangular fender pile shown in FIG. 1;

FIG. 3 is a schematic structural view of the end plate portion prestressed concrete solid rectangular support pile shown in FIG. 2 at which the steel hoop is located;

FIG. 4 is a schematic cross-sectional view of a partially prestressed concrete solid rectangular fender pile of the end plate shown in FIG. 1;

FIG. 5 is a schematic structural view of the inside face of the steel ferrule shown in FIG. 1.

In the figure: pile body 1, steel hoop cover 2, prestressed reinforcement 3, non-prestressed reinforcement 4, spiral stirrup 5, pile toe 11, anchor reinforcing steel 21, mechanical stretch-draw sleeve 22.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a structure of a solid rectangular post without end plate portion prestressed concrete according to an embodiment of the present invention, fig. 2 shows an internal structure of the solid rectangular post without end plate portion prestressed concrete in fig. 1, fig. 3 shows a structure of one end where a steel hoop cover of the solid rectangular post without end plate portion prestressed concrete in fig. 2 is located, fig. 4 shows a cross-sectional structure of the solid rectangular post without end plate portion prestressed concrete in fig. 1, and fig. 5 shows a structure of the steel hoop cover in fig. 1. As shown in fig. 1-5, the support pile comprises an elongated pile body 1, the interior of the pile body 1 is filled with concrete, and embedded with steel bars, and the strength of the concrete is preferably above C50. Therefore, the internal section of the pile body 1 is solid, and the shearing resistance is higher compared with the adopted hollow section pile.

One end of pile body 1 has the pile toe 11 of conveniently driving into, and pile toe 11 can be with pile body 1 an organic whole setting, and is not provided with the end plate at the other end of pile body 1, but installs a steel hoop cover 2 that can dismantle, installs on pile body 1 through annular steel hoop around the steel hoop cover 2, and the partial reinforcing bar in the pile body 1 also installs on steel hoop cover 2 simultaneously.

The section of the pile body 1 is rectangular, so that the bending-resistant inertia moment of the section in the main shaft direction can be increased, and the bending resistance of the soil facing surface of the pile body 1 is improved.

The reinforcing bar that pile body 1's inside was buried underground is mainly for many prestressed reinforcement 3, many non-prestressed reinforcement 4 and spiral stirrup 5, and each prestressed reinforcement 3 and each non-prestressed reinforcement 4 set up at intervals each other, and both all are rectangular form and with pile body 1 syntropy extension, wherein, the equal detachably of one end of each prestressed reinforcement 3 installs on steel hoop 2. The spiral stirrups 5 are spiral and the central shafts of the spiral stirrups 5 and the pile body 1 extend in the same direction, wherein the spiral stirrups 5, the prestressed reinforcements 3 and the non-prestressed reinforcements 4 are welded and fixed, and the pile body 1 is guaranteed to have enough bending-resistant bearing capacity.

A plurality of anchoring steel bars 21 are also embedded at one end of the pile body 1 close to the steel hoop sleeve 2, the anchoring steel bars 21 are all in a long strip shape, and the extension direction of the anchoring steel bars 21 is vertical to the prestressed steel bars 3. The anchoring bars 21 are not necessarily parallel to each other, but may be perpendicular to each other. The presence of the anchoring reinforcement 21 can reinforce the structure at this location to cushion the vibration that the steel hoop housing 2 receives in operations such as piling, reduce its risk that loosens and drops.

A plurality of mechanical tensioning sleeves 22 are mounted on the inner side of the steel hoop housing 2, the number of the mechanical tensioning sleeves 22 is the same as that of the prestressed reinforcements 3, and one end of each prestressed reinforcement 3 is mounted on each mechanical tensioning sleeve 22. The cross section of the pile body 1 is rectangular, the inner side surface of the steel hoop sleeve 2 is also rectangular, and the mechanical tensioning sleeves 22 are distributed on each side and each corner of the periphery of the inner side surface of the steel hoop sleeve 2, so that each prestressed reinforcement 3 is uniformly distributed and arranged around the inside of the pile body 1, each non-prestressed reinforcement 4 and each prestressed reinforcement 3 are arranged at intervals, specifically, one non-prestressed reinforcement 4 is arranged between two adjacent prestressed reinforcements 3, and then the non-prestressed reinforcement 4 is also distributed and arranged around the inside of the pile body 1.

Preferably, a mechanical tensioning sleeve 22 is installed at each corner of the inner side surface of the steel hoop sleeve 2, and one mechanical tensioning sleeve can be arranged in the middle of each side, so that 3 steel hoop sleeves 2 are installed on each side in total, the total number of the steel hoop sleeves 2 is 8, and the number of the prestressed steel bars 3 is 8. And a non-prestressed reinforcement 4 is arranged between two adjacent prestressed reinforcements 3, and the number of the non-prestressed reinforcements 4 is 8.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a solid rectangle fender pile of no end plate portion prestressed concrete which characterized in that: the pile comprises a long-strip-shaped pile body (1), wherein the section of the pile body (1) is rectangular, and concrete is filled in the pile body; wherein, one steel hoop cover (2) is installed to the one end of pile body (1), and inside is buried underground and has had many prestressing steel (3) and many non-prestressing steel (4) that mutual interval set up, prestressing steel (3) and each non-prestressing steel (4) all are rectangular form and with pile body (1) syntropy extends, and each the one end of prestressing steel (3) is all installed on steel hoop cover (2).

2. An endless partially prestressed concrete solid rectangular support pile according to claim 1, wherein: the other end of the pile body (1) is provided with a pile tip (11) which is arranged integrally with the pile body.

3. An endless partially prestressed concrete solid rectangular support pile according to claim 1, wherein: spiral stirrups (5) are further buried in the pile body (1), and the spiral stirrups (5) are welded with the prestressed reinforcements (3) and the non-prestressed reinforcements (4).

4. An endless partially prestressed concrete solid rectangular support pile according to claim 1, wherein: a plurality of anchoring steel bars (21) are buried at one end, close to the steel hoop sleeve (2), in the pile body (1), and the extending direction of the anchoring steel bars (21) is perpendicular to the prestressed steel bars (3) and the non-prestressed steel bars (4).

5. An endless partially prestressed concrete solid rectangular support pile according to claim 1, wherein: a plurality of mechanical tensioning sleeves (22) are mounted on the inner side face of the steel hoop sleeve (2), and the prestressed steel bars (3) are mounted on the mechanical tensioning sleeves (22) respectively.

6. An endless partially prestressed concrete solid rectangular support pile according to claim 5, wherein: the mechanical tensioning sleeves (22) are distributed on each edge and each corner around the inner side of the steel hoop sleeve (2), and one non-prestressed steel bar (4) is arranged between every two adjacent prestressed steel bars (3).

7. An endless partially prestressed concrete solid rectangular support pile according to claim 6, wherein: the number of the mechanical tensioning sleeves (22), the number of the prestressed reinforcements (3) and the number of the non-prestressed reinforcements (4) are 8.

8. An endless partially prestressed concrete solid rectangular support pile according to any one of claims 1 to 7, wherein: the strength of the concrete is above C50.