CN210263021U

CN210263021U - Concrete pile

Info

Publication number: CN210263021U
Application number: CN201920896700.1U
Authority: CN
Inventors: 陈巧; 赵鹏
Original assignee: Jianhua Construction Materials China Co Ltd
Current assignee: Jianhua Construction Materials China Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-04-07
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a concrete pile, concrete pile include spiral muscle, lead to long prestressed reinforcement and the non-lead to long non-prestressed reinforcement and constitute the mixed reinforcement steel skeleton cage, and pile body outside both ends are equipped with the steel sheet, are equipped with on the non-prestressed reinforcement and detain the festival, be equipped with the reinforcement bar on the one end steel sheet of pile body, reinforcement bar and non-prestressed reinforcement are through transition cover connection. The utility model provides a concrete pile level bears the weight of the dynamic height, and manufacturing process is simple.

Description

Concrete pile

Technical Field

The utility model relates to a building pile foundation technical field especially relates to a concrete pile.

Background

The concrete pile, which is the most important part of the building system, is concerned with the safety of the surrounding buildings. Only under the condition of ensuring the quality of the pile body of the concrete pile, the safety and the stability of an upper building and a peripheral building can be ensured. Although the pile body of a cast-in-place concrete filling pile, an underground continuous wall, a self-supporting cement retaining wall and the like has good bending resistance, the influence of weather is great, construction can hardly be carried out in rainy days, the construction period can not be ensured, the pile forming quality can not be ensured, and national resources are wasted; for the supporting methods such as the SMW method, the steel sheet pile and the like, although the supporting method has higher bending resistance, a large amount of steel is consumed, the cost is overhigh, and when the supporting method is used as a long-term supporting structure, the defects of poor corrosion resistance, high later maintenance cost and the like exist, and in addition, the construction of the SMW method is more complicated and the construction quality problem is easy to occur; the precast concrete sheet pile is adopted in part of projects, but the mould used for producing the precast concrete sheet pile has the defects of complex manufacturing process, high manufacturing cost, low production efficiency, high labor intensity and the like, so that much inconvenience is brought to production, and the production quality is difficult to ensure. How to solve the above problems is an object of intensive study by the present inventors.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a concrete pile, its level bears the weight of dynamic height, whole supporting construction is pleasing to the eye, manufacturing process is simple, the cost is low, production efficiency is high, low in labor strength, stack, transportation convenience.

In order to achieve the above object, the present invention provides a concrete pile, which comprises a steel plate and a pile body made of concrete. The pile body is internally provided with a mixed reinforcement steel bar framework cage consisting of spiral steel bars, full-length prestressed steel bars and non-full-length non-prestressed steel bars, steel plates are arranged at two ends of the outside of the pile body, and the steel plates at the two ends are connected with the prestressed steel bars. The non-prestressed reinforcement is provided with a buckling section; and a reinforcing rib is arranged on a steel plate at one end of the pile body, and the reinforcing rib is connected with the non-prestressed reinforcement through a transition sleeve. The length of the pile body is not less than 7m, the distance between one end of the non-prestressed reinforcement and the steel plate is 1-15cm, and the distance between the other end of the non-prestressed reinforcement and the steel plate is 1-19 cm.

Preferably, the prestressed reinforcement and the non-prestressed reinforcement are arranged along the circumferential direction inside the pile body; the spiral reinforcement is spirally wound around the prestressed reinforcement; the spiral reinforcement surrounding mode is that the first section is arranged perpendicular to the prestressed reinforcement within 180 degrees, the second section is arranged at 10 degrees to 80 degrees with the prestressed reinforcement within 180 degrees, the third section is used for repeating the first section and is parallel to the first section, the fourth section is used for repeating the second section and is parallel to the second section, and the rest is repeated in sequence.

Preferably, the second section of the spiral reinforcement is arranged at an angle of 45 degrees with the prestressed reinforcement within 180 degrees.

Preferably, a reinforcement head is arranged at one end of the non-prestressed reinforcement, and the section of the reinforcement head is circular; a rib head cylinder is arranged on a steel plate of the pile body, a rib head groove is arranged in the rib head cylinder, and the section of the rib head groove is circular; the diameter of the section of the rib head groove is not smaller than that of the rib head.

Preferably, the fastening section is a sleeve provided with an internal thread or an internal thread and an external thread.

Preferably, the ratio of the distance between the adjacent fastening sections to the length of the prestressed reinforcement is 0.033: 1-0.2: 1.

preferably, the reinforcing bar is a twisted steel bar.

Preferably, the transition sleeve wraps reinforcing steel bars and non-prestressed steel bars; the portion surrounding the non-prestressed reinforcement is no less than 1/100 of its length, and the portion surrounding the reinforcing reinforcement is no less than 1/3 of its length.

Preferably, the non-prestressed reinforcement is a spiral groove steel bar or a combination of the spiral groove steel bar and the spiral steel bar

Preferably, the number of the spiral groove steel bars is larger than that of the deformed steel bars.

The tensile force of the prestressed reinforcement after the pile body is manufactured is 0.7 times of the tensile ultimate strength of the prestressed reinforcement.

After the technical scheme is adopted, the utility model discloses concrete pile has following beneficial effect:

1. by adopting the combination form of the prestressed reinforcement and the non-prestressed reinforcement, the earthquake resistance of the pile body can be greatly improved, and the ductility and the bending resistance of the pile body can be improved

2. The non-prestressed reinforcement adopts a structural form that the spiral groove steel bar and the deformed steel bar are combined and the number ratio is more than 1, so that the high strength effect of the spiral groove steel bar can be fully exerted, and the cost is effectively saved;

3. by arranging the transition sleeve, the reinforcing steel bars and the non-prestressed steel bars can realize lossless sliding when the prestressed steel bars are tensioned, the continuity of the non-prestressed steel bars is ensured, and the stress of the non-prestressed steel bars can be transmitted to a steel plate, so that the bending strength of the pile body and the pile body when the pile body is connected is improved;

4. the utility model discloses concrete pile is through setting up mixed reinforcement bar, has that the level bears the weight of dynamic height, whole supporting construction pleasing to the eye, manufacturing process is simple, the cost is low, production efficiency is high, low in labor strength, stack, transportation convenience.

Drawings

FIG. 1 is a front view of a concrete pile

FIG. 2 is a left side view of the concrete pile

FIG. 3 and the schematic structure of the cross-sectional view A-A' in FIG. 1

FIG. 4 is a schematic view of a buckle section

FIG. 5 is a schematic view of a rib head groove structure

The reference numerals in the drawings denote the meanings: 1. a pile body; 2. pre-stressing the steel bars; 3. non-prestressed reinforcement; 4. a spiral rib; 5. a steel plate; 6. buckling sections; 7. reinforcing ribs; 8. a transition sleeve; 9. an internal thread; 10. an external thread; 11. tendon end grooves.

Detailed Description

The invention will be elucidated below on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications that have the same meaning as the scope of the claims and are within the scope of the claims.

The concrete pile structure of the present invention will be described with reference to the following embodiments.

Fig. 1, fig. 2 and fig. 3 are a front view structure schematic diagram, a left view structure schematic diagram and a-a' section structure schematic diagram of fig. 1 of a concrete pile, respectively. The utility model provides a concrete pile, including pile body 1, steel reinforcement cage and the steel sheet 5 of making by concrete placement. The inside mixed reinforcement steel bar skeleton cage that is equipped with by spiral muscle 4, leads to long prestressing steel 2 and non-leading long non-prestressing steel 3 and constitutes of pile body 1, and pile body 1 outside both ends are equipped with steel sheet 5, and the steel sheet 5 and the prestressing steel 2 at both ends are connected. The prestressed reinforcement 2 and the non-prestressed reinforcement 3 are arranged along the circumferential direction in the pile body; the spiral reinforcement 4 spirally surrounds the prestressed reinforcement 2; the spiral reinforcement 4 is arranged in a way that the first section is perpendicular to the prestressed reinforcement 2 within 180 degrees, the second section is arranged at 10-80 degrees to the prestressed reinforcement 2 within 180 degrees, the third section is used for repeating the first section and is parallel to the first section, the fourth section is used for repeating the second section and is parallel to the second section, and the rest is repeated in sequence. Preferably, the second section of the spiral reinforcement 4 is arranged at an angle of 45 degrees with the prestressed reinforcement 2 within 180 degrees. The length of the pile body 1 is not less than 7m, the distance between one end of the non-prestressed reinforcement 3 and the steel plate 5 is 1-15cm, and the distance between the other end of the non-prestressed reinforcement 3 and the steel plate 5 is 1-19 cm. The non-prestressed reinforcement 3 is a low-relaxation spiral groove steel bar; or the non-prestressed reinforcement 3 is deformed steel bar or a combination of a low-relaxation spiral groove steel bar and deformed steel bar, and the number ratio of the low-relaxation spiral groove steel bar to the deformed steel bar is more than 1.

Fig. 4 is a schematic illustration of a button comprising an internal thread 9 and an external thread 10. After the reinforcement cage is finished and before concrete is poured, the buckling sections 6 penetrate through the non-prestressed reinforcements 3 and are arranged at intervals of 50-100 cm. The internal thread 9 of the knot section 6 is meshed with the thread of the non-prestressed reinforcement 3; the external thread 9 of the knot section 6 is contacted with concrete, and the surface area of the external thread 9 is large, so that the slippage can be reduced, and the bonding effect is enhanced.

Fig. 5 is a schematic view of the rib head groove structure. A bar head is welded at one end of the non-prestressed reinforcement 3, the section of the bar head is circular, and the diameter of the section of the bar head is larger than that of the non-prestressed reinforcement; a rib head cylinder is welded on one side of the steel plate corresponding to the rib head, a rib head groove 11 is arranged in the rib head cylinder, and the cross section is circular. The reinforcement head is clamped on the reinforcement head groove 11, so that the steel plate 5 is connected with the non-prestressed reinforcement 3. The structure of the tendon head and the tendon head cylinder can slow down the slippage; and the roll welding is realized, and the production is convenient.

And a reinforcing rib 7 is welded on the other side steel plate of the concrete pile, and the reinforcing rib 7 is a twisted steel bar. The transition sleeve 8 is a steel or non-steel sheet and is cylindrically wrapped with the reinforcing steel bar 7 and the non-prestressed steel bar 3, wherein the portion wrapped with the non-prestressed steel bar 3 is not less than 1/100 of the length of the non-prestressed steel bar, and the portion wrapped with the reinforcing steel bar 7 is not less than 1/3 of the length of the non-prestressed steel bar. The non-prestressed reinforcement 3 and the steel plate 5 are connected through the transition sleeve 7, so that the stability of the concrete pile is enhanced.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the present invention is not limited to the example methods, structures, and precise structures shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A concrete pile comprises a steel plate, a steel reinforcement cage and a pile body, and is characterized in that the steel reinforcement cage comprises spiral reinforcements, full-length prestressed reinforcements and non-full-length non-prestressed reinforcements; the non-prestressed reinforcement is provided with a buckling section; and a reinforcing rib is arranged on a steel plate at one end of the pile body, and the reinforcing rib is connected with the non-prestressed reinforcement through a transition sleeve.

2. The concrete pile of claim 1, wherein the prestressed reinforcement and the non-prestressed reinforcement are disposed in a circumferential direction inside the pile body; the spiral reinforcement is spirally wound around the prestressed reinforcement; the spiral reinforcement surrounding mode is that the first section is arranged perpendicular to the prestressed reinforcement within 180 degrees, the second section is arranged at 10 degrees to 80 degrees with the prestressed reinforcement within 180 degrees, the third section is used for repeating the first section and is parallel to the first section, the fourth section is used for repeating the second section and is parallel to the second section, and the rest is repeated in sequence.

3. The concrete pile of claim 2, wherein the second section of the helical reinforcement is disposed at 45 ° to the prestressed reinforcement within 180 °.

4. The concrete pile according to claim 1, wherein one end of the non-prestressed reinforcement is provided with a reinforcement head, and the section of the reinforcement head is circular; a rib head cylinder is arranged on a steel plate of the pile body, a rib head groove is arranged in the rib head cylinder, and the section of the rib head groove is circular; the diameter of the section of the rib head groove is not smaller than that of the rib head.

5. Concrete pile according to claim 1, characterised in that the knot is a sleeve provided with an internal or internal thread.

6. The concrete pile of claim 1, wherein the ratio of the spacing between adjacent segments to the length of the prestressed reinforcement is 0.033: 1-0.2: 1.

7. the concrete pile of claim 1, wherein the reinforcing bar is a rebar.

8. The concrete pile of claim 1, wherein the transition sleeve encases reinforcing and non-prestressed reinforcement; the portion surrounding the non-prestressed reinforcement is no less than 1/100 of its length, and the portion surrounding the reinforcing reinforcement is no less than 1/3 of its length.

9. Concrete pile according to any one of claims 1-8, characterised in that the non-prestressed reinforcement is a spiral-grooved steel bar or a combination of spiral-grooved steel bars and screw-threaded steel.

10. Concrete pile according to claim 9, characterised in that the number of spiral-grooved steel rods is greater than the number of deformed steel bars.