CN206486891U - Size is combined reinforcement prestressed concrete stake - Google Patents

Abstract

The utility model belongs to the technical field of concrete pile foundations, in particular to a prestressed concrete pile with large and small composite reinforcement. It solves technical problems such as unreasonable existing designs. This large and small composite reinforced prestressed concrete pile includes a pile body, and the pile body is provided with stirrups, and the pile body is provided with several large-diameter prestressed steel bars for strengthening the pile body, and the above-mentioned stirrups surround In the circumferential direction of the large-diameter prestressed reinforcement, several small-diameter prestressed reinforcements are arranged between two adjacent large-diameter prestressed reinforcements, and the diameter of the large-diameter prestressed reinforcement is the diameter of the small-diameter prestressed reinforcement. 1.1-3 times. The utility model has the advantages of more reasonable design, excellent anti-seismic effect and low cost, and is more suitable for civil and industrial building foundations.

Description

Large and small composite reinforced prestressed concrete piles

technical field

The utility model belongs to the technical field of concrete pile foundations, in particular to a prestressed concrete pile with large and small composite reinforcement.

Background technique

For the method of composite reinforcement, the column wall of the upper structure of the building is more common, and its advantage is that the force is clear, and the weak point at the corner of the section increases the integrity of the column by increasing the diameter of the steel bar. In the case of complex external forces, the corner reinforcement is not easy to be damaged, which plays an obvious role in protecting the safety of the upper structure of the building.

The anti-seismic effect of pile foundation is the key to the comprehensive anti-seismic performance of a building, which belongs to the anti-seismic category of the lower part. However, for a long time, no seismic structural strengthening measures for prefabricated piles have been proposed, only the problem of reinforcement ratio is blindly emphasized, and more equal-diameter steel bars are continuously added to the pile foundation to achieve the purpose of strengthening the pile foundation, and no Subdivision of prestressed reinforcement subdivision and other requirements. This reinforcement method not only wastes steel but also has unsatisfactory anti-seismic effect.

Therefore, in view of the above technical problems, there is an urgent need to provide a prestressed concrete pile with more reasonable design, excellent anti-seismic effect and low manufacturing cost.

Utility model content

The first purpose of the utility model is to solve the above problems and provide a prestressed concrete pile with large and small compound reinforcements, which is more reasonable in design, excellent in anti-seismic effect and low in cost.

In order to achieve the above object, the utility model adopts the following technical solutions: the large and small composite reinforced prestressed concrete pile includes a pile body, the pile body is provided with stirrups, and it is characterized in that, the pile body is also provided with Several large-diameter prestressed steel bars are used to strengthen the pile body. The above-mentioned stirrups surround the circumference of the large-diameter prestressed steel bars, and several small-diameter prestressed steel bars are arranged between two adjacent large-diameter pre-stressed steel bars. , the diameter of the large-diameter prestressed steel bar is 1.1 to 1.6 times the diameter of the small-diameter prestressed steel bar.

In this application, a number of small-diameter prestressed reinforcements are arranged between two adjacent large-diameter prestressed reinforcements, and the large-diameter prestressed reinforcements and small-diameter prestressed reinforcements are compounded to make the steel skeleton of the pile The integrity is effectively enhanced; at the same time, it not only improves the anti-seismic effect of the concrete pile but also saves steel bars and reduces manufacturing costs; secondly, the diameter of the large-diameter prestressed steel bar is 1.1-3 times that of the small-diameter prestressed steel bar, thus effectively The foundation structure strength of the concrete pile is guaranteed, and the design is more reasonable.

In the above-mentioned prestressed concrete pile with composite reinforcement of large and small sizes, the pile body is a square hollow pile body, the stirrups are square stirrups, and each corner inside the stirrups is respectively provided with a large-diameter Stress reinforcement, and between two adjacent large-diameter prestressing reinforcements, several small-diameter prestressing reinforcements are evenly distributed along the side length of the square stirrup.

In the above-mentioned large and small compound reinforced prestressed concrete piles, the pile body is a square solid pile body.

In the above-mentioned prestressed concrete pile with composite reinforcement, the number of the large-diameter prestressed steel bars is an odd multiple of 4, and when the number of large-diameter prestressed steel bars is greater than 3 times, the number of the stirrups located at each The large-diameter prestressed steel bars at the two corners form an L-shaped steel bar unit, and several small-diameter prestressed steel bars are arranged between two adjacent steel bar units.

In the above-mentioned prestressed concrete pile with composite reinforcement of large and small sizes, the number of small-diameter prestressed steel bars is an odd multiple of 4.

In the above-mentioned large and small compound reinforced prestressed concrete piles, the pile body is a circular pile body, the stirrups are circular stirrups, and there are several large-diameter bars distributed in the circumference of the stirrups. As for the prestressed steel bar, several small-diameter prestressed steel bars distributed circumferentially along the inner side of the stirrup are arranged between two adjacent large-diameter prestressed steel bars.

In the above-mentioned large and small compound reinforced prestressed concrete piles, the pile body is a circular hollow pile body.

In the above-mentioned large and small composite reinforced prestressed concrete piles, the circular solid pile body.

In the above-mentioned prestressed concrete pile with composite reinforcement, the number of the large-diameter prestressed steel bars is an odd multiple of 4, and when the number of large-diameter prestressed steel bars is greater than 3 times, the The large-diameter prestressed steel bars form an arc-shaped steel bar unit, and several small-diameter prestressed steel bars are arranged between two adjacent steel bar units.

Compared with the existing technology, the advantages of this size composite reinforced prestressed concrete pile are:

1. By setting several small-diameter prestressed steel bars between two adjacent large-diameter prestressed steel bars, the composite reinforcement of large-diameter pre-stressed steel bars and small-diameter pre-stressed steel bars makes the integrity of the steel skeleton of the pile effective. Reinforcement; at the same time, the anti-seismic effect of the concrete pile is improved and the reinforcement material is saved, which virtually reduces the cost of its manufacture.

2. The diameter of the large-diameter prestressed steel bar is 1.1-3 times that of the small-diameter prestressed steel bar, thereby effectively ensuring the strength of the foundation structure of the concrete pile, and the design is more reasonable.

3. The concrete pile has high strength, which is more suitable for civil and industrial building foundations, and saves engineering cost.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 provided by the utility model.

Fig. 2 is a structural schematic diagram of Embodiment 2 provided by the utility model.

Fig. 3 is a schematic structural diagram of Embodiment 3 provided by the utility model.

Fig. 4 is a schematic structural diagram of Embodiment 4 provided by the utility model.

Fig. 5 is a schematic structural diagram of Embodiment 5 provided by the utility model.

Fig. 6 is a schematic structural diagram of Embodiment 6 provided by the utility model.

Fig. 7 is a schematic structural diagram of Embodiment 7 provided by the utility model.

Fig. 8 is a schematic structural diagram of the eighth embodiment provided by the utility model.

Fig. 9 is a schematic structural diagram of Embodiment 9 provided by the present invention.

Fig. 10 is a schematic structural diagram of Embodiment 10 provided by the utility model.

Fig. 11 is a structural schematic diagram of the eleventh embodiment provided by the utility model.

Fig. 12 is a schematic structural diagram of Embodiment 12 provided by the present invention.

In the figure, a pile body 1, a stirrup 11, a large-diameter prestressed steel bar 2, a steel bar unit 21, and a small-diameter prestressed steel bar 3.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Embodiment one

As shown in Fig. 1 , the utility model provides a prestressed concrete pile with composite reinforcement of large and small sizes. The concrete pile includes a square hollow pile body 1, and a square stirrup 11 is arranged inside the pile body 1. Four large-diameter prestressed steel bars 2 for strengthening the pile body 1 are also arranged in the pile body 1 . The above-mentioned stirrups 11 surround the circumference of the large-diameter prestressed steel bars 2 and four large-diameter prestressed steel bars 2 are respectively located at each corner of the square stirrups 11 . Five small-diameter prestressed steel bars 3 are arranged between two adjacent large-diameter prestressed steel bars 2. In this embodiment, the total number of small-diameter prestressed steel bars 3 is 20, and two adjacent large-diameter steel bars Five small-diameter prestressed steel bars 3 are arranged between the prestressed steel bars 2 and are evenly distributed along the side length direction of the square stirrups 11 . In this embodiment, the diameter of the large-diameter prestressed steel bar 2 is 1.1-3 times that of the small-diameter prestressed steel bar 3 . In this embodiment, several small-diameter prestressed reinforcements are arranged between two adjacent large-diameter prestressed reinforcements, and the large-diameter prestressed reinforcements and small-diameter prestressed reinforcements are compounded to make the steel skeleton of the pile The integrity is effectively enhanced; at the same time, it not only improves the anti-seismic effect of the concrete pile but also saves the reinforcement material, which virtually reduces its manufacturing cost, and because the diameter of the large-diameter prestressed reinforcement is 1- 2 times, thereby effectively ensuring the strength of the foundation structure of the concrete pile, and the design is more reasonable.

Embodiment two

As shown in Figure 2, as the second embodiment of the present utility model, the basic scheme is consistent with Embodiment 1, so it will not be repeated here. The difference is that the large-diameter prestressed steel bars 2 have 12, Each corner of the stirrup 11 is provided with three large-diameter prestressed steel bars 2 and the three large-diameter prestressed steel bars 2 form an L-shaped steel bar unit 21 . Small-diameter prestressed steel bars 3 are arranged between two adjacent steel bar units 21. In this embodiment, the number of small-diameter prestressed steel bars 3 is 12 and between two adjacent steel bar units 21 There are 3 small-diameter prestressed steel bars 3 . In this embodiment, since the large-diameter prestressed steel bars at each corner form an L-shaped steel bar unit 21, the overall structural strength of the concrete pile is virtually improved, making the seismic effect better.

Embodiment Three

As shown in Figure 3, as the third embodiment of the present utility model, the basic scheme is consistent with Embodiment 1, so it will not be repeated here. The difference is that the large-diameter prestressed steel bars 2 have 20, Each corner of the stirrup 11 is provided with five large-diameter prestressed steel bars 2 and the five large-diameter prestressed steel bars 2 form an L-shaped steel bar unit 21 . Small-diameter prestressed steel bars 3 are arranged between two adjacent steel bar units 21 . In this embodiment, the number of 3 small-diameter prestressed steel bars is 4, and one small-diameter prestressed steel bar 3 is arranged between two adjacent steel bar units 21 .

Embodiment four

As shown in Fig. 4, as the fourth embodiment of the present utility model, the basic scheme is consistent with that of Embodiment 1, and will not be repeated here. The difference is that the pile body 1 is a square solid pile body.

Embodiment five

As shown in Fig. 5, as the fifth embodiment of the present utility model, the basic scheme is consistent with that of the second embodiment, and will not be repeated here. The difference is that the pile body 1 is a square solid pile body.

Embodiment six

As shown in Figure 6, as the sixth embodiment of the present utility model, the basic scheme is consistent with the third embodiment, and will not be repeated here. The difference is that the pile body 1 is a square solid pile body.

Embodiment seven

As shown in Figure 7, as the seventh embodiment of the present utility model, the basic scheme is the same as that of Embodiment 1, and will not be repeated here. The difference is that the pile body 1 is a circular hollow pile body 1. The stirrup 11 is a circular stirrup 11, four evenly distributed large-diameter prestressed steel bars 2 are arranged on the inside of the stirrup 11, and two adjacent large-diameter prestressed steel bars 2 are provided with Five small-diameter prestressed steel bars 3 evenly distributed along the inner circumference of the stirrup 11. There are 20 small-diameter prestressed steel bars 3 in total.

Embodiment Eight

As shown in Figure 8, as the eighth embodiment of the present utility model, the basic scheme is consistent with that of Embodiment 1, and will not be repeated here. Rebar 2. Every three large-diameter prestressed steel bars 2 form an arc-shaped steel bar unit 21 , and a total of four arc-shaped steel bar units are evenly distributed in the inner circumferential direction of the stirrup 11 . Between two adjacent arc-shaped steel bar units 21, three small-diameter prestressed steel bars 3 are evenly distributed along the inner circumference of the stirrup 11. There are 12 small-diameter prestressed steel bars 3 in total.

Embodiment nine

As shown in Figure 9, as the ninth embodiment of the present utility model, the basic scheme is consistent with that of Embodiment 1, and will not be repeated here. Rebar 2. Every five large-diameter prestressed steel bars 2 form an arc-shaped steel bar unit 21 , and a total of four arc-shaped steel bar units 21 are evenly distributed in the inner circumferential direction of the stirrup 11 . Between two adjacent arc-shaped steel bar units 21, a small-diameter prestressed steel bar 3 distributed along the inner circumferential direction of the stirrup 11 is arranged. There are four small-diameter prestressed steel bars 3 in total.

Embodiment ten

As shown in Figure 10, as the tenth embodiment of the present utility model, the basic scheme is consistent with the seventh embodiment, and will not be repeated here, the difference is that the pile body 1 is a circular solid pile body .

Embodiment Eleven

As shown in Figure 11, as the eleventh embodiment of the present utility model, the basic scheme is consistent with the eighth embodiment, and will not be repeated here. The difference is that the pile body 1 is a round solid pile body.

Embodiment 12

As shown in Figure 12, as the twelfth embodiment of the present utility model, the basic scheme is the same as that of the ninth embodiment, and will not be repeated here. The difference is that the pile body 1 is a circular solid pile body .

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although the terms such as pile body 1, stirrup 11, large-diameter prestressed steel bar 2, steel bar unit 21, and small-diameter prestressed steel bar 3 are frequently used in this paper, the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is against the spirit of the utility model.

Claims (9)

1. a kind of size is combined in reinforcement prestressed concrete stake, including pile body (1), described pile body (1) and is provided with stirrup (11), Characterized in that, some major diameter deformed bars (2) for being used to strengthen pile body (1) are additionally provided with described pile body (1), on The stirrup (11) stated is looped around between the circumference of major diameter deformed bar (2), two adjacent major diameter deformed bars (2) Provided with some minor diameter deformed bars (3), the diameter of described major diameter deformed bar (2) is minor diameter prestress steel 1.1-3.0 times of the diameter of muscle (3).

2. size according to claim 1 is combined reinforcement prestressed concrete stake, it is characterised in that described pile body (1) For square hollow pile body, described stirrup (11) is square stirrup, and each corner on the inside of stirrup (11) is respectively equipped with greatly Provided with some along square stirrup (11) between diameter deformed bar (2), and adjacent two major diameter deformed bars (2) The equally distributed minor diameter deformed bar (3) in side length direction.

3. size according to claim 2 is combined reinforcement prestressed concrete stake, it is characterised in that described pile body (1) For square solid pile body (1).

4. the size according to Claims 2 or 3 is combined reinforcement prestressed concrete stake, it is characterised in that described is big straight The radical of footpath deformed bar (2) is 4 odd-multiple, when the radical of major diameter deformed bar (2) is more than 3 times, the hoop The major diameter deformed bar (2) in each corner of muscle (11) constitutes the reinforcing bar unit (21) of a L-shaped, and two adjacent reinforcing bars Provided with some minor diameter deformed bars (3) between unit (21).

5. size according to claim 4 is combined reinforcement prestressed concrete stake, it is characterised in that described minor diameter is pre- The radical of stress reinforcing bar (3) is 4 odd-multiple.

6. size according to claim 1 is combined reinforcement prestressed concrete stake, it is characterised in that described pile body (1) For circular pile body (1), described stirrup (11) is circular stirrup (11), in stirrup (11) inner circumferential provided with some circles Some are provided between the major diameter deformed bar (2) of week distribution, two adjacent major diameter deformed bars (2) along stirrup (11) the minor diameter deformed bar (3) of inner circumferential distribution.

7. size according to claim 6 is combined reinforcement prestressed concrete stake, it is characterised in that described pile body (1) For circular hollow pile body (1).

8. size according to claim 6 is combined reinforcement prestressed concrete stake, it is characterised in that described circular solids Pile body (1).

9. the size according to claim 7 or 8 is combined reinforcement prestressed concrete stake, it is characterised in that described is big straight The radical of footpath deformed bar (2) is 4 odd-multiple, when the radical of major diameter deformed bar (2) is more than 3 times, the hoop The circumferential major diameter deformed bar (2) of muscle (11) constitutes the reinforcing bar unit (21) of an arc, and two adjacent reinforcing bar lists Provided with some minor diameter deformed bars (3) between first (21).