CN219118561U

CN219118561U - Prestressed steel bar for concrete

Info

Publication number: CN219118561U
Application number: CN202223453293.8U
Authority: CN
Inventors: 翟淳强; 周正凯; 陈光宇
Original assignee: Taizhou Chunqiang Stainless Steel Co ltd
Current assignee: Taizhou Chunqiang Stainless Steel Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-02
Anticipated expiration: 2032-12-23

Abstract

The utility model provides a prestressed steel bar for concrete, which comprises a bar main body and reinforcing ribs, wherein the outer surface of the bar main body is provided with spiral grooves which spiral around the bar main body along the length direction of the bar main body, and the reinforcing ribs are spirally wound on the outer surface of the bar main body. The utility model ensures the gripping force of the surface of the rod main body through the spiral grooves and the reinforcing ribs, ensures that the concrete can be firmly combined with the rod main body after the concrete is poured, ensures the integral strength of the reinforced concrete, ensures the rod main body to have good strength and toughness through the spiral winding and fixing of the reinforcing ribs on the outer side of the rod main body, and avoids the breakage of the steel rod. Meanwhile, the notch of the spiral groove is smaller than the bottom of the groove, so that concrete entering the spiral groove is not easy to separate from the rod main body from the notch, the grabbing capacity of the rod main body is improved, and firm combination between the concrete and the rod main body is ensured.

Description

Prestressed steel bar for concrete

Technical Field

The utility model relates to the technical field of steel bars, in particular to a prestressed steel bar for concrete.

Background

The prestress steel bar generally refers to a steel bar for concrete; when the prestress steel is constructed, the steel is firstly applied with tension, then concrete is poured, when the strength reaches the requirement, the steel is loosened, the steel is retracted, and the tension with normal use load is counteracted, so that the strong bond strength between the steel and cement is required, and the steel is not easily retracted in the construction or long-term use process. The outer surface of the existing steel bar for concrete is often smooth or only provided with a plurality of ribs to improve the bond between the steel bar and the concrete, and the steel bar has poor gripping force, influences the overall strength of the concrete and has poor toughness in the use process of the concrete.

Disclosure of Invention

The utility model provides a prestressed steel bar for concrete.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the prestress steel bar for concrete comprises a bar main body and reinforcing ribs, wherein the outer surface of the bar main body is provided with spiral grooves which spiral around the bar main body along the length direction of the bar main body, and the reinforcing ribs are spirally wound on the outer surface of the bar main body.

Preferably, the notch of the spiral groove is smaller than the bottom of the spiral groove.

Preferably, the bottom of the spiral groove is an arc-shaped groove bottom.

Preferably, the spiral direction of the reinforcing ribs and the spiral grooves is opposite.

Preferably, the cross section of the rod body is circular, pentagonal, hexagonal or octagonal.

Preferably, the bar body and the reinforcing bars are integrally cast connected.

Preferably, there are at least three of said helical grooves, said helical grooves being equally spaced around the outer surface of said rod body.

Preferably, there are at least three of the reinforcing ribs, the reinforcing ribs being equally spaced around the outer surface of the wand body.

Compared with the prior art, the utility model has the beneficial effects that: (1) The utility model ensures the gripping force of the surface of the rod main body through the spiral grooves and the reinforcing ribs, ensures that the concrete can be firmly combined with the rod main body after the concrete is poured, ensures the integral strength of the reinforced concrete, ensures the rod main body to have good strength and toughness through the spiral winding and fixing of the reinforcing ribs on the outer side of the rod main body, and avoids the breakage of the steel rod. (2) The notch of the spiral groove is smaller than the bottom of the spiral groove. After the concrete is poured, the concrete enters the spiral groove from the notch of the spiral groove, and after solidification, the notch is smaller than the bottom of the groove, so that the concrete entering the spiral groove is not easy to separate from the rod main body from the notch, the grabbing capacity of the rod main body is improved, the firm combination between the concrete and the rod main body is ensured, and the strength of reinforced concrete is improved. (3) Through strengthening rib and the spiral groove that reverse set up, strengthening rib and spiral groove are intersecting winding in the vision, constitute netted, guarantee behind the pouring concrete, grasp between concrete and the steel bar and close the ability reinforce, can firmly combine with the concrete, also support for spiral groove department simultaneously, guarantee the intensity of steel bar, when avoiding pouring concrete to use, the concrete expend with heat and contract with cold leads to the fragile fracture of taking place of spiral groove department or bending, thereby leads to the steel bar to warp the intensity that influences the concrete.

Drawings

FIG. 1 is a schematic perspective view of a prestressed steel bar for concrete according to the present utility model;

FIG. 2 is a front view of a prestressed steel bar for concrete according to the present utility model;

fig. 3 is a plan view of a prestressed steel bar for concrete according to the present utility model.

Detailed Description

For a further understanding of the objects, construction, features, and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.

Referring to fig. 1, 2 and 3 in combination, the prestressed steel bar for concrete according to an embodiment of the present utility model includes a bar main body 100 and reinforcing ribs 200, wherein the outer surface of the bar main body 100 has spiral grooves 110 spiraling around the length direction of the bar main body 100, and the reinforcing ribs 200 are spirally wound on the outer surface of the bar main body 100. The grip force on the surface of the rod main body 100 is ensured through the spiral grooves 110 and the reinforcing ribs 200, the concrete can be firmly combined with the rod main body 100 after the concrete is poured, the integral strength of the reinforced concrete is ensured, the rod main body 100 is ensured to have good strength and toughness through the spiral winding of the reinforcing ribs 200, and the steel rod is prevented from breaking.

The notch 111 of the spiral groove 110 is smaller than the groove bottom 112 of the spiral groove 110. After the concrete is poured, the concrete enters the spiral groove 110 from the notch 111 of the spiral groove 110, and after solidification, the notch 111 is smaller than the groove bottom 112, so that the concrete entering the spiral groove 110 is not easy to separate from the rod main body 100, the grabbing capacity of the rod main body 100 is improved, the firm combination between the concrete and the rod main body is ensured, and the strength of reinforced concrete is improved.

Preferably, the groove bottom 112 of the spiral groove 110 is an arc groove bottom. Through the arc tank bottom setting, avoid appearing the crackle in the bottom of helical groove 112 when building concrete uses for a long time, lead to excellent main part 100 damage, the intensity of steel bar descends to influence the intensity of concrete.

Preferably, the spiral directions of the reinforcing ribs 200 and the spiral grooves 110 are opposite. The strengthening rib 200 can be clockwise direction spiral coiling at the lateral wall of excellent main part 100, spiral recess 110 can be anticlockwise direction spiral setting in the outside of excellent main part 100, through strengthening rib 200 and spiral recess 110 that reverse set up, strengthening rib 200 and spiral recess 110 are the intersecting winding in vision, constitute netted, guarantee behind the pouring concrete, the ability of grabbing between concrete and the steel bar is strong, can firmly combine with the concrete, also support for spiral recess 110 department simultaneously, guarantee the intensity of steel bar, when avoiding pouring concrete to use, concrete expend with heat and contract with cold, lead to spiral recess 110 department fragile emergence fracture or bending, thereby lead to the steel bar to warp the intensity that influences the concrete.

The cross section of the rod body 100 is circular, pentagonal, hexagonal or octagonal. Multiple types of rod bodies can be selected, and the type of cross section of the rod body 100 is not limited, so that the rod is suitable for market demands.

Preferably, the rod body 100 and the reinforcing bars 200 are integrally cast connected. The bar main body 100 and the reinforcing ribs 200 are firmly connected, so that the strength of the steel bar is ensured, and the falling-off of the reinforcing ribs 200 or the cracking of the connecting parts is avoided, thereby prolonging the service time of the steel bar.

Preferably, there are at least three spiral grooves 110, and the spiral grooves 110 are equidistantly disposed around the outer surface of the rod body 100. At least three reinforcing ribs 200 are provided, and the reinforcing ribs 200 are equidistantly arranged around the outer surface of the rod main body 100. The setting of adopting a plurality of spiral grooves 110 and a plurality of strengthening rib 200 guarantees that the ability of grabbing between bar steel surface and the concrete is strong, is difficult for separating between bar steel and the concrete when using, guarantees that the intensity between the last reinforced concrete that forms is high, and is of high quality, and simultaneously equidistant setting between each spiral groove 110 and between the strengthening rib 200, during the use, the bar steel atress is even, and difficult emergence is out of shape, and support strength is good.

The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. A prestressed steel bar for concrete is characterized in that: the novel reinforced bar comprises a bar body and reinforcing ribs, wherein the outer surface of the bar body is provided with spiral grooves which spiral around the bar body along the length direction of the bar body, and the reinforcing ribs are spirally wound on the outer surface of the bar body.

2. The prestressed steel bar for concrete according to claim 1, wherein: the notch of the spiral groove is smaller than the bottom of the spiral groove.

3. The prestressed steel bar for concrete according to claim 1, wherein: the bottom of the spiral groove is an arc-shaped groove bottom.

4. The prestressed steel bar for concrete according to claim 1, wherein: the spiral direction of the reinforcing rib is opposite to that of the spiral groove.

5. The prestressed steel bar for concrete according to claim 1, wherein: the cross section of the rod main body is round, pentagonal, hexagonal or octagonal.

6. The prestressed steel bar for concrete according to claim 1, wherein: the rod main body and the reinforcing ribs are integrally cast and connected.

7. The prestressed steel bar for concrete according to claim 1, wherein: at least three of the spiral grooves are arranged around the outer surface of the rod main body at equal intervals.

8. The prestressed steel bar for concrete according to claim 1, wherein: the reinforcing ribs are at least three, and the reinforcing ribs are equidistantly arranged around the outer surface of the rod main body.