Horse stool rib with protective layer

Abstract

The utility model discloses a horse stool rib with a protective layer. The horse stool rib comprises a horse stool rib main body, the horse stool rib body is composed of a straight-strip-shaped cold-drawn steel bar, cold-drawn wire supporting legs and concrete cushion blocks. The cold-drawing wire supporting legs are welded to the two sides of the straight-strip-shaped cold-drawn steel bars and are arranged to be in an n shape, and the two n-shaped ends of the cold-drawing wire supporting legs are arranged in the concrete cushion blocks. The split head rib is standard in arrangement, wide in applicability and good in stability, has certain rigidity and effectively improves the qualified rate of the thickness of a floor hogging moment steel bar protective layer. The device is simple in structure, reasonable in stress, quick to assemble and disassemble, convenient in material taking and capable of greatly improving the qualification rate of the hogging moment steel bar protection layer of the floor.

Description

Technical Field

[0001] The utility model relates to the technical field of housing construction, and particularly relates to a stirrup with a self - contained protective layer. Background Technique

[0002] The "Code for Acceptance of Construction Quality of Concrete Structures" (GB50204 - 2015) stipulates the acceptance criteria for the thickness of the steel bar protective layer of the structural entity: When the qualified point rate of all inspections of the steel bar protective layer thickness is 90% or more, the inspection result of the steel bar protective layer thickness is judged as qualified. It can be seen that the code is extremely strict on the thickness of the stressed steel bar protective layer. However, due to various reasons during the actual construction process, the qualified rate of the thickness of the negative bending moment steel bars in the floor slab has never been able to reach the qualified standard stipulated by the code, and the qualified rate of some projects is even only in single digits. The low qualified rate of the thickness of the negative bending moment steel bars in the floor slab has become a major quality problem in the field of housing construction. Before the completion acceptance of the project, the quality supervision station generally requires the design unit to conduct a calculation for projects with a low qualified rate and issue a written certificate stating that it does not affect the structural safety. Generally, the design requires the construction unit to entrust a testing agency to conduct a static load test and issue a test report showing that the bearing capacity meets the design requirements. The procedure is relatively complex and the cost is relatively high. In recent years, there have been more and more complaints about quality problems, and disputes caused by the low qualified rate and large deviation of the thickness of the negative bending moment steel bars in the floor slab occur frequently, which has had a great negative impact on the brand image of construction enterprises. The thickness of the negative bending moment steel bars in the floor slab not meeting the design requirements has become a major problem for construction enterprises and urgently needs to be improved.

[0003] The qualified rate of the thickness of the negative bending moment steel bars in the floor slab is greatly related to the stirrup and its placement method. Traditional stirrups are mainly divided into two categories: on - site production and factory processing. On - site production is mostly in the shape of a few characters; factory - processed ones include plastic stirrups, concrete stirrups, cold - drawn wire stirrups, strip - shaped finished stirrups, etc. The placement methods include the herringbone shape, the plum blossom shape, or irregular placement, and the use effects are not ideal. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a stirrup with a self - contained protective layer, which is quick to install and disassemble, has reasonable stress, convenient material selection, and can greatly improve the qualified rate of the thickness of the negative bending moment steel bars in the floor slab.

[0005] In order to solve the above - mentioned technical problems, the utility model adopts the following technical solutions:

[0006] A stirrup with a self - contained protective layer, characterized in that it includes: a stirrup main body;

[0007] The stirrup main body is composed of straight - bar cold - drawn steel bars, cold - drawn wire support legs, and concrete cushion blocks;

[0008] Cold-drawn wire support legs are welded to both sides of the straight cold-drawn steel bars. The cold-drawn wire support legs are in a U-shape, and both ends of the U-shape of the cold-drawn wire support legs are arranged inside the concrete cushion blocks.

[0009] Furthermore: The main body of the stirrup is arranged parallel to the floor slab. Reinforcing bars, main reinforcing bars, and beams are arranged inside the floor slab. The reinforcing bars and beams inside the floor slab are arranged in parallel.

[0010] The straight cold-drawn steel bars are arranged perpendicular to the main reinforcing bars of the floor slab and tied firmly with binding wire.

[0011] The concrete cushion blocks are arranged on the formwork.

[0012] Furthermore: The diameter of the straight cold-drawn steel bars is 8 mm.

[0013] Furthermore: The diameter of the cold-drawn wire support legs is 6 mm, and the distance between the U-shapes of the cold-drawn wire support legs is 200 mm.

[0014] Furthermore: The strength grade of the concrete cushion blocks is C35. The length, width, and height of the concrete cushion blocks are all 30 mm. One end of the cold-drawn wire support leg is arranged inside the concrete cushion block, and the distance from one end of the cold-drawn wire support leg to the lower part of the concrete cushion block is 15 mm.

[0015] Furthermore: The distance between the main bodies of the stirrups arranged in parallel is less than 500 mm.

[0016] Compared with the prior art, the present utility model has at least one of the following beneficial effects:

[0017] The structure of the present utility model is compact and simple, the materials are easy to obtain, the integrity is good, the strength and stiffness are high, the qualified rate of the protective layer thickness of the negative bending moment reinforcing bars of the floor slab can be significantly improved, and at the same time, the problem of no protective layer for traditional finished strip stirrups is solved, reducing risks. Description of the Drawings

[0018] Figure 1 It is a plan view of the main body of the stirrup of the present utility model.

[0019] Figure 2 It is a side view of the main body of the stirrup of the present utility model.

[0020] Figure 3 It is a plan view of the use of the present utility model.

[0021] Figure 4 It is a sectional view of the use of the present utility model.

[0022] In the figure: 1 - straight cold-drawn steel bar, 2 - cold-drawn wire support leg, 3 - concrete cushion block, 4 - reinforcing bar, 5 - main reinforcing bar, 6 - binding wire, 7 - formwork, 8 - main body of stirrup, 9 - beam. Detailed Description of the Invention

[0023] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] A staddle steel bar with a self - contained protective layer, comprising: a staddle steel bar main body 8;

[0025] The staddle steel bar main body 8 is composed of a straight cold - drawn steel bar 1, cold - drawn wire support legs 2, and concrete cushion blocks 3;

[0026] Cold - drawn wire support legs 2 are welded on both sides of the straight cold - drawn steel bar 1. The cold - drawn wire support legs 2 are set in a U - shape, and both ends of the U - shape of the cold - drawn wire support legs 2 are arranged in the concrete cushion blocks 3.

[0027] Cold - drawn wire support legs 2 are arranged on both sides of the straight cold - drawn steel bar 1. The number of cold - drawn wire support legs 2 is set according to needs. Both ends of the U - shape of the cold - drawn wire support legs 2 are arranged in the concrete cushion blocks 3. The straight cold - drawn steel bar 1, cold - drawn wire support legs 2, and concrete cushion blocks 3 form the staddle steel bar main body 8;

[0028] The staddle steel bar main body 8 is arranged parallel to the floor slab. There are steel bars 4, main bars 5, and beams 9 in the floor slab. The steel bars 4 and beams 9 in the floor slab are arranged in parallel;

[0029] The staddle steel bar main body 8 is arranged parallel to the steel bars 4 and beams 9 of the floor slab, and the staddle steel bar main body 8 is arranged in a "one" - shaped layout parallel to the distribution steel bars 4 and beams 9 of the floor slab. The straight cold - drawn steel bar 1 is arranged perpendicular to the main bars 5 of the floor slab and tied firmly with binding wires 6;

[0030] The concrete cushion blocks 3 are arranged on the formwork 7. The concrete cushion blocks 3 are supported on the formwork 7, avoiding the direct contact of the lower feet of the U - shaped cold - drawn wire support legs 2 with the formwork 7. This solves the problem of no protective layer for traditional finished strip staddle steel bars.

[0031] The diameter of the straight cold - drawn steel bar 1 is 8 mm. The straight cold - drawn steel bar 1 is cold - drawn, and its strength and stiffness are stronger than those of ordinary steel bars. The straight cold - drawn steel bar 1 is welded to the cold - drawn wire support legs 2.

[0032] The diameter of the cold - drawn wire support legs 2 is 6 mm, and the U - shape spacing of the cold - drawn wire support legs 2 is 200 mm. The cold - drawn wire support legs 2 are cold - drawn, and their strength and stiffness are stronger than those of ordinary steel bars.

[0033] The strength grade of the concrete cushion blocks 3 is C35. The length, width, and height of the concrete cushion blocks 3 are all 30 mm. One end of the cold - drawn wire support legs 2 is arranged in the concrete cushion blocks 3, and the distance from one end of the cold - drawn wire support legs 2 to the lower part of the concrete cushion blocks 3 is 15 mm. Both ends of the U - shape of the cold - drawn wire support legs 2 are cast integrally with the concrete cushion blocks 3.

[0034] The spacing between the main body 8 of the stirrup bars arranged in parallel is less than 500 mm. The main body 8 of the stirrup bars is continuously arranged in a "one" shape parallel to the distribution bars 4 of the floor slab, and the row spacing is not greater than 500 mm. The straight cold-drawn steel bars 1 are perpendicular to the main bars 5 of the floor slab and tied firmly with binding wires 6 to ensure that the main body 8 of the stirrup bars forms an integral body with the negative moment bars.

[0035] Although the present invention has been described herein with reference to a number of illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and embodiments that will fall within the scope and spirit of the principles disclosed in this application. More specifically, within the scope of the present application disclosure, the drawings and the claims, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements made to the components and / or the layout, other uses will also be apparent to those skilled in the art.

Claims

1. A horse stool reinforcement with a self-protection layer, characterized in that: include: Horse stool muscle body (8); The horse stool reinforcement body (8) is composed of a straight cold-drawn steel bar (1), a cold-drawn wire support leg (2), and a concrete pad (3); the cold-drawn wire support legs (2) are welded on both sides of the straight cold-drawn steel bar (1), the cold-drawn wire support legs (2) are arranged in a "J" shape, and both ends of the "J" shape of the cold-drawn wire support legs (2) are arranged in the concrete pad (3).

2. The horse stool reinforcement with a self-protection layer according to claim 1, characterized in that: The main body of the horse stool reinforcement (8) is arranged parallel to the floor slab, and the floor slab is provided with reinforcement bars (4), main reinforcement bars (5) and beams (9), and the reinforcement bars (4) and beams (9) in the floor slab are arranged parallel to each other; The straight cold-drawn steel bars (1) are arranged perpendicularly to the main bars (5) of the floor slab and are fastened with a tie wire (6); The concrete pad (3) is arranged on the formwork (7).

3. The horse stool reinforcement with a self-protection layer according to claim 1, characterized in that: The diameter of the straight cold-drawn steel bar (1) is 8 mm.

4. The horse stool reinforcement with a self-protection layer according to claim 1, characterized in that: The diameter of the cold-drawn wire support legs (2) is 6 mm, and the distance between the cold-drawn wire support legs (2) in the shape of an “X” is 200 mm.

5. The horse stool reinforcement with a self-protection layer according to claim 1 is characterized in that: The concrete pad (3) has a strength grade of C35, the length, width and height of the concrete pad (3) are all 30 mm, one end of the cold-drawn wire support leg (2) is arranged in the concrete pad (3), and the distance from one end of the cold-drawn wire support leg (2) to the lower part of the concrete pad (3) is 15 mm.

6. The horse stool reinforcement with a self-protection layer according to claim 1, characterized in that: The spacing between the parallel arranged horse stool reinforcement bodies (8) is less than 500 mm.

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