What is the depth of the secondary structure reinforcement 30

Secondary structure. There are two types of reinforcement depth:

1. Infill the wall.

6. The length of the tie rib is 90mm

2. The length of the masonry should not be less than 1 5 and not less than 700mm when the length of the wall is pressed.

Runs along the full length of the wall.

3. If the reinforcement is planted, the end is a 90-degree hook, but the implant in the wall is generally 10d, and there are also 12d or 15d.

The depth of the secondary structure is the minimum value of i 10*d.

The depth of the reinforcement refers to the depth of the reinforcement implanted in the concrete column or concrete wall, and the length of the masonry is not extended outside, the length of the reinforcement can be set in the engineering settings, in the engineering settings - calculation settings - masonry - structural column or masonry reinforcement, the general software defaults to 15d, which can be modified.

Construction process: positioning and pay-off of planting reinforcement - drilling of planting reinforcement - cleaning and treatment of drilling - acceptance of drilling - preparation of structural adhesive - drilling and glue injection - implantation of steel bar and temporary fixing - curing - planting reinforcement drawing inspection - protection of planting reinforcement and pouring of concrete.

In the secondary structure, it is necessary to plant reinforcement to a depth of 10 of the diameter of the reinforcement. i.e. 10d

The depth of the structural reinforcement is 15D according to the national standard concrete structure reinforcement design code GB50367-2006; Seismic reinforcement of deep-rooted buildings.

The anchorage depth is 12D, and when the thickness of the substrate is limited, it shall not be less than LOD.

If there are no design requirements, the general structure can be planted with 15 times d.

The depth of reinforcement is generally 15d. Planting reinforcement, also known as planting reinforcement, is a kind of connection technology for post-anchoring of steel bars in the seismic reinforcement project of building structures, which uses the gripping force of structural glue lock keys, and is the best choice for structural reinforcement reinforcement and heavy load fastening applications.

Chemical reinforcement planting refers to drilling holes in concrete, wall rocks and other substrates, and then injecting high-strength reinforcement glue (Note: high-strength building reinforcement adhesive is roughly divided into two types: injection reinforcement glue and barrel reinforcement glue). After inserting steel bars or profiles, the steel bars are bonded to the substrate after the glue is cured, which is a construction engineering technology that is more commonly used in the reinforcement industry.

"Reinforcement planting" technology is a simple and effective connection and anchoring technology for concrete structures; Ordinary steel bars can be implanted, and bolt-type anchor bars can also be implanted; Now it has been widely used in the reinforcement and renovation of existing buildings, such as: the remediation of the leakage of buried steel bars or the deviation of steel bars from the design position in construction, the reinforcement of components to increase cross-section reinforcement, the extension of superstructure span, jacking of beams and columns, the planting reinforcement of shear walls in houses and high-rise buildings.

Secondary structure. What is the depth of the reinforcement:

Infill the wallThe diameter of the tie ribs.

6. Implantation length 90mm.

2. The length of the embedded masonry human body, engineering constructionSeismic ratingFor.

degree, can not be less than 1 5 and not less than 700mm of the wall length.

It needs to be opened to traffic along the entire length of the wall.

3. If the reinforcement is planted, the top is a 90-degree hook, but the implant in the wall is generally 10d, and it is also planted for 12d or 15d, and it is required to be removed according to the structure of the specification. Difficult problems of secondary structure reinforcement planting.

1. When the reinforcement implanted in the secondary structure is HRB335 level, the compressive strength of the concrete of the original prefabricated circular component is marked.

The grade must not be lower than C15; When the HRB400 grade reinforcement is selected, the concrete of the original prefabricated component should not be lower than C20.

2. After the secondary structure is planted, it is generally not allowed to be welded by arc welding on the planted steel bar, if the situation is indeed required when arc welding and electric welding, the concrete surface of the welding spacer must exceed 15d, and the root of the exposed part of the planting reinforcement should be wrapped with a towel of cold water prepreg (to prevent arc welding and welding calorific value.

Concrete is fried to cool down).

3. Try to keep the dry secondary structure of the construction geographical environment, and choose the temperature and quality of the building construction.

4. The steel bar used for planting reinforcement in the secondary structure should be implanted as far as possible according to the requirements of the anti-rust place, and the surface should not have oil stains and other dirt.

Summary. The specifications for secondary structure reinforcement are as follows. The standard steel bar diameter can be selected according to the thickness of the secondary structure wall, such as 24 walls, the diameter of the steel bar shall not be less than 6 mm, and the implant length shall not be less than 90 mm.

For example, 12 walls require that the length of steel bar implantation should not be less than 60 mm. In the case of pressing into the wall at 6 7 degrees, the length of the wall should not be less than 1 5, and the total length should not be less than 700 mm, if it is between 8 and 9 degrees, the entire wall should be placed in the form of reinforcement. In addition to this, the implanted rebar must be hooked at 90 degrees at the top position.

The specifications for secondary structure reinforcement are as follows. The standard steel bar diameter can be selected according to the thickness of the secondary structure wall, such as 24 walls, the diameter of the steel bar is not less than 6 mm, and the implant length is not less than 90 mm. For example, 12 walls require that the length of steel bar implantation should not be less than 60 mm.

In the case of pressing into the wall at 6 7 degrees, the length of the wall should not be less than 1 5, and the total length of the key should not be less than 700 mm, if it is between 8 9 degrees, the entire wall should be placed in the form of reinforcement. In addition to this cavity, the implanted rebar must be hooked at 90 degrees at the top of the bar.

What is the depth of reinforcement reinforcement for grade 3 reinforcement with a diameter of 12 mm for secondary structure door lintels?

Hurry up! What is the depth of rebar planting in the secondary structure? 1. Fill the tie bar of the wall, the diameter is 6, the length of the implant is embedded in the masonry human body, and when the seismic grade of the engineering building is the degree, it cannot be less than 1 5 of the wall length and not less than 700mm degree, and it is necessary to roll along the full length of the wall to open to traffic.

3. If you plant the tendons, the top is a 90-degree hook, but the general 10d implanted in the human body is 10d, and there are 12d or 15d implants.

The depth of reinforcement planting in the secondary structure is to multiply the diameter of the reinforcement by 10 times or more, mainly based on the requirements of the design. The depth of reinforcement refers to the depth at which the reinforcement is implanted into the concrete column or concrete wall, without protruding into the masonry on the outside. The secondary structure reinforcement planting includes positioning, drilling, bathymetry, a first let the second air clear the hole, a hole clearing, the second air clearing, the second hole cleaning, the front of the steel bar rust removal treatment, steel bar treatment, injection of reinforcement glue, steel bar planting, rotary exhaust, maintenance and other operation processes.

Kiss! Hello, happy to answer your <>

The depth of reinforcement planting in the tensile area of the reinforcement is 150mm; Reinforcement depth in compression zone: 100mm12 and 14 steel bars have the same value as the reinforcement depth above concrete.

But in principle, it is different, the depth of reinforcement in the tension area: 10d, 150mm, take the larger value; Reinforcement depth in compression zone: 7d, 100mm, take the larger value; d is the diameter of the planting bar.

When the concrete structure is reinforced and transformed by virtual reinforcement technology, the concrete strength grade of the original component should be determined according to the on-site test results. When HRB335 grade steel bars are used for planting, the concrete strength grade of the original component shall not be lower than C15; When planting with HRB400 grade steel bars, the concrete of the original components shall not be lower than C20. Hope mine can help you <>

Do you have any other questions?

Hello, I have seen your question, and I am sorting out the answer, please wait a while In the process of our project construction, the general standard of the planting depth of the secondary structure is 15d, d is what we call the diameter of the reinforcement, if we are 6mm between the circular steel bar, at this time our planting depth is 90mm, I hope my help to you, thank you If you have other engineering questions, please feel free to ask.