CN205444969U - Local reinforcing apparatus of rectangle reinforced concrete column - Google Patents

Abstract

The utility model discloses a local reinforcing apparatus of rectangle reinforced concrete column, including reinforced concrete column, a plurality of bar planting and square sleeve pipe, the implantation of bar planting part symmetry needs in reinforced (rfd) reinforced concrete column, square sleeve pipe is including with reinforced concrete column and bar planting parcel, the clearance sets up steel fiber concrete or inorganic grout material between square sleeve pipe is with reinforced concrete column, be equipped with multilayer FRP cloth outside square sleeve pipe, utilize the reinforced (rfd) rectangle reinforced concrete column of this device to compare with newly -built engineering, both wastes of reducible natural resources and social resources, can improve bearing capacity and anti -seismic performance again, it is on active service the life -span to prolong it, the time limit for a project weak point has, low expense, be applicable to high level and super high -rise building, large -span bridge pier column, large scale industry factory building local is consolidated etc.

Description

A Rectangular Reinforced Concrete Column Local Reinforcement Device

technical field

The utility model relates to a reinforcement device for a concrete column, in particular to a local reinforcement device for a rectangular reinforced concrete column.

Background technique

In addition to the advantages of high strength and small deformation of high-performance concrete, high-performance concrete-filled steel tube columns also have the advantages of good ductility, good energy consumption, and good impact and earthquake resistance. It is widely used in structures such as buildings, long-span bridges, and large industrial plants. It is convenient for construction, shortens the construction period, reduces the cost, and achieves good economic results. However, due to the addition and reconstruction of some buildings, the original structural system can no longer meet the bearing capacity requirements; in addition, some buildings under construction or already built have some defects due to design or construction reasons; in addition, due to earthquakes, fires, etc. After the disaster, the existing reinforced concrete structure is damaged, and its bearing capacity and stiffness decrease; these problems directly affect the safe use of the building structure, making the reinforcement and repair of the reinforced concrete structure very important.

At this stage, ordinary concrete structures are often reinforced by means of enlarged section reinforcement, replacement concrete reinforcement, external prestressed reinforcement, outsourcing steel reinforcement, pasted steel plate reinforcement, pasted fiber composite material reinforcement, and prestressed carbon fiber composite plate reinforcement. Enlarged section reinforcement makes new and old concrete poor in co-workability, poor in co-deformation performance, and little improvement in structural plasticity. The reinforcement of the outsourcing section steel makes the outsourcing section steel and the original component unable to work as a whole, and they can only bear the force separately, the performance utilization rate of the outsourcing steel is low, and the integrity is poor. Therefore, there is an urgent need for a new structural device for reinforcing reinforced concrete.

Utility model content

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A local reinforcement device for a rectangular reinforced concrete column, comprising a reinforced concrete column, a plurality of planting bars and a square casing, the planting bars are partially implanted symmetrically in the reinforced concrete column to be reinforced, and the square casing connects the reinforced concrete column and the Planting bars are wrapped inside, and steel fiber concrete or inorganic grouting materials are set in the gap between the reinforced concrete columns in the square casing.

As a preference, the square casing of the local reinforcement device for rectangular reinforced concrete columns is wrapped with multi-layer FRP cloth, and the number of layers is 1-4.

As a preference, the square sleeve of the local reinforcement device for rectangular reinforced concrete columns is composed of two halves butted, and the thickness of the square sleeve is 3-10 mm.

The beneficial effects of the utility model are:

1. Compared with new construction, the rectangular reinforced concrete column reinforced by this device can not only reduce the waste of natural resources and social resources, but also improve the bearing capacity and seismic performance, prolong its service life, and has the advantages of short construction period and low cost. , suitable for local reinforcement of high-rise and super high-rise buildings, long-span bridge piers, large industrial plants, etc.

2. The reinforcement device converts the amount of longitudinal bars and stirrups in the cross-section reinforcement method into square casings, using square casings and wrapping FRP cloth outside, without increasing the amount of steel, to achieve the original The reinforced concrete column has a good hoop effect, which improves the bearing capacity and ductility of the core column.

3. Make full use of the characteristics of FRP cloth, light weight, high strength, and strong corrosion resistance to improve the corrosion resistance of the square casing, and cooperate with the square casing to bear force and jointly restrain the core concrete column.

4. The square casing can be used as a formwork for pouring high-performance concrete, which is easy to operate, convenient to construct, shortens the construction period, reduces engineering costs, and has high reinforcement reliability.

5. Creatively combine the technology of fiber concrete and self-compacting concrete, so that this new type of high-performance concrete has good fluidity, stability, uniformity and compactness, and introduce it into the steel pipe high-performance concrete structure for use For engineering reinforcement.

6. The composite reinforced column belongs to a new type of concrete-filled steel tube structure, which combines the advantages of both the concrete-filled steel tube structure and the reinforcement method of enlarged section, and can greatly improve the bearing capacity and ductility of the original concrete-filled steel tube column. The device has strong technical advantages.

Description of drawings

Figure 1 is a cross-sectional schematic diagram of a reinforced concrete column and a reinforced structure;

Figure 2 is a schematic diagram of a reinforced concrete column and a reinforced structure facade;

Among them, 1-reinforced concrete column, 2-planting bar, 3-concrete, 4-square casing, 5-FRP cloth.

detailed description

The utility model is described by way of example in conjunction with the accompanying drawings,

The utility model provides a local reinforcement device for a rectangular reinforced concrete column, which includes a reinforced concrete column 1, a plurality of planting bars 2 and a square casing 4, and is characterized in that: the planting bars 2 are partially symmetrically implanted into the reinforced concrete to be reinforced In the column 1, the square casing 4 wraps the reinforced concrete column 1 and the planting bar 2, and the steel fiber concrete or inorganic grouting material is arranged in the gap between the reinforced concrete columns 1 in the square casing 4, and the square casing 4 4 Wrap 1 to 4 layers of FRP cloth 5 .

The square sleeve 4 is composed of two halves butted, and the thickness of the square sleeve 4 is 3-10 mm.

The local reinforcement method of the reinforced concrete column by the device of the utility model is as follows:

a. Install symmetrical reinforcement 2 at the place where the original reinforced concrete column 1 needs to be reinforced;

b. A square casing 4 is arranged on the periphery of the reinforced concrete column 1, and the square casing 4 wraps the reinforced concrete column 1 and the planting bar 2;

c Wrap the FRP cloth 5 outside the square sleeve 4, and pour self-compacting steel fiber concrete or inorganic grouting material between the square sleeve 4 and the reinforced concrete column 1 after the adhesive of the FRP cloth 5 is cured.

The above-mentioned embodiments are only technical solutions of the present invention rather than limitations to the design of this case. Those skilled in the art may make changes or equivalent replacements to the present invention without departing from the purpose and spirit of the present invention. If these modifications and equivalent replacements belong to the scope of the claims of the present invention, they shall all be included in the scope of the claims of the present invention.

Claims (3)

1. A local reinforcing device for a rectangular reinforced concrete column, comprising a reinforced concrete column (1), a plurality of planted bars (2) and a square casing (4), characterized in that: the planted bars (2) are partially symmetrically implanted In the reinforced concrete column (1) that needs to be reinforced, the square casing (4) wraps the reinforced concrete column (1) and the planting bar (2), and the reinforced concrete column (1) is wrapped in the square casing (4). Steel fiber concrete or inorganic grouting materials are set in the gaps. 2. A local reinforcing device for a rectangular reinforced concrete column as claimed in claim 1, characterized in that: the square casing (4) is wrapped with multi-layer FRP cloth (5), and the number of layers is 1-4. 3. A local reinforcement device for a rectangular reinforced concrete column as claimed in claim 2, characterized in that: the square casing (4) is composed of two butt-jointed casings, and the thickness of the square casing (4) is 3 ~ 10mm.