CN216616975U

CN216616975U - Reinforced structure with existing reinforced concrete column of space steel framework restraint

Info

Publication number: CN216616975U
Application number: CN202123403626.1U
Authority: CN
Inventors: 唐兴荣; 顾夏英; 任运泽; 顾天熊; 陈赟
Original assignee: Suzhou Zhonggu Building Science And Technology Co ltd
Current assignee: Suzhou Zhonggu Building Science And Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-27
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a reinforcing structure with a space steel framework for restraining an existing reinforced concrete column, which comprises a column body reinforcing member and is characterized in that: the shaft is consolidated the component and is hugged closely existing reinforced concrete column shaft and restrict the plain concrete layer that sets up all around the space steel framework on plain concrete layer constitutes, the space steel framework is including being located the chord member of the vertical setting of four bights respectively and a plurality of lacing bars of welded fastening between adjacent chord member, lacing bar horizontal arrangement, lacing bar width are not less than 40 millimeters, and the interval between adjacent lacing bars is 100 ~ 250 millimeters from top to bottom. The utility model can effectively improve the load performance and the anti-shearing performance of the column, thereby improving the anti-seismic performance of the column.

Description

Reinforced structure with existing reinforced concrete column of space steel framework restraint

Technical Field

The utility model relates to a reinforcing structure of an existing building, in particular to a structure for reinforcing an existing column by restraining an existing reinforced concrete column by using a space steel framework.

Background

The method is an important method for improving the safety of the existing building by reinforcing the existing reinforced concrete columns of the building to improve the bearing capacity and the seismic performance of the existing reinforced concrete columns.

In the prior art, common reinforcing methods include a section enlarging method, a steel-coating reinforcing method, a fiber-bonded cloth method and the like. The conventional section enlarging method usually needs a large amount of embedded bars so as to effectively connect the additional concrete and the existing reinforced concrete column to bear load, and the strength of the existing column is adversely affected in the bar embedding process; the viscose cloth method requires the use of a large amount of adhesive. The Chinese invention application CN112942884A discloses a construction process for reinforcing a column-coated steel member by increasing the cross section, which respectively splices a plurality of steel plate units on a column foundation section, a column body section and a column head section around the periphery of a wall column, and splices and connects upper and lower adjacent steel plate units. The scheme is actually a deformation of a steel-clad method, the whole difficulty of steel-clad reinforcement is reduced, but the shear force bearing capacity of the column is increased in a limited manner by adopting a structure with a plurality of steel plate units, and researches find that the damage of the shear force is an important factor for damaging the existing column in the earthquake process, so that the scheme has high input cost and poor effect.

The novel existing reinforced concrete column reinforcing structure is provided, and obviously has important significance for the safety of existing buildings.

Disclosure of Invention

The utility model aims to provide a structure for reinforcing an existing reinforced concrete column by using the constraint effect of a space steel framework on core concrete and taking the existing reinforced concrete column as a core column so as to improve the reinforcing performance of the existing reinforced concrete column.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: the utility model provides a reinforced structure with existing reinforced concrete column of space steel framework restraint, includes the shaft and consolidates the component, the shaft is consolidated the component and is hugged closely existing reinforced concrete column shaft and restrict the plain concrete layer that sets up all around the space steel framework on plain concrete layer constitutes, the space steel framework is including chord member and the welded fastening a plurality of lacing bars between adjacent chord member that are located the vertical setting in four bights respectively, lacing bar horizontal arrangement, lacing bar width are not less than 40 millimeters, and the interval between adjacent lacing bars is 100 ~ 250 millimeters from top to bottom.

Among the above-mentioned technical scheme, through the space steel framework restraint plain concrete layer that constitutes by chord member and lacing bar, form the structure of similar stem to need not can effectively bear the load at former column body bar planting, and the shearing force bearing capacity is strong, has improved the anti-seismic performance of reinforcement post.

According to the preferable technical scheme, the height range of the floor slab or the beam is 1/5-1/6 layers from the floor slab or the beam to form a dense area, the rest areas are non-dense areas, the distance between adjacent batten strips above and below the dense area is 100-150 mm, and the distance between adjacent batten strips above and below the non-dense area is 150-250 mm.

In the technical scheme, the chord member is a full-length L-shaped angle steel.

According to the further technical scheme, the position of the beam is provided with a steel bar penetrating through the beam, and two ends of the steel bar are respectively welded and fixed with the chord members.

According to the preferable technical scheme, the lacing strips arranged close to the beam bottom are reinforcing lacing strips, and the width of each reinforcing lacing strip is not less than 50 mm.

Among the above-mentioned technical scheme, roof plate top at the highest level sets up 4 angle hoops respectively, and one side welding of angle hoop is on the adjacent chord member of space steel framework, and the another side of angle hoop hugs closely roof plate upper surface.

Among the above-mentioned technical scheme, respectively through chemical bar planting fixed connection between four chord member lower extremes of shaft reinforcing member and the former basis, chemical bar planting quantity is confirmed according to the same principle with space steel framework chord member bearing capacity, and the upper end welding of chemical bar planting is on the chord member.

According to the further technical scheme, the foundation reinforcing member is arranged on the original foundation and arranged around the column body reinforcing member.

When the former basis is located when native, the basis reinforcing member is reinforced concrete structure, and its steel reinforcement cage includes that the basis of annular arrangement encloses the cover stirrup and the basis that distributes the setting encloses the cover to indulge the muscle, and the basis encloses cover to indulge muscle one end and basis and encloses cover stirrup welded fastening, and the other end and column body reinforcing member's chord member or lacing bar welded fastening.

When the former basis exposes, the basis reinforcement member is the basis reinforcement angle steel that welds on two adjacent chord members on one side, and former basis setting is hugged closely to the another side, and the basis reinforcement angle steel is through the chemical crab-bolt anchor on former basis.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. according to the utility model, by utilizing the constraint effect of the space steel framework on the core concrete, the existing reinforced concrete column is used as the core column, and the existing column reinforcing structure is carried out, so that the load performance and the anti-shearing performance of the column can be effectively improved, and the anti-seismic performance is improved.

2. The utility model utilizes the effect of space steel framework to restrain concrete, the existing reinforced concrete column is a core column, no steel bar needs to be planted on the existing column, and the structure of the existing column cannot be damaged.

3. By arranging the foundation reinforcing member, the utility model can effectively transmit the load of the column body reinforcing member to the original foundation without increasing the load at the joint of the existing column and the foundation.

Drawings

FIG. 1 is a schematic overall structure diagram of the first embodiment;

FIG. 2 is an elevational view of a shaft portion of a first embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is an elevation view of a roof section in accordance with one embodiment;

FIG. 6 is an elevation view of a base part in the first embodiment;

fig. 7 is a cross-sectional view of C-C of fig. 6.

Wherein: 1. a column body reinforcing member; 2. a foundation reinforcement member; 3. existing reinforced concrete columns; 4. a plain concrete layer; 5. a chord member; 6. lacing strips; 7. a frame beam; 8. reinforcing steel bars; 9. reinforcing the lacing bar; 10. a roof slab; 11. an angle iron hoop; 12. original foundation; 13. chemical bar planting; 14. hooping the foundation sleeve; 15. the foundation surrounding sleeve is provided with longitudinal ribs.

Detailed Description

The utility model is further described with reference to the following figures and examples:

the first embodiment is as follows: referring to fig. 1, a reinforcing structure having a space steel frame for restraining an existing reinforced concrete column includes a column body reinforcing member 1 and a foundation reinforcing member 2.

Referring to fig. 2 and 3, the column body reinforcing member is composed of a plain concrete layer 4 tightly attached to the periphery of the column body of the existing column 3 and a spatial steel framework for restraining the plain concrete layer 4, and the spatial steel framework comprises vertically arranged chords 5 respectively located at four corners and a plurality of lacing bars 6 welded and fixed between the adjacent chords 5. In this embodiment, the chord 5 may be an L-shaped angle steel with a side width of 100mm and a thickness of 6mm, the batten 6 may be a steel plate with a width of 60mm and a thickness of 4mm, and the length may be effectively welded to the angle steel at both ends. The batten strips 6 are horizontally arranged, the distance between the upper adjacent batten strips and the lower adjacent batten strips is determined according to the position, the distance between the upper adjacent batten strips and the lower adjacent batten strips is 150 mm in the range of 1/6 floors of a floor or a beam, and the distance between the upper adjacent batten strips and the lower adjacent batten strips in the middle position is 200 mm.

Referring to fig. 2 and 4, when the frame beam 7 is encountered, a reinforcing bar 8 penetrating through the frame beam 7 is arranged instead of the batten 6, and two ends of the reinforcing bar 8 are respectively welded and fixed with the chords 5.

Referring to fig. 2, the lacing strip disposed adjacent to the beam bottom is a reinforcing lacing strip 9, which has a width greater than 50 mm, for example, 80 mm.

Referring to fig. 5, 4 angle hoops 11 are respectively arranged above the ceiling board 10 at the highest layer, one side of each angle hoop 11 is welded on the adjacent chord 5 of the space steel framework, and the other side of each angle hoop 11 is tightly attached to the upper surface of the ceiling board 10. The angle iron hoop in this embodiment adopts 4 pieces of L-shaped angle iron with the side width of 100mm and the thickness of 6 mm.

Referring to fig. 6, the lower ends of the four chords 5 of the column body reinforcing member are fixedly connected with the original foundation 12 through chemical steel bars 13, and the upper ends of the chemical steel bars 13 are welded on the chords 5.

Referring to fig. 6 and 7, on the original foundation 12, a foundation reinforcement member 2 is provided around the shaft reinforcement member. The foundation reinforcement member 2 is a reinforced concrete structure, and a reinforcement cage of the foundation reinforcement member comprises a foundation surrounding sleeve stirrup 14 arranged in an annular manner and a foundation surrounding sleeve longitudinal rib 15 arranged in a distributed manner, wherein one end of the foundation surrounding sleeve longitudinal rib 15 is welded and fixed with the foundation surrounding sleeve stirrup 14, and the other end of the foundation surrounding sleeve longitudinal rib is welded and fixed with a chord 5 or a batten 6 of the column body reinforcement member.

If shaft of the column reinforcement member lower extreme is not in soil, can not set up reinforced concrete structure, directly set up a plurality of foundation reinforcement angle steel, the welding of foundation reinforcement angle steel on one side is on two adjacent chords, and former basic setting is hugged closely on the another side and through the anchoring of chemical crab-bolt on former basis.

Claims

1. The utility model provides a reinforced structure with existing reinforced concrete column of space steel framework restraint, includes shaft reinforcement member, its characterized in that: the shaft is consolidated the component and is hugged closely existing reinforced concrete column shaft and restrict the plain concrete layer that sets up all around the space steel framework on plain concrete layer constitutes, the space steel framework is including being located the chord member of the vertical setting of four bights respectively and a plurality of lacing bars of welded fastening between adjacent chord member, lacing bar horizontal arrangement, lacing bar width are not less than 40 millimeters, and the interval between adjacent lacing bars is 100 ~ 250 millimeters from top to bottom.

2. The reinforcing structure of an existing reinforced concrete column with a spatial steel frame constraint according to claim 1, characterized in that: the distance between the floor slab or the beam 1/5-1/6 layers is a dense area, the rest are non-dense areas, the distance between the upper and lower adjacent batten of the dense area is 100-150 mm, and the distance between the upper and lower adjacent batten of the non-dense area is 150-250 mm.

3. The reinforcing structure of an existing reinforced concrete column with a spatial steel frame constraint according to claim 2, characterized in that: the chord members are L-shaped angle steels with full length.

4. The reinforcing structure of an existing reinforced concrete column with a spatial steel frame constraint according to claim 1, characterized in that: and reinforcing steel bars penetrating through the beams are arranged at the positions of the beams, and two ends of each reinforcing steel bar are welded and fixed with the chords respectively.

5. The reinforcing structure of an existing reinforced concrete column with a spatial steel frame constraint according to claim 1, characterized in that: the batten strip arranged close to the beam bottom is a reinforcing batten strip, and the width of the reinforcing batten strip is not less than 50 mm.

6. The reinforcing structure of an existing reinforced concrete column with a spatial steel frame constraint according to claim 1, characterized in that: 4 angle steel hoops are respectively arranged above the top floor plate of the highest layer, one side of each angle steel hoop is welded on the adjacent chord of the space steel framework, and the other side of each angle steel hoop is tightly attached to the upper surface of the top floor plate.

7. The reinforcing structure of an existing reinforced concrete column with a spatial steel frame constraint according to claim 1, characterized in that: four chord member lower extremes of shaft reinforcing member and former basis are respectively through chemical bar planting fixed connection, and chemical bar planting quantity is confirmed according to the same principle with space steel framework chord member bearing capacity, and the upper end welding of chemical bar planting is on the chord member.

8. The reinforcing structure with a space steel frame restraining existing reinforced concrete column according to claim 7, characterized in that: the foundation reinforcing member is arranged on the original foundation and surrounds the column shaft reinforcing member.

9. The reinforcing structure with a space steel frame restraining existing reinforced concrete column according to claim 8, characterized in that: when the former basis is located when native, the basis reinforcing member is reinforced concrete structure, and its steel reinforcement cage includes that the basis of annular arrangement encloses the cover stirrup and the basis that distributes the setting encloses the cover to indulge the muscle, and the basis encloses cover to indulge muscle one end and basis and encloses cover stirrup welded fastening, and the other end and column body reinforcing member's chord member or lacing bar welded fastening.

10. The reinforcing structure with a space steel frame restraining existing reinforced concrete column according to claim 8, characterized in that: when the former basis exposes, the basis reinforcement member is the basis reinforcement angle steel that welds on two adjacent chord members on one side, and former basis setting is hugged closely to the another side, and the basis reinforcement angle steel is through the chemical crab-bolt anchor on former basis.