A cantilevered plate balcony reinforced with an additional steel structure

Abstract

The present invention discloses a cantilevered plate-type balcony reinforced with an additional steel structure, comprising an original wall and a steel frame, the steel frame comprising a newly added steel column, a cantilevered steel beam and a horizontal steel beam, the newly added steel column, the cantilevered steel beam and the horizontal steel beam are connected by equal-strength welding, a newly added foundation is provided at the bottom of the outer side of the original wall, and a steel column foot is inserted in the newly added foundation, a steel column pad is provided at the bottom inside the steel column foot, the newly added steel column is inserted into the steel column foot and supported on the steel column pad, embedded bolts are provided under the steel column pad, and the embedded bolts are embedded in the newly added foundation, a bolt pad is provided at the lower end of the embedded bolt, and an original ring beam is provided on the original wall; the present invention adopts an additional steel frame structure for reinforcement, and chemically embeds steel bars and welds the newly added steel column, the cantilevered steel beam, the horizontal steel beam and the original wall, the original ring beam and the original balcony slab to fix them, so the construction difficulty is small, the operability is strong, and the construction period is short.

Description

Technical Field

[0001] The invention relates to the technical field of building reinforcement, and in particular to a cantilever plate-type balcony reinforced by an external steel structure. Background Art

[0002] In recent years, there are more and more renovation, transformation and renewal projects in old residential areas. Due to the fact that the old houses were built at an early age, with low construction standards, low strength of building materials, and increased loads during later use, some cantilevered plate-type balcony slab tops have varying degrees of damage such as water seepage, cracking, large deformation, steel bar corrosion, and downward deviation of the main load-bearing steel bars, which seriously affect the living safety and comfort of the residents and need to be checked and reinforced. Therefore, the present invention proposes a method of reinforcing the cantilevered plate-type balcony with an external steel structure to solve the problems existing in the prior art. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to propose a cantilevered slab balcony reinforced with an additional steel structure. The cantilevered slab balcony reinforced with an additional steel frame structure is reinforced by using chemical anchor welding to fix newly added steel columns, cantilevered steel beams, horizontal steel beams to the original walls, original ring beams, and original balcony slabs. The construction difficulty is small, the operability is strong, and the construction period is short.

[0004] To achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: a cantilever plate balcony reinforced with an additional steel structure, comprising an original wall and a steel frame, the steel frame comprising newly added steel columns, cantilevered steel beams and horizontal steel beams, the newly added steel columns, cantilevered steel beams and horizontal steel beams are connected by equal strength welding, a newly added foundation is provided at the bottom of the outer side of the original wall, and a steel column foot is inserted in the newly added foundation, a steel column pad is provided at the bottom inside the steel column foot, the newly added steel column is inserted into the steel column foot and supported on the steel column pad, embedded bolts are provided under the steel column pad, and the embedded bolts are embedded in the newly added foundation, a bolt pad is provided at the lower end of the embedded bolt, an original ring beam is provided on the original wall, and an original balcony slab is provided on the outer side of the original ring beam, an original floor slab is provided on the inner side of the original ring beam, and chemically embedded bars are planted in the original wall, the original balcony slab and the original ring beam.

[0005] Further improvements are: the newly added steel columns are welded to the chemically embedded bars in the original wall to form a tie, the horizontal steel beams are welded to the chemically embedded bars in the original ring beams, and the cantilevered steel beams are welded to the chemically embedded bars in the original balcony slabs.

[0006] A further improvement is that the newly added steel column is welded to the two chemically embedded steel bars in the original ring beam at the position of the original ring beam, and the embedding depth is 80 mm to 120 mm.

[0007] A further improvement is that the newly added steel column is welded to the two chemically embedded bars in the original wall at the original wall position, and two chemically embedded bars are arranged at every interval of 400mm to 600mm, and the embedded bar depth is 80mm to 120mm.

[0008] A further improvement is that the horizontal steel beam is welded to two chemically embedded bars in the original ring beam at the original ring beam position, and two chemically embedded bars are arranged at every interval of 700mm to 1500mm, and the embedded bar depth is 80mm to 120mm.

[0009] A further improvement is that the cantilever steel beam is welded to a chemically embedded bar in the original balcony slab under the original balcony slab, and the chemically embedded bar is arranged at every interval of 300 to 700 mm, and the embedded bar depth is 50 to 100 mm.

[0010] A further improvement is that stirrups are provided on the inner side of the steel column foot, and the stirrups are fixed to the newly added steel column by bolts.

[0011] The beneficial effects of the present invention are as follows: the present invention adopts an additional steel frame structure for reinforcement, and uses chemical anchor welding to fix newly added steel columns, cantilevered steel beams, horizontal steel beams with the original walls, original ring beams, and original balcony slabs. The construction difficulty is small, the operability is strong, and the construction period is short. The impact on the daily life of the original residents during the construction process is relatively small. It not only solves the problem of insufficient bending bearing capacity of the upper part of the original balcony slab without affecting the appearance of the building, but also has social and economic benefits in reinforcing the balcony cantilever slabs of old residential buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side sectional view of the foot of a steel column of the present invention;

[0013] Figure 2 A top view of a steel column foot of the present invention;

[0014] Figure 3 This is a top view schematic diagram of the balcony reinforcement of the present invention;

[0015] Figure 4 This is a schematic diagram of the main view of the balcony reinforcement of the present invention;

[0016] Figure 5 This is a schematic diagram of the connection between the newly added steel columns, cantilevered steel beams, and the original walls, original ring beams, and original floor slabs of the present invention;

[0017] Figure 6 It is a schematic diagram of the welding node of the newly added steel column and the cantilever steel beam of the present invention;

[0018] Figure 7 It is a schematic diagram of the connection node between the newly added steel column and the original wall anchor bar of the present invention;

[0019] Figure 8 It is a schematic diagram of the horizontal steel beam and the original ring beam anchor bars of the present invention;

[0020] Fig. 9 It is a schematic diagram of the interior of the steel column foot of the present invention.

[0021] Among them: 1. Original wall; 2. Newly added steel column; 3. Cantilevered steel beam; 4. Horizontal steel beam; 5. Newly added foundation; 6. Steel column foot; 7. Steel column pad; 8. Embedded bolts; 9. Bolt pad; 10. Original ring beam; 11. Original balcony slab; 12. Original floor slab; 13. Chemically embedded reinforcement; 14. Stirrups; 15. Bolts. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0023] according to Figure 1 , 2 As shown in Figures 3, 4, 5, 6, 7, 8, and 9, this embodiment provides a cantilevered plate-type balcony reinforced with an additional steel structure, including an original wall 1 and a steel frame, wherein the steel frame includes a newly added steel column 2, a cantilevered steel beam 3, and a horizontal steel beam 4, wherein the newly added steel column 2, the cantilevered steel beam 3, and the horizontal steel beam 4 are connected by equal-strength welding, and a newly added foundation 5 is provided at the bottom of the outer side of the original wall 1, and a steel column foot 6 is inserted in the newly added foundation 5, and a steel column pad 7 is provided at the bottom inside the steel column foot 6 The newly added steel column 2 is inserted into the steel column foot 6 and supported on the steel column pad 7. The steel column pad 7 is provided with an embedded bolt 8, and the embedded bolt 8 is embedded in the newly added foundation 5. The lower end of the embedded bolt 8 is provided with a bolt pad 9. The original wall 1 is provided with an original ring beam 10, and the original balcony slab 11 is provided on the outside of the original ring beam 10. The original floor slab 12 is provided on the inside of the original ring beam 10. The original wall 1, the original balcony slab 11 and the original ring beam 10 are all planted with chemical embedded bars 13.

[0024] The newly added steel column 2 is welded to the chemically embedded reinforcement 13 in the original wall 1 to form a tie, the horizontal steel beam 4 is welded to the chemically embedded reinforcement 13 in the original ring beam 10, and the cantilever steel beam 3 is welded to the chemically embedded reinforcement 13 in the original balcony slab 11.

[0025] The newly added steel column 2 is welded to the two chemically embedded steel bars 13 in the original ring beam 10 at the position of the original ring beam 10, and the embedding depth is 80 mm to 120 mm, for example, 100 mm, 110 mm, etc.

[0026] The newly added steel column 2 is welded to the two chemically embedded bars 13 in the original wall 1 at the position of the original wall 1, and two chemically embedded bars 13 are arranged at a spacing of 400mm to 600mm, for example 500mm, and the embedded bar depth is 80mm to 120mm, for example 100mm.

[0027] The horizontal steel beam 4 is welded to two chemically embedded rebars 13 in the original ring beam 10 at the position of the original ring beam 10, and two chemically embedded rebars 13 are arranged at every interval of 700mm to 1500mm, for example, two are arranged at 800mm, 900mm, 1000mm, 1100mm, 1200mm, etc., and the embedded rebar depth is 80mm to 120mm, for example, 100mm.

[0028] The cantilever steel beam 3 is welded to a chemically embedded bar 13 in the original balcony slab 11 under the original balcony slab 11, and the chemically embedded bar 13 is arranged at every interval of 300 to 700 mm, for example, one is arranged every 500 mm, and the embedded bar depth is 50 to 100 mm, for example, 70 mm.

[0029] The inner side of the steel column foot 6 is provided with stirrups 14 , and the stirrups 14 are fixed to the newly added steel column 2 via bolts 15 .

[0030] During processing, firstly, safety support measures are adopted to chisel out the original cantilever plate at the location of the newly added steel column 2 to form a 220 square hole, and the site is cleaned up in time after chiseling out. At the same time, the foundation is excavated at the corresponding position of the newly added steel column 2 to the original foundation depth, and the newly added foundation 5 is poured and the embedded bolts 8 and the steel column foot 6 with studs 15 are inserted according to the steel structure drawings. Then, cut the main steel materials of the external steel structure according to the drawings. First, locate and drill holes for the original wall 1, the original balcony slab 11, and the original ring beam 10 that need chemical anchoring 13. After the holes are formed, blow away the floating sediment in the holes to prevent dust or broken bricks from entering the holes. Then remove the rust and dirt on the contact surfaces that need anchoring. Inject glue into the holes, apply the glue on the surface of the steel bars, slowly rotate the steel bars and insert them into the holes to exhaust excess air, and seal them with epoxy putty. After the anchoring glue is cured, place the newly added steel column 2 according to the steel structure, bend the steel bars implanted in the wall and weld them to the newly added steel column 2; weld the newly added steel column 2 to the horizontal steel beam 4 in the plane, and weld them to the chemical anchoring 13 of the original ring beam 10; weld the newly added steel column 2 to the cantilever steel beam 3, and weld them to the chemical anchoring 13 of the original balcony slab 11, and calibrate all the newly added steel pipes. Finally, all steel structures and connection nodes are treated with anti-corrosion, rust removal, and fire prevention.

[0031] The cantilevered slab balcony is reinforced with an additional steel frame structure. The newly added steel columns 2, cantilevered steel beams 3, horizontal steel beams 4 are welded and fixed with the original walls 1, the original ring beams 10, and the original balcony slabs 11 by chemical anchoring 13. The construction has low difficulty, strong operability, and short construction period. The construction process has little impact on the daily life of the original residents. It solves the problem of insufficient bending bearing capacity of the upper part of the original balcony slab 11 without affecting the appearance of the building. It has social and economic benefits in reinforcing the balcony cantilever slabs of old residential buildings.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cantilevered plate-type balcony reinforced with an external steel structure, comprising an original wall (1) and a steel frame, characterized in that: The steel frame comprises a newly added steel column (2), a cantilevered steel beam (3) and a horizontal steel beam (4); the newly added steel column (2), the cantilevered steel beam (3) and the horizontal steel beam (4) are connected by equal strength welding; a newly added foundation (5) is provided at the bottom of the outer side of the original wall (1); a steel column foot (6) is inserted in the newly added foundation (5); a steel column pad (7) is provided at the bottom of the steel column foot (6); the newly added steel column (2) is inserted into the steel column foot (6) and supported on the steel column pad (7); An embedded bolt (8) is provided under the steel column pad (7), and the embedded bolt (8) is embedded in the newly added foundation (5). A bolt pad (9) is provided at the lower end of the embedded bolt (8). An original ring beam (10) is provided on the original wall (1), and an original balcony slab (11) is provided on the outer side of the original ring beam (10). An original floor slab (12) is provided on the inner side of the original ring beam (10). Chemically embedded reinforcement (13) is planted in the original wall (1), the original balcony slab (11) and the original ring beam (10).

2. The cantilevered plate-type balcony reinforced with an external steel structure according to claim 1, characterized in that: The newly added steel column (2) is welded to the chemically embedded reinforcement (13) in the original wall (1) to form a tie, the horizontal steel beam (4) is welded to the chemically embedded reinforcement (13) in the original ring beam (10), and the cantilevered steel beam (3) is welded to the chemically embedded reinforcement (13) in the original balcony slab (11).

3. The cantilevered plate-type balcony reinforced with an external steel structure according to claim 1, characterized in that: The newly added steel column (2) is welded to the two chemically embedded steel bars (13) in the original ring beam (10) at the position of the original ring beam (10), and the embedding depth is 80 mm to 120 mm.

4. The cantilevered plate-type balcony reinforced with an external steel structure according to claim 1, characterized in that: The newly added steel column (2) is welded to the two chemically embedded bars (13) in the original wall (1) at the position of the original wall (1), and two chemically embedded bars (13) are arranged at a spacing of 400 mm to 600 mm, and the embedded bar depth is 80 mm to 120 mm.

5. The cantilevered plate-type balcony reinforced with an external steel structure according to claim 1, characterized in that: The horizontal steel beam (4) is welded to two chemically embedded bars (13) in the original ring beam (10) at the position of the original ring beam (10), and two chemically embedded bars (13) are arranged at every interval of 700mm to 1500mm, and the embedded bar depth is 80mm to 120mm.

6. The cantilevered plate-type balcony reinforced with an external steel structure according to claim 1, characterized in that: The cantilever steel beam (3) is welded to a chemically embedded reinforcement (13) in the original balcony slab (11) under the original balcony slab (11), and the chemically embedded reinforcement (13) is arranged at intervals of 300 to 700 mm, and the embedded reinforcement depth is 50 to 100 mm.

7. The cantilevered plate-type balcony reinforced with an external steel structure according to claim 1, characterized in that: Stirrups (14) are provided on the inner side of the steel column foot (6), and the stirrups (14) are fixed to the newly added steel column (2) via bolts (15).

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