A system for reconstructing existing residential buildings by removing walls and adding beams and its construction method

Abstract

The present invention relates to a system for reconstructing an existing residential building by demolishing walls and adding beams and a construction method thereof, and belongs to the field of structural reconstruction technology. The problem of narrow indoor space is solved by demolishing the original inner wall and adding a channel steel to bear the load. The system comprises an original floor slab, an original inner wall, a newly added channel steel, a newly added channel steel column and a square steel plate. The system for reconstructing an existing residential building by demolishing the wall and adding beams is to demolish the original inner wall, unload the upper load before demolishing the original inner wall, and then install the newly added channel steel at the top of the demolished original inner wall by drilling and chemically embedding reinforcement, and then weld the newly added channel steel to the newly added channel steel columns on both sides close to the original outer wall, so that all the upper loads are borne by the newly added channel steel, and the newly added channel steel then transfers the upper load to the lower part through the newly added channel steel columns and column feet on both sides.

Description

Technical Field

[0001] The invention relates to a system for reconstructing an existing residential structure by demolishing walls and adding beams and a construction method thereof, and belongs to the technical field of structural reconstruction. Background Art

[0002] During the renovation of existing residential buildings, the internal spacing of some old brick-concrete structures is not reasonable, and residents need to renovate the wall layout. Usually, the renovation of the wall is to increase the space. The span of the internal horizontal wall of the existing residential building is not large, so part of the internal wall structure can be removed to increase the indoor space. In order to ensure the safety of the renovation or demolition project, after taking reasonable force support unloading, the internal wall is removed, and the channel steel is installed at the top of the demolished wall. Then, the upper load is all borne by the newly added channel steel, and the newly added channel steel transfers the upper load to the lower part through the channel steel columns on both sides. This method is simple to operate, and can ensure the joint action of the new and old structures, and the quality and safety are guaranteed. Summary of the invention

[0003] Based on the above problems, the present invention proposes a system for reconstructing the existing residential wall-removing and beam-adding structures and a construction method thereof, which solves the problem of narrow indoor space by demolishing the original inner walls and adding new channel steel load-bearing methods.

[0004] The technical solution of the present invention is as follows:

[0005] A system for reconstructing an existing residential building by demolishing walls and adding beams, including an original floor slab, an original inner wall, and newly added channel steels, newly added channel steel columns, and square steel plates. The system for reconstructing an existing residential building by demolishing walls and adding beams is to demolish the original inner wall, unload the upper load before demolishing the original inner wall, and then install the newly added channel steel at the top of the demolished original inner wall by drilling holes and chemically embedding steel bars, and then weld the newly added channel steel to the newly added channel steel columns on both sides close to the original outer wall, so that all the upper loads are carried by the newly added channel steel, and the newly added channel steel then transfers the upper loads to the lower part through the newly added channel steel columns and column feet on both sides. The upper edge of the newly added channel steel is provided with two φ16 through holes every 500mm in the longitudinal direction as required by the drawings, and the spacing between the two through holes is determined by the design drawings; the upper edge of the newly added channel steel abuts against the plaster layer on the bottom surface of the original floor slab; the original floor slab is pre-drilled with two chemical rebar holes every 500mm in the longitudinal direction as required by the drawings for chemical rebar embedding, and the spacing between the two holes corresponds to the spacing between the channel steel through holes; the holes for chemical rebar embedding are filled with adhesive, and the diameter of the holes is D25mm; the diameter of the chemical rebar embedding is 14mm; the two ends of the newly added channel steel are respectively welded to the newly added channel steel columns on both sides; the newly added channel steel column is close to the original exterior wall, and a column foot is provided at the lower part thereof, and the column foot is connected to the newly added channel steel column by welding; the newly added channel steel and the newly added channel steel column are both 16# channel steel; after the upper chemical rebar embedding is completed, the square steel plate is welded to the two flanges of the lower edge of the newly added channel steel.

[0006] A construction method for reconstructing an existing residential wall-removing and beam-adding structural system, the specific steps are as follows:

[0007] Step 1: Use temporary support measures to unload the original top floor slabs on both sides of the original inner wall to be demolished.

[0008] Step 2: Remove the original interior wall and drill holes at the designated positions at the bottom of the original floor slab;

[0009] Step 3: Pre-fabricate the newly added channel steel, draw lines and make holes at the corresponding positions of the newly added channel steel, and the spacing of the holes should correspond to the spacing of the holes drilled at the bottom of the original floor slab;

[0010] Step 4: Apply polymer resin adhesive to the lower side of the original floor slab, stick the newly added channel steel to the lower part of the original floor slab, align the newly added channel steel holes with the drilled holes of the original floor slab, perform chemical rebar planting, and tighten with bolts;

[0011] Step 5: Install the newly added channel steel columns on both sides, and weld the tops of the newly added channel steel columns to both ends of the newly added channel steels;

[0012] Step 6: After the upper chemical reinforcement is completed, the square steel plate is welded to the two flanges of the lower edge of the newly added channel steel.

[0013] Step 7: Remove the temporary support measures in step 1;

[0014] Step 8: Treat exposed steel components with anti-corrosion and anti-rust treatment.

[0015] Beneficial effects: The present invention demolishes the original inner wall by adding new channel steel and new channel steel columns. The new channel steel and new channel steel columns work together with the original structural system to meet the requirements of earthquake resistance and bearing capacity. The present invention can effectively increase the use space of old houses, especially the internal space utilization rate of brick-concrete structure houses. The present invention has a simple structure, clear force transmission, simple and fast construction, and has a good benefit effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Cross-section diagram of the renovation of the existing residential structure by demolishing walls and adding beams.

[0017] Figure 2 Side view of the structure of removing walls and adding beams to an existing residence.

[0018] In the figure, 1: original floor slab; 2: original interior wall; 3: newly added channel steel; 4: drilling; 5: chemical anchoring; 6: square steel plate; 7: newly added channel steel column; 8: column base; 9: original exterior wall; 10: welding. DETAILED DESCRIPTION

[0019] like Figure 1-2As shown, the present invention is a system for reconstructing the existing residential wall-removing and beam-adding structures and a construction method thereof, and its specific implementation method is as follows: A system for reconstructing the existing residential wall-removing and beam-adding structures, comprising an original floor 1, an original inner wall 2, and newly added channel steels 3, newly added channel steel columns 7, and square steel plates 6. The system for reconstructing the existing residential wall-removing and beam-adding structures is to remove the original inner wall 2, unload the upper load before removing the original inner wall 2, and then install the newly added channel steel 3 at the top of the removed original inner wall 2 by drilling 4 and chemically planting steel bars 5, and then weld the newly added channel steel 3 to the newly added channel steel columns 7 on both sides close to the original outer wall 9, so that all the upper loads are borne by the newly added channel steel 3, and the newly added channel steel 3 then transfers the upper loads to the lower part through the newly added channel steel columns 7 and column feet 8 on both sides. The upper edge of the newly added channel steel 3 is provided with two φ16 holes every 500mm in the longitudinal direction according to the requirements of the drawings, and the spacing between the two holes is determined by the design drawings; the upper edge of the newly added channel steel 3 is against the plaster layer on the bottom surface of the original floor slab 1; the original floor slab 1 is pre-drilled with two chemical anchor bolts 5 holes 4 every 500mm in the longitudinal direction according to the requirements of the drawings for chemical anchor bolts 5, and the spacing between the two holes 4 corresponds to the hole spacing of the newly added channel steel 3; the holes 4 of the chemical anchor bolts 5 are filled with an adhesive, and the diameter of the holes 4 is D25mm; the diameter of the chemical anchor bolts 5 is 14mm; the two ends of the newly added channel steel 3 are respectively welded 10 to the newly added channel steel columns 7 on both sides; the newly added channel steel column 7 is close to the original outer wall 9, and a column foot 8 is provided at its lower part, and the column foot 8 is connected to the newly added channel steel column 7 by welding; the newly added channel steel 3 and the newly added channel steel column 7 are both 16# channel steels; after the upper chemical anchor bolts 5 are completed, the square steel plate 6 is welded to the two flanges of the lower edge of the newly added channel steel 3.

[0020] The above-mentioned existing residential wall demolition and beam addition structural reconstruction system and its construction method adopt the following steps:

[0021] Step 1: Temporary support measures are adopted to unload the original floor slabs 1 on the top of both sides of the original inner wall 2 to be demolished.

[0022] Step 2: Remove the original inner wall 2 and drill a hole 4 at a designated position at the bottom of the original floor slab 1;

[0023] Step 3: Pre-fabricate the newly added channel steel 3, draw lines and make holes at the corresponding positions of the newly added channel steel 3, and the spacing of the holes should correspond to the spacing of the holes 4 drilled at the bottom of the original floor slab 1;

[0024] Step 4: Apply polymer resin adhesive to the lower side of the original floor slab 1, stick the newly added channel steel 3 to the lower part of the original floor slab 1, align the holes of the newly added channel steel 3 with the drill holes 4 of the original floor slab 1, perform chemical rebar planting 5, and tighten with bolts;

[0025] Step 5: Install the newly added channel steel columns 7 on both sides, and weld the tops of the newly added channel steel columns 7 to the two ends of the newly added channel steel 3 10;

[0026] Step 6: After the upper chemically embedded reinforcement 5 is completed, the square steel plate 6 is welded to the two flanges at the lower edge of the newly added channel steel 3 .

[0027] Step 7: Remove the temporary support measures in step 1;

[0028] Step 8: Treat exposed steel components with anti-corrosion and anti-rust treatment.

[0029] The above is a typical embodiment of the present invention, and the implementation of the present invention is not limited thereto.

Claims

1. A system for reconstructing existing residential buildings by removing walls and adding beams, characterized in that: The invention comprises an original floor slab (1), an original inner wall (2), a newly added channel steel (3), a newly added channel steel column (7) and a square steel plate (6); the existing residential wall demolition and beam adding structural reconstruction system is to demolish the original inner wall (2), unload the upper load before demolishing the original inner wall (2), and then install the newly added channel steel (3) at the top of the demolished original inner wall (2) by drilling holes (4) and chemically planting steel bars (5), and then weld the newly added channel steel (3) to the newly added channel steel columns (7) on both sides close to the original outer wall (9), so that the upper load is completely borne by the newly added The newly added channel steel (3) is used to bear the load, and the newly added channel steel (3) transfers the upper load to the lower part through the newly added channel steel columns (7) and column feet (8) on both sides; the two ends of the newly added channel steel (3) are respectively welded (10) to the newly added channel steel columns (7) on both sides, and the newly added channel steel columns (7) are close to the original external wall (9) and are provided with column feet (8) at the lower part thereof, and the column feet (8) and the newly added channel steel columns (7) are connected by welding; after the upper chemical reinforcement (5) of the square steel plate (6) is completely completed, the square steel plate (6) is welded to the two flanges at the lower edge of the newly added channel steel (3).

2. The existing residential wall demolition and beam adding structural reconstruction system according to claim 1 is characterized by: The upper edge of the newly added channel steel (3) is provided with two φ16 holes every 500 mm in the longitudinal direction according to the drawing requirements, and the spacing between the two holes is determined by the design drawing. The upper edge of the newly added channel steel (3) abuts against the plaster layer on the bottom surface of the original floor slab (1).

3. The existing residential wall demolition and beam adding structural reconstruction system according to claim 1 is characterized by: The original floor slab (1) is pre-drilled with two chemical reinforcement (5) drilling holes (4) every 500 mm in the longitudinal direction according to the drawing requirements for chemical reinforcement (5), and the spacing between the two drilling holes (4) corresponds to the opening spacing of the newly added channel steel (3).

4. The existing residential wall demolition and beam adding structural reconstruction system according to claim 1 is characterized by: The drill hole (4) of the chemical anchor bar (5) is filled with adhesive, the diameter of the drill hole (4) is 25 mm, and the diameter of the chemical anchor bar (5) is 14 mm.

5. The existing residential wall demolition and beam adding structural reconstruction system according to claim 1 is characterized by: The newly added channel steel (3) and the newly added channel steel column (7) are both 16# channel steel.

6. A construction method for the existing residential wall demolition and beam addition structural reconstruction system according to any one of claims 1 to 5, characterized in that: Use the following steps: Step 1: Unload the original floor slabs (1) on both sides of the original inner wall (2) to be demolished by using temporary support measures; Step 2: Remove the original inner wall (2) and drill a hole (4) at a designated position at the bottom of the original floor slab (1); Step 3: Pre-fabricate the newly added channel steel (3), draw lines and open holes at the corresponding positions of the newly added channel steel (3), and the spacing of the holes should correspond to the spacing of the holes (4) drilled at the bottom of the original floor slab (1); Step 4: Apply a polymer resin adhesive to the lower side of the original floor slab (1), adhere the newly added channel steel (3) to the lower part of the original floor slab (1), align the holes of the newly added channel steel (3) with the drill holes (4) of the original floor slab (1), perform chemical rebar planting (5), and tighten with bolts; Step 5: Install the newly added channel steel columns (7) on both sides, and weld the tops of the newly added channel steel columns (7) to the two ends of the newly added channel steel (3) respectively (10); Step 6: After the upper chemical reinforcement (5) is completely completed, the square steel plate (6) is welded to the two flanges at the lower edge of the newly added channel steel (3); Step 7: Remove the temporary support measures in step 1; Step 8: Treat exposed steel components with anti-corrosion and anti-rust treatment.

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