The existing plate balcony is reinforced by square steel pipe support and channel steel support

Abstract

This utility model relates to a method for reinforcing existing slab balconies using square steel pipe supports and channel steel brackets. The method includes square steel pipe supports, continuous channel steel plates, lower steel pads, expansion bolts, and steel wedges. The square steel pipe supports have continuous channel steel plates welded to both ends, and the lower steel pads are tightly fitted against the upper and lower balcony slabs, respectively. The continuous channel steel plates are fixed to the bottom surface of the balcony slab through expansion bolts via mounting holes. The lower steel pads are fixed to the balcony slab through expansion bolts via mounting holes, with latex cement grout filling the space between them, and further secured with steel wedges. This utility model alters the original balcony's structural load-bearing system by installing square steel pipe supports layer by layer from bottom to top, effectively improving the balcony's structural load-bearing capacity.

Description

Technical Field

[0001] This utility model relates to a method for reinforcing existing slab balconies with square steel pipe columns and channel steel supports, belonging to the technical field of resilient building research. Background Technology

[0002] With the gradual improvement of urban living standards and economic conditions, people's demands for quality of life are also increasing. Many existing residential buildings in my country were constructed in the 1980s and 1990s. Due to their early planning and construction, and relatively low construction standards, they suffer from various problems such as aging equipment, peeling building facades, and poor energy-saving insulation, requiring reinforcement and renovation. Balconies are an important component of buildings and a vital space for daily life, making their safety particularly important. Due to long-term load-bearing and aging, balcony slabs often exhibit varying degrees of tilting and cracks, seriously affecting the safety of residents. Currently, the main problems with balconies are that the design load is lower than the actual usage value, the calculation method does not fully match the actual structural stress, and the reinforcing steel bars generally shift downwards. Therefore, the structural safety and reliability of balconies are generally low, necessitating reinforcement. Thus, reinforcing balcony structures in existing residential buildings has become a crucial issue that urgently needs to be addressed in seismic reinforcement. Utility Model Content

[0003] This utility model proposes to reinforce existing slab balconies with square steel pipe columns and channel steel supports, mainly to improve the overall seismic resistance of the original balcony structure, thereby enhancing the toughness of the building and preventing the balcony from falling off.

[0004] The technical solution of this utility model is as follows:

[0005] The existing slab-type balcony is reinforced with square steel pipe supports and channel steel supports. Its features include: square steel pipe supports, a continuous channel steel plate, a lower steel pad, expansion bolts, and steel wedges; the square steel pipe supports are made of cold-formed thin-walled square steel pipes; a continuous channel steel plate and a lower steel pad are welded to both ends of the square steel pipe supports; the continuous channel steel plate and the lower steel pad are respectively welded to the channel steel plate welding area and the pad welding area; the channel steel plate mounting holes on the continuous channel steel plate are spaced 300mm apart; the lower steel pad has two pad mounting holes; the continuous channel steel plate and the lower steel pad welded to both ends of the square steel pipe supports are tightly abutted against the upper balcony slab and the current balcony slab, respectively; the continuous channel steel plate is fixed to the bottom surface of the balcony slab through the channel steel plate mounting holes and expansion bolts; the lower steel pad is fixed to the balcony slab through the pad mounting holes and expansion bolts, with latex cement grout between them, and simultaneously wedged tightly with steel wedges.

[0006] Furthermore, the cross-sectional dimensions of the square steel pipe support are cold-formed thin-walled square steel pipes with dimensions ranging from □50×3 to 80×4.

[0007] Furthermore, the continuous channel steel plate is made of [8] channel steel, and the continuous channel steel plate has φ12 channel steel plate mounting holes.

[0008] Furthermore, the lower steel pad has external dimensions of 140mm×120mm and is made of cold-rolled steel plate with a thickness of not less than 10mm. The lower steel pad has 2φ14 pad mounting holes.

[0009] Furthermore, the continuous channel steel plate is fixed to the bottom surface of the balcony slab using φ10 expansion bolts.

[0010] Furthermore, the lower steel pad is fixed to the balcony panel using φ12 expansion bolts.

[0011] Furthermore, the steel plate wedge has a width of 50mm and a thickness of 2mm to 10mm.

[0012] The above-mentioned existing slab balconies are reinforced with square steel pipe columns and channel steel supports, and the construction method is as follows:

[0013] Step 1: According to the design drawings, pre-drill expansion bolt holes on the bottom surface of the balcony slab, with the hole diameter matching the diameter of the expansion bolts to be installed;

[0014] Step 2: According to the design drawings, drill holes for expansion bolts on the balcony slab, ensuring the hole diameter matches the diameter of the pre-installed expansion bolts;

[0015] Step 3: Position the mounting holes of the welded continuous channel steel plates and the lower steel pad plate at both ends of the square steel pipe support, corresponding to the positions of the previously drilled expansion bolts. Insert the expansion bolts into the mounting holes and tighten them. Before installing the lower steel pad plate, pre-fill it with latex cement grout.

[0016] Step 4: Wed the lower steel pad and the balcony slab tightly with steel wedges.

[0017] Beneficial effects:

[0018] The most significant advantage of this invention lies in its reinforcement of existing slab balconies using square steel pipe supports and channel steel brackets, thus altering the original structural stress system. By installing square steel pipe supports layer by layer from bottom to top, the load-bearing capacity of the balcony structure can be effectively improved. This method is simple and reliable, enhancing the overall seismic resistance of the balcony structure, thereby strengthening the overall resilience of the building and preventing balcony collapse or detachment. Reinforcing existing balconies with square steel pipe supports and channel steel brackets is easy to construct, has a reasonable structural stress distribution, and offers good economic and environmental benefits. Attached Figure Description

[0019] Figure 1 A schematic diagram of the reinforcement of existing slab balconies using square steel pipe columns and channel steel supports.

[0020] Figure 2 for Figure 1 AA cross-section view;

[0021] Figure 3 for Figure 2 Enlarged view of point B;

[0022] Figure 4 This is a structural diagram of a continuous channel steel plate;

[0023] Figure 5 This is a structural diagram of the lower steel pad.

[0024] In the diagram, 1: square steel pipe support; 2: brick wall; 3: balcony slab; 4: continuous channel steel plate; 5: lower steel pad; 6: expansion bolt; 7: steel plate wedge; 8: pad mounting hole; 9: pad welding area; 10: channel steel plate mounting hole; 11: channel steel plate welding area; 12: balcony door. Detailed Implementation

[0025] Existing slab balconies are reinforced with square steel pipe columns and channel steel supports. (See attached image) Figures 1-5 As shown, the feature is that it includes a square steel pipe support 1, a continuous channel steel plate 4, a lower steel pad 5, expansion bolts 6, and steel plate wedges 7; the square steel pipe support 1 is made of cold-formed thin-walled square steel pipe; the continuous channel steel plate 4 and the lower steel pad 5 are welded to both ends of the square steel pipe support 1; the continuous channel steel plate 4 and the lower steel pad 5 are respectively welded to the channel steel plate welding area 11 and the pad welding area 9; the channel steel plate mounting holes 10 on the continuous channel steel plate 4 are spaced 300mm apart; the lower steel pad 5 has two pad mounting holes 8; the continuous channel steel plate 4 and the lower steel pad 5 welded to both ends of the square steel pipe support 1 are tightly pressed against the upper balcony slab and the current balcony slab 3 respectively; the continuous channel steel plate 4 is fixed to the bottom surface of the balcony slab 3 through the channel steel plate mounting holes 10 and the expansion bolts 6; the lower steel pad 5 is fixed to the balcony slab 3 through the pad mounting holes 8 and the expansion bolts 6, with latex cement grout between them, and is simultaneously wedged tightly with steel plate wedges 7.

[0026] Furthermore, the square steel pipe support 1 has a cross-sectional dimension of □50×3~80×4 and is a cold-formed thin-walled square steel pipe.

[0027] Furthermore, the continuous channel steel plate 4 is made of [8] channel steel, and the continuous channel steel plate 4 has φ12 channel steel plate mounting holes 10.

[0028] Furthermore, the lower steel pad 5 has external dimensions of 140mm×120mm and is made of cold-rolled steel plate with a thickness of not less than 10mm. The lower steel pad 5 has 2φ14 pad mounting holes 8.

[0029] Furthermore, the continuous channel steel plate 4 is fixed to the bottom surface of the balcony plate 3 using φ10 expansion bolts 6.

[0030] Furthermore, the lower steel pad 5 is fixed to the balcony panel 3 using φ12 expansion bolts 6.

[0031] Furthermore, the steel plate wedge 7 has a width of 50mm and a thickness of 2mm to 10mm.

[0032] The above-mentioned existing slab balconies are reinforced with square steel pipe columns and channel steel supports, and the construction method is as follows:

[0033] Step 1: According to the design drawings, pre-drill expansion bolt holes on the bottom surface of balcony slab 3, with the hole diameter matching the diameter of the pre-installed expansion bolt 6;

[0034] Step 2: According to the design drawings, drill expansion bolt holes on balcony slab 3, with the hole diameter matching the diameter of the pre-installed expansion bolts 6;

[0035] Step 3: Position the mounting holes of the continuous channel steel plate 4 and the lower steel pad 5, which are welded to both ends of the square steel pipe support 1, in the positions of the previously drilled expansion bolts 6. Insert the expansion bolts 6 into the mounting holes and tighten them. Before installing the lower steel pad 5, it is necessary to pre-fill it with latex cement grout.

[0036] Step 4: Wed the lower steel pad 5 and the balcony slab 3 tightly with steel wedges 7.

[0037] The above is a typical embodiment of the present invention, and the specific implementation of the present invention is not limited thereto.

Claims

1. Existing slab balconies are reinforced with square steel pipe columns and channel steel supports, characterized in that: The system includes a square steel pipe support (1), a continuous channel steel plate (4), a lower steel pad (5), expansion bolts (6), and steel plate wedges (7); the square steel pipe support (1) is made of cold-formed thin-walled square steel pipe; the square steel pipe support (1) has a continuous channel steel plate (4) and a lower steel pad (5) welded to both ends; the continuous channel steel plate (4) and the lower steel pad (5) are respectively welded to the channel steel plate welding area (11) and the pad welding area (9); the channel steel plate mounting holes (10) on the continuous channel steel plate (4) are spaced 300mm apart; The lower steel pad (5) has two pad mounting holes (8); the continuous channel steel plate (4) and the lower steel pad (5) welded to both ends of the square steel pipe support (1) are respectively tightly pressed against the upper balcony slab and the current balcony slab (3); the continuous channel steel plate (4) is fixed to the bottom surface of the balcony slab (3) through the channel steel plate mounting hole (10) and the expansion bolt (6); the lower steel pad (5) is fixed to the balcony slab (3) through the pad mounting hole (8) and the expansion bolt (6), with latex cement grout in between, and steel plate wedges (7) are used to wedge it tightly.

2. The existing slab balcony reinforced with square steel pipe columns and channel steel supports as described in claim 1, characterized in that: The square steel pipe support (1) has a cross-sectional dimension of 50×3~80×4 and is a cold-formed thin-walled square steel pipe.

3. The existing slab balcony reinforced with square steel pipe columns and channel steel supports as described in claim 1, characterized in that: The continuous channel steel plate (4) is made of [8] channel steel, and the continuous channel steel plate (4) has φ12 channel steel plate mounting holes (10).

4. The existing slab balcony reinforced with square steel pipe columns and channel steel supports as described in claim 1, characterized in that: The lower steel pad (5) has an outer dimension of 140mm×120mm and a thickness of not less than 10mm. The lower steel pad (5) has 2φ14 pad mounting holes (8).

5. The existing slab balcony reinforced with square steel pipe columns and channel steel supports as described in claim 1, characterized in that: The long channel steel plate (4) is fixed to the bottom surface of the balcony plate (3) using φ10 expansion bolts (6).

6. The existing slab balcony reinforced with square steel pipe columns and channel steel supports as described in claim 1, characterized in that: The lower steel pad (5) is fixed to the balcony panel (3) with φ12 expansion bolts (6).

7. The existing slab balcony reinforced with square steel pipe columns and channel steel supports as described in claim 1, characterized in that: The steel plate wedge (7) has a width of 50mm and a thickness of 2mm to 10mm.

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