Existing plate-type balcony reinforced by square steel pipe supporting columns and channel steel brackets and construction method of existing plate-type balcony

Abstract

The invention relates to an existing plate-type balcony reinforced by a square steel pipe strut and a channel steel bracket and a construction method thereof. The existing plate-type balcony comprises the square steel pipe strut, a through long channel steel plate, a lower steel base plate, an expansion bolt and a steel plate wedge; through long groove steel plates and lower steel base plates are welded to the two ends of the square steel pipe supporting columns and tightly abut against a balcony plate on the top layer and a balcony plate on the current layer respectively; the through long channel steel plate is fixed to the bottom face of the balcony plate in the mode that expansion bolts penetrate through the channel steel plate installation holes. The lower steel base plate penetrates through expansion bolts through base plate installation holes to be fixed to the balcony plate, latex cement paste is arranged between the lower steel base plate and the balcony plate, and meanwhile a steel plate wedge is adopted for wedging. The structural stress system of an original balcony is changed, the square steel tube supporting columns are arranged layer by layer from bottom to top, and the bearing capacity of the balcony structure can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of plate balcony of existing structure, using square steel pipe support and channel steel support reinforcement and its construction method, belong to the technical field of ductile building research. BACKGROUND

[0002] With the gradual improvement of urban living standards, economic conditions continue to improve, people's quality of life is also increasingly high. Many existing building communities in China, because of its planning and construction early, need to be reinforced. And balcony is an important part of the house, is also an important place for people's daily life, its safety is particularly important. Due to the long-term load, aging and other problems, balcony floor often appear different degrees of tilt and cracks, seriously affect the life safety. The main problem of the balcony is that the design load is smaller than the actual use value, the calculation method does not completely match the actual structure stress, and the stress reinforcement is generally downward, therefore, the safety and reliability of the balcony structure is generally low, and it needs to be reinforced. Therefore, reinforcing the balcony structure in the existing building community has become an important problem to be solved in the current seismic reinforcement. SUMMARY

[0003] The present application provides a square steel pipe support and channel steel support reinforcement and its construction method for the plate balcony of existing structure, mainly to improve the overall seismic capacity of the original structure balcony, so as to enhance the toughness of the house and prevent the balcony from falling off.

[0004] The technical scheme of the present application is as follows:

[0005] The square steel pipe support and channel steel support reinforcement and its construction method for the plate balcony of existing structure, characterized in that: it comprises a square steel pipe support, a through channel steel plate, a lower steel backing plate, an expansion bolt and a steel plate wedge; the square steel pipe support is a cold-bent thin-walled square steel pipe; the square steel pipe support is welded with a through channel steel plate and a lower steel backing plate at both ends; the through channel steel plate and the lower steel backing plate are welded on the channel steel plate welding area and the backing plate welding area respectively; the channel steel plate mounting holes on the through channel steel plate are spaced 300mm apart; the lower steel backing plate has two backing plate mounting holes; the through channel steel plate and the lower steel backing plate welded at both ends of the square steel pipe support are tightly topped with the upper balcony plate and the balcony plate of the current layer respectively; the through channel steel plate is fixed on the bottom surface of the balcony plate through the expansion bolt passing through the channel steel plate mounting hole; the lower steel backing plate is fixed on the balcony plate through the expansion bolt passing through the backing plate mounting hole, and the space is filled with latex cement paste, and a steel plate wedge is used to wedge tightly.

[0006] Further, the square steel pipe support is a cold-bent thin-walled square steel pipe with a cross-sectional size of □50x3-80x4.

[0007] Further, the length of the channel steel plate is φ12, and the channel steel plate is a φ12 hole for installing the channel steel plate.

[0008] Further, the lower steel base plate is a 2φ14 hole for installing the base plate, and the lower steel base plate is a cold-rolled steel plate with an outer dimension of 140mm*120mm and a thickness of not less than 10mm.

[0009] Further, the length of the channel steel plate is φ10, and the channel steel plate is fixed to the bottom surface of the balcony plate by using an expansion bolt.

[0010] Further, the lower steel base plate is fixed to the balcony plate by using an expansion bolt.

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

[0012] The existing plate-type balcony adopts square steel pipe support and channel steel support reinforcement and the construction method thereof, and the following steps are adopted:

[0013] Step one: according to the design drawing, the expansion bolt holes are pre-drilled on the bottom surface of the balcony plate, and the hole diameter is matched with the diameter of the pre-installed expansion bolt;

[0014] Step two: according to the design drawing, the expansion bolt holes are drilled on the balcony plate, and the hole diameter is matched with the diameter of the pre-installed expansion bolt;

[0015] Step three: the installation holes of the length of the channel steel plate and the lower steel base plate welded at both ends of the square steel pipe support are positioned at the positions of the previously drilled expansion bolt holes, the expansion bolts are inserted into the installation holes and tightened, and the lower steel base plate is pre-seated with cement slurry before installation;

[0016] Step four: the steel plate wedge is wedged between the lower steel base plate and the balcony plate.

[0017] Beneficial effects:

[0018] The most significant advantage of the present application is that the existing plate-type balcony adopts square steel pipe support and channel steel support reinforcement to change the structure stress system of the original balcony; from bottom to top, the square steel pipe support is arranged layer by layer, which can effectively improve the bearing capacity of the balcony structure. The method is simple and reliable, can improve the overall seismic capacity of the balcony structure, thereby enhancing the overall toughness of the house, avoiding the collapse or falling off of the balcony; the square steel pipe support and the channel steel support reinforcement of the existing balcony are simple in construction, reasonable in structure stress, and have good economic and environmental benefits. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The planar schematic view of the square steel pipe support and the channel steel support reinforcement for the existing plate-type balcony;

[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] For existing slab balconies reinforced with square steel pipe columns and channel steel supports, and their construction methods, please refer to [link to relevant documentation]. Figures 1 to 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. The reinforcement method for existing slab balconies using square steel pipe columns and channel steel supports, and its construction method, characterized in that: The structure 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 steel pad (5) has two pad mounting holes (8); the long 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 balcony slab (3) of this layer; the long 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, and its construction method, is 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, and its construction method, is 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, and its construction method, 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, and its construction method, 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, and its construction method, 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, and its construction method, characterized in that: The steel plate wedge (7) has a width of 50mm and a thickness of 2mm to 10mm.

8. The existing slab balcony reinforced with square steel pipe columns and channel steel supports according to any one of claims 1 to 7, and the construction method thereof, characterized in that: The following steps are used: Step 1: According to the design drawings, pre-drill expansion bolt holes on the bottom surface of the balcony slab (3), and the hole diameter matches the diameter of the pre-installed expansion bolts (6); Step 2: According to the design drawings, drill expansion bolt holes on the balcony slab (3), and the hole diameter should match the diameter of the pre-installed expansion bolts (6); Step 3: Position the mounting holes of the continuous channel steel plate (4) and the lower steel pad plate (5) welded at 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. The lower steel pad plate (5) should be pre-filled with latex cement grout before installation. Step 4: Wed the lower steel pad (5) and the balcony slab (3) with a steel wedge (7).

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