Steel plate reinforcement and construction method for indoor newly-added single-face wall-leaning exhaust duct floor punching

Abstract

The invention relates to a steel plate reinforcement and construction method for indoor newly-added single-face wall-leaning exhaust passage floor holing, which mainly aims at holing at proper positions of floors of an existing house without a vertical exhaust passage, and reinforcing holing parts by adopting a steel plate bonding and anchor bolt reinforcement mode. Comprising transverse steel plates, vertical steel plates, wall anchor bolts, short angle steel and floor anchor bolts. The vertical steel plates are adhered to the inner layers of the bottom surfaces of the floor slabs on the two sides of the hole; the transverse steel plate is adhered to the outermost layer of the two vertical steel plates on the bottom surface of the floor slab; before the two vertical steel plates are pasted, the floor needs to be slotted at the bottom face pasting position of the floor. The two vertical steel plates and the wall body are fixed in a short angle steel welding mode. The short angle steel is fixedly connected with the wall body through a wall body anchor bolt; the vertical steel plates, the transverse steel plates and the floor slabs are further fixed through floor slab anchor bolts.

Description

TECHNICAL FIELD

[0001] The application relates to a steel plate reinforcing method for indoor newly-added single-wall-adjacent exhaust passage floor hole and a construction method thereof, and belongs to the technical field of old community comprehensive reconstruction. BACKGROUND

[0002] The indoor newly-added exhaust passage is mainly used for cutting holes in the floor at appropriate positions of existing houses without vertical exhaust passages, and reinforcing the hole positions. The indoor newly-added exhaust passage of the existing building should be cut in the floor according to the sectional size of the pre-installed exhaust passage. The floor hole reinforcing should be carried out by using different reinforcing methods according to the properties of the floor (beam floor, beamless floor, simply supported plate, continuous plate, one-way plate, two-way plate, prestressed plate and non-prestressed plate), the hole positions (edge and middle), the hole size and shape and the like. After the floor hole is cut, the original force transmission path and the reinforcement are partially cut off, so that the internal force analysis and the bearing capacity checking of the structure after the hole is cut are carried out. According to the calculation results, the hole reinforcing design is carried out. After the floor hole is cut, the internal force of the surrounding plate of the hole is increased, stress concentration is caused, the plate reinforcement is reduced and the bearing capacity is reduced, so that the internal force analysis and the bearing capacity checking of the structure after the hole is cut are carried out. The application mainly relates to the steel plate reinforcing method for the indoor newly-added single-wall-adjacent exhaust passage floor hole. SUMMARY

[0003] The application provides the steel plate reinforcing method for the indoor newly-added single-wall-adjacent exhaust passage floor hole and the construction method thereof, which is mainly used for cutting holes in the floor at appropriate positions of existing houses without vertical exhaust passages, the exhaust passage is installed in the form of single-wall-adjacent, and the hole positions are reinforced by using the steel plate sticking and anchor bolt reinforcing method.

[0004] The application adopts the following technical scheme:

[0005] The steel plate reinforcing method for the indoor newly-added single-wall-adjacent exhaust passage floor hole and the construction method thereof, as shown in FIG. 1, comprises horizontal steel plates, vertical steel plates, wall anchors, short angle steels and floor anchors. Figures 1-2 The vertical steel plates are small in stress and are stuck to the inner layer of the floor bottom surfaces on both sides of the hole. The horizontal steel plates are large in stress and are stuck to the outer layer of the two vertical steel plates on the floor bottom surface. The two vertical steel plates need to be slotted on the floor bottom surface before being stuck, and the slotting depth is the thickness of the vertical steel plate + 3mm. The two vertical steel plates are fixed by using the short angle steel welding method between the two vertical steel plates and the wall. The short angle steel is fixed and connected with the wall by using the wall anchor. The vertical steel plates and the horizontal steel plates are fixed by using the floor anchor in addition to being stuck. The overlapping parts between the two vertical steel plates and the horizontal steel plate are welded.

[0006] Further, the short angle steel is composed of L50x5 equilateral angle steels.

[0007] Further, the vertical steel plate and the horizontal steel plate are both Q235B steel plates with a thickness of 5 mm and a width of 150 mm.

[0008] Further, the wall anchor and the floor anchor are both M10 bolts, and the hole diameter drilled in the wall or the floor is 14 mm, and the epoxy resin glue is implanted.

[0009] Further, the vertical steel plate, the horizontal steel plate and the floor are adhered by using cement polymer grouting liquid.

[0010] The above-mentioned indoor newly-added single-face wall-adjacent exhaust passage floor hole reinforcing by using steel plates and the construction method thereof have the following specific implementation steps:

[0011] Step one: according to the design drawing, prepare the horizontal steel plate, the vertical steel plate, the wall anchor, the short angle steel and the floor anchor, and pre-weld the short angle steel at one end of the two vertical steel plates.

[0012] Step two: groove, blow dust and wet the floor at the two sides of the floor surface, and adhere the two vertical steel plates.

[0013] Step three: according to the design drawing, drill holes, blow powder at the positions of the wall and the floor, and implant the wall anchor and the floor anchor.

[0014] Step four: adhere the horizontal steel plate at the floor surface.

[0015] Step five: fix the horizontal steel plate and the two vertical steel plates on the floor by using the floor anchor, and fix the short angle steel at the end of the two vertical steel plates on the wall by using the wall anchor.

[0016] Step six: weld the overlapping parts of the horizontal steel plate and the two vertical steel plates.

[0017] Step seven: perform rust-proof treatment on the exposed horizontal steel plate, vertical steel plate, wall anchor, short angle steel and floor anchor.

[0018] Beneficial effects:

[0019] The indoor newly-added single-face wall-adjacent exhaust passage floor hole reinforcing by using steel plates can bear the tensile stress generated due to the floor hole, and can improve the strength and toughness of the periphery of the floor hole. The method is simple in construction, safe and reliable, and can also reduce the engineering cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a top view of the indoor newly-added single-face wall-adjacent exhaust passage floor hole reinforcing by using steel plates;

[0021] Figure 2 is Figure 1 A-A sectional view.

[0022] In the figure, 1: transverse steel plate; 2: vertical steel plate; 3: wall anchor; 4: short angle steel; 5: floor anchor; 6: wall; 7: floor. DETAILED DESCRIPTION

[0023] The specific embodiment of the present application is as follows:

[0024] The indoor newly added single-sided wall exhaust duct floor opening hole is reinforced by a steel plate, and the construction method thereof is as shown in the figure, which is characterized by comprising a transverse steel plate 1, a vertical steel plate 2, a wall anchor 3, a short angle steel 4, and a floor anchor 5. Figures 1-2 The vertical steel plate 2 is less stressed and is pasted on the inner layer of the bottom surface of the floor 7 on both sides of the hole; the transverse steel plate 1 is more stressed and is pasted on the outermost layer of the two vertical steel plates 2 on the bottom surface of the floor 7; the two vertical steel plates 2 need to be slotted on the bottom surface of the floor 7 before being pasted, and the slotting depth is the thickness of the vertical steel plate 2 + 3 mm thick; the two vertical steel plates 2 and the wall 6 are fixed by welding the short angle steel 4; the short angle steel 4 and the wall 6 are fixed and connected by the wall anchor 3; the vertical steel plate 2 and the transverse steel plate 1 are connected with the floor 7 by pasting and fixing by the floor anchor 5; and the overlapping part between the two vertical steel plates 2 and the transverse steel plate 1 is welded.

[0025] Further, the short angle steel 4 is composed of an isosceles angle steel of L50x5.

[0026] Further, the thickness of the vertical steel plate 2 and the transverse steel plate 1 is 5 mm, and the width is 150 mm of Q235B steel plate.

[0027] Further, the wall anchor 3 and the floor anchor 5 are both M10 bolts, and the hole diameter drilled on the wall 6 or the floor 7 is 14 mm, and the epoxy resin glue is implanted.

[0028] Further, the pasting of the vertical steel plate 2 and the transverse steel plate 1 with the floor 7 is performed by cement polymer grouting liquid.

[0029] The specific implementation steps of the above-mentioned indoor newly added single-sided wall exhaust duct floor opening hole reinforced by a steel plate and the construction method thereof are as follows:

[0030] Step one: prepare the transverse steel plate 1, the vertical steel plate 2, the wall anchor 3, the short angle steel 4, and the floor anchor 5 according to the design drawing, and pre-weld the short angle steel 4 at one end of the two vertical steel plates 2.

[0031] Step two: slot, blow dust, and wet the floor 7 at the pasting position on both sides of the bottom surface of the floor 7, and paste the two vertical steel plates 2.

[0032] Step three: according to the design drawings, drill holes, blow powder at the position of the wall 6 and the floor 7, and implant the wall anchor 3 and the floor anchor 5.

[0033] Step four: paste the transverse steel plate 1 at the bottom surface of the floor 7.

[0034] Step five: use the floor anchor 5 to fix the transverse steel plate 1 and the two vertical steel plates 2 on the floor 7; use the wall anchor 3 to fix the short angle steel 4 welded at the end of the two vertical steel plates 2 on the wall 6.

[0035] Step six: weld the overlapping part of the transverse steel plate 1 and the two vertical steel plates 2.

[0036] Step seven: perform rust-proof treatment on the exposed transverse steel plate 1, vertical steel plate 2, wall anchor 3, short angle steel 4, floor anchor 5, etc.

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

Claims

1. The method for reinforcing newly added single-sided wall-mounted exhaust duct floor openings with steel plates and its construction method, characterized by: It includes a horizontal steel plate (1), a vertical steel plate (2), a wall anchor (3), a short angle steel (4), and a floor slab anchor (5); the vertical steel plate (2) is subjected to less force and is pasted on the inner layer of the bottom surface of the floor slab (7) on both sides of the opening; the horizontal steel plate (1) is subjected to greater force and is pasted on the outermost layer of the two vertical steel plates (2) on the bottom surface of the floor slab (7); before pasting the two vertical steel plates (2), the floor slab (7) needs to be grooved at the surface of the bottom surface of the floor slab (7), and the groove depth is vertical. The thickness of the steel plate (2) is +3mm; the two vertical steel plates (2) are fixed to the wall (6) by welding short angle steel (4); the short angle steel (4) is fixed to the wall (6) by wall anchor bolts (3); the vertical steel plate (2), the horizontal steel plate (1) are fixed to the floor slab (7) by pasting and floor anchor bolts (5); the overlap between the two vertical steel plates (2) and the horizontal steel plate (1) is welded.

2. The method for reinforcing indoor single-sided wall-mounted exhaust duct floor slab openings with steel plates and its construction method as described in claim 1, characterized in that: The short angle steel (4) is composed of L50×5 equilateral angle steel.

3. The method for reinforcing indoor single-sided wall-mounted exhaust duct floor slab openings with steel plates and its construction method as described in claim 1, characterized in that: The vertical steel plate (2) and the horizontal steel plate (1) are both Q235B steel plates with a thickness of 5mm and a width of 150mm.

4. The method for reinforcing indoor single-sided wall-mounted exhaust duct floor slab openings with steel plates and its construction method as described in claim 1, characterized in that: The wall anchors (3) and floor anchors (5) are both M10 bolts. The diameter of the hole drilled in the wall (6) or floor (7) is 14mm, and epoxy resin is inserted.

5. The method for reinforcing indoor single-sided wall-mounted exhaust duct floor slab openings with steel plates and its construction method as described in claim 1, characterized in that: The vertical steel plate (2), the horizontal steel plate (1) and the floor slab (7) are bonded together using cement polymer grout.

6. The method for reinforcing indoor single-sided wall-mounted exhaust duct floor openings with steel plates and its construction method according to any one of claims 1-5, characterized in that: The following steps are used: Step 1: Prepare horizontal steel plate (1), vertical steel plate (2), wall anchor bolt (3), short angle steel (4), and floor anchor bolt (5) according to the design drawings, and weld short angle steel (4) to one end of the two vertical steel plates (2) in advance. Step 2: Grooving, dusting, and wetting the floor slab (7) on both sides of the bottom surface, and pasting two vertical steel plates (2). Step 3: Drill holes and apply powder to the wall (6) and floor slab (7) according to the design drawings, and insert wall anchors (3) and floor slab anchors (5). Step 4: Paste the horizontal steel plate (1) on the bottom surface of the floor slab (7). Step 5: Use floor anchor bolts (5) to fix the horizontal steel plate (1) and two vertical steel plates (2) to the floor slab (7); use wall anchor bolts (3) to fix the short angle steel (4) welded to the ends of the two vertical steel plates (2) to the wall (6). Step 6: Weld the horizontal steel plate (1) to the two vertical steel plates (2) at their joints. Step 7: Apply rust prevention treatment to the exposed horizontal steel plates (1), vertical steel plates (2), wall anchors (3), short angle steel (4), floor anchors (5), etc.

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