CN204940224U - Pre-buried steel sheet suitable for wood pattern - Google Patents

Abstract

The utility model provides a pre-embedded steel plate suitable for wooden formwork, including wooden formwork, pre-embedded steel plates, tie bars, bolts, square wood, and nuts; The template and the pre-embedded steel plate cooperate with nuts to fix the wooden formwork and the pre-embedded steel plate. The utility model uses bolts to apply a pressure between the embedded steel plate and the wooden formwork, so that the surface of the embedded steel plate and the wooden formwork can be closely attached, and a steel backing plate and square wood are added between the nut and the wooden formwork to make The force is uniform, which avoids the displacement of the pre-embedded steel plate during the concrete pouring and vibrating construction process; furthermore, avoids the need to manually remove the concrete on the surface of the pre-embedded steel plate due to the inability of the pre-embedded steel plate to be firmly attached to the surface of the formwork Furthermore, after the concrete on the surface of the pre-embedded steel plate is manually chiseled out, the surface of the pre-embedded steel plate will be inconsistent with the flatness of the concrete surface, which will cause difficulties in the welding of the steel structure in the later stage. This problem will be avoided after the utility model is adopted.

Description

A pre-embedded steel plate suitable for wooden formwork

technical field

The utility model relates to a pre-embedded steel plate suitable for wooden formwork, which belongs to the technical field of hydropower engineering.

Background technique

In buildings such as power plants, dams, and water inlets of hydropower projects, it is often necessary to pre-embed steel plates when pouring concrete structures, as welding points for steel structures such as cable bridges, railings, and door slots. The traditional method is to spot-weld the pre-embedded steel plates with tension bars to the structural steel bars after the structural steel bars are bound, then set up the formwork, and then pour concrete. Since the vertical formwork is carried out after the pre-embedded steel plate is positioned, it is often difficult for the surface of the pre-embedded steel plate to adhere to the formwork due to the inaccurate positioning of the pre-embedded steel plate and the inability to fix it firmly. As a result, the pre-embedded steel plate cannot be exposed to the concrete surface after the concrete is poured and the formwork is removed. In order to solve the problem, the concrete must be removed manually so that the embedded steel plate is exposed on the concrete surface, which is time-consuming and labor-intensive. Moreover, after the concrete on the surface of the pre-embedded steel plate is chiseled off, there is a height difference between the surface of the concrete and the surface of the pre-embedded steel plate, which causes difficulties in the welding operation between the steel structure and the pre-embedded steel plate.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a kind of pre-embedded steel plate suitable for wooden formwork, and the pre-embedded steel plate suitable for wooden formwork makes the surface of the pre-embedded steel plate close to the surface of wooden formwork through bolt fastening force. The pre-embedded steel plate is firmly and accurately positioned on the wooden formwork, and it ensures that the pre-embedded steel plate can expose the surface of the structural concrete, eliminating the need to manually chisel out the concrete on the surface of the pre-embedded steel plate, and reducing the welding work between the steel structure and the pre-embedded steel plate difficulty.

The utility model is realized through the following technical solutions.

The utility model provides a pre-embedded steel plate suitable for wooden formwork, including wooden formwork, pre-embedded steel plate, tie bars, bolts, square wood, and nuts; The formwork and the pre-embedded steel plate cooperate with nuts to fix the wooden formwork and the pre-embedded steel plate; the ends of the tie bars are welded on the other surface of the pre-embedded steel plate relative to the wooden formwork; the number of the tie bars is more than two; On the other surface of the wooden form relative to the embedded steel plate, square timber is also fixed between the wooden form and the nut.

It also includes a steel backing plate, which is fixed between the nut and the square wood; on the contact surface between the steel backing plate and the square wood, the steel backing plate completely covers the square wood.

The length of the square timber is greater than or equal to the width of the wooden formwork.

The diameter of the bolt is 20mm, the length is 20cm, and the model is M16.

The embedded steel plate is a Q235 steel plate with a thickness of 20mm.

The length of the tie bars is greater than 50cm, the material is rebar, and the diameter is 20mm.

The wood formwork is made of wood plywood with a thickness of 1 cm.

The beneficial effect of the utility model is that the bolts are used to apply a pressure between the embedded steel plate and the wooden formwork, so that the surface of the embedded steel plate and the wooden formwork can be closely attached, and a steel backing plate is added between the nut and the wooden formwork , square wood to make it evenly stressed, avoiding the displacement of the pre-embedded steel plate during the concrete pouring and vibrating construction process; further, avoiding the need to manually remove the pre-embedded steel plate due to the insecure fixation of the pre-embedded steel plate and the inability to cling to the surface of the formwork The operation of the concrete on the surface of the steel plate; further, after manually removing the concrete on the surface of the embedded steel plate, the surface of the embedded steel plate will be inconsistent with the flatness of the concrete surface, which will cause difficulties in the welding of the steel structure in the later stage. This problem will be avoided after the utility model is adopted happened.

Description of drawings

Fig. 1 is a cross-sectional structure schematic diagram of the present utility model, namely A-A plane sectional view in Fig. 2;

Fig. 2 is the longitudinal sectional structure schematic diagram of the present utility model, promptly B-B plane sectional view among Fig. 1;

Fig. 3 is the front view of the utility model perpendicular to the surface of the pre-embedded steel plate suitable for wood formwork, that is, the C-C plane sectional view in Fig. 1 and Fig. 2 .

In the figure: 1-wood formwork, 2-embedded steel plate, 3-tension bar, 4-bolt, 5-square wood, 6-steel backing plate, 7-nut, 8-structural concrete.

detailed description

The technical solution of the utility model is further described below, but the scope of protection is not limited to the description.

A kind of pre-embedded steel plate suitable for wooden formwork as shown in Fig. 1 to Fig. 3, comprises wooden formwork 1, pre-embedded steel plate 2, tension bar 3, bolt 4, square timber 5, nut 7; Described wooden formwork 1 and The surface of the pre-embedded steel plate 2 is close to the surface, and the bolt 4 passes through the wooden formwork 1 and the pre-embedded steel plate 2 and cooperates with the nut 7 to fix the wooden formwork 1 and the pre-embedded steel plate 2; On the other surface of the template 1; the number of the tie bars 3 is more than two; on the other surface of the wooden template 1 relative to the embedded steel plate 2, there is also a square wood fixed between the wooden template 1 and the nut 7 5.

Also includes a steel backing plate 6, the steel backing plate 6 is fixed between the nut 7 and the square wood 5; on the contact surface between the steel backing plate 6 and the square wood 5, the steel backing plate 6 completely covers the square wood 5.

The length of the square timber 5 is greater than or equal to the width of the wooden template 1 .

The diameter of the bolt 4 is 20mm, the length is 20cm, and the model is M16.

The embedded steel plate 2 is a Q235 steel plate with a thickness of 20 mm.

The length of the tie bar 3 is greater than 50cm, the material is rebar, and the diameter is 20mm.

The wooden formwork 1 is made of wood plywood, with a thickness of 1 cm, and is combined with the square wood at 5 to bear the lateral force when pouring the structural concrete 8 .

The purpose of setting the steel backing plate 6 is to make the pressure generated by the nut 7 evenly distributed on the surface of the square wood 5, so as to prevent the concentration of force under the nut 7 from causing the surface of the square wood 5 to be sunken and damaged, thereby affecting the fastening force generated by the bolt 4, resulting in The embedded steel plate 2 cannot be close to the wooden formwork 1.

The purpose of square wood 5 setting is in order to enlarge the action area of the fastening force produced by bolt 4 on the wooden formwork 1, so as to avoid local damage to the structure of the wooden formwork 1 due to excessive force.

The utility model is installed in the following way:

Step 1: Weld the tie bar 3 and the embedded steel plate 2.

Step 2: Bind the structural steel mesh, and temporarily fix the pre-embedded steel plate 2 on the structural steel mesh with thin lead wires according to the approximate positioning.

Step 3: erect the wooden formwork 1, measure and position the wooden formwork 1 according to the design structure size and fix the wooden formwork 1.

Step 4: Measure the position of the lofted pre-embedded steel plate 2, and drill holes in the corresponding position of the wooden formwork 1.

Step 5: Install the pre-embedded steel plate 2, bolt 4, square wood 5, and steel backing plate 6 on both sides of the wooden formwork 1, remove the thin lead wire temporarily fixing the pre-embedded steel plate 2, re-measure and position the pre-embedded steel plate and tighten it Nut 7.

Step 6: Pour structural concrete8.

Step 7: After the structural concrete 8 reaches the design strength, the wooden formwork 1 is removed, and the oil stain on the surface of the embedded steel plate 2 is cleaned.

Step 8: Connect the steel structure (cable tray, railing, door slot, etc.) to the pre-embedded steel plate 2 by welding.

Claims (7)

1. one kind is applicable to the pre-embedded steel slab of wooden model, comprise wooden form (1), pre-embedded steel slab (2), lacing wire (3), bolt (4), the lumps of wood (5), nut (7), it is characterized in that: described wooden form (1) and pre-embedded steel slab (2) surface are close to, wooden form (1) and pre-embedded steel slab (2) are fixed through wooden form (1) and pre-embedded steel slab (2) attaching nut (7) by bolt (4); Described lacing wire (3) welding edges pre-embedded steel slab (2) relative to wooden form (1) another on the surface; The quantity of described lacing wire (3) is more than two; Described wooden form (1) is also fixed with the lumps of wood (5) on the surface, between wooden form (1) and nut (7) relative to another of pre-embedded steel slab (2).

2. be applicable to the pre-embedded steel slab of wooden model as claimed in claim 1, it is characterized in that: also comprise billet (6), billet (6) is fixed between nut (7) and the lumps of wood (5); On the contact surface of billet (6) and the lumps of wood (5), billet (6) covers the lumps of wood (5) completely.

3. be applicable to the pre-embedded steel slab of wooden model as claimed in claim 1, it is characterized in that: the described lumps of wood (5) length is more than or equal to the width of wooden form (1).

4. be applicable to the pre-embedded steel slab of wooden model as claimed in claim 2, it is characterized in that: the diameter of described bolt (4) is 20mm, and length is 20cm, and model is M16.

5. be applicable to the pre-embedded steel slab of wooden model as claimed in claim 2, it is characterized in that: described pre-embedded steel slab (2) is Q235 steel plate, thickness 20mm.

6. be applicable to the pre-embedded steel slab of wooden model as claimed in claim 1, it is characterized in that: the length of described lacing wire (3) is greater than 50cm, material is screw-thread steel, and diameter is 20mm.

7. be applicable to the pre-embedded steel slab of wooden model as claimed in claim 1, it is characterized in that: described wooden form (1) is wood plywood material, and thickness is 1cm.