Water stop steel plate composite support-free structure for roof post-cast strip

Abstract

The utility model relates to the field of building construction. The utility model aims to provide a water stop steel plate composite support-free structure for a roof post-cast strip, which comprises a left concrete plate and a right concrete plate which are oppositely arranged at intervals, a notch is formed between two opposite side walls of each concrete plate, and a casting template for blocking the notch is arranged below the notch. A concrete to-be-poured area is formed between the notch and the pouring formwork. A water stop steel plate and fixing blocks which extend front and back are embedded in the concrete slab, the water stop steel plate and the fixing blocks are horizontally arranged and transversely extend into a concrete to-be-poured area, the fixing blocks are located below the water stop steel plate, and a supporting frame used for bearing a pouring formwork is connected between the fixing blocks on the left side and the right side. A conventional construction mode that a scaffold is used for supporting the lower portion of the pouring formwork is avoided, supporting-free construction of the pouring formwork is achieved, and the effect that construction is convenient and fast is achieved.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to a composite support-free structure of a water-stop steel plate for a roof post-cast strip. Background Art

[0002] In building construction, leaving post-cast joints is a common construction technique, which is used to solve construction quality problems caused by factors such as construction sequence and temperature differences.

[0003] First of all, the traditional roof post-casting formwork is usually supported by internal scaffolding. The internal scaffolding is set up in the floor below the roof layer to support the roof formwork. This method is not only cumbersome and labor-intensive, but also easy to cause deformation of the formwork during construction, affecting the casting quality.

[0004] Secondly, as the part of the building with high waterproofing requirements, how to effectively prevent rainwater from penetrating into the structure due to the process defects caused by the roof post-cast strip is also an urgent problem to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a composite support-free structure of a water-stop steel plate for a roof post-casting strip, which avoids the conventional construction method of using a scaffolding support at the bottom of a casting template, realizes the support-free construction of the casting template, and achieves the effect of convenient and quick construction;

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A composite support-free structure of a water-stop steel plate for a roof post-cast strip, comprising two left and right concrete slabs spaced opposite to each other, a gap formed between two opposite side walls of the concrete slabs, a casting template for blocking the gap is provided below the gap, and a concrete pouring area is formed between the gap and the casting template;

[0008] A waterstop steel plate and a fixed block extending forward and backward are embedded in the concrete slab. The waterstop steel plate and the fixed block are horizontally arranged and extend laterally to the area to be poured concrete. The fixed block is located below the waterstop steel plate, and a support frame for supporting the casting formwork is connected between the fixed blocks on the left and right sides.

[0009] Compared with the prior art, the advantages of the utility model are:

[0010] 1. The strip skeleton inside the support frame and the through-wall screw rods make the casting template reliably block the gap, avoiding the conventional construction method of using scaffolding to support the lower part of the casting template, realizing the support-free construction of the casting template, and achieving the effect of convenient and fast construction;

[0011] 2. The waterproof steel plate buried in the concrete slab effectively improves the waterproof performance of the structure, thereby preventing rainwater from the roof from penetrating into the structure;

[0012] 3. By setting formwork clamps above the left and right ends of the casting formwork, the casting formwork is clamped with the concrete slab, further enhancing the formwork stability of the casting formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a composite support-free structure of a water-stop steel plate for a roof post-cast strip according to the utility model;

[0014] Figure 2 It is a simplified structural diagram of the support frame of the utility model;

[0015] Figure 3 It is a top view of a composite support-free structure of a water-stop steel plate for a roof post-cast strip of a utility model;

[0016] Figure 4 It is a bottom view of a utility model of a composite support-free structure of a water-stop steel plate for a roof post-cast strip;

[0017] Figure 5 The utility model discloses a front view of a composite support-free structure of a water-stop steel plate for a roof post-cast strip.

[0018] Explanation of reference numerals: 1 concrete slab, 2 notch, 3 casting formwork, 4 water-stop steel plate, 5 fixing block, 6 support frame, 61 strip frame, 62 through-wall screw, 621 rod, 622 nut locking piece, 7 water-stop gasket, 8 formwork clamp. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0020] like Figure 1-5 The figure is a schematic diagram of an embodiment of a composite support-free structure of a water-stop steel plate for a roof post-cast strip provided by the utility model.

[0021] It comprises two opposite concrete slabs 1 arranged at intervals on the left and right sides, a gap 2 is formed between the two opposite side walls of the concrete slab 1, a casting template 3 for blocking the gap 2 is provided below the gap 2, and a concrete pouring area is formed between the gap 2 and the casting template 3;

[0022] A waterstop steel plate 4 and a fixed block 5 extending forward and backward are embedded in the concrete slab 1. The waterstop steel plate 4 and the fixed block 5 are horizontally arranged and extend laterally to the area to be poured with concrete. The fixed block 5 is located below the waterstop steel plate 4, and a support frame 6 for supporting the pouring formwork 3 is connected between the fixed blocks 5 on the left and right sides.

[0023] The casting template 3 is a U-shaped structure with an opening upward, and its side walls block the front and rear sides of the gap 2.

[0024] The lengths of the water stop steel plate 4 and the fixing block 5 are not greater than the horizontal length between the front and rear inner walls of the casting template 3 .

[0025] The horizontal height of the top end of the side wall of the casting formwork 3 is not lower than the horizontal height of the top surface of the concrete slab 1 .

[0026] The support frame 6 includes a plurality of strip frames 61 fixed between the fixing blocks 5 , and a plurality of through-wall screws 62 for supporting the casting formwork 3 are arranged at intervals at the bottom of the strip frames 61 along the extending direction thereof.

[0027] The through-wall screw 62 is longitudinally arranged, and includes a rod portion 621 whose upper end is fixed to the strip frame 61 and a nut locking piece 622 with an internal thread. The lower end of the rod portion 621 is provided with an external thread, which passes through the casting template 3 and is screwed and locked with the nut locking piece 622.

[0028] A water-stop gasket 7 is provided between the fitting surface of the nut locking piece 622 and the casting template 3 .

[0029] Formwork clamps 8 for clamping the concrete slab 1 and the casting formwork 3 are provided above the left and right ends of the casting formwork 3 .

[0030] The water-stop steel plate 4 in the area to be poured with concrete is provided with a bending section extending upward.

[0031] The water-stop steel plate 4 is a commonly used building component for basement waterproofing, so its structure will not be described in detail.

[0032] The concrete slab 1 is a prefabricated component or a hardened cast-in-place structure.

[0033] The casting template 3 is provided with through holes for accommodating the rod parts 621 of a plurality of through-wall screws 62 to pass through.

[0034] The fixing block 5 and the strip frame 61 are welded.

[0035] The wall-penetrating screw rod 62 and the strip frame 61 are welded.

[0036] The joints between the casting formwork 3 and the concrete slab 1 are sealed with adhesive strips to prevent grout leakage.

[0037] The general construction method of the utility model is:

[0038] First, the prefabricated concrete slab 1 is hoisted to the roof layer and fixed securely. Then, several prepared support frames 6 are welded between the fixing blocks 5, and the through holes of the casting template 3 are aligned with the lower ends of the rods 621 of the through-wall screws 62, and then the template is installed;

[0039] The rod 621 of the through-wall screw 62 is threaded through the casting form 3, and a water-stop gasket 7 is placed between the nut locking piece 622 and the casting form 3. Then, a torque wrench is used to tighten the nut locking piece 622 to the design requirement, so that the casting form 3 is firmly locked on the support frame 6. Finally, the formwork clamp 8 is used to clamp the concrete slab 1 and the casting form 3 to complete the formwork work.

[0040] Pour concrete in the concrete pouring area. When the cast-in-place concrete reaches the demoulding strength, remove the formwork clamp 8 and the pouring formwork 3, and cut the lower end of the rod 621 of the wall-penetrating screw 32 exposed outside the concrete flat, thus completing the construction of the roof post-casting strip.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite support-free structure of a water-stop steel plate for a roof post-cast strip, characterized in that: It comprises two left and right concrete slabs (1) arranged opposite to each other with a spacing therebetween, a gap (2) is formed between two opposite side walls of the concrete slab (1), a casting template (3) for sealing the gap (2) is provided below the gap (2), and a concrete pouring area is formed between the gap (2) and the casting template (3); A waterstop steel plate (4) and a fixing block (5) extending forward and backward are embedded in the concrete slab (1); the waterstop steel plate (4) and the fixing block (5) are arranged horizontally and extend transversely to the area to be poured concrete; the fixing block (5) is located below the waterstop steel plate (4), and a support frame (6) for supporting the pouring formwork (3) is connected between the fixing blocks (5) on the left and right sides.

2. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 1 is characterized in that: The casting template (3) is a U-shaped structure with an opening facing upward, and its side walls seal the front and rear sides of the gap (2).

3. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 2 is characterized in that: The lengths of the water-stop steel plate (4) and the fixing block (5) are not greater than the horizontal length between the front and rear inner walls of the casting template (3).

4. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 2 is characterized in that: The horizontal height of the top end of the side wall of the casting template (3) is not lower than the horizontal height of the top surface of the concrete slab (1).

5. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 1 is characterized in that: The support frame (6) comprises a plurality of strip-shaped frames (61) fixed between the fixing blocks (5), and a plurality of through-wall screws (62) for supporting the casting formwork (3) are arranged at intervals at the bottom of the strip-shaped frames (61) along the extension direction thereof.

6. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 5 is characterized in that: The through-wall screw (62) is arranged longitudinally, and comprises a rod portion (621) whose upper end is fixedly connected to the strip frame (61) and a nut locking piece (622) provided with an internal thread. The lower end of the rod portion (621) is provided with an external thread, which passes through the casting template (3) and is screwed and locked with the nut locking piece (622).

7. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 6 is characterized in that: A water-stop gasket (7) is provided between the fitting surface of the nut locking piece (622) and the casting template (3).

8. The composite support-free structure of water-stop steel plate for post-cast roof strip according to claim 1 is characterized in that: Formwork clamps (8) for clamping the concrete slab (1) and the casting formwork (3) are provided above both left and right ends of the casting formwork (3).

9. The composite support-free structure of water-stop steel plate for post-cast roof strip according to any one of claims 1 to 8, characterized in that: The water-stop steel plate (4) in the area to be poured concrete is provided with a bending section extending upward.

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