Supporting and protecting device free of chiseling at post-cast strip

Abstract

The utility model belongs to the field of constructional engineering, and particularly relates to a post-cast strip dabbing-free supporting and protecting device which comprises a plurality of rectangular long-strip rods symmetrically distributed on the left side and the right side, and protruding points are evenly distributed on the outer side faces of the rectangular long-strip rods. A plurality of rectangular plates are connected between the two rectangular long-strip rods, and a plurality of supporting legs are downwards arranged at the bottoms of the rectangular plates. According to the protection device, the problem of concrete and later pollution at the post-cast strip is solved, secondary scabbling on the two sides of the post-cast strip can be avoided, the splicing quality is guaranteed, construction and walking of workers can be facilitated, a flat surface is provided, and the erecting quality and safety of an inner frame are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering, and in particular relates to a post-pouring strip support and protection device that does not require roughening. Background Technology

[0002] In construction engineering, post-cast strips are a structural measure mainly used to address issues such as differential settlement, preventing concrete shrinkage cracking, and reducing temperature stress. They are typically left in place for at least 28 days. During this period, the following situations often arise: construction work is carried out after the post-cast strip, resulting in a significant accumulation of construction waste at the post-cast strip location, which is difficult to clean even afterward; the concrete on both sides of the post-cast strip needs to be roughened a second time before pouring; and the location of the internal scaffolding of the main structure conflicts with that of the post-cast strip.

[0003] Traditional solutions to the above problems include placing small pieces of bamboo plywood or I-beams under the scaffolding base. However, using bamboo plywood can lead to insufficient load-bearing capacity, causing the internal scaffolding to tilt and affecting the construction quality of structural components. Additionally, debris in the post-pouring strip needs to be cleaned before pouring, and the joints of already poured concrete require secondary roughening. Using I-beams, the reinforcement bars at the post-pouring strip location are not cut, making it difficult to place the I-beams. Furthermore, improper dimensions can cause the I-beams to protrude from the ground, affecting worker movement and scaffolding erection, potentially leading to scaffold instability and safety accidents. Summary of the Invention

[0004] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a post-pouring strip support and protection device that does not require roughening.

[0005] This invention is achieved through the following technical solution:

[0006] A post-pouring strip support and protection device without roughening includes several rectangular long bars symmetrically distributed on the left and right sides, the distance between the rectangular long bars on both sides being equal to the width of the post-pouring strip, the outer surfaces of the rectangular long bars being evenly distributed with protrusions, and the thickness of the rectangular long bars being equal to the designed thickness of the reinforcing steel protective layer; several rectangular plates are connected between the two rectangular long bars, and several supporting legs are provided at the bottom of the rectangular plates; the upper surfaces of the rectangular long bars and the rectangular plates are on the same horizontal plane.

[0007] Preferably, the rectangular long bar is provided with a plurality of threaded holes A, and the rectangular plate is provided with threaded holes B corresponding to the threaded holes A. The long screw passes through the threaded holes A and the threaded holes B to connect the rectangular long bar and the rectangular plate together, and nuts are provided at both ends of the long screw.

[0008] Preferably, the rectangular plate has protrusions, and the rectangular long rod has grooves, with the rectangular long rod overlapping the rectangular plate through the grooves and protrusions.

[0009] Preferably, the rectangular plate includes a fixed plate and a sliding plate that are fitted together, and the sliding plate can slide within the fixed plate.

[0010] Preferably, the support leg includes a fixed rod and a sliding rod sleeved together, and both the fixed rod and the sliding rod are provided with adjustment holes. The fixed rod and the sliding rod are fixed together by bolts passing through the adjustment holes.

[0011] Preferably, the rectangular long bar is made of rectangular steel pipe.

[0012] Beneficial effects of this invention:

[0013] 1. The protective device solves the problem of post-pouring strip contamination;

[0014] 2. The protective device eliminates the need for secondary roughening on both sides of the post-pouring strip, ensuring the quality of the joint;

[0015] 3. The post-pouring strip is at the same height as the concrete on both sides, which facilitates construction and worker movement;

[0016] 4. During the construction of the upper structure scaffolding, the protective device provided a flat surface, ensuring the quality and safety of the inner scaffolding erection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the long screw connection method in this embodiment;

[0018] Figure 2 This is a schematic diagram of the overall structure of the overlapping method in this embodiment;

[0019] Figure 3 This is a schematic diagram of the rectangular long bar structure of the long screw connection method in this embodiment;

[0020] Figure 4 This is a schematic diagram of the rectangular long bar angle and rectangular plate structure of the long screw connection method in this embodiment;

[0021] Figure 5 This is a schematic diagram of the rectangular plate structure using the long screw connection method in this embodiment;

[0022] Figure 6 This is a schematic diagram of the rectangular long bar corner and rectangular plate structure of the overlapping method in this embodiment.

[0023] In the diagram, 1 is a rectangular bar, 2 is a protrusion, 3 is a rectangular plate, 4 is a support leg, 5 is a threaded hole A, 6 is a threaded hole B, 7 is a long screw, 8 is a nut, 9 is a protrusion, 10 is a groove, 11 is a fixed plate, 12 is a sliding plate, 13 is a fixed rod, 14 is a sliding rod, 15 is an adjusting hole, and 16 is a bolt. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0025] This embodiment includes several rectangular long bars 1 symmetrically distributed on the left and right sides of the post-cast strip. The rectangular long bars 1 on each side are arranged one after another along the length of the post-cast strip, and the rectangular long bars 1 can be made of rectangular steel pipes. The distance between the rectangular long bars 1 on both sides is equal to the width of the post-cast strip. The rectangular long bars 1 are located on the surface of the grout-blocking mesh on both sides of the post-cast strip. The rectangular long bars 1 can be used as formwork to prevent the concrete poured first from the structures on both sides of the post-cast strip. In addition, the rectangular long bars 1 can also be used to control the thickness of the reinforcement protective layer, ensuring that the thickness of the rectangular long bars 1 is equal to the designed reinforcement protective layer thickness. This way, when pouring concrete for the structures on both sides of the post-cast strip, the height can be poured until it is flush with the upper surface of the rectangular long bars 1. To eliminate the need for roughening the surface when pouring concrete for the post-pouring strip, raised dots 2 are evenly distributed on the outer surface of the rectangular bar 1. After the concrete on both sides of the post-pouring strip is poured, removing the rectangular bar 1 will leave a dense array of pits on the concrete poured on both sides of the post-pouring strip. Therefore, it is not necessary to roughen the surface of the original concrete on both sides when pouring concrete for the post-pouring strip later.

[0026] Several rectangular plates 3 are connected between the rectangular long bars 1 on both sides, and the rectangular plates 3 are close to each other. In this embodiment, three rectangular plates 3 are connected between each pair of rectangular long bars 1 on both sides. The upper surfaces of the rectangular long bars 1 and the rectangular plates 3 are on the same horizontal plane. Several supporting legs 4 are provided at the bottom of the rectangular plates 3, and the supporting legs 4 can be placed between the gaps of the reinforcing bars tied in the post-cast strip. The connection structure between the rectangular long rod 1 and the rectangular plate 3 can be varied. In this embodiment, two connection methods are preferred: The first connection method is that the rectangular long rod 1 has several threaded holes A5, and the rectangular plate 3 has threaded holes B6 corresponding to the threaded holes A5. A horizontal long screw 7 passes through the threaded holes A5 and B6 to connect the rectangular long rod 1 and the rectangular plate 3 together, and is fastened by nuts 8 at both ends of the long screw 7; The second connection method is an overlapping structure, where the rectangular plate 3 has protrusions 9, and the rectangular long rod 1 has grooves 10. The rectangular long rod 1 overlaps with the rectangular plate 3 through the grooves 10 and protrusions 9.

[0027] To accommodate post-cast strips of varying widths and heights, this embodiment preferably incorporates telescopic rectangular plate 3 and support leg 4. Specifically, rectangular plate 3 comprises a fixed plate 11 and a sliding plate 12 fitted together. The sliding plate 12 can slide within the fixed plate 11, allowing adjustment of the width of rectangular plate 3. Support leg 4 comprises a fixed rod 13 and a sliding rod 14 fitted together. Both the fixed rod 13 and the sliding rod 14 are provided with adjustment holes 15. The fixed rod 13 and the sliding rod 14 are fixed together by bolts 16 passing through the adjustment holes 15. The length of support leg 4 is adjusted by the sliding rod 14, thereby adjusting the height of rectangular plate 3.

[0028] During construction, rectangular slabs 3 are placed in the post-pouring strip area, with the rectangular slabs 3 placed close together. The supporting legs 4 below are placed between the steel bars tied in the post-pouring strip. The height of the supporting legs 4 is adjusted so that the height of the upper surface of the rectangular slab 3 is equal to the height of the pre-poured concrete of the structures on both sides of the post-pouring strip. Then, rectangular long rods 1 are used to connect several rectangular slabs 3 together on both sides. The rectangular long rods 1 are located on the upper surface of the grout-blocking net. The grout-blocking net is a structure set on both sides of the post-pouring strip before the concrete is poured to prevent concrete from flowing into the post-pouring strip. If the rectangular long rod 1 and the rectangular plate 3 are connected by a long screw 7, align the threaded holes A5 and B6, allowing the long screw 7 to pass horizontally through the rectangular long rods 1 on both sides and the rectangular plate 3 in the middle, connecting the three together. Then tighten the nuts 8 at both ends. To facilitate removal from the concrete later, a release agent can be applied to the two exposed ends of the long screw 7 and the nuts 8 before concrete pouring. If the rectangular long rod 1 and the rectangular plate 3 are connected by an overlap, simply overlap the rectangular long rod 1 onto the rectangular plate 3. After the device of this invention is installed at the post-pouring strip, concrete can be poured for the structures on both sides of the post-pouring strip. The pouring height is flush with the upper surface of the rectangular long rod 1, thereby effectively controlling the thickness of the reinforcement protective layer, i.e., the thickness of the rectangular long rod 1 with the grout-blocking mesh facing upwards is the designed thickness of the reinforcement protective layer. The device of this invention forms a protective barrier at the post-pouring strip, effectively preventing debris from falling or accumulating within it. It also creates a temporary passageway and construction platform, allowing workers to walk on it and providing a flat surface for the erection of the upper structure scaffold, ensuring the quality and safety of the scaffolding. When it is time to pour the post-pouring strip, the device can be directly removed. After removal, the joints of the already poured concrete on both sides of the post-pouring strip do not require secondary roughening, saving steps and improving construction efficiency.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A post-cast strip support and protection device that does not require roughening, characterized in that: It includes several rectangular long bars (1) symmetrically distributed on the left and right sides, the distance between the two rectangular long bars (1) is equal to the width of the post-cast strip, the outer surface of the rectangular long bars (1) is uniformly provided with protrusions (2), the thickness of the rectangular long bars (1) is equal to the designed thickness of the steel reinforcement protective layer; several rectangular plates (3) are connected between the two rectangular long bars (1), and several supporting legs (4) are provided at the bottom of the rectangular plates (3); the upper surfaces of the rectangular long bars (1) and the rectangular plates (3) are on the same horizontal plane.

2. The post-pouring strip support and protection device without roughening as described in claim 1, characterized in that: The rectangular long bar (1) is provided with several threaded holes A (5), and the rectangular plate (3) is provided with threaded holes B (6) corresponding to the threaded holes A (5). The long screw (7) passes through the threaded holes A (5) and the threaded holes B (6) to connect the rectangular long bar (1) and the rectangular plate (3) together. Nuts (8) are provided at both ends of the long screw (7).

3. The post-pouring strip support and protection device without roughening as described in claim 1, characterized in that: The rectangular plate (3) is provided with protrusions (9), and the rectangular long bar (1) is provided with grooves (10). The rectangular long bar (1) is connected to the rectangular plate (3) through the grooves (10) and protrusions (9).

4. The post-pouring strip support and protection device without roughening as described in claim 1, characterized in that: The rectangular plate (3) includes a fixed plate (11) and a sliding plate (12) that are fitted together, and the sliding plate (12) can slide within the fixed plate (11).

5. The post-pouring strip support and protection device without roughening as described in claim 1, characterized in that: The support leg (4) includes a fixed rod (13) and a sliding rod (14) sleeved together. Both the fixed rod (13) and the sliding rod (14) are provided with adjustment holes (15). The fixed rod (13) and the sliding rod (14) are fixed together by bolts (16) passing through the adjustment holes (15).

6. The post-pouring strip support and protection device without roughening as described in claim 1, characterized in that: The rectangular long bar (1) is made of rectangular steel pipe.

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