A steel shaped formwork capable of positioning the main reinforcement of a composite beam

Abstract

A steel shaped formwork capable of positioning the main reinforcement of a composite beam, comprising a steel side formwork on both sides and a steel bottom formwork, and a steel end formwork arranged at both ends, the steel end formwork comprising a fixed upper steel formwork and a replaceable lower steel formwork of the same width, the fixed upper steel formwork comprising a main body patterned steel plate and a folded plate arranged at the two side plate edges and the bottom plate edge of the main body patterned steel plate, the replaceable lower steel formwork comprising a rectangular patterned steel plate and a folded edge arranged at the four side plate edges of the rectangular patterned steel plate, the folded plate of the fixed upper steel formwork and the folded edge of the replaceable lower steel formwork being bolted after being stacked up and down, and the rectangular patterned steel plate being uniformly and spacedly provided with a reinforcement hole. The application uses steel to manufacture the end formwork of the composite beam, which can effectively avoid the main reinforcement deviation during concrete pouring, the upper and lower parts of the steel end formwork are spliced, the bottom replaceable steel formwork can be replaced to adapt to various parameters of the composite beam, and the application of the patterned steel plate can reduce the need for chiseling of the concrete construction joints on site.

Description

Technical Field

[0001] This application relates to the field of building construction, specifically to a standardized steel formwork for positioning the main reinforcement bars of composite beams. Background Technology

[0002] Prefabricated construction is becoming increasingly widespread in green building applications. The construction quality of prefabricated structures is crucial to the overall lifespan and safety of the building. With increasingly innovative building designs and higher load-bearing requirements, the reinforcement ratio of prefabricated components is also increasing, with extremely dense reinforcement in the core areas of beams and columns. Due to the installation process of prefabricated components, to avoid reinforcement collisions during the installation of precast columns and composite beams, the positioning requirements for reinforcement during the fabrication of precast columns and composite beams are extremely strict. Furthermore, because precast components are centrally processed in factories, cost considerations often lead to the use of simple sealing methods such as wooden molds or extruded polystyrene boards for the end formwork of precast components.

[0003] The existing technology has the following problems: (1) Since wooden formwork and extruded polystyrene board are both flexible materials, they cannot play a good role in positioning the reinforcing bars. During the concrete pouring and vibration process, the reinforcing bars are easily displaced due to disturbance and cannot be detected. (2) Wooden formwork is easily damaged during the demolding process after the concrete is poured, and cannot be reused, resulting in a waste of costs; (3) Due to its low strength, the wooden formwork is deformed by lateral pressure during concrete pouring, resulting in grout leakage and affecting the quality and appearance of the precast components. (4) The ends of the composite beams are the construction joints of cast-in-place concrete. The surface of the wooden formwork is relatively smooth, and the composite beams cannot be directly poured with concrete for a second time. The ends of the composite beams need to be roughened on the construction site first, which results in a waste of human resources. Utility Model Content

[0004] The purpose of this utility model is to provide a standardized steel template for positioning the main reinforcement of composite beams, which solves the technical problem that wooden templates, extruded polystyrene board end molds are prone to reinforcement displacement due to disturbance during concrete pouring and vibration; and solves the problem that the number of through holes of existing end molds cannot be adjusted.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A standardized steel formwork for positioning the main reinforcement of composite beams includes two side steel formworks and a bottom steel formwork. Its distinguishing feature is that it further includes steel end formworks at both ends. Each end formwork comprises an upper fixed steel formwork and a lower replaceable steel formwork of equal width. The upper fixed steel formwork includes a main patterned steel plate and folded plates along the side and bottom edges of the main patterned steel plate. The lower replaceable steel formwork includes a rectangular patterned steel plate and folded edges along the four side edges of the rectangular patterned steel plate. The folded plates of the upper fixed steel formwork and the folded edges of the lower replaceable steel formwork are stacked and connected by bolts. The rectangular patterned steel plate has evenly spaced through-reinforcement holes.

[0006] More preferably, the through hole includes a lower semi-circular hole and an upper rectangular hole, with the lower semi-circular hole being adapted to the diameter of the reinforcing bar.

[0007] Furthermore, both the main patterned steel plate and the rectangular patterned steel plate are made of 6mm thick patterned steel plate, while the folded plate and the folded edge are made of 3mm thick Q235B steel plate.

[0008] Furthermore, rubber strips are installed in the joints between the main patterned steel plate and the rectangular patterned steel plate.

[0009] Furthermore, the folded plates and folded edges of the steel end mold are connected to the steel side molds on both sides by bolts, and anti-leakage rubber strips are provided in the splice joint.

[0010] Furthermore, a notch is provided on the upper part of the main patterned steel plate.

[0011] In addition, the width of the reinforcing bar hole is 30mm, the center distance is 82mm, and the height is 150mm.

[0012] In addition, it is 25mm wide, 91mm center distance, and 150mm high.

[0013] More preferably, the upper fixed steel mold is 490mm high, the lower replaceable steel mold is 200mm high, and both are 500mm wide.

[0014] Compared with the prior art, this utility model has the following features and beneficial effects: This application uses steel to make the end formwork of the composite beam, which can effectively avoid the main reinforcement from shifting during concrete pouring. At the same time, the steel has high strength and can be reused multiple times. The steel end formwork is spliced ​​in two parts, and the bottom replaceable steel formwork can be replaced to adapt to various composite beam parameter requirements. The application of patterned steel plates can reduce the need for on-site concrete construction joint chiseling. The rubber strip filling the contact surface of the steel formwork can prevent grout leakage during concrete pouring.

[0015] The steel end mold has through holes for rebars, which can be used to position the main rebars during the fabrication of composite beams, solving the technical problem that existing wooden molds or end molds cannot position rebars. The use of patterned steel plates on the concrete contact surface allows the poured concrete to have its own texture, solving the technical problem of requiring on-site chiseling in existing technologies. The lower replaceable steel formwork can be made in different models to meet the on-site reinforcement installation requirements; Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the end mold structure involved in this application; Figure 2 This is a schematic diagram of the upper fixed steel formwork structure involved in this application; Figure 3 This is a schematic diagram of the lower replaceable steel mold structure involved in this application. Detailed Implementation

[0017] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0018] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0019] Example 1 A standardized steel formwork for positioning the main reinforcement of composite beams includes two side steel formworks and a bottom steel formwork, as well as steel end formworks at both ends. The steel end formwork includes an upper fixed steel formwork 1 and a lower replaceable steel formwork 2 of equal width. The upper fixed steel formwork 1 includes a main patterned steel plate 11 and folded plates 12 on the side and bottom edges of the main patterned steel plate 11. The lower replaceable steel formwork 2 includes a rectangular patterned steel plate 21 and folded edges 22 on the four side edges of the rectangular patterned steel plate 21. The folded plates 12 of the upper fixed steel formwork 1 and the folded edges 22 of the lower replaceable steel formwork 2 are stacked and connected by bolts 3. The rectangular patterned steel plate 21 is provided with evenly spaced through holes 4, and the patterned steel plate is oriented towards the pouring space. Through holes can be provided on the steel end formwork as needed for fixing straight threaded sleeves, which are used to install post-connected reinforcement.

[0020] The combination of a fixed upper steel mold and a replaceable lower steel mold can be used as end formwork during the concrete pouring of composite beams. The replaceable lower steel mold has through holes for rebar insertion, which can be used for positioning the main reinforcement bars during the fabrication of the composite beam. The fixed upper steel mold has fixed dimensions for the upper part of the composite beam, while the replaceable lower steel mold is processed according to different composite beam parameters. By changing the replaceable lower steel mold, the needs of various composite beam models can be met. Patterned steel plates are used for the concrete contact surface, giving the poured concrete a textured finish and eliminating the need for on-site chiseling. Rubber strips, as a flexible material, fill the contact surface between adjacent steel molds, effectively preventing grout leakage during concrete pouring.

[0021] Example 2 Based on Embodiment 1, the through hole 4 includes a lower semi-circular hole and an upper rectangular hole. The lower semi-circular hole is adapted to the diameter of the reinforcing bar. The main patterned steel plate 11 and the rectangular patterned steel plate 21 are both made of 6mm thick patterned steel plate. The folded plate 12 and the folded edge 22 are both made of 3mm thick Q235B steel plate. A rubber strip is provided in the splice joint of the main patterned steel plate 11 and the rectangular steel plate 21. After the folded plate 12 and the folded edge 22 of the steel end mold are attached to the steel side molds on both sides, they are connected by screws. Bolt 3 is connected, and a leak-proof rubber strip is provided in the splice joint. The upper part of the main patterned steel plate 11 is provided with a notch 13 to increase the notch of the composite beam in this place, so as to increase the thickness of the cast-in-place layer on the composite beam. The through hole 4 is 30mm wide, 82mm center distance, and 150mm high, or 25mm wide, 91mm center distance, and 150mm high. The upper fixed steel mold 1 is 490mm high, and the lower replaceable steel mold 2 is 200mm high and 500mm wide.

[0022] The fabrication method is as follows: Measure the cross-sectional parameters of the upper half of the composite beam section, cut 6mm thick patterned steel plates to make a fixed steel mold, and according to the cross-sectional parameters of the lower half, cut 6mm thick patterned steel plates to make a replaceable steel mold, and cut through-reinforcement holes. The elevation of the main reinforcement bars should be within the range of the replaceable steel mold. Cut 100mm wide and 3mm thick Q235B steel plates and weld them to the patterned steel plates on the facades of the fixed and replaceable steel molds respectively, and make bolt holes in the steel plates to install M6 bolts. Attach 1mm thick rubber strips to the sides of the fixed and replaceable steel molds. Use M6 bolts to connect and fix the fixed steel mold and the replaceable steel mold. Similarly, use M6 bolts to connect and fix the assembled steel standardized template to the side steel mold of the composite beam, with the patterned side of the patterned steel plate facing the composite beam direction.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A standardized steel formwork for positioning the main reinforcement bars of composite beams, comprising two side steel formworks and a bottom steel formwork, characterized in that: It also includes steel end molds at both ends. The steel end molds include an upper fixed steel mold (1) and a lower replaceable steel mold (2) of equal width. The upper fixed steel mold (1) includes a main patterned steel plate (11) and folded plates (12) on the side edges and bottom edge of the main patterned steel plate (11). The lower replaceable steel mold (2) includes a rectangular patterned steel plate (21) and folded edges (22) on the four side edges of the rectangular patterned steel plate (21). The folded plates (12) of the upper fixed steel mold (1) and the folded edges (22) of the lower replaceable steel mold (2) are stacked and connected by bolts (3). The rectangular patterned steel plate (21) is provided with rib holes (4) at even intervals.

2. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: The through hole (4) includes a lower semi-circular hole and an upper rectangular hole, with the lower semi-circular hole being adapted to the diameter of the reinforcing bar.

3. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: The main patterned steel plate (11) and the rectangular patterned steel plate (21) are both made of 6mm thick patterned steel plate, and the folded plate (12) and the folded edge (22) are both made of 3mm thick Q235B steel plate.

4. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: Rubber strips are provided in the splice joints of the main patterned steel plate (11) and the rectangular patterned steel plate (21).

5. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: The folded plate (12) and folded edge (22) of the steel end mold are connected to the steel side molds on both sides by bolts (3), and a leak-proof rubber strip is provided in the splice joint.

6. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: The main patterned steel plate (11) has a notch (13) on the upper part.

7. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: The width of the reinforcing bar hole (4) is 30mm, the center distance is 82mm, and the height is 150mm.

8. A standardized steel formwork for positioning the main reinforcement bars of a composite beam as described in claim 1, characterized in that: Width 25mm, center distance 91mm, height 150mm.

9. A standardized steel formwork for positioning the main reinforcement bars of composite beams as described in any one of claims 1 to 8, characterized in that: The upper fixed steel mold (1) is 490 mm high, and the lower replaceable steel mold (2) is 200 mm high and 500 mm wide.

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