CN220226165U - Cantilever formwork system - Google Patents

Abstract

The utility model discloses a cantilever formwork support system, which includes a cantilever component and a steel pipe formwork component. The cantilever component includes a horizontal steel beam, a diagonal support beam and a pre-embedded structural component. The horizontal steel beam is fixed Installed on the structural surface of the upper floor slab, the embedded structural parts are pre-embedded on the structural surface of the lower floor slab. One end of the horizontal steel beam extends outward from the structural surface of the upper floor slab. The upper end of the diagonal brace beam is fixedly connected to the horizontal steel beam. A plurality of parallel steel coupling beams are fixedly installed on the upper surface of the outward extension of the profiled steel beam. By arranging diagonal brace beams, the load-bearing capacity of the horizontal profiled steel beam is increased, making the installation of the cantilevered components stronger and more stable. Steel coupling beams and positioning steel bars are arranged on the upper side. When building the steel pipe formwork assembly, there are multiple rows of longitudinal and parallel steel coupling beams. The spacing can be adjusted according to actual needs, so that the vertical poles of the full hall formwork can be positioned between the steel coupling beams. The upper feet are fixed to ensure the overall stability of the steel pipe formwork assembly and facilitate construction.

Description

A cantilever formwork system

Technical field

The utility model relates to the technical field of cantilever formwork, specifically a cantilever formwork system.

Background technique

With the continuous development of the construction industry, there are more and more reinforced concrete cantilever structures. When the elevation of the cantilever structure is relatively low, the formwork can use a floor-standing full-hall support frame system; when the elevation is higher, the floor-standing full-hall support frame can be used. The system will no longer apply. At this time, a cantilevered I-beam support frame system can be used. The traditional cantilevered I-beam structure has small stress and is generally suitable for cantilever scaffolding, but cannot be applied to the formwork system of reinforced concrete cantilevered structures.

In the existing technology, the patent application number is 201520743757. Formwork and formwork, the concrete structural components and the bottom ends of the cantilevered steel beams are pressed together in the vertical direction, the cantilevered steel beams are provided with formwork frames, and formwork is laid between the formwork frames; there are also It is provided with a U-shaped bolt whose lower end is embedded in the concrete component, and also includes a pressure plate. The pressure plate is provided with a threaded hole. The vertical top of the U-shaped bolt passes through the threaded hole of a pressure plate and is then locked and connected with a nut. The pressure plate and the top of the cantilevered steel beam are pressed together in the vertical direction. This utility model makes full use of the original structural conditions and the load-bearing capacity of the steel beam itself, and installs the cantilevered outer frame on the layer below the high-altitude cantilevered component. For cantilevered steel beams, steel pipe supports are erected on the cantilevered steel beams and formwork is installed to construct high-altitude cantilevered reinforced concrete structures.

The support frame of the reinforced concrete cantilever structure has some defects in the actual use process. Since the cantilevered steel beams are dispersedly arranged, their spacing is limited by the installation position of the main structure. When the upper part is supported by a full-length steel pipe, the bottom end of the steel pipe is supported. It is inconvenient to stand on the cantilevered steel beams, which brings inconvenience to the construction of the steel pipe formwork. If the overall structure of the cantilevered formwork is not stable enough, there will be great safety risks.

Utility model content

The purpose of this utility model is to provide a cantilever formwork system to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solution: a cantilever formwork system, which includes a cantilever component and a steel pipe formwork component. The cantilever component includes a horizontal steel beam, a diagonal brace beam and a pre-embedded formwork assembly. Structural components, horizontal steel beams are fixedly installed on the structural surface of the upper floor, and embedded structural components are embedded on the structural surface of the lower floor. One end of the horizontal steel beam extends outward from the structural surface of the upper floor, and the upper end of the diagonal brace beam is connected to the structural surface of the upper floor. The extension part of the horizontal steel beam is fixedly connected, and the bottom end of the diagonal brace beam is fixedly connected with the pre-embedded structural parts;

A plurality of parallel steel coupling beams are fixedly installed on the upper surface of the outward extension of the horizontal steel beam, and a number of positioning steel bars are fixedly installed on the upper surface of the steel coupling beams. The steel pipe formwork assembly includes a vertical pole, and the vertical steel coupling beam is fixedly installed on the upper surface. The bottom end of the rod can be sleeved on the surface of the positioning steel bar.

Preferably, the pre-embedded structural parts include embedded plates, tie rods and anchor steel plates. The embedded plates, tie rods and anchor steel plates are fixedly connected to each other. The embedded plates and tie rods are both buried inside the structural surface of the lower floor, and the anchor steel plates are exposed. Or flush with the structural surface of the lower floor.

Preferably, the horizontal steel beam is fixedly installed on the upper floor structural surface through expansion bolts. The lower surface of the outward extension of the horizontal steel beam is welded with a connecting plate. The two ends of the diagonal brace beam are respectively connected with the connecting plate and the anchoring steel plate. Single-sided fillet welding is used for welding and fixation.

Preferably, the horizontal steel beams, diagonal brace beams and steel coupling beams all adopt I-shaped steel beams.

Preferably, the steel pipe formwork assembly also includes a horizontal rod, a pair of tie rods, a scissor brace and a jack. The jack is installed on the top of the vertical pole. A steel pipe is installed on the upper part of the jack, and wooden beams are installed on the surface of the steel pipe. The roof structure formwork is fixedly installed on the upper surface of the wooden rafters, the bottom end of the vertical pole of the cantilevered structure part is installed at the positioning steel bar, and the bottom end of the vertical pole of the non-cantilevered structural part is placed on the structural surface of the lower floor slab.

Preferably, the spacing between adjacent steel coupling beams and adjacent positioning steel bars is determined according to the requirements for the spacing between vertical poles when building steel pipe formwork assemblies throughout the hall.

beneficial effects

The utility model provides a cantilever formwork system, which has the following beneficial effects:

1. This cantilever formwork system increases the load-bearing capacity of horizontal steel beams by setting diagonal support beams, making the installation of cantilever components more solid and stable. Steel coupling beams and positioning steel bars are arranged on the upper side. During the construction When forming the steel pipe formwork assembly, the spacing between multiple rows of longitudinally and parallel steel coupling beams can be adjusted according to actual needs, so that the vertical poles of the full hall formwork can be fixed on the steel coupling beams to ensure the integrity of the steel pipe formwork assembly. The stability provides convenience for construction.

2. In this cantilever formwork system, pre-embedded structural parts are installed when the floor structural steel bars are bundled. After the structural layer is poured, the anchoring steel plate and the structural layer are fixed as one body to facilitate the bottom end of the diagonal brace beam. Installation and welding eliminate the need to drill holes and damage the structural layer later, providing sufficient support for its installation, making it more convenient, safe and reliable to use.

Description of drawings

Figure 1 is a schematic diagram of the front section structure of the utility model;

Figure 2 is a schematic cross-sectional view of the cantilever component of the present invention;

Figure 3 is a schematic structural diagram of the front section of the embedded structural part of the present invention;

Figure 4 is a partially enlarged schematic diagram of the horizontal steel beam of the present invention.

In the picture: 1 steel pipe formwork assembly, 2 horizontal steel beams, 3 diagonal brace beams, 4 embedded structural parts, 5 upper floor structural surface, 6 lower floor structural surface, 7 steel coupling beams, 8 positioning steel bars, 9 vertical Rods, 10 embedded plates, 11 tie rods, 12 anchoring steel plates, 13 connecting plates, 14 horizontal rods, 15 roof structure formwork.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Please refer to Figures 1-4. The present utility model provides a technical solution: a cantilever formwork system, including a cantilever component and a steel pipe formwork component 1. The cantilever component includes a horizontal steel beam 2, a diagonal support beam 3 and pre-embedded structural parts 4, the horizontal steel beam 2 is fixedly installed on the upper floor structural surface 5, and the pre-embedded structural parts 4 are pre-embedded on the lower floor structural surface 6. The pre-embedded structural parts include embedded plates 10, tie rods 11 and The anchor steel plate 12, the embedded plate 10, the tie rods 11 and the anchor steel plate 12 are fixedly connected to each other. The embedded plate 10 and the tie rods 11 are both buried inside the structural surface 6 of the lower floor slab. The anchor steel plate 12 is exposed or flush with the surface of the structural surface 6 of the lower floor floor. Flat, see Figure 3.

As shown in Figure 2, one end of the horizontal steel beam 2 extends outward from the upper floor structural surface 5. The upper end of the diagonal brace beam 3 is fixedly connected to the extension of the horizontal steel beam 2. The bottom end of the diagonal brace beam 3 is pre-prepared. The embedded structural members 4 are fixedly connected; specifically, the horizontal steel beam 2 is fixedly installed on the upper floor structural surface 5 through expansion bolts. The connecting plate 13 is welded to the lower surface of the outward extension of the horizontal steel beam 2, and the diagonal brace beam 3 The two ends of the connecting plate 13 and the anchoring steel plate 12 are welded and fixed with single-sided fillet welds. By setting the embedded structural parts 4, when the floor structural steel bars are bundled, the embedded structural parts 4 are installed. After the structural layer is poured, the anchoring steel plate 12 is fixed as one with the structural layer, which facilitates the installation and welding of the bottom end of the diagonal support beam 3. It does not require drilling holes and damaging the structural layer later, and provides sufficient support for its installation, making it more convenient, safe and reliable to use.

A plurality of parallel steel coupling beams 7 are fixedly installed on the upper surface of the outward extension of the horizontal steel beam 2. The horizontal steel beam 2, the diagonal brace beam 3 and the steel coupling beam 7 all adopt I-shaped steel beams, and the steel coupling beams are A number of positioning steel bars 8 are fixedly installed on the upper surface of the beam 7, see Figure 4.

The steel pipe formwork assembly 1 includes a vertical pole 9, a horizontal pole 14, a pair of tie rods, a scissor brace and a jack. The bottom end of the pole 9 can be set on the surface of the positioning steel bar 8, and the jack is installed on the top of the pole. A steel pipe is installed on the upper part of the jack, wooden beams are installed on the surface of the steel pipe, and the roof structure formwork 15 is fixedly installed on the upper surface of the wooden beams. The existing technology will not be described in detail here. The bottom end of the vertical pole 9 of the cantilevered structure part is installed. At the positioning steel bar 8, the bottom end of the vertical pole 9 of the non-overhanging structural part is placed on the structural surface 6 of the lower floor floor.

In this embodiment, the distance between adjacent steel coupling beams 7 and adjacent positioning steel bars 8 is determined according to the requirements for the distance between vertical poles 9 when building steel pipe formwork assemblies throughout the hall.

Specifically, as shown in Figure 1, the reinforced concrete roof structure is a sloped roof structure, with the eave cavity and drainage ditch structure extending 2000mm. The steel pipe formwork assembly 1 has all vertical poles 9, horizontal poles 14, tie rods, and scissor braces. The vertical poles 9 and the horizontal poles of the protective poles 9 are all steel pipes with a diameter of 48mm. The formwork poles 9 of the cantilever structure are placed on the steel coupling beams 7, and the lower parts of the poles 9 are positioned using positioning steel bars 8.

There are five steel coupling beams 7 in total. The center line of each steel coupling beam 7 is 200mm, 800mm, 1100mm, 1400mm, and 2200mm from the beam edge from the inside to the outside. The steel coupling beam 7 and the horizontal steel beam 2 adopt single-sided fillet welding. seam, the weld height is 6mm, and the cantilever structure is supported by 6 rows of vertical poles 9. The spacing of each row of vertical poles 9 is consistent with the positioning steel bars 8. The roof structure formwork 15 is supported throughout the room through the steel pipe formwork assembly 1. What needs to be explained Yes, the specific settings are determined based on the actual conditions of the specific project. Since the Mantang support uses existing mature technology, no details will be given here.

This cantilever support formwork system increases the load-bearing capacity of the horizontal steel beam 2 by arranging diagonal support beams 3, making the installation of the cantilever components more solid and stable, and arranges steel coupling beams 7 and positioning steel bars 8 on its upper side. When building the steel pipe formwork assembly 1, the spacing of multiple rows of longitudinally and parallel steel coupling beams 7 can be adjusted according to actual needs, so that the vertical poles 9 of the full hall formwork can be fixed on the steel coupling beams 7 to ensure The overall stability of the steel pipe formwork assembly 1 provides convenience for construction.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. , substitutions and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A cantilever formwork system, including a cantilever component and a steel pipe formwork component (1), characterized in that: the cantilever component includes a horizontal steel beam (2), a diagonal brace beam (3) and Pre-embedded structural parts (4), horizontal steel beams (2) are fixedly installed on the upper floor structural surface (5), pre-embedded structural parts (4) are pre-embedded on the lower floor structural surface (6), horizontal steel beams One end of (2) extends outwards from the upper floor structural surface (5). The upper end of the diagonal brace beam (3) is fixedly connected to the extension of the horizontal steel beam (2). The bottom end of the diagonal brace beam (3) is pre-prepared. Buried structural components (4) are fixedly connected; A plurality of parallel steel coupling beams (7) are fixedly installed on the upper surface of the outward extension of the horizontal steel beam (2), and a number of positioning steel bars (8) are fixedly installed on the upper surface of the steel coupling beam (7). The steel pipe formwork assembly (1) includes a vertical pole (9), and the bottom end of the vertical pole (9) can be sleeved on the surface of the positioning steel bar (8). 2. A cantilever formwork system according to claim 1, characterized in that: the pre-embedded structural component (4) includes an embedded plate (10), a tie rod (11) and an anchoring steel plate (12). The plate (10), the tie rod (11) and the anchor steel plate (12) are fixedly connected to each other. The embedded plate (10) and the tie rod (11) are both buried inside the lower floor structural surface (6). The anchor steel plate (12) Exposed or flush with the surface of the lower floor slab structural surface (6). 3. A cantilever formwork system according to claim 2, characterized in that: the horizontal steel beam (2) is fixedly installed on the upper floor slab structural surface (5) through expansion bolts, and the horizontal steel beam (2) A connecting plate (13) is welded to the lower surface of the outward extension, and the two ends of the diagonal brace beam (3) are welded and fixed with the connecting plate (13) and the anchoring steel plate (12) using single-sided fillet welds. 4. A cantilever formwork system according to claim 3, characterized in that: the horizontal steel beams (2), diagonal brace beams (3) and steel coupling beams (7) all adopt an I-shape. Steel beams. 5. A cantilever formwork system according to any one of claims 1 to 4, characterized in that: the steel pipe formwork assembly (1) also includes a horizontal rod (14), a pair of tie rods, and a scissor brace. And the jacking bracket, the jacking bracket is installed on the top of the vertical pole, the upper part of the jacking bracket is installed with a steel pipe, wooden squares are installed on the surface of the steel pipe, the roof structure formwork (15) is fixedly installed on the upper surface of the wooden squares, and the cantilevered structure part The bottom end of the vertical pole (9) is installed at the positioning steel bar (8), and the bottom end of the vertical pole (9) of the non-overhanging structural part is placed on the lower floor floor structural surface (6). 6. A cantilever formwork system according to claim 5, characterized in that: according to the requirements for the spacing between vertical poles (9) when building steel pipe formwork assemblies in the entire hall, the adjacent steel coupling beams (7) and The spacing between adjacent positioning steel bars (8).