Steel structure cantilever plate structure

Abstract

The invention discloses a steel structure cantilever plate structure which comprises cantilever channel steel, a floor support plate, a boundary beam and a main body structure, the cantilever channel steel is arranged on the floor support plate, the cantilever channel steel and the floor support plate are both connected with the boundary beam, and the boundary beam is arranged on the main body structure. The invention has the beneficial effects that the cantilever channel steel is responsible for bearing the load of the floor support plate and transmitting the load to the boundary beam, and finally the load is transmitted to the main body structure through the boundary beam, thereby laying a solid foundation for the structural stability of the cantilever plate and ensuring the safe bearing in various use scenes; multiple pieces of overhanging channel steel are vertically welded to the upper flanges of the edge beams in a double-face mode, the upper bearing limit of the structure is improved in an all-around mode, the situations of deformation and damage caused by too large stress at the connecting position are effectively avoided, and long-term stable operation of the structure is guaranteed; one end of the floor support plate is folded downwards, the other end of the floor support plate is folded upwards, the downward folded edge has a flow guide function, accumulated water can be drained in time, the structural performance is prevented from being influenced by the accumulated water, the upward folded edge enhances the edge strength, concrete can be effectively prevented from overflowing during construction, and the construction quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly to a steel structure cantilever slab structure. Background Art

[0002] At present, the construction of traditional cantilever slabs mostly relies on the formwork support system. However, in the case of a large height difference (such as exceeding 1.2 m of the lower structure), there are elevation differences (50 mm) and thickness differences between the inner and outer floor slabs, and there is a water channel on the inner side, resulting in the inability to continuously lay the floor slab. In this case, the formwork support cost is high and it is difficult to achieve the continuous laying of the floor slab.

[0003] 1. As disclosed in a Chinese patent for a new type of support device for prefabricated steel structure cantilever slabs (Application No.: CN202321554188.5), the present utility model relates to the technical field of support devices, and discloses a new type of support device for prefabricated steel structure cantilever slabs, including a device main body. The device main body includes a support base, a support frame is arranged at the top end of the support base, a support top plate is connected to the top end of the support frame. The support frame includes an external adjustment insertion cylinder and an internal adjustment insertion plate. The internal adjustment insertion plate is slidably inserted into the internal of the external adjustment insertion cylinder, and limiting groove bodies are evenly arranged on both sides of the internal adjustment insertion plate. The present utility model is provided with an external adjustment insertion cylinder, an internal adjustment insertion plate, a limiting groove body, an insertion through hole and a limiting pin.

[0004] 2. As disclosed in a Chinese patent for an assembled device for supporting a cantilever slab of a steel structure building (Application No.: CN202222824042.X), the present application relates to an assembled device for supporting a cantilever slab of a steel structure building, and relates to the technical field of building construction. The assembled device in the present application includes a support component and a connection component. The support component includes a first mother rod, a second mother rod and two sub-rods. The connection component includes a fixture base and two supports. One ends of the two sub-rods are respectively slidably inserted into the first mother rod and the second mother rod, and the other ends of the two sub-rods are respectively connected to the two supports. One ends of the first mother rod and the second mother rod are respectively connected to the fixture base. The fixture base is connected to the lower flange of the steel beam, and a cross beam is laid on the two supports to start the upper operation.

[0005] The traditional edge sealing method is prone to slurry leakage, and the connection stability between the floor slab and the support structure is insufficient. The above problems are solved by the innovative combination of the channel steel cantilever system and the double-sided flanged floor slab.

[0006] Therefore, it is necessary to propose a steel structure cantilever slab structure for the above problems. Summary of the Invention

[0007] Aiming at the deficiencies existing in the above-mentioned prior art, the purpose of the present invention is to provide a steel structure cantilever slab structure to solve the above problems.

[0008] A steel structure cantilever slab structure, comprising a cantilever channel steel, a floor slab, a side beam and a main structure. The cantilever channel steel is arranged on the floor slab. The cantilever channel steel and the floor slab are both connected to the side beam, and the side beam is arranged on the main structure.

[0009] Preferably, a plurality of the cantilever channel steels are vertically and double-sided welded to the upper flange of the side beam.

[0010] Preferably, one end edge of the floor slab is folded downward, and the other end of the floor slab is folded upward.

[0011] Preferably, the lower chord steel bars of the floor slab are welded to the flange plate of the side beam, the upper chord steel bars of the floor slab are welded to the cantilever channel steel, the lower chord steel bars and the upper chord steel bars are connected by web bars, and the lower chord steel bars and the upper chord steel bars are distributed in a triangular shape.

[0012] Preferably, the folded-down part of the floor slab and the side beam are sealed with double-sided tape.

[0013] Preferably, the folded-up part of the floor slab is sealed with a galvanized steel plate.

[0014] Preferably, the lower half of the galvanized steel plate is welded to the floor slab and fixed with bolts, and the upper half of the galvanized steel plate is welded to the outer side of the cantilever channel steel and fixed with bolts.

[0015] Preferably, the folded-up part of the floor slab and the galvanized steel plate are sealed with double-sided tape.

[0016] Preferably, a triangular strengthening frame is arranged inside the cantilever channel steel, stiffeners are arranged on the floor slab, several convex ribs are arranged between adjacent stiffeners, and strengthening rib plates are arranged on the side of the side beam.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The combination composed of the cantilever channel steel, the floor slab, the side beam and the main structure builds an efficient and stable force transmission system. The cantilever channel steel is responsible for bearing the load of the floor slab and accurately transmitting it to the side beam, and finally the side beam conducts it to the main structure, laying a solid foundation for the stability of the entire cantilever slab structure and ensuring its safe bearing in various use scenarios; Multiple cantilever channel steels are vertically and double-sided welded to the upper flange of the side beam, greatly strengthening the connection between the two, comprehensively improving the structural load-bearing limit, effectively avoiding deformation, damage and other conditions at the connection due to excessive stress, and ensuring the long-term stable operation of the structure; One end of the floor slab is folded downward and the other end is folded upward, with a clever design. The downward fold has a drainage function, which can timely drain accumulated water and avoid affecting the structural performance due to accumulated water. The upward fold enhances the edge strength and can effectively block the overflow of concrete during construction, ensuring the construction quality. Description of the Drawings

[0018] Figure 1 It is the steel structure cantilever slab structure diagram of the present invention; Figure 2 is a schematic side cross-section view of the present invention; Figure 3 is a schematic view of the cantilever channel steel of the present invention connected to the side beam; Figure 4 is a schematic cross-section view of the cantilever channel steel of the present invention; Figures 5 to 7 is a schematic view of the splicing process of the floor bearing plate of the present invention; Figure 8 is a schematic view of the splicing of the lower folded edge of the floor bearing plate of the present invention; Figure 9 is a schematic view of the splicing of the upper folded edge of the floor bearing plate of the present invention; Figure 10 is a schematic view of the upper chord steel bars and the installation of the upper chord steel bars on the floor bearing plate of the present invention; Figure 11 is a top view of the floor bearing plate of the present invention.

[0019] Reference numerals in the figures: 1, cantilever channel steel; 11, triangular stiffening frame; 2, floor bearing plate; 21, lower chord steel bars; 22, upper chord steel bars; 23, stiffening ribs; 24, convex ribs; 25, web bars; 3, side beam; 31, reinforcing rib plates; 4, main structure; 5, double-sided adhesive; 6, galvanized steel sheet; 7, bolts. Detailed Embodiments

[0020] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0024] As Figure 1 And in combination with Figures 2 to 11 As shown, a steel structure cantilever slab structure includes a cantilever channel steel 1, a floor slab 2, a side beam 3, and a main structure 4. The cantilever channel steel 1 is arranged on the floor slab 2. Both the cantilever channel steel 1 and the floor slab 2 are connected to the side beam 3, and the side beam 3 is arranged on the main structure 4.

[0025] Furthermore, a plurality of the cantilever channel steels 1 are vertically and double-sided welded to the upper flange of the side beam 3.

[0026] Beneficial effects of the further technical solution: This welding method enhances the connection strength between the cantilever channel steel 1 and the side beam 3, enabling the cantilever channel steel 1 to more effectively transfer the load transmitted by the floor slab 2 to the side beam 3, improving the overall load-bearing capacity of the structure, and reducing the possibility of deformation or damage at the connection due to stress.

[0027] Furthermore, one end edge of the floor slab 2 is folded downward, and the other end of the floor slab 2 is folded upward.

[0028] Beneficial effects of the further technical solution: The downward folding can play a certain role in guiding the flow, preventing water accumulation on the floor slab 2 and affecting the structural performance; the upward folding can enhance the strength of the edge of the floor slab 2, and at the same time, during construction processes such as pouring concrete, it helps to prevent the concrete from overflowing and ensures the construction quality.

[0029] Furthermore, the lower chord reinforcement 21 of the floor slab 2 is welded to the flange plate of the side beam 3, the upper chord reinforcement 22 of the floor slab 2 is welded to the cantilever channel steel 1, the lower chord reinforcement 21 and the upper chord reinforcement 22 are connected by web reinforcement 25, and the lower chord reinforcement 21 and the upper chord reinforcement 22 are distributed in a triangular shape.

[0030] Beneficial effects of adopting further technical solutions: This welding and distribution method of steel bars enhances the collaborative working ability among the floor slab 2, the cantilever channel steel 1, and the side beam 3. The steel bars distributed in a triangle act like a stable triangular frame, improving the overall structural strength of the floor slab 2 and enabling it to better bear various loads.

[0031] Further, a double-sided tape 5 is used for sealing between the downward folded edge of the floor slab 2 and the side beam 3.

[0032] Beneficial effects of adopting further technical solutions: The sealing function of the double-sided tape 5 can effectively prevent impurities such as rainwater and dust from entering through the connection between the floor slab 2 and the side beam 3, avoiding rust and corrosion of structural components caused by the erosion of these impurities, and thus extending the service life of the structure.

[0033] Further, the upward folded edge of the floor slab 2 is sealed with a galvanized steel plate 6.

[0034] Beneficial effects of adopting further technical solutions: The galvanized steel plate 6 has good anti-rust performance. Sealing the upward folded edge of the floor slab 2 can protect structural components such as steel bars at the folded edge from being eroded by the external environment, and at the same time solve the problem of easy grout leakage in the traditional sealing method.

[0035] Further, the lower half of the galvanized steel plate 6 is welded to the floor slab 2 and fixed with bolts 7, and the upper half of the galvanized steel plate 6 is welded to the outer side of the cantilever channel steel 1 and fixed with bolts 7.

[0036] Beneficial effects of adopting further technical solutions: This fixing method combining welding and bolts 7 not only ensures the connection firmness between the galvanized steel plate 6, the floor slab 2, and the cantilever channel steel 1, but also facilitates installation and adjustment during the construction process, improving the construction efficiency.

[0037] Further, a double-sided tape 5 is used for sealing between the upward folded edge of the floor slab 2 and the galvanized steel plate 6.

[0038] Beneficial effects of adopting further technical solutions: The sealing of the double-sided tape 5 further prevents external impurities from entering the connection between the floor slab 2 and the galvanized steel plate 6, ensuring the tightness of the structure, reducing adverse effects such as air convection caused by gaps, and being beneficial to maintaining a stable internal environment of the structure.

[0039] Further, a triangular reinforcement frame 11 is arranged inside the cantilever channel steel 1, stiffening ribs 23 are arranged on the floor slab 2, several convex ribs 24 are arranged between adjacent two stiffening ribs 23, and reinforcing rib plates 31 are arranged on the side of the side beam 3.

[0040] Beneficial effects of further technical solutions: The triangular stiffening frame 11 enhances the bearing capacity and stability of the cantilever channel steel 1; the stiffening rib 23 improves the bending and shear resistance of the floor slab 2; the reinforcing rib plate 31 enhances the lateral stiffness of the side beam 3. The combined action of these strengthening structures significantly improves the structural strength and stability of the entire steel structure cantilever slab, enabling it to adapt to more complex usage environments and load conditions.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: The combination of the cantilever channel steel 1, the floor slab 2, the side beam 3 and the main structure 4 builds an efficient and stable force transmission system. The cantilever channel steel 1 is responsible for bearing the load of the floor slab 2 and accurately transmitting it to the side beam 3, and finally the side beam 3 conducts it to the main structure 4, laying a solid foundation for the stability of the entire cantilever slab structure and ensuring its safe load-bearing capacity in various usage scenarios; multiple cantilever channel steels 1 are vertically and double-sided welded to the upper flange of the side beam 3, greatly strengthening the connection between the two, comprehensively improving the structural load-bearing limit, effectively avoiding deformation, damage and other conditions at the connection due to excessive stress, and ensuring the long-term stable operation of the structure; one end of the floor slab 2 is folded downward and the other end is folded upward, with a clever design. The downward fold has a drainage function, which can timely drain away accumulated water and avoid affecting the structural performance due to accumulated water. The upward fold enhances the edge strength, which can effectively prevent concrete from overflowing during construction and ensure the construction quality.

[0042] The combination of the cantilever channel steel 1, the floor slab 2, the side beam 3 and the main structure 4 builds an efficient and stable force transmission system. The cantilever channel steel 1 is responsible for bearing the load of the floor slab 2 and accurately transmitting it to the side beam 3, and finally the side beam 3 conducts it to the main structure 4, laying a solid foundation for the stability of the entire cantilever slab structure and ensuring its safe load-bearing capacity in various usage scenarios; multiple cantilever channel steels 1 are vertically and double-sided welded to the upper flange of the side beam 3, greatly strengthening the connection between the two. This stable connection enables the cantilever channel steel 1 to more efficiently transfer the load from the floor slab 2 to the side beam 3, comprehensively improving the structural load-bearing limit, effectively avoiding deformation, damage and other conditions at the connection due to excessive stress, and ensuring the long-term stable operation of the structure; one end of the floor slab 2 is folded downward and the other end is folded upward, with a clever design. The downward fold has a drainage function, which can timely drain away accumulated water and avoid affecting the structural performance due to accumulated water; the upward fold enhances the edge strength, which can effectively prevent concrete from overflowing during construction and ensure the construction quality, optimizing the performance and usage effect of the floor slab 2 from multiple aspects.

[0043] Working principle: Step 1: Set the side beam 3 on the main structure 4 and fix it in accordance with the design position to ensure the stability and levelness of the side beam 3.

[0044] Step 2: Vertically and double-sided weld multiple cantilever channel steels 1 to the upper flange of the side beam 3. The welding process shall be strictly operated in accordance with the welding process requirements to ensure the welding quality and firmly connect the cantilever channel steel 1 and the side beam 3.

[0045] Step 3: Place the floor deck 2 under the cantilever channel steel 1. Note that one end edge of the floor deck 2 is folded downward and the other end is folded upward.

[0046] Step 4: Weld the lower chord steel bars 21 of the floor deck 2 to the flange plate of the side beam 3, and weld the upper chord steel bars 22 to the cantilever channel steel 1 to ensure that the lower chord steel bars 21 and the upper chord steel bars 22 are distributed in a triangle to enhance the structural stability.

[0047] Step 5: Paste double-sided tape 5 between the downward folded edge of the floor deck 2 and the side beam 3 for sealing to prevent sundries and rainwater from entering the structure. Use galvanized steel sheet 6 to seal the upward folded edge of the floor deck 2. First, weld the lower half of the galvanized steel sheet 6 to the floor deck 2 and fix it with bolts 7; then weld the upper half of the galvanized steel sheet 6 to the outer side of the cantilever channel steel 1 and fix it with bolts 7. Paste double-sided tape 5 between the upward folded edge of the floor deck 2 and the galvanized steel sheet 6 for sealing.

[0048] Step 6: Install triangular stiffeners 11 inside the cantilever channel steel 1 to enhance the load-bearing capacity of the cantilever channel steel 1. Install stiffening ribs 23 on the floor deck 2 to improve the structural strength of the floor deck 2. Install reinforcing rib plates 31 on the side of the side beam 3 to enhance the stability of the side beam 3.

[0049] Step 7: Conduct a comprehensive quality inspection on the installation of the entire steel structure cantilever slab, including whether the connections of each component are firm, whether the sealing and edge sealing meet the requirements, whether the strengthening structure is installed in place, etc., to ensure that the steel structure cantilever slab meets the design and use requirements.

[0050] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A steel cantilever plate structure, characterized in that: It comprises a cantilevered channel steel (1), a floor deck (2), a side beam (3) and a main structure (4), wherein the cantilevered channel steel (1) is arranged on the floor deck (2), the cantilevered channel steel (1) and the floor deck (2) are both connected to the side beam (3), and the side beam (3) is arranged on the main structure (4).

2. A steel cantilever plate structure as claimed in claim 1, characterized in that: A plurality of cantilever channel steels (1) are vertically welded on both sides to the upper flange of the edge beam (3).

3. The steel cantilever plate structure according to claim 1, characterized in that: One end edge of the floor decking plate (2) is folded downward, and the other end edge of the floor decking plate (2) is folded upward.

4. The steel cantilever plate structure according to claim 1, characterized in that: The lower chord steel bars (21) of the floor decking plate (2) are welded to the flange plate of the edge beam (3), the upper chord steel bars (22) of the floor decking plate (2) are welded to the cantilever channel steel (1), the lower chord steel bars (21) and the upper chord steel bars (22) are connected via web bars (25), and the lower chord steel bars (21) and the upper chord steel bars (22) are distributed in a triangular shape.

5. The steel cantilever plate structure according to claim 1, characterized in that: Double-sided adhesive tape (5) is used to seal the downward folded edge of the floor decking plate (2) and the edge beam (3).

6. The steel cantilever plate structure according to claim 1, characterized in that: The upward folded edge of the floor decking plate (2) is sealed with a galvanized steel plate (6).

7. A steel cantilever plate structure as claimed in claim 6, characterized in that: The lower half of the galvanized steel plate (6) is welded to the floor deck (2) and fixed by bolts (7), and the upper half of the galvanized steel plate (6) is welded to the outer side of the cantilever channel steel (1) and fixed by bolts (7).

8. The steel cantilever plate structure according to claim 6, characterized in that: The upward folded edge of the floor decking plate (2) and the galvanized steel plate (6) are sealed with double-sided tape (5).

9. The steel cantilever plate structure according to claim 6, characterized in that: A triangular reinforcement frame (11) is arranged inside the cantilever channel steel (1), the floor decking plate (2) is provided with stiffening ribs (23), a plurality of convex ribs (24) are arranged between two adjacent stiffening ribs (23), and a reinforcing rib plate (31) is arranged on the side of the side beam (3).

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