Metal member for building stair

Abstract

A kind of metal component for building stair, including first metal base plate, the two sides of first metal base plate length direction are equipped with first vertical plate, each first vertical plate is integrated with first metal base plate, the upper side of first vertical plate is step-shaped, still install several groups of truss on first metal base plate, each truss is arranged along the length direction of first metal base plate.The positive effect of the utility model is that:the utility model uses metal component as part of prefabricated structure, avoids formwork support and other field operation, reduces construction cost and cycle, improves construction efficiency, and the weight of metal component is relatively complete prefabricated stair smaller, facilitate to realize transportation and hoisting operation, reduce transportation and installation cost.The introduction of truss structure can effectively improve the carrying capacity and deformation resistance of component, ensure the stability and safety of stair structure, in addition, the metal component for building stair also has the advantages of strong installation adaptability, convenient installation process and environmental protection and energy saving.

Description

Technical Field

[0001] This utility model relates to the field of staircase construction technology, specifically a metal component for building staircases. Background Technology

[0002] Existing building staircase construction generally involves either cast-in-place construction or the use of precast staircases. Cast-in-place construction requires on-site formwork erection, rebar tying, and concrete pouring for curing before the formwork is removed. This involves a large workload for support, is greatly affected by the construction space, and has a long overall construction period, resulting in higher construction costs. Precast staircases, due to their relatively large weight and volume, face certain limitations in transportation. Furthermore, the hoisting process is more difficult, leading to higher installation costs and a reduction in staircase production efficiency to some extent. Utility Model Content

[0003] The purpose of this utility model is to provide a metal component for building staircases that is relatively easy to transport and hoist, and can achieve concrete pouring without support, thus solving the problems in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A metal component for building stairs includes a first metal base plate, with first upright plates on both sides along the length of the first metal base plate. Each first upright plate is integrally connected to the first metal base plate. The upper side of the first upright plate is stepped. Several sets of trusses are also installed on the first metal base plate, with each truss arranged along the length of the first metal base plate. The truss includes a top chord, which is arranged parallel to the first metal base plate. Web reinforcement is connected to both sides of the top chord along its length. Each web reinforcement is made by continuously bending a single steel bar. The bottom of the continuously bent web reinforcement is welded and fixed to the first metal base plate. Side reinforcement is also provided on the outside of the web reinforcement, arranged parallel to the top chord. The bottom of the continuously bent web reinforcement is a flat section of steel bar, parallel to the length of the top chord. The top chord is a steel pipe with an oblong cross-section. A first connecting reinforcement is provided between the first upright plates on both sides, arranged perpendicular to the top chord, and the first connecting reinforcement passes through the top chord and side reinforcement of all trusses. The truss has a reinforcing frame structure at its length end. The reinforcing frame structure includes a first reinforcing rod welded to a first metal base plate. Both ends of the first reinforcing rod are connected to second reinforcing rods, and the ends of the second reinforcing rods are welded and fixed to both sides of the upper chord end. The inner surface of the first vertical plate has stepped stiffeners. Second connecting ribs connect the two first vertical plates, arranged perpendicular to the upper chord and located above it. Connecting folded ribs are welded and fixed between the first vertical plate and the adjacent truss upper chord. The second connecting ribs are fixed at the upper part of the bent stiffener, and one end of the connecting folded rib is fixed at the lower part of the bent stiffener. A second metal base plate is connected to the upper part of the first metal base plate. Several sets of trusses are provided on the second metal base plate. Second vertical plates are provided on both sides of the second metal base plate. A first sealing plate is provided at the end of the second metal base plate. The first sealing plate, the second vertical plate, and the second metal base plate are integrated into one unit. The lower part of the first metal base plate is connected to a third metal base plate. The third metal base plate is provided with several sets of trusses. The third metal base plate is provided with third upright plates on both sides. The end of the third metal base plate is provided with a second sealing plate. The second sealing plate, the third upright plate and the third metal base plate are connected as one unit.

[0005] The positive effects of this utility model are as follows: The metal component for building staircases described in this utility model includes a metal base plate and two side uprights. Several trusses are also installed on the metal base plate. Compared to traditional cast-in-place construction, using metal components as a partially prefabricated structure avoids on-site operations such as formwork support, reducing construction costs and time, and improving construction efficiency. Furthermore, the metal component is lighter than a complete prefabricated staircase, facilitating transportation and hoisting operations, thus reducing transportation and installation costs. The introduction of the truss structure effectively enhances the load-bearing capacity and deformation resistance of the component, ensuring the stability and safety of the staircase structure. In addition, the metal component for building staircases also has advantages such as strong installation adaptability, convenient installation process, and environmental friendliness and energy saving. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 yes Figure 2 Top view; Figure 4 yes Figure 2 An enlarged view of the sectional view along the AA direction; Figure 5 yes Figure 3 An enlarged view of the BB-axis sectional view; Figure 6 This is a schematic diagram of the structure of the present invention with a metal base plate added to the lower part. Detailed Implementation

[0007] The present invention relates to a metal component for building staircases, such as... Figure 1-6 As shown, it includes a first metal base plate 1, and first upright plates 2 are provided on both sides of the first metal base plate 1 along its length. Each first upright plate 2 is integrated with the first metal base plate 1. The upper side of the first upright plate 2 is stepped. Several sets of trusses are also installed on the first metal base plate 1, and each truss is arranged along the length of the first metal base plate 1.

[0008] Furthermore, the truss includes an upper chord 3, which is arranged parallel to the first metal base plate 1. Web reinforcement 4 is connected to both sides of the upper chord 3 along its length. Each web reinforcement 4 is made by continuously bending a steel bar. The bottom of the continuously bent web reinforcement 4 is welded and fixed to the first metal base plate 1. Side reinforcement 6 is also provided on the outside of the web reinforcement 4, which is arranged parallel to the upper chord 3.

[0009] Furthermore, the bottom of the continuous bends of the web reinforcement 4 are all flat steel bars 5, and the flat steel bars 5 are parallel to the length direction of the upper chord 3.

[0010] Furthermore, the upper chord 3 is a steel pipe with an oblong cross-section. Alternatively, the upper chord 3 can be made of reinforcing steel profiles or other shaped steel materials.

[0011] Furthermore, a first connecting bar 7 is provided between the first upright plates 2 on both sides. The first connecting bar 7 is arranged perpendicular to the upper chord 3 and passes through the upper chord 3 and side bars 6 of all trusses.

[0012] Furthermore, the truss is provided with a reinforcing frame structure at its length end. The reinforcing frame structure includes a first reinforcing rod 8 welded to the first metal base plate 1. Both ends of the first reinforcing rod 8 are connected to second reinforcing rods 9. The ends of the second reinforcing rods 9 are welded and fixed to both sides of the end of the upper chord 3.

[0013] The inner side of the first upright plate 2 is provided with a stepped stiffening plate 10. A second connecting rib 11 is connected between the two sides of the first upright plate 2. The second connecting rib 11 is arranged perpendicular to the upper chord 3 and is located on the upper side of the upper chord 3. A connecting folded rib 12 is welded and fixed between the first upright plate 2 and the adjacent truss upper chord 3. The second connecting rib 11 is fixed at the upper part of the bending of the stiffening plate 10, and one end of the connecting folded rib 12 is fixed at the lower part of the bending of the stiffening plate 10.

[0014] Furthermore, a second metal base plate 13 is connected to the upper part of the first metal base plate 1. Several sets of trusses are provided on the second metal base plate 13. Second upright plates 14 are provided on both sides of the second metal base plate 13. A first sealing plate 15 is provided at the end of the second metal base plate 13. The first sealing plate 15, the second upright plates 14 and the second metal base plate 13 are connected as one unit.

[0015] The lower part of the first metal base plate 1 is connected to the third metal base plate 16. The third metal base plate 16 is provided with several sets of trusses. The third metal base plate 16 is provided with third upright plates 17 on both sides. The end of the third metal base plate 16 is provided with a second sealing plate 18. The second sealing plate 18, the third upright plates 17 and the third metal base plate 16 are connected as one unit.

[0016] Compared to traditional precast staircases, the metal components used in the aforementioned building staircase structure are smaller in size and weight, making them easier to transport and install. After the metal components are placed in place and welded in place, a precast template is placed in front of the vertical face of the first upright slab 2, and concrete is poured into the space between the metal base plate and the upright slab to form the staircase. Compared to traditional cast-in-place construction, there is no need for on-site formwork support and rebar tying, it is less affected by the installation environment, and the production efficiency is significantly improved.

[0017] The internal truss can enhance strength and structural stability. It is welded to the metal base plate by the flat section steel bar 5, and two sets of connecting bars and connecting folded bars 12 are also provided between the vertical plates on both sides, which further improves the connection performance of the overall structure.

[0018] The metal base plate installed on the upper or lower part of the metal components is to enable the horizontal connection between the two sets of metal components, that is, to connect two staircases in opposite directions on the same floor, forming a rest platform at the turning point between the two staircases, further reducing the amount of on-site work.

[0019] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A metal component for building staircases, characterized in that: It includes a first metal base plate (1), and first upright plates (2) are provided on both sides of the length direction of the first metal base plate (1). Each first upright plate (2) is integrated with the first metal base plate (1). The upper side of the first upright plate (2) is stepped. Several sets of trusses are also installed on the first metal base plate (1). Each truss is arranged along the length direction of the first metal base plate (1).

2. A metal component for building staircases according to claim 1, characterized in that: The truss includes an upper chord (3), which is arranged parallel to the first metal base plate (1). Both sides of the upper chord (3) are connected with web reinforcement (4). Each web reinforcement (4) is made by continuously bending a steel bar. The bottom of the continuous bending of the web reinforcement (4) is welded and fixed to the first metal base plate (1). Side reinforcement (6) is also provided on the outside of the web reinforcement (4). The side reinforcement (6) is arranged parallel to the upper chord (3).

3. A metal component for building staircases according to claim 2, characterized in that: The bottom of the continuous bends of the web reinforcement (4) are all flat sections of steel bars (5), and the length direction of the flat sections of steel bars (5) is parallel to that of the upper chord (3).

4. A metal component for building staircases according to claim 2, characterized in that: The upper chord (3) is a steel pipe with an oblong cross section.

5. A metal component for building staircases according to claim 2, characterized in that: A first connecting bar (7) is provided between the first upright plate (2) on both sides. The first connecting bar (7) is arranged perpendicular to the upper chord (3). The first connecting bar (7) passes through the upper chord (3) and side bars (6) of all trusses.

6. A metal component for building staircases according to claim 2, characterized in that: The truss is provided with a reinforcing frame structure at the end along its length. The reinforcing frame structure includes a first reinforcing rod (8) welded to the first metal base plate (1). Both ends of the first reinforcing rod (8) along its length are connected to a second reinforcing rod (9). The ends of the second reinforcing rod (9) are welded and fixed to both sides of the end of the upper chord (3).

7. A metal component for building staircases according to claim 2, characterized in that: The inner side of the first upright plate (2) is provided with a stepped stiffening plate (10). A second connecting rib (11) is connected between the two first upright plates (2). The second connecting rib (11) is arranged perpendicular to the upper chord (3). The second connecting rib (11) is located on the upper side of the upper chord (3). A connecting folded rib (12) is welded and fixed between the first upright plate (2) and the adjacent truss upper chord (3). The second connecting rib (11) is fixed at the upper part of the bending of the stiffening plate (10), and one end of the connecting folded rib (12) is fixed at the lower part of the bending of the stiffening plate (10).

8. A metal component for building staircases according to claim 1, characterized in that: The upper part of the first metal base plate (1) is connected to the second metal base plate (13). The second metal base plate (13) is provided with several sets of trusses. The second metal base plate (13) is provided with second upright plates (14) on both sides. The end of the second metal base plate (13) is provided with a first sealing plate (15). The first sealing plate (15), the second upright plate (14) and the second metal base plate (13) are connected as one unit.

9. A metal component for building staircases according to claim 1, characterized in that: The lower part of the first metal base plate (1) is connected to a third metal base plate (16). Several sets of trusses are provided on the third metal base plate (16). The third metal base plate (16) has a third upright plate (17) on both sides. The end of the third metal base plate (16) has a second sealing plate (18). The second sealing plate (18), the third upright plate (17) and the third metal base plate (16) are connected as one unit.

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