Fabricated double-inclined-plane steel-aluminum stair and installation method thereof

Abstract

This invention provides a prefabricated double-sloped steel-aluminum staircase and its installation method, belonging to the field of prefabricated building staircase technology. It includes a main beam, steel structure steps, a base plate, step panels, and an aluminum glass installation structure. The main beam comprises two steel plates and a connecting rod. Between the two steel plates, from bottom to top, are arranged steel structure steps, a base plate, and a step panel. The aluminum glass installation structure has a glass groove with glass embedded within it. This invention achieves on-site bolt assembly, balancing structural load-bearing strength, overall structural stability, lightweight corrosion resistance, and a neat, integrated installation effect with the glass railing. It is suitable for double-sloped installation requirements and offers convenient and efficient installation.

Description

Technical Field

[0001] This invention provides a prefabricated double-sloping steel-aluminum staircase and its installation method, belonging to the field of prefabricated building staircase technology. Background Technology

[0002] Currently, staircases commonly used in the construction industry are mainly divided into three categories: cast-in-place concrete staircases, traditional pure steel structure welded staircases, and conventional precast assembled staircases. Each type of existing staircase has significant shortcomings and adaptability deficiencies in actual production, construction, and subsequent use. Cast-in-place concrete staircases, in particular, have a long overall construction cycle, requiring multiple processes such as formwork, rebar tying, pouring and curing, and demolding and leveling. This results in a large amount of on-site wet work, generating significant dust and construction waste, which does not align with the current development trend of green construction and prefabricated construction in the building industry. Furthermore, concrete staircases are extremely heavy, significantly increasing the load on the main building structure, making later modification, dismantling, and relocation extremely difficult, and their reusability is almost zero.

[0003] While traditional pure steel welded staircases have high structural strength, they are mostly welded together on-site. Welding operations require highly skilled construction workers and are prone to welding deformation and weld corrosion, resulting in a large workload for subsequent rust and corrosion prevention maintenance. In addition, the surface paving of traditional steel staircase treads and the railing structure are mostly added separately, resulting in low assembly integration, complicated on-site secondary processing procedures, difficulty in controlling installation accuracy, poor adaptability of double-sloping staircases, and a monotonous and unattractive appearance.

[0004] Conventional prefabricated staircases mostly use prefabricated components made of a single material. The steel-aluminum composite structure has poor compatibility, and the tread load-bearing reinforcement structure is simple. Long-term use can easily lead to tread deformation, loose connections, and abnormal noise. Furthermore, the glass railing installation structure of existing prefabricated staircases is poorly designed, with low glass installation positioning accuracy and poor fixing stability. They lack dedicated integrated glass installation slots and bottom support protection structures, making the glass prone to shaking, displacement, or even falling off. The sealing and safety protection performance is also insufficient. In addition, the connection reliability of various components in existing prefabricated staircases is weak. The connection between the treads and the main beam, and between the railings and the staircase body, is not firm enough. The overall seismic resistance and resistance to foot traffic loads are average. The adhesion between the baseboard and the tread panel is poor, which can easily lead to warping, falling off, and excessive wear. The service life is short, making it difficult to meet the multiple usage requirements of rapid prefabrication construction, high load-bearing capacity, lightweight corrosion resistance, and integrated and aesthetically pleasing installation of glass railings. Summary of the Invention

[0005] This invention addresses the aforementioned shortcomings of existing technologies by providing a prefabricated double-sloped steel-aluminum staircase and its installation method. It effectively solves the technical problems of existing staircases, such as long construction cycles, large amounts of on-site wet work and welding, unreasonable structural weight, insufficient structural reinforcement strength, poor stability of glass railing installation, weak connections between components, high maintenance costs, poor reusability, and poor adaptability to double-sloped designs. The invention achieves on-site bolt assembly, balancing structural load-bearing strength, overall structural stability, lightweight corrosion resistance, and a neat, integrated installation effect with the glass railing. It is suitable for double-sloped installation requirements and offers convenient and efficient installation.

[0006] To solve the above problems, the present invention proposes the following technical solution: a prefabricated double-sloping steel-aluminum staircase and its installation method, comprising a main beam, steel structure steps, a base plate, a step panel, and an aluminum glass installation structure. The main beam comprises two steel plates and a connecting rod. The steel structure steps, the base plate, and the step panel are arranged sequentially from bottom to top between the two steel plates. The aluminum glass installation structure is provided with a glass groove, and glass is embedded in the glass groove.

[0007] Furthermore, the connecting rod is placed between two steel plates and fixedly connected to them by bolts, and the connecting rod has a U-shaped structure.

[0008] Furthermore, the steel structure steps are located between two steel plates and are fixedly connected to them by bolts.

[0009] Furthermore, a base plate is fixedly connected to the bottom of the two steel plates.

[0010] Furthermore, the steel structure steps are L-shaped and have reinforcing rods and triangular reinforcing plates at the bottom, with the reinforcing rods passing through the triangular reinforcing plates.

[0011] Furthermore, the aluminum plate glass mounting structure includes an aluminum plate one, an aluminum plate two, and a glass support strip. The aluminum plate one is fixedly connected to the steel plate by welding, and the aluminum plate two is fixedly connected to the steel plate by welding through a fixing rod. A glass groove is formed between the aluminum plate one and the aluminum plate two.

[0012] Furthermore, after the glass is installed, the glass support strip is located at the bottom of the glass.

[0013] Furthermore, the base plate is fixedly connected to the steel structure steps by bolts, and the step panel is fixedly connected to the base plate by adhesive.

[0014] Furthermore, the following installation steps are included: S1. Factory prefabrication and processing: uniformly cut and process two steel plates 1, U-shaped connecting rod 6, L-shaped steel structure step 2, reinforcing rod 7, triangular reinforcing plate 8, and various components of aluminum plate glass installation structure. Simultaneously complete the pre-drilling, pre-welding, and pre-treatment of components. After passing quality inspection, classify, label, and store and transport them. S2. On-site foundation positioning and fixing: The two steel plates 1 with bottom plate 13 are precisely positioned according to the design elevation and inclination angle of the double-sloping staircase, and the bottom plate 13 of the steel plate is fixed to complete the erection of the main beam foundation. S3. The main steps are assembled and fixed. The U-shaped connecting rod 6 is horizontally fixed between the two steel plates 1 with bolts to form an overall beam frame. Then, the steel structure steps 2 with reinforcing rods 7 and triangular reinforcing plates 8 are bolted to the corresponding installation points of the two steel plates 1 in sequence. S4. The step surface is assembled in layers. After aligning the base plate 3 with the surface of the steel structure step 2, it is fixed with bolts. After the bolts are tightened to the standard, a special adhesive is evenly applied to the surface of the base plate 3, and the step panel 4 is attached and laid and left to stand and compact for curing. S5. Aluminum plate and glass alignment and assembly: relying on the pre-formed aluminum plate 19 and aluminum plate 20 to form glass groove 5, the glass is installed along the glass groove 5, so that the bottom of the glass is in contact with the glass support strip 11 to complete the limiting support. Finally, the gaps are sealed and the overall leveling and correction are performed to complete the overall prefabricated installation of the staircase.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the prefabricated double-sloped steel-aluminum staircase and its installation method of the present invention are as follows: 1. The present invention adopts a steel-aluminum composite prefabricated structure. All core components can be prefabricated in the factory in a standardized manner. Only bolt assembly is required on site. There is no need for a large amount of on-site welding and wet concrete work, which greatly shortens the construction period, reduces construction pollution and construction waste, and meets the requirements of green construction development of prefabricated buildings. It is easy to disassemble and reassemble, and the components can be reused, reducing the economic cost of construction and renovation.

[0016] 2. The main beam adopts a combination structure of double steel plates and U-shaped connecting rods. With the bottom plate of the steel plate for leveling and fixing, the main beam has excellent overall resistance to deformation and impact. The double inclined plane has strong adaptability, convenient installation and leveling, and the overall support stability is greatly improved.

[0017] 3. The steel structure steps adopt an L-shaped base structure with double reinforcement design of reinforcing rods and triangular reinforcing plates. The steps have high load-bearing strength and are not easily deformed or bent by long-term frequent stepping. The connection parts are fixed with bolts, eliminating the risk of welding deformation. The structure has a long service life and is convenient for later maintenance and repair.

[0018] 4. A dedicated aluminum plate glass installation structure is added. Aluminum plate one and aluminum plate two are combined to form an integrated glass groove. With the bottom glass support strip, the glass is positioned, fixed and buffered at the bottom. The glass installation is firm and stable, with no risk of shaking, falling off or breaking. The glass railing installation has a high degree of integration, a neat and beautiful appearance, and the steel and aluminum materials are corrosion resistant, rust-proof and oxidation resistant, and suitable for a variety of use environments.

[0019] 5. The steps adopt a layered assembly and fixing structure of steel structure steps, base plate and step panel. The base plate is bolted to ensure the foundation is solid. The step panel is glued and laid. The step surface has high flatness, good wear resistance and anti-slip effect, and is not prone to problems such as lifting, falling off and abnormal noise, resulting in a good user experience.

[0020] 6. The overall combination of steel and aluminum materials results in a reasonable weight, which reduces the load on the main building structure while ensuring the overall structural safety of the staircase. The double-sloping structure design is suitable for various building staircase installation and design requirements, making it widely applicable. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This invention provides a three-dimensional representation of a prefabricated double-sloped steel-aluminum staircase and its installation method. Figure 1 ; Figure 2 This invention provides a three-dimensional representation of a prefabricated double-sloped steel-aluminum staircase and its installation method. Figure 2 ; Figure 3 This invention provides a three-dimensional representation of a prefabricated double-sloped steel-aluminum staircase and its installation method. Figure 3 ; Figure 4 This is a perspective view of the side of a prefabricated double-sloping steel-aluminum staircase and its installation method according to the present invention. Figure 5 This is a partial three-dimensional view of a prefabricated double-sloped steel-aluminum staircase and its installation method according to the present invention. Figure 1 ; Figure 6 This is a partial three-dimensional view of a prefabricated double-sloped steel-aluminum staircase and its installation method according to the present invention. Figure 2 ; Figure 7 This is a partial three-dimensional view of a prefabricated double-sloped steel-aluminum staircase and its installation method according to the present invention. Figure 3 ; Figure 8 This is a sectional perspective view of a prefabricated double-sloping steel-aluminum staircase and its installation method according to the present invention.

[0022] In the picture: 1. Steel plate; 2. Steel structure steps; 3. Base plate; 4. Step panel; 5. Glass channel; 6. Connecting rod; 7. Reinforcing rod; 8. Triangular reinforcing plate; 9. Aluminum plate one; 10. Aluminum plate two; 11. Glass support strip; 12. Fixing rod; 13. Base plate. Detailed Implementation

[0023] 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 only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The technical background of this application fully explains the problems of the prior art, and there are no overarching or general issues. The following description of the invention and specific embodiments will specifically describe the problems that this application needs to solve, clarify the technical problems that the technical solution needs to solve, and determine that the technical solution of this application has beneficial effects compared with the objective prior art.

[0025] like Figures 1-8 As shown, this invention specifically discloses a prefabricated double-sloping steel-aluminum staircase and its installation method. The core assembly consists of a main beam, steel structure steps 2, base plate 3, step panel 4, and aluminum glass installation structure. The whole structure adopts a factory prefabrication and on-site bolt assembly mode, which is suitable for the installation conditions of double-sloping staircases. The structure is sturdy, the installation is efficient, and the protection is strong. Among them, the main beam, as the core load-bearing support component of the staircase, is symmetrically set as two steel plates 1. A connecting rod 6 is installed between the two steel plates 1 to achieve lateral connection and reinforcement, ensuring that the spacing between the two steel plates 1 is constant and the overall deformation resistance meets the standards. The steel structure steps 2, base plate 3, and step panel 4 are assembled layer by layer between the two steel plates 1 from bottom to top, with layered load-bearing and step-by-step installation, taking into account both load-bearing performance and step comfort. The aluminum glass installation structure integrates a glass groove 5, and the glass is directly embedded in the glass groove 5, realizing the integrated assembly of the stair railing and the staircase body, eliminating the need for subsequent additional railing installation, and achieving a high degree of integration.

[0026] In terms of specific assembly and reinforcement, the connecting rod 6 adopts a U-shaped structure, precisely positioned at the corresponding assembly points between the two steel plates 1. Both ends of the connecting rod 6 are respectively attached to the inner walls of the corresponding steel plates 1, and are locked and fixed to the two steel plates 1 using matching fastening bolts. The U-shaped connecting rod 6 exhibits uniform stress distribution and excellent lateral tensile and torsional resistance, effectively preventing spacing deviations and tilting deformations of the two steel plates 1 during long-term use, ensuring the overall structural regularity and support stability of the beam. The bottom of both steel plates 1 is fixedly welded with a base plate 13, made of thickened steel plate material, which directly adheres to the foundation surface for the building staircase installation. Overall leveling and fixing can be achieved using expansion bolts, increasing the contact support area at the bottom of the beam, preventing overall settlement and tilting of the staircase, and improving the stability of the installation foundation.

[0027] As the core load-bearing component of the staircase, the steel structure step 2 adopts an L-shaped integrated bent steel structure design, which is highly rigid and has a large load-bearing capacity. The steel structure step 2 is assembled in a pre-set installation position between two steel plates 1, and both ends are locked to the inner side of the corresponding steel plates 1 with high-strength bolts. There is no on-site welding work, resulting in high assembly precision and convenient disassembly and maintenance. To further enhance the compressive and deformation resistance of the steel structure step 2, a reinforcing rod 7 and a triangular reinforcing plate 8 are installed at the bottom of each steel structure step 2. The reinforcing rod 7 is horizontally inserted and fixed inside the pre-set holes in the triangular reinforcing plate 8. The triangular reinforcing plate 8 is placed close to the weak point of the bottom corner of the steel structure step 2. Utilizing the stability principle of the triangle structure, together with the reinforcing rod 7, a three-dimensional reinforcement support system is formed, which effectively distributes the step load and prevents problems such as bending, denting, deformation, and abnormal noise after long-term use of the steel structure step 2, thus significantly extending the service life of the step.

[0028] The aluminum plate glass installation structure, as the core structure of the integrated stair railing, specifically includes aluminum plate 9, aluminum plate 10, and glass support strip 11. The entire structure is made of lightweight aluminum alloy, which is rust-proof, corrosion-resistant, lightweight, and has a superior appearance. The inner sidewall of aluminum plate 9 is fixedly connected to the outer sidewall of steel plate 1 via factory prefabrication and welding, ensuring a strong and integrated connection. Aluminum plate 10 is welded and fixed to aluminum plate 9 at corresponding positions via fixing rods 12. Aluminum plates 9 and 10 together form a closed glass groove 5, into which the glass is directly embedded, ensuring precise installation and convenient assembly. After the glass is embedded, the glass support strip 11 is precisely positioned at the bottom of the glass, providing all-around load-bearing support, cushioning, shock absorption, and limiting protection. This prevents direct pressure damage to the bottom of the glass and effectively limits lateral and vertical movement, improving the stability and safety of the glass railing installation, resulting in excellent protective performance.

[0029] In terms of the layered paving and assembly of the steps, the base plate 3 is laid on the top end face of the steel structure step 2. The base plate 3 is locked and fixed to the steel structure step 2 below by multiple sets of evenly arranged bolts, and the connection is firm and does not loosen. As an intermediate transition base layer, it effectively levels the flatness of the top surface of the steel structure step 2, and at the same time provides a stable paving base for the upper step panel 4. The step panel 4 is made of anti-slip and wear-resistant decorative board, which is evenly bonded to the top end face of the base plate 3 with a special high-strength adhesive. The adhesion is high, and after paving, the step surface is flat and beautiful, anti-slip and wear-resistant, and comfortable underfoot. With long-term use, it is not easy for the step panel 4 to warp, crack, fall off, wear and fade. Later maintenance and cleaning are simple and convenient.

[0030] The installation process includes the following steps: S1. Factory prefabrication and processing: uniformly cut and process two steel plates 1, U-shaped connecting rod 6, L-shaped steel structure step 2, reinforcing rod 7, triangular reinforcing plate 8, and various components of aluminum plate glass installation structure. Simultaneously complete the pre-drilling, pre-welding, and pre-treatment of components. After passing quality inspection, classify, label, and store and transport them. S2. On-site foundation positioning and fixing: The two steel plates 1 with bottom plate 13 are precisely positioned according to the design elevation and inclination angle of the double-sloping staircase, and the bottom plate 13 of the steel plate is fixed to complete the erection of the main beam foundation. S3. The main steps are assembled and fixed. The U-shaped connecting rod 6 is horizontally fixed between the two steel plates 1 with bolts to form an overall beam frame. Then, the steel structure steps 2 with reinforcing rods 7 and triangular reinforcing plates 8 are bolted to the corresponding installation points of the two steel plates 1 in sequence. S4. The step surface is assembled in layers. After aligning the base plate 3 with the surface of the steel structure step 2, it is fixed with bolts. After the bolts are tightened to the standard, a special adhesive is evenly applied to the surface of the base plate 3, and the step panel 4 is attached and laid and left to stand and compact for curing. S5. Aluminum plate and glass alignment and assembly: relying on the pre-formed aluminum plate 19 and aluminum plate 20 to form glass groove 5, the glass is installed along the glass groove 5, so that the bottom of the glass is in contact with the glass support strip 11 to complete the limiting support. Finally, the gaps are sealed and the overall leveling and correction are performed to complete the overall prefabricated installation of the staircase.

[0031] The following debugging and maintenance steps are included: T1. Pre-assembly sealing treatment: After the aluminum plate glass installation structure is welded and formed and the glass is installed, fill the glass groove 5 and glass connection gap, aluminum plate 9 and steel plate 1 weld joint, and fixed rod 12 welding points one by one with weather-resistant sealant to ensure waterproof and rust-proof sealing protection. T2. Overall stress reinforcement test: Regularly test and tighten the torque of the U-shaped connecting rod 6 and the steel structure step 2 connecting bolts, check the stability of the connection between the triangular reinforcement plate 8 and the reinforcement rod 7, check the stress deformation of the double inclined surface of the steel plate 1 and the corrosion of the welding points, and repair the welding and rust in time. T3. Maintenance and adjustment of glass and aluminum plates: Regularly check the support and limit status of glass support strip 11, the shaking of glass embedded in glass groove 5 and the aging of sealant. Remove the aged sealant and reapply sealant. Weld and reinforce the welding points of loose aluminum plate 10 and fixing rod 12. T4. Maintenance and repair of the stair tread surface: Regularly check the adhesion between the stair tread panel 4 and the base plate 3. Re-apply adhesive to the delaminated or bulging areas and press firmly to ensure the long-term safe and stable use of the stair treads and aluminum glass protective structure.

[0032] During assembly and construction, this invention only requires transporting the prefabricated components from the factory to the construction site. First, the main beam is leveled and fixed by the bottom plate 13 of the steel plate 1. Then, the connecting rod 6 and the steel structure steps 2 are assembled in sequence by bolts. Subsequently, the base plate 3 is fixed and the step panel 4 is glued. Finally, the glass is embedded in the glass groove 5 of the aluminum plate glass installation structure to complete the overall construction. The entire assembly process is simple and fast. No professional welding or wet work personnel are required. It is suitable for various double-sloped staircase installation and renovation needs, and its comprehensive performance and economic benefits are significant.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A fabricated double-bevel steel-aluminum stair and a method for installing the same, characterized by, The structure includes a main beam, steel structure steps (2), base plate (3), step panel (4) and aluminum plate glass installation structure. The main beam includes two steel plates (1) and connecting rods (6). The steel structure steps (2), base plate (3) and step panel (4) are arranged sequentially from bottom to top between the two steel plates (1). The aluminum plate glass installation structure is provided with a glass groove (5) and glass is embedded in the glass groove (5).

2. The prefabricated double-inclined-plane steel-aluminum stair and the mounting method thereof according to claim 1, characterized in that: The connecting rod (6) is placed between two steel plates (1) and fixedly connected to them by bolts. The connecting rod (6) has a U-shaped structure.

3. The prefabricated double-inclined-plane steel-aluminum stair and the mounting method thereof according to claim 1, characterized in that: The steel structure step (2) is located between two steel plates (1) and is fixedly connected to them by bolts.

4. The prefabricated double-inclined-plane steel-aluminum stair and the mounting method thereof according to claim 1, characterized in that: The bottom of the two steel plates (1) is fixedly connected to a base plate (13).

5. The prefabricated double-inclined-plane steel-aluminum stair and the mounting method thereof according to claim 1, characterized in that: The steel structure step (2) has an L-shaped structure and is equipped with a reinforcing rod (7) and a triangular reinforcing plate (8) at the bottom. The reinforcing rod (7) passes through the triangular reinforcing plate (8).

6. The prefabricated double-sloping steel-aluminum staircase and its installation method according to claim 1, characterized in that: The aluminum plate glass installation structure includes aluminum plate one (9), aluminum plate two (10), and glass support strip (11). Aluminum plate one (9) is fixedly connected to steel plate (1) by welding. Aluminum plate two (10) is fixedly connected to aluminum plate two (10) by welding through fixing rod (12). A glass groove (5) is formed between aluminum plate one (9) and aluminum plate two (10).

7. The prefabricated double-sloping steel-aluminum staircase and its installation method according to claim 1, characterized in that: After the glass is installed, the glass support strip (11) is located at the bottom of the glass.

8. The prefabricated double-sloping steel-aluminum staircase and its installation method according to claim 1, characterized in that: The base plate (3) is fixedly connected to the steel structure step (2) by bolts, and the step panel (4) is fixedly connected to the base plate (3) by adhesive.

9. A prefabricated double-sloping steel-aluminum staircase and its installation method according to claim 1, comprising the following installation steps: S1. Factory prefabrication and processing: uniformly cut and process two steel plates (1), U-shaped connecting rods (6), L-shaped steel structure steps (2), reinforcing rods (7), triangular reinforcing plates (8) and aluminum plate glass installation structure components. Simultaneously complete the pre-drilling, pre-welding and pre-treatment of components. After passing quality inspection, classify, label and store for transportation. S2. On-site foundation positioning and fixing: The two steel plates (1) with bottom plate (13) are precisely positioned according to the design elevation and inclination angle of the double-sloped staircase, and the bottom plate (13) of the steel plate is fixed to complete the beam foundation erection; S3. The main steps are assembled and fixed. The U-shaped connecting rod (6) is horizontally fixed between the two steel plates (1) by bolts to form an overall beam frame. Then, the steel structure steps (2) with reinforcing rods (7) and triangular reinforcing plates (8) are bolted to the corresponding installation points of the two steel plates (1). S4. The step surface is assembled in layers. After aligning the base plate (3) with the surface of the steel structure step (2), it is fixed by bolts. After the bolts are tightened to the standard, a special adhesive is evenly applied to the surface of the base plate (3), the step panel (4) is attached and laid, and then left to stand and compact for curing. S5. Aluminum plate glass alignment and assembly: relying on the pre-formed aluminum plate one (9) and aluminum plate two (10) to form a glass groove (5), the glass is installed in the glass groove (5) so that the bottom of the glass is attached to the glass support strip (11) to complete the limiting support. Finally, the gap is sealed and the overall leveling is adjusted to complete the overall assembly installation of the staircase.

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