Environment-friendly high-strength PC prefabricated stair with multiple security protection structure

Abstract

The utility model discloses a kind of environmental protection high-strength PC prefabricated stair with multiple safety protection structure, it is related to PC prefabricated stair technical field, including concrete support main part and sound insulation reinforcing mechanism, the inside fixed connection of concrete support main part is equipped with sound insulation reinforcing mechanism, and sound insulation reinforcing mechanism includes the honeycomb sound insulation cavity fixedly connected in the inside position of concrete support main body, the inside fixed connection of honeycomb sound insulation cavity is equipped with glass fibre filling, and the outer surface fixed connection of honeycomb sound insulation cavity is equipped with glass fibre net, the bottom fixed connection of concrete support main body is equipped with damping sound insulation pad.The environmental protection high-strength PC prefabricated stair with multiple safety protection structure compared with existing ordinary PC prefabricated stair, prolongs sound wave reflection path, improves low-frequency noise loss, absorbs middle-high frequency noise, avoids sound insulation structure deformation, improves sound insulation effect, and keeps high friction coefficient, improves impact resistance, prolongs life, increases antiskid grade.

Description

Technical Field

[0001] This utility model relates to the field of PC prefabricated staircase technology, specifically to an environmentally friendly, high-strength PC prefabricated staircase with multiple safety protection structures. Background Technology

[0002] Precast concrete (PC) staircases are concrete staircase components manufactured in factories and assembled on-site. They are an important part of prefabricated buildings. Using steel reinforcement as a framework, the concrete is mixed with steel according to the design ratio and then prefabricated in standardized molds through processes such as pouring and curing. They are characterized by precise dimensions and stable quality. Compared to traditional cast-in-place staircases, the core advantage of PC precast staircases lies in the efficiency and controllability brought by industrialized production. In the factory, automated equipment can complete steel reinforcement binding, concrete pouring, and steam curing, reducing on-site wet work and shortening the construction cycle by more than 30%. At the same time, the prefabrication process allows for strict control of concrete strength (usually not lower than C30) and the thickness of the steel reinforcement protective layer, reducing on-site construction errors and improving structural safety. However, existing PC precast staircases have certain drawbacks.

[0003] For example, a precast PC staircase with application number CN202220257805.4 includes: two floor slabs at different heights, each slab having two embedded bolts; a staircase body between the two floor slabs, the staircase body including several steps and bases at both ends; four mounting holes at the bolt positions on the bases, the bolts being able to be located within the mounting holes; four fastening sleeves fitted into the mounting holes on the bases; four anti-loosening sleeves threaded to the inner walls of the fastening sleeves, the anti-loosening sleeves being coaxial with the fastening sleeves; and four fastening posts located within the anti-loosening sleeves, the fastening posts being coaxial with the anti-loosening sleeves, the fastening posts being threaded to the bolts, the bolts being able to pass through the fastening posts. This application has the effect of preventing cracks in the concrete within the mounting holes during the drying process. However, this precast PC staircase is prone to noise pollution and other problems, and in certain scenarios, it has a low coefficient of friction, poor impact resistance, and is prone to slipping.

[0004] Therefore, in view of this, we have studied and improved the existing structure to propose an environmentally friendly, high-strength precast PC staircase with multiple safety protection structures. Utility Model Content

[0005] The purpose of this invention is to provide an environmentally friendly, high-strength precast PC staircase with multiple safety protection structures to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly high-strength precast PC staircase with multiple safety protection structures, comprising a concrete support body and a sound insulation reinforcement mechanism. The sound insulation reinforcement mechanism is fixedly connected inside the concrete support body, and the sound insulation reinforcement mechanism includes a honeycomb-shaped sound insulation cavity fixedly connected inside the concrete support body. The honeycomb-shaped sound insulation cavity is filled with glass fiber, and the outer surface of the honeycomb-shaped sound insulation cavity is fixedly connected with a glass fiber mesh. The bottom of the concrete support body is fixedly connected with a damping sound insulation pad, and the surface of the concrete support body is fixedly connected with a wear-resistant and anti-slip mechanism.

[0007] Preferably, the wear-resistant and anti-slip mechanism includes a silicon carbide anti-slip strip fixedly connected to the outer surface of the concrete support body, and an aluminum alloy anti-slip protrusion fixedly connected to one side of the silicon carbide anti-slip strip. An anti-slip textured groove is fixedly connected inside the silicon carbide anti-slip strip, and an elastic anti-slip pad is fixedly connected inside the anti-slip textured groove.

[0008] Preferably, a sealing and soundproof strip is fixedly connected to one side of the concrete support body, and a rock wool fireproof core layer is fixedly connected to the outer surface of the concrete support body.

[0009] Preferably, the outer surface of the rock wool fireproof core layer is fixedly connected with fireproof sealant, and one side of the fireproof sealant is fixedly connected with an intumescent fireproof coating.

[0010] Preferably, the outer surface of the intumescent fire-retardant coating is fixedly connected with elastic buffer corner protectors.

[0011] Preferably, one side of the elastic buffer corner protector is fixedly connected to a steel frame frame, and one side of the concrete support body is provided with a detachable support frame.

[0012] Preferably, a guardrail is fixedly connected to the top of the detachable support frame, and an anti-slip handrail is fixedly connected to the top of the guardrail; a support triangle is fixedly connected to the bottom of the concrete support body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the sound insulation strengthening mechanism, can extend the reflection path of sound waves in the cavity. Because the honeycomb sound insulation cavity made of aluminum alloy has a hexagonal three-dimensional structure, it has a high degree of fit with the inner wall of the concrete support body, improving the transmission loss of low-frequency noise. In particular, it has a significant effect on isolating the footsteps generated by the vibration of the stairs. The glass fiber filling adopts a gradient density design, with the density increasing from the center of the cavity to the edge. The absorption efficiency of mid-to-high frequency noise reaches 92%, which can effectively reduce the noise of daily life such as talking and collision. The glass fiber mesh wraps the honeycomb cavity in a warp and weft interlacing manner, improving the impact strength and preventing the sound insulation structure from deforming due to vibration during the transportation and installation of PC prefabricated stairs. It forms a "absorption-reflection-damping" synergistic system, improving the airborne sound insulation of high-strength PC prefabricated stairs, meeting the needs of hospitals, schools and other places with strict requirements for quiet environment, while reducing the disturbance to neighbors caused by noise transmission.

[0015] 2. This utility model, through the design of a wear-resistant and anti-slip mechanism, ensures that the surface friction coefficient of the precast stairs remains high regardless of whether the conditions are dry or wet. The aluminum alloy anti-slip ridges and silicon carbide anti-slip strips form a "hard support + high wear resistance" composite structure, which improves the impact resistance of the tread edges and prevents edge damage caused by heavy objects hitting them. The anti-slip texture grooves adopt an interlaced sawtooth design to complement the elastic anti-slip pads. The grooves can quickly drain accumulated water, while the elastic pads increase the foot contact area through micro-deformation, working together to build a "three-dimensional anti-slip system". This extends the service life of the PC precast stairs, increases the anti-slip level, and is suitable for special scenarios such as cold regions and damp basements, reducing safety accidents caused by slipping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the sound insulation strengthening mechanism 2 of this utility model;

[0018] Figure 3 This is a schematic diagram of the wear-resistant and anti-slip mechanism 3 of this utility model;

[0019] Figure 4 This is a schematic diagram of the outer surface structure of the concrete support body 1 of this utility model.

[0020] In the diagram: 1. Concrete support structure; 2. Sound insulation reinforcement mechanism; 201. Honeycomb sound insulation cavity; 202. Fiberglass; 203. Fiberglass mesh; 204. Damping sound insulation pad; 3. Wear-resistant and anti-slip mechanism; 301. Silicon carbide anti-slip strip; 302. Aluminum alloy anti-slip raised strip; 303. Anti-slip textured groove; 304. Elastic anti-slip pad; 4. Sealing sound insulation strip; 5. Rock wool fireproof core layer; 6. Fireproof sealant; 7. Intumescent fireproof coating; 8. Elastic buffer corner protectors; 9. Steel frame frame; 10. Detachable support frame; 11. Guardrail; 12. Anti-slip handrail; 13. Supporting tripod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3 As shown, an environmentally friendly high-strength precast PC staircase with multiple safety protection structures includes a concrete support body 1 and a sound insulation reinforcement mechanism 2. The sound insulation reinforcement mechanism 2 is fixedly connected inside the concrete support body 1, and the sound insulation reinforcement mechanism 2 includes a honeycomb-shaped sound insulation cavity 201 fixedly connected inside the concrete support body 1. Glass fiber filling 202 is fixedly connected inside the honeycomb-shaped sound insulation cavity 201, and glass fiber mesh 203 is fixedly connected to the outer surface of the honeycomb-shaped sound insulation cavity 201. A damping sound insulation pad 204 is fixedly connected to the bottom of the concrete support body 1. Furthermore, the surface of the concrete support body 1 is fixedly connected with a wear-resistant and anti-slip mechanism 3. The honeycomb sound insulation cavity 201 is made of aluminum alloy and is embedded inside the concrete support body 1. The cavity is filled with glass fiber filler 202, which has a low density coefficient and a high sound absorption coefficient. The glass fiber mesh 203 has high tensile strength, which enhances the overall structure. The damping sound insulation pad 204 at the bottom of the concrete support body 1 is made of butyl rubber, which has a high weighted sound insulation. The glass fiber filler 202 absorbs mid-to-high frequency noise, and the honeycomb sound insulation cavity 201 blocks the transmission of sound waves, improves the overall sound insulation, and effectively blocks environmental noise.

[0023] like Figure 3As shown, the wear-resistant and anti-slip mechanism 3 includes a silicon carbide anti-slip strip 301 fixedly connected to the outer surface of the concrete support body 1, and an aluminum alloy anti-slip protrusion 302 fixedly connected to one side of the silicon carbide anti-slip strip 301. An anti-slip textured groove 303 is fixedly connected inside the silicon carbide anti-slip strip 301, and an elastic anti-slip pad 304 is fixedly connected inside the anti-slip textured groove 303. The silicon carbide anti-slip strip 301 has a high wear resistance coefficient and is embedded in the edge of the tread of the concrete support body 1. The aluminum alloy anti-slip protrusion 302 welded to its inner side has high compressive strength, which enhances wear resistance. The anti-slip textured groove 303 and the elastic anti-slip pad 304 are anti-slip in both dry and wet conditions, which extends the service life of the precast stairs and increases the anti-slip level.

[0024] Furthermore, a sealing and sound-insulating strip 4 is fixedly connected to one side of the concrete support body 1, and a rock wool fireproof core layer 5 is fixedly connected to the outer surface of the concrete support body 1. A fireproof sealant 6 is fixedly connected to the outer surface of the rock wool fireproof core layer 5, and an intumescent fireproof coating 7 is fixedly connected to one side of the fireproof sealant 6. The sealing and sound-insulating strip 4 is made of EPDM rubber. When the precast staircase of the guardrail 11 is removed and placed against the wall, the stability of the contact between the guardrail 11 and the wall is improved. The rock wool fireproof core layer 5 blocks the spread of fire. The sealant and coating expand when exposed to fire to seal the gaps, thus improving the fireproof and sound insulation performance of the precast staircase and ensuring safety.

[0025] Furthermore, the outer surface of the intumescent fireproof coating 7 is fixedly connected with elastic buffer corner protectors 8, one side of which is fixedly connected with a steel frame frame 9, and one side of the concrete support body 1 is provided with a detachable support frame 10. The elastic buffer corner protectors 8 are made of polyurethane, which has a high compression rebound rate. The steel frame frame 9 connects two sets of elastic buffer corner protectors 8. The detachable support frame 10 is made of aluminum alloy, which has high load-bearing capacity. The detachable support frame 10 can be installed on the side of the concrete support body 1 with bolts. The elastic buffer corner protectors 8 absorb impact energy, and the steel frame frame 9 enhances the structural rigidity, improves the anti-collision level of the staircase, reduces the damage rate during transportation, and improves the impact resistance performance during use.

[0026] Furthermore, a guardrail 11 is fixedly connected to the top of the detachable support frame 10, and an anti-slip handrail 12 is fixedly connected to the top of the guardrail 11. A support triangle 13 is fixedly connected to the bottom of the concrete support body 1. The anti-slip handrail 12 has a textured surface with a high coefficient of friction. The support triangle 13 at the bottom of the concrete support body 1 is made of carbon fiber composite material, which combines high strength and lightweight. The guardrail 11 prevents accidental falls, the anti-slip handrail 12 enhances grip stability, and the support triangle 13 distributes the weight of the staircase to the ground, improving the safety of the precast staircase during installation and meeting the protection needs during construction and use.

[0027] Working Principle: When using this environmentally friendly, high-strength precast PC staircase with multiple safety protection structures, the staircase is first transported to the installation position. The level of the concrete support body 1 is adjusted using the support tripod 13. During use, the silicon carbide anti-slip strips 301 and elastic anti-slip pads 304 ensure the steps are slip-resistant, while the guardrails 11 and anti-slip handrails 12 provide a safe grip. The honeycomb sound insulation cavity 201, glass fiber filling 202, glass fiber mesh 203, and damping sound insulation pads 204 of the sound insulation reinforcement mechanism 2 reduce the noise generated during use and increase the strength of the main body. Then, in the event of a major fire, the rock wool... Fireproof components such as the fireproof core layer 5, fireproof sealant 6, and intumescent fireproof coating 7 play a flame-retardant role. Then, each component is inspected regularly, and debris is cleaned from the anti-slip grooves 303 of the wear-resistant and anti-slip mechanism 3 to ensure the elasticity of the elastic anti-slip pad 304. Finally, the integrity of the fireproof sealant 6 and the intumescent fireproof coating 7 is checked. Loose detachable support frames 10 are tightened in time, and worn elastic buffer corner protectors 8 and steel frame frames 9 are repaired to ensure that the staircase can maintain high strength, anti-slip, fireproof, and sound insulation performance for a long time. This is the working principle of this environmentally friendly high-strength precast PC staircase with multiple safety protection structures.

Claims

1. An environmentally friendly, high-strength precast PC staircase with multiple safety protection structures, comprising a concrete support body (1) and a sound insulation reinforcement mechanism (2), characterized in that, The concrete support body (1) is internally fixedly connected to a sound insulation strengthening mechanism (2), and the sound insulation strengthening mechanism (2) includes a honeycomb sound insulation cavity (201) fixedly connected to the inside of the concrete support body (1). The honeycomb sound insulation cavity (201) is internally fixedly connected to a glass fiber filling (202), and the outer surface of the honeycomb sound insulation cavity (201) is fixedly connected to a glass fiber mesh (203). The bottom of the concrete support body (1) is fixedly connected to a damping sound insulation pad (204), and the surface of the concrete support body (1) is fixedly connected to a wear-resistant and anti-slip mechanism (3).

2. The environmentally friendly high-strength precast PC staircase with multiple safety protection structures according to claim 1, characterized in that, The wear-resistant and anti-slip mechanism (3) includes a silicon carbide anti-slip strip (301) fixedly connected to the outer surface of the concrete support body (1), and an aluminum alloy anti-slip convex strip (302) is fixedly connected to one side of the silicon carbide anti-slip strip (301). An anti-slip textured groove (303) is fixedly connected inside the silicon carbide anti-slip strip (301), and an elastic anti-slip pad (304) is fixedly connected inside the anti-slip textured groove (303).

3. The environmentally friendly high-strength precast PC staircase with multiple safety protection structures according to claim 1, characterized in that, A sealing and soundproof strip (4) is fixedly connected to one side of the concrete support body (1), and a rock wool fireproof core layer (5) is fixedly connected to the outer surface of the concrete support body (1).

4. The environmentally friendly high-strength precast PC staircase with multiple safety protection structures according to claim 3, characterized in that, The outer surface of the rock wool fireproof core layer (5) is fixedly connected with fireproof sealant (6), and one side of the fireproof sealant (6) is fixedly connected with an intumescent fireproof coating (7).

5. The environmentally friendly high-strength precast PC staircase with multiple safety protection structures according to claim 4, characterized in that, The outer surface of the intumescent fire-retardant coating (7) is fixedly connected with elastic buffer corner protectors (8).

6. The environmentally friendly high-strength precast PC staircase with multiple safety protection structures according to claim 5, characterized in that, One side of the elastic buffer corner protector (8) is fixedly connected to a steel frame frame (9), and one side of the concrete support body (1) is provided with a detachable support frame (10).

7. The environmentally friendly high-strength precast PC staircase with multiple safety protection structures according to claim 6, characterized in that, The top of the detachable support frame (10) is fixedly connected to a guardrail (11), and the top of the guardrail (11) is fixedly connected to an anti-slip handrail (12). The bottom of the concrete support body (1) is fixedly connected to a support triangle (13).

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