Stair prefabricated by ECC concrete and provided with safety protection structure
By using ECC precast concrete stairs, combined with guardrails, grouting sleeves, and reinforcing mesh, the problems of insufficient construction efficiency, safety, and durability of existing stair structures have been solved, achieving high-performance modular assembly and safety protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SOUTHWEST JIAOTONG UNIV
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-12
AI Technical Summary
Existing staircase structures mainly use ordinary reinforced concrete cast-in-place or steel structures, which have problems such as long construction period, quality greatly affected by site conditions, insufficient fire resistance and durability, and easy cracking of traditional concrete materials. In particular, there is a lack of effective design in terms of safety protection and modular assembly.
The ECC precast concrete staircase, including treads and platform sections, is equipped with guardrails, grouting sleeves and reinforcing mesh, combined with a slightly inclined drainage slope and anti-slip texture. The modular design enables rapid assembly and high-strength connection.
It improves the structural integrity, safety, and construction efficiency of the staircase, enhances its crack resistance and durability, provides safety protection, and is suitable for high-performance building requirements.
Smart Images
Figure CN224228142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stairs, and in particular to a staircase with a safety protection structure made of ECC precast concrete. Background Technology
[0002] Currently, staircase structures mainly adopt ordinary reinforced concrete cast-in-place or steel structures. Cast-in-place concrete staircases have long construction cycles and their quality is greatly affected by site conditions; steel structure staircases have certain shortcomings in terms of fire resistance and durability. In addition, traditional concrete materials are prone to cracking, affecting structural safety and appearance. In recent years, ECC (Engineered Cementitious Composites), as a type of fiber-reinforced concrete with high ductility and high toughness, has been increasingly used in high-performance structures, especially suitable for the manufacture of precast components.
[0003] However, there is currently no specifically designed precast staircase system based on ECC concrete, especially in terms of safety protection, modular assembly, and long-term durability, where there is still room for improvement. Therefore, it is necessary to design a structurally complete, easy-to-assemble, safe and reliable ECC precast staircase system to meet the demands of modern architecture for high-performance components. Utility Model Content
[0004] The main objective of this invention is to provide a staircase with a safety protection structure made of ECC precast concrete, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A safety-protected staircase made of ECC precast concrete is disclosed. The staircase consists of treads and a platform, with the treads located on the lower left side of the platform. Guardrails are installed on both the treads and the platform on the sides of the platform. A grouting sleeve injection hole is provided on the platform, with a grouting sleeve connected to the lower end of the injection hole. Reinforcing mesh is installed inside both the treads and the platform. A side baffle is fixedly installed on the right side of the treads. The left end of the guardrail is fixed to the platform base.
[0007] Preferably, the grouting sleeve injection hole is used for the injection of ECC concrete.
[0008] Preferably, the front end of the platform base is fixedly connected to one end of the step section.
[0009] Preferably, the guardrails for the step section and the guardrails for the platform section are fixed to the stair structure through pre-embedded connectors, and the height of the guardrails is greater than 900mm.
[0010] Preferably, the reinforcing mesh is embedded inside the step section and platform section, and is made of steel bars welded into a mesh structure and integrally cast with ECC material. In the ECC concrete mix, the fiber volume fraction is not less than 2%, the compressive strength is not less than 40MPa, and the crack resistance and ductility are more than 10 times that of ordinary concrete.
[0011] Preferably, each step surface of the step section is provided with a slightly inclined water-guiding slope with an inclination angle of 2° to 4°.
[0012] Preferably, the grouting sleeve achieves a rigid connection between components through on-site grouting, and the step section guardrail and the platform section guardrail are detachable, enabling rapid on-site installation and replacement through a snap-fit structure.
[0013] Preferably, both the step section and the platform section have anti-slip textures on their surfaces, with a texture depth of 2mm to 5mm.
[0014] Compared with the prior art, this utility model has the following beneficial effects: the staircase with a safety protection structure made of ECC precast concrete:
[0015] 1. The entire structure is made of ECC material, which has strong crack resistance and good ductility, significantly improving the service life and safety of the staircase structure;
[0016] 2. Precast components are assembled on-site, resulting in high construction efficiency and stable quality;
[0017] 3. Establish a complete safety protection system to effectively prevent people or objects from falling;
[0018] 4. Standardized mass production is possible, facilitating transportation and installation. Attached Figure Description
[0019] Figure 1 This is an overall structural diagram of a staircase with a safety protection structure prefabricated using ECC concrete, according to this utility model.
[0020] Figure 2 This is a schematic diagram of the connection structure between the side baffle and the step section of this utility model.
[0021] Figure 3 This is a schematic diagram of the grouting sleeve of this utility model.
[0022] Figure 4 This is a schematic diagram of the reinforcing mesh of this utility model.
[0023] In the diagram: 1. Step section; 2. Platform section; 3. Step section guardrail; 4. Side baffle; 5. Grouting sleeve injection hole; 6. Reinforcing mesh; 7. Platform base; 8. Platform section guardrail; 9. Grouting sleeve. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figure 1-4 As shown, a staircase with a safety protection structure made of ECC precast concrete is provided. The staircase consists of a tread section 1 and a platform section 2, with the tread section 1 located on the lower left side of the platform section 2. The tread section 1 is provided with a tread section guardrail 3 and a platform section guardrail 8 on the side of the platform section 2, and a grouting sleeve injection hole 5 is opened on the platform section 2. A grouting sleeve 9 is connected to the lower end of the grouting sleeve injection hole 5. Reinforcing mesh 6 is installed inside both the tread section 1 and the platform section 2, and a side baffle 4 is fixedly installed on the right side of the tread section 1. The left end of the tread section guardrail 3 is fixed to the platform base 7.
[0026] The grouting sleeve injection hole 5 is used for the injection of ECC concrete.
[0027] The front end of the platform base 7 is fixedly connected to one end of the step section 1.
[0028] The step section guardrail 3 and the platform section guardrail 8 are fixed to the stair structure through pre-embedded connectors, and the height of the guardrail is greater than 900mm.
[0029] The reinforcing mesh 6 is embedded inside the step section 1 and the platform section 2. It is made of steel bars welded into a mesh structure and is integrally cast with ECC material. In the mix proportion of the ECC concrete, the fiber volume fraction is not less than 2%, the compressive strength is not less than 40MPa, and the crack resistance and ductility are more than 10 times that of ordinary concrete.
[0030] Each step of the step section 1 has a slightly inclined water-guiding slope with an inclination angle of 2° to 4°.
[0031] The grouting sleeve 9 achieves rigid connection between components through on-site grouting, and the step section guardrail 3 and platform section guardrail 8 are detachable, enabling quick on-site installation and replacement through a snap-fit structure.
[0032] The surfaces of both the step section 1 and the platform section 2 are provided with anti-slip textures, with a texture depth of 2mm to 5mm.
[0033] It should be noted that this utility model is a staircase with a safety protection structure made of ECC precast concrete. Through the overall modular design, this utility model changes the construction method of the staircase from traditional on-site casting to factory prefabrication and on-site assembly.
[0034] Step section 1 and platform section 2 are precast using ECC concrete, which not only has the strength advantages of traditional concrete structures, but also has excellent crack resistance and ductility. Even under high loads or slight displacement, no through cracks will be generated.
[0035] During use, the load-bearing capacity of the staircase is mainly borne by the tread section 1 and the platform section 2. The reinforcing mesh 6 embedded in the structure is firmly wrapped with ECC material, which enhances the overall structure and seismic resistance. Grouting is performed through the grouting sleeve 9 to form an integrated node, ensuring high joint strength and uniform stress distribution, and preventing breakage and loosening.
[0036] The guardrail 3 for the step section and the guardrail 8 for the platform section are connected to the step section 1 and the platform section 2 through pre-embedded connectors. The side baffle 4 is fixed to the outer edge of the step section 1 by pins and connectors, with its lower edge close to the ground, which can effectively prevent tools, small items or gravel from rolling off the edge of the stairs and improve overall safety.
[0037] The steps have an anti-slip texture that provides good traction even in wet conditions, preventing pedestrians from slipping. Each step has a slightly inclined drainage slope to ensure that rainwater or washing water can be quickly drained to the next platform or into a designated drainage channel, preventing water accumulation, surface corrosion, or slippage accidents.
[0038] The entire staircase system is based on the core concept of standardized modular production and assembly. Combined with the high toughness and controllable crack performance of ECC materials, it not only improves the production efficiency of components and the speed of on-site construction, but also enhances the reliability and disaster resistance of the overall structure. It is particularly suitable for building projects with high requirements for safety and construction efficiency, such as schools, hospitals, factories and residential communities.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A staircase with a safety protection structure prefabricated using ECC concrete, characterized in that: The staircase consists of a step section (1) and a platform section (2), with the step section (1) located on the lower left side of the platform section (2). The step section (1) is equipped with a step section guardrail (3) and a platform section guardrail (8) on the side of the platform section (2). A grouting sleeve injection hole (5) is opened on the platform section (2), and a grouting sleeve (9) is connected to the lower end of the grouting sleeve injection hole (5). Reinforcing mesh (6) is installed inside both the step section (1) and the platform section (2). A side baffle (4) is fixedly installed on the right side of the step section (1). The left end of the step section guardrail (3) is fixed on the platform base (7).
2. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: The grouting sleeve injection hole (5) is used for the injection of ECC concrete.
3. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: The front end of the platform base (7) is fixedly connected to one end of the step section (1).
4. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: The step section guardrail (3) and the platform section guardrail (8) are fixed to the stair structure through pre-embedded connectors, and the height of the guardrail is greater than 900mm.
5. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: The reinforcing mesh (6) is embedded in the step section (1) and platform section (2), and is made of steel bars welded into a mesh structure and cast as a whole with ECC material. In the ECC concrete mix, the fiber volume fraction is not less than 2%, the compressive strength is not less than 40MPa, and the crack resistance and ductility are more than 10 times that of ordinary concrete.
6. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: Each step of the step section (1) has a slightly inclined water-guiding slope with an inclination angle of 2° to 4°.
7. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: The grouting sleeve (9) achieves rigid connection between components through on-site grouting. The step section guardrail (3) and the platform section guardrail (8) are detachable and can be quickly installed and replaced on-site through a snap-fit structure.
8. A staircase with a safety protection structure made of precast ECC concrete according to claim 1, characterized in that: Both the step section (1) and the platform section (2) have anti-slip textures on their surfaces, with a texture depth of 2mm to 5mm.