A steel fiber concrete seamless floor

Abstract

The invention discloses a steel fiber concrete seamless floor, comprising a surface layer, a leveling layer, a prefabricated steel fiber concrete layer, a cast-in-place steel fiber concrete layer, a cement mortar protective layer, a waterproof layer, a plain concrete cushion layer and a graded sand and gravel layer; a certain relative displacement is allowed between the prefabricated steel fiber concrete layer and the cast-in-place steel fiber concrete layer so as to better release the additional internal force caused by the shrinkage and deformation of the material; by combining the advantages of the steel fiber concrete structure and the prefabricated assembly technology applied to the floor panel structure and avoiding its disadvantages, the requirements of large buildings for the integrity, aesthetics and construction period of the floor panel structure are met.

Description

Technical Field

[0001] The invention belongs to the field of general building construction and relates to a steel fiber concrete seamless floor. Background Art

[0002] Large buildings, such as large public buildings, industrial plants and commercial centers, usually have high requirements for structural integrity, aesthetics and construction period. Their floor panel structures often adopt structures or construction processes without expansion joints and post-cast strips. If the expansion joints are eliminated in floor panel structures with larger plane dimensions, there may be structural cracking problems caused by concrete shrinkage deformation. That is, if this shrinkage deformation is restricted by the surrounding beam and column structures, tensile stress will be generated in the concrete. When the tensile stress exceeds the tensile strength of the floor panel structure, cracking will occur, which will not only affect the structural safety, but may also cause groundwater leakage problems. When the post-cast strips are eliminated in floor panel structures with larger plane dimensions, harmful cracks caused by uneven shrinkage or uneven settlement of the floor panel structure will be aggravated, further affecting the safety and normal use of the structure.

[0003] For large-size seamless floor panel structures, high-performance concrete materials represented by steel fiber concrete and advanced construction techniques can be used to ensure that prefabricated assembled floor panels have high strength as well as good durability and crack resistance. Compared with ordinary concrete, the shrinkage deformation of steel fiber concrete is significantly reduced, and the bending and compressive fatigue properties are also improved. However, the construction of steel fiber concrete requires certain techniques, such as the amount of steel fiber added and the mixing method, which will affect the performance of concrete. If the steel fiber is unevenly added or not mixed sufficiently, it may affect the performance of concrete; and the steel fiber may be affected by rust during use, especially since the floor panel structure is usually in a humid, corrosive environment, the rust problem of steel fiber is more serious, which may cause the performance of the steel fiber concrete structure to be significantly reduced.

[0004] Prefabrication is an effective solution for large-sized steel fiber concrete seamless floor panels. Prefabrication technology has the advantages of fast construction, energy saving and environmental protection, high component quality, and low engineering cost, and is widely used in industrial and civil construction. However, the application of prefabrication technology in seamless floor panel structures is relatively lagging, because the design and construction of floor panel structures are significantly affected by the formation conditions and are obviously restricted by their own uneven shrinkage or uneven settlement.

[0005] In summary, there is an urgent need to propose a steel fiber concrete seamless floor panel structure that can overcome its own shrinkage deformation and uneven settlement and adopt prefabricated assembly technology to meet the strict requirements of large buildings on the integrity, aesthetics and construction period of the floor panel structure. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention proposes a steel fiber concrete seamless floor, which allows a certain relative displacement between the integral prefabricated steel fiber concrete layer and the cast-in-place steel fiber concrete layer, thereby better releasing the additional internal force caused by material shrinkage and deformation. The floor floor is suitable for the design and construction of floor panel structures of large buildings, and is conducive to combining the advantages of steel fiber concrete structure and prefabricated assembly technology applied to floor panel structures while avoiding their disadvantages, thereby meeting the strict requirements of large buildings on the integrity, aesthetics and construction period of floor panel structures.

[0007] The present application discloses a steel fiber concrete seamless floor, which comprises, from top to bottom, a surface layer, a leveling layer, a prefabricated steel fiber concrete layer, a cast-in-place steel fiber concrete layer, a cement mortar protective layer, a waterproof layer, a plain concrete cushion layer and a graded sand and gravel layer;

[0008] The surface layer is located on the upper surface of the floor panel structure and is in direct contact with the user and is subjected to various physical and chemical effects;

[0009] The leveling layer is located below the surface layer and above the prefabricated steel fiber concrete layer, and is used to ensure the flatness of the ground structure layer;

[0010] The prefabricated steel fiber concrete layer is located below the leveling layer and above the cast-in-place steel fiber concrete layer, and includes a prefabricated steel fiber concrete slab and a sliding steel top plate, and the sliding steel top plate is tightly combined with the bottom of the prefabricated steel fiber concrete slab; the prefabricated steel fiber concrete layer is prefabricated in a factory and formed in one step, without expansion joints and post-casting strips, and is hoisted to a designated position by hoisting equipment during construction;

[0011] The cast-in-place steel fiber concrete layer is located below the prefabricated steel fiber concrete layer and above the cement mortar protective layer, and includes a cast-in-place steel fiber concrete slab and a sliding steel bottom plate, and the sliding steel bottom plate is tightly combined with the top of the cast-in-place steel fiber concrete slab; the sliding steel bottom plate and the sliding steel top plate cooperate with each other and allow relative displacement;

[0012] The cement mortar protective layer is located below the cast-in-place steel fiber concrete layer and above the waterproof layer, and is used to protect the waterproof layer from being damaged during the construction process;

[0013] The waterproof layer is located below the cement mortar protective layer and above the plain concrete cushion layer, and is used to prevent groundwater from penetrating into the building through the ground;

[0014] The plain concrete cushion layer is located below the waterproof layer and above the graded sand and gravel layer, and its functions include but are not limited to ensuring the flatness of the ground structure layer and providing construction space;

[0015] The graded sand and gravel layer is located below the plain concrete cushion layer and above the foundation soil, and its functions include but are not limited to evacuating accumulated water and adapting to the unevenness of the foundation.

[0016] Preferably, a process of embedding tetrafluoroethylene sheets and applying butter tetrafluoroethylene powder is adopted between the sliding steel top plate and the sliding steel bottom plate to reduce the friction coefficient between the sliding steel top plate and the sliding steel bottom plate.

[0017] Preferably, the gap between the prefabricated steel fiber concrete layer and the surrounding structural members is filled and waterproofed, and the materials used include but are not limited to asphalt wood boards, asphalt sand boards and cement mortar.

[0018] Preferably, the foundation soil adopts an appropriate reinforcement scheme according to the properties of the soil layer, including but not limited to layered compaction, grouting reinforcement and deep mixing, so as to improve the bearing capacity and stability of the foundation and reduce foundation settlement and deformation.

[0019] Preferably, the waterproof layer comprises a waterproof coating layer and a waterproof coiled material layer.

[0020] Preferably, the cast-in-place steel fiber concrete slab adopts a skip-bin method cast-in-place process and is provided with a plurality of deformation joints.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: in view of the requirements for large-scale building floor panel structures to adopt structures or construction processes without expansion joints and post-cast strips, a steel fiber concrete seamless floor is disclosed, including a surface layer, a leveling layer, a prefabricated steel fiber concrete layer, a cast-in-place steel fiber concrete layer, a cement mortar protective layer, a waterproof layer, a plain concrete cushion layer and a graded sand and gravel layer; wherein, the negative impact of its own shrinkage and deformation is reduced by adopting steel fiber concrete, and the construction quality and efficiency of the steel fiber concrete structure are improved by prefabricated assembly technology, and a certain relative displacement is allowed between the integral prefabricated steel fiber concrete layer and the cast-in-place steel fiber concrete layer to better release the additional internal force caused by the shrinkage and deformation of the material, which is conducive to combining the advantages of the steel fiber concrete structure and the prefabricated assembly technology in the floor panel structure and avoiding its disadvantages, thereby meeting the strict requirements of large buildings on the integrity, aesthetics and construction period of the floor panel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional schematic diagram of a steel fiber concrete seamless floor of the present invention;

[0023] Figure 2 It is a schematic plan view of a steel fiber concrete seamless floor according to the present invention;

[0024] Figure numbers: 1-surface layer, 2-leveling layer, 3-prefabricated steel fiber concrete layer, 31-prefabricated steel fiber concrete slab, 32-sliding steel top plate, 4-cast-in-place steel fiber concrete layer, 41-cast-in-place steel fiber concrete slab, 42-sliding steel bottom plate, 5-cement mortar protective layer, 6-waterproof layer, 61-waterproof membrane layer, 62-waterproof coating layer, 7-plain concrete cushion layer, 8-graded sand and gravel layer, 91-columns of the ground floor of the building, 92-beams of the ground floor of the building. DETAILED DESCRIPTION

[0025] The following is a more detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and the accompanying drawings so that a person skilled in the art can implement the embodiments after reading the description. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] This application provides Figure 1-2 A steel fiber concrete seamless floor is shown, which comprises, from top to bottom, a surface layer 1, a leveling layer 2, a prefabricated steel fiber concrete layer 3, a cast-in-place steel fiber concrete layer 4, a cement mortar protective layer 5, a waterproof layer 6, a plain concrete cushion layer 7 and a graded sand and gravel layer 8;

[0027] The surface layer 1 is located on the upper surface of the floor panel structure and is in direct contact with the user and is subjected to various physical and chemical effects;

[0028] The leveling layer 2 is located below the surface layer 1 and above the prefabricated steel fiber concrete layer 3, and is used to ensure the flatness of the ground structure layer;

[0029] The prefabricated steel fiber concrete layer 3 is located below the leveling layer 2 and above the cast-in-place steel fiber concrete layer 4, and includes a prefabricated steel fiber concrete slab 31 and a sliding steel top slab 32, and the sliding steel top slab 32 is tightly combined with the bottom of the prefabricated steel fiber concrete slab 31; the prefabricated steel fiber concrete layer 3 is prefabricated in the factory and formed in one step, without expansion joints and post-casting strips, and is hoisted to a designated position by hoisting equipment during construction;

[0030] The cast-in-place steel fiber concrete layer 4 is located below the prefabricated steel fiber concrete layer 3 and above the cement mortar protective layer 5, and includes a cast-in-place steel fiber concrete slab 41 and a sliding steel bottom plate 42, and the sliding steel bottom plate 42 is tightly combined with the top of the cast-in-place steel fiber concrete slab 41; the sliding steel bottom plate 42 cooperates with the sliding steel top plate 32 and allows relative displacement;

[0031] The cement mortar protective layer 5 is located below the cast-in-place steel fiber concrete layer 4 and above the waterproof layer 6, and is used to protect the waterproof layer 6 from being damaged during the construction process;

[0032] The waterproof layer 6 is located below the cement mortar protective layer 5 and above the plain concrete cushion layer 7, and is used to prevent groundwater from penetrating into the building through the ground;

[0033] The plain concrete cushion layer 7 is located below the waterproof layer 6 and above the graded sand and gravel layer 8, and its functions include but are not limited to ensuring the flatness of the ground structure layer and providing construction space;

[0034] The graded gravel layer 8 is located below the plain concrete cushion layer 7 and above the foundation soil, and its functions include but are not limited to evacuating accumulated water and adapting to the unevenness of the foundation.

[0035] In a specific implementation, a process of embedding tetrafluoroethylene sheets and applying butter tetrafluoroethylene powder is adopted between the sliding steel top plate 32 and the sliding steel bottom plate 42 to reduce the friction coefficient between the sliding steel top plate 32 and the sliding steel bottom plate 42 .

[0036] In a specific implementation, the gap between the prefabricated steel fiber concrete layer 3 and the surrounding structural members is filled and waterproofed, and the materials used include but are not limited to asphalt wood boards, asphalt sand boards and cement mortar.

[0037] In specific implementation, appropriate reinforcement schemes are adopted for foundation soil according to the properties of the soil layer, including but not limited to layered compaction, grouting reinforcement and deep mixing, so as to improve the bearing capacity and stability of the foundation and reduce foundation settlement and deformation.

[0038] In a specific implementation, the waterproof layer 6 includes a waterproof coating layer 62 and a waterproof coiled material layer 61 .

[0039] In a specific implementation, the cast-in-place steel fiber concrete slab 41 adopts a skip-bin cast-in-place process and is provided with a plurality of deformation joints.

[0040] It can be seen that the steel fiber concrete seamless floor of the present embodiment allows a certain relative displacement between the integral prefabricated steel fiber concrete layer and the cast-in-place steel fiber concrete layer, thereby better releasing the additional internal force caused by the shrinkage and deformation of the material, and meeting the requirements of the structure or construction process of the floor panel structure of large buildings without expansion joints and post-cast strips.

[0041] The above are one or more embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A steel fiber concrete seamless floor, characterized in that: From top to bottom, it includes the surface layer, leveling layer, prefabricated steel fiber concrete layer, cast-in-place steel fiber concrete layer, cement mortar protective layer, waterproof layer, plain concrete cushion layer and graded sand and gravel layer; The surface layer is located on the upper surface of the steel fiber concrete seamless floor; the leveling layer is located below the surface layer and above the prefabricated steel fiber concrete layer; The prefabricated steel fiber concrete layer is located below the leveling layer and above the cast-in-place steel fiber concrete layer, and includes a prefabricated steel fiber concrete slab and a sliding steel top slab, and the sliding steel top slab is tightly combined with the bottom of the prefabricated steel fiber concrete slab; The cast-in-place steel fiber concrete layer is located below the prefabricated steel fiber concrete layer and above the cement mortar protective layer, and includes a cast-in-place steel fiber concrete slab and a sliding steel bottom plate, and the sliding steel bottom plate is tightly combined with the top of the cast-in-place steel fiber concrete slab; the sliding steel bottom plate and the sliding steel top plate cooperate with each other and allow relative displacement; The cement mortar protective layer is located below the cast-in-place steel fiber concrete layer and above the waterproof layer; the waterproof layer is located below the cement mortar protective layer and above the plain concrete cushion layer; the plain concrete cushion layer is located below the waterproof layer and above the graded sand and gravel layer; the graded sand and gravel layer is located below the plain concrete cushion layer and above the foundation soil.

2. The steel fiber concrete seamless floor according to claim 1, characterized in that: The sliding steel top plate and the sliding steel bottom plate are provided with a process of inlaying tetrafluoroethylene sheets and applying butter tetrafluoroethylene powder.

3. The steel fiber concrete seamless floor according to claim 1, characterized in that: The gaps between the prefabricated steel fiber concrete layer and the surrounding structural members are filled and waterproofed.

4. The steel fiber concrete seamless floor according to claim 1, characterized in that: The waterproof layer comprises a waterproof coating layer and a waterproof coiled material layer.

5. The steel fiber concrete seamless floor according to claim 1, characterized in that: The cast-in-place steel fiber concrete slab adopts a skip-bin method cast-in-place process and is provided with a plurality of deformation joints.

Images