PH steel pipe web member composite floor slab

Abstract

The utility model relates to the technical field of fabricated buildings, and discloses a PH steel pipe web member composite floor slab which comprises a bottom plate, a high-strength concrete narrow strip plate and a continuous wave-shaped steel pipe web member, a plurality of placement grooves are formed in the top of the bottom plate, tubular one-way trusses are installed in the placement grooves, and the tubular one-way trusses are connected with the high-strength concrete narrow strip plate and the continuous wave-shaped steel pipe web member. A plurality of reinforcing steel pipes are fixedly connected to the bottom of the tubular one-way truss, a plurality of reinforcing ribs are fixedly connected to the interiors of the reinforcing steel pipes, a plurality of positioning grooves are formed in the bottom of the high-strength concrete narrow strip plate, and fixing steel pipes are fixedly connected to the inner walls of the positioning grooves. According to the utility model, the supporting block assists in supporting and disperses the pressure of the tubular one-way truss, and the high-strength concrete narrow strip plate and the tubular one-way truss are tightly connected to share load together and enhance the bending resistance of the floor, so that the floor can bear larger weight, is not easy to deform in the long-term use process, and meets the high requirements of various buildings on the strength and stability of the floor.

Description

A type of PH steel pipe web composite floor slab Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a PH steel pipe web composite floor slab. Background Technology

[0002] Precast composite floor slabs are prefabricated components widely used in building construction, consisting of precast slabs and cast-in-place reinforced concrete layers. They serve both as part of the floor structure and as a permanent formwork for the cast-in-place reinforced concrete composite layer. These slabs are manufactured in factories, resulting in high quality and production efficiency, and significantly reducing on-site construction time and workload.

[0003] The advantages of prefabricated composite floor slabs include: improving structural strength and load-bearing capacity, ensuring the safety, stability and durability of building structures; in terms of construction, factory prefabrication improves efficiency and quality, reduces on-site workload, reduces difficulty and facilitates management; in terms of building function, they can be customized as needed, and the smooth surface is conducive to decoration; in terms of economy, they reduce overall construction costs and reduce later maintenance and renovation costs.

[0004] In existing technologies, the structural design of some floor slabs is not reasonable enough. They adopt simple steel truss structures, which cause severe stress concentration when subjected to large loads. They cannot work effectively together during the stress process. When the floor slab is subjected to tensile force, the reinforcing bars cannot fully exert their tensile strength, resulting in cracks in the floor slab and reducing its service life. To address these issues, a PH steel pipe web composite floor slab is proposed. Summary of the Invention

[0005] To overcome the above deficiencies, this utility model provides a PH steel pipe web composite floor slab, which aims to improve the problem of cracks in some prefabricated composite floor slabs caused by unreasonable stress structure and insufficient tensile strength of reinforcing ribs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A PH steel pipe web composite floor slab includes a base plate and a high-strength concrete narrow strip slab. The top of the base plate has multiple placement slots, and tubular one-way trusses are installed inside the multiple placement slots. Multiple reinforcing steel pipes are fixedly connected to the bottom of the tubular one-way trusses, and multiple reinforcing ribs are fixedly connected inside the multiple reinforcing steel pipes. The bottom of the high-strength concrete narrow strip slab has multiple positioning slots, and fixing steel pipes are fixedly connected to the inner walls of the positioning slots. The base plate is provided with protective components for protecting the floor slab.

[0008] As a further description of the above technical solution:

[0009] Multiple reinforcing steel pipes are externally fixedly connected to the inside of the base plate, the middle part of the reinforcing steel pipes passes through the inside of the mounting groove, and multiple reinforcing ribs are externally fixedly connected to the inside of the base plate;

[0010] As a further description of the above technical solution:

[0011] The bottoms of the plurality of fixed steel pipes are fixedly connected to the top of the tubular one-way truss, and the top of the tubular one-way truss is fixedly connected to the inside of the plurality of positioning slots by welding;

[0012] As a further description of the above technical solution:

[0013] Support blocks are fixedly connected to the inner walls of both sides of the placement groove, and the top inner walls of the multiple support blocks are in contact with the bottom outer wall of the tubular one-way truss.

[0014] As a further description of the above technical solution:

[0015] The protective component includes a base layer, the outside of which is fixedly connected to the top inside of the base plate, a thermal insulation layer is fixedly connected to the bottom side of the base layer, and a waterproof and moisture-proof layer is fixedly connected to the bottom side of the thermal insulation layer.

[0016] As a further description of the above technical solution:

[0017] The base layer is made of high-strength reinforced concrete, the thermal insulation layer is made of extruded polystyrene foam board, and the waterproof and moisture-proof layer is made of SBS modified bitumen waterproof membrane.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, the tubular one-way truss serves as the core load-bearing component. Its unique structure enables it to effectively disperse stress when transmitting loads. Working in conjunction with the reinforcing steel pipe and reinforcing rib, the reinforcing steel pipe enhances the vertical bearing capacity, while the reinforcing rib improves tensile strength and prevents floor slab cracking. The support blocks on both sides of the mounting groove provide auxiliary support, dispersing the pressure on the tubular one-way truss and ensuring its stability. The high-strength concrete narrow strip plate is tightly connected to the tubular one-way truss, sharing the load and enhancing the floor slab's bending resistance. This allows the floor slab to withstand greater weight and is less prone to deformation during long-term use, meeting the high requirements of various buildings for floor slab strength and stability. It is widely applicable to various building types such as residential and commercial buildings.

[0020] 2. In the present utility model, the thermal insulation layer in the protection component adopts extruded polystyrene foam board. Its fine and airtight pore structure can effectively prevent heat transfer, reduce heat loss indoors in winter, block external heat from entering in summer, reduce building energy consumption, create a comfortable temperature environment indoors, achieve building energy conservation. The waterproof and moisture-proof layer at the bottommost layer is made of SBS modified asphalt waterproof coiled material, which closely adheres to the bottom of the floor slab, forms a solid waterproof barrier, effectively prevents water vapor in the ground or air from penetrating into the floor slab structure, avoids the corrosion and damage of the internal steel bars and other structures of the floor slab caused by water vapor, extends the service life of the floor slab, reduces the maintenance cost and potential safety hazards caused by leakage problems, and ensures the long-term stability of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a perspective view of a PH steel pipe web composite floor slab proposed by the present utility model;

[0022] FIG. 2 is a structural schematic diagram of the bottom plate of a PH steel pipe web composite floor slab proposed by the present utility model;

[0023] FIG. 3 is an enlarged view of the part A in FIG. 2;

[0024] FIG. 4 is an enlarged view of the part B in FIG. 2.

[0025] LEGEND DESCRIPTION:

[0026] 1. Bottom plate; 2. Placement groove; 3. Tubular one-way truss; 4. Reinforcing steel pipe; 5. Reinforcing rib; 6. High-strength concrete narrow strip board; 7. Fixed steel pipe; 8. Positioning groove; 9. Support block; 10. Base layer; 11. Thermal insulation layer; 12. Waterproof and moisture-proof layer. DETAILED IMPLEMENTATION MANNER

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] In this article, 'concrete' is the abbreviation of concrete, and 'PH steel pipe' refers to a prestressed high-strength steel pipe with its outer wall treated with anti-corrosion.

[0029] Referring to Figures 2, 3, and 4, one embodiment of this utility model is provided: a PH steel pipe web composite floor slab, including a base plate 1 and a high-strength concrete narrow strip slab 6. The top of the base plate 1 is provided with multiple placement slots 2, and tubular one-way trusses 3 are installed inside the multiple placement slots 2. The base plate 1 serves as the basic structure of the entire floor slab and provides an installation platform for other components. The placement slots 2 on its top are used to accurately position and securely install the tubular one-way trusses 3, ensuring that the trusses are fixed in position within the floor slab.

[0030] The bottom of the tubular one-way truss 3 is fixedly connected with multiple reinforcing steel pipes 4. The external parts of the multiple reinforcing steel pipes 4 are fixedly connected to the inside of the base plate 1. The middle part of the reinforcing steel pipes 4 passes through the inside of the mounting groove 2. The internal parts of the multiple reinforcing steel pipes 4 are fixedly connected with multiple reinforcing ribs 5. The external parts of the multiple reinforcing ribs 5 are fixedly connected to the inside of the base plate 1.

[0031] The tubular one-way truss 3 is the core load-bearing component of the floor slab. When bearing loads, it transfers the upper load to the reinforcing steel pipe 4 and the reinforcing rib 5. Its unique structural shape gives it excellent mechanical properties. During load transfer, it can effectively disperse stress. Together with the reinforcing steel pipe 4 and the reinforcing rib 5, they enhance the load-bearing capacity of the floor slab and prevent deformation due to uneven stress. The main function of the reinforcing rib 5 is to improve the tensile strength of the floor slab. When the floor slab is subjected to tensile force, the reinforcing rib 5 can withstand the tensile force and prevent cracking. Because it is tightly connected to the reinforcing steel pipe 4, the two work together to enhance the floor slab's resistance to different stress conditions and ensure the structural safety of the floor slab.

[0032] The bottom of the high-strength concrete narrow strip slab 6 is provided with multiple positioning grooves 8, and the top of the tubular one-way truss 3 is fixedly connected to the inside of the multiple positioning grooves 8 by welding. The inner wall of the positioning groove 8 is fixedly connected with a fixing steel pipe 7, and the bottom of the multiple fixing steel pipes 7 is fixedly connected to the top of the tubular one-way truss 3.

[0033] Support blocks 9 are fixedly connected to the inner walls of both sides of the mounting groove 2. The top inner walls of multiple support blocks 9 are in contact with the bottom outer wall of the tubular one-way truss 3. When the floor slab is under load, the support blocks 9 play an auxiliary supporting role, dispersing the pressure borne by the tubular one-way truss 3, reducing the situation of excessive local stress on the truss, enhancing the stability of the tubular one-way truss 3, and thus ensuring the stability of the entire floor slab structure.

[0034] During the stress process of the floor slab, the high-strength concrete narrow strip slab 6 and the tubular one-way truss 3 work together to share the load and enhance the bending resistance of the floor slab. At the same time, the concrete structure of the high-strength concrete narrow strip slab 6 itself can also improve the overall rigidity of the floor slab, so that the floor slab remains stable when bearing a large weight, improves its rigidity and strength, and is not prone to bending deformation.

[0035] The positioning groove 8 provides an installation position for the fixed steel pipe 7, ensuring the accurate positioning of the fixed steel pipe 7. One end of the fixed steel pipe 7 is fixed to the inner wall of the positioning groove 8, and the other end is connected to the top of the tubular one-way truss 3. This connection method enhances the connection strength between the high-strength concrete narrow strip plate 6 and the tubular one-way truss 3, enabling the two to work together better when under stress, and jointly bear and transfer the load.

[0036] Referring to Figures 1, 2 and 3, the base plate 1 is equipped with a protective component for protecting the floor slab. The protective component includes a base layer 10, which is made of high-strength reinforced concrete. The base layer 10 is made of high-strength reinforced concrete and is the main load-bearing part of the protective component. It has a strong load-bearing capacity and can withstand various loads transmitted from the upper part of the floor slab.

[0037] The base layer 10 is externally fixedly connected to the top side of the inner side of the base plate 1. The bottom side of the base layer 10 is fixedly connected to the thermal insulation layer 11, which is made of extruded polystyrene foam board. The thermal insulation layer 11 is located below the base layer 10. Its dense closed-cell structure can effectively prevent heat transfer and reduce the exchange of heat between indoors and outdoors. In winter, it can reduce the loss of indoor heat and in summer, it can block the outside heat from entering the room, thus achieving a good thermal insulation effect and reducing building energy consumption.

[0038] A waterproof and moisture-proof layer 12 is fixedly connected to the bottom side of the thermal insulation layer 11. The material of the waterproof and moisture-proof layer 12 is SBS modified bitumen waterproof membrane. The waterproof and moisture-proof layer 12 is located at the bottom of the floor slab. It is tightly attached to the bottom of the floor slab to form a solid waterproof barrier. It can effectively prevent water vapor in the ground or air from penetrating into the interior of the floor slab structure, and avoid water vapor causing corrosion and damage to the internal structure of the floor slab, such as steel bars, thereby extending the service life of the floor slab.

[0039] Working principle: When the floor slab is under load, the tubular one-way truss 3, as the main load-bearing component, transmits the force to the connected reinforcing steel pipe 4 and reinforcing rib 5. The reinforcing steel pipe 4, with its high strength, enhances the vertical load-bearing capacity of the floor slab, while the internal reinforcing rib 5 further improves the overall tensile performance, effectively preventing the floor slab from cracking under load. The support blocks 9 on both sides of the placement groove 2 provide stable support for the tubular one-way truss 3, dispersing the pressure it bears and ensuring structural stability. At the same time, the high-strength concrete narrow strip slab 6 is tightly connected to the tubular one-way truss 3 through the positioning groove 8 and the fixing steel pipe 7, sharing the load and enhancing the bending resistance of the floor slab, enabling the floor slab to withstand a large weight without deformation or damage.

[0040] The base layer 10 is made of high-strength reinforced concrete, serving as the main load-bearing structure. It not only possesses strong load-bearing capacity but also provides stable support for the underlying thermal insulation layer 11 and waterproof and moisture-proof layer 12. The thermal insulation layer 11 is composed of extruded polystyrene foam board, whose dense closed-cell structure effectively prevents heat transfer, reduces indoor and outdoor heat exchange, and achieves good thermal insulation effect, reducing building energy consumption. The bottom waterproof and moisture-proof layer 12 is made of SBS modified bitumen waterproof membrane. With its excellent waterproof performance, it adheres tightly to the bottom of the floor slab, forming a solid waterproof barrier to prevent moisture from the ground or air from penetrating into the floor slab structure, avoiding damage to the floor slab structure and thus extending the service life of the floor slab.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite floor slab with PH steel pipe web members, comprising a base slab (1) and a high-strength concrete narrow strip slab (6), characterized in that: The top of the base plate (1) is provided with multiple placement slots (2), and a tubular one-way truss (3) is installed inside the multiple placement slots (2). Multiple reinforcing steel pipes (4) are fixedly connected to the bottom of the tubular one-way truss (3), and multiple reinforcing ribs (5) are fixedly connected inside the multiple reinforcing steel pipes (4). The bottom of the high-strength concrete narrow strip plate (6) is provided with multiple positioning slots (8), and a fixing steel pipe (7) is fixedly connected to the inner wall of the positioning slot (8).

2. The composite floor slab with PH steel pipe web members according to claim 1, characterized in that: The exterior of multiple reinforcing steel pipes (4) is embedded in the interior of the base plate (1), the middle part of the reinforcing steel pipes (4) passes through the interior of the mounting groove (2), and the exterior of multiple reinforcing ribs (5) is fixedly connected to the interior of the base plate (1).

3. A composite floor slab with PH steel pipe web members according to claim 1, characterized in that: The inner walls of the left and right sides of the placement groove (2) are fixedly connected with support blocks (9), and the top inner walls of the multiple support blocks (9) are in contact with the bottom outer wall of the tubular one-way truss (3).

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