Steel tube truss prestressed concrete composite slab

Abstract

The utility model discloses steel pipe truss prestressed concrete composite slab, include: by steel pipe, web pole constitute's truss and by reinforced mesh and the concrete layer of wrapping reinforced mesh constitute's bottom plate, wherein reinforced mesh is by a plurality of longitudinal reinforcement and cross -section steel bar constitutes, web pole includes: along the fixed part of steel pipe length direction and set, and fixed part projects steel pipe both sides, and each fixed part is below steel pipe both sides and is provided with support frame, and the steel pipe is filled with mortar or concrete, steel pipe section is circular, square, triangle, oval one, the fixed part includes the main part in half cylinder shape, and the main part sets up below steel pipe, and the main part upper portion has to the flat plate of extending to steel pipe both sides, and the upper portion of support frame is fixed in the flat plate and the main part junction, the utility model discloses convenient processing, and the structure strength is high.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building materials, and in particular to prestressed concrete composite slabs with steel pipe trusses. Background Technology

[0002] There are many existing prefabricated floor slab technologies, commonly including reinforced steel truss composite slabs, prestressed reinforced steel truss composite slabs, ribbed composite slabs, SP slabs, and double-T slabs. Due to the assembly process, it is necessary to address both the overall integrity of the composite slab and the transportation and hoisting of prefabricated components. In practical applications, steel pipe trusses or reinforced steel trusses consume a large amount of steel and require extensive welding, resulting in high material and energy consumption. Material utilization is low, especially for existing technologies such as prestressed composite slabs with steel pipe web trusses.

[0003] Application No. CN202410199242.1 proposes a prestressed concrete composite slab with steel pipe truss. The slab is formed by passing through the longitudinal perforated steel bars of the upper chord through the continuously bent steel pipe web members to form a steel pipe web truss, which is then anchored to the concrete base slab and the concrete upper chord ribs to form a composite truss. This can achieve a thin base slab, large span and wide width, no cracking of components, simple manufacturing, and industrialized production of components, thus improving the efficiency of component production. However, the upper chord ribs are formed by concrete pouring, which requires the use of molds during the actual processing. Furthermore, the upper chord is formed by pouring concrete ribs on the outside of the short bars on a single row of grouted web members. Its structural strength and shear strength may not be sufficient to support the hoisting and transportation of large spans. Summary of the Invention

[0004] To ensure the strength of the composite slab and facilitate the fixing of the steel pipes and web members, this utility model proposes a steel pipe truss prestressed concrete composite slab, comprising: a truss composed of steel pipes and web members, and a base slab composed of a steel mesh and a concrete layer enclosing the steel mesh, wherein the steel mesh is composed of multiple longitudinal and transverse steel bars; the web members include: fixing members arranged along the length of the steel pipe, the fixing members extending to both sides of the steel pipe, and each fixing member having a support frame below both sides of the steel pipe, the steel pipe being filled with mortar or concrete; the steel pipe having a cross-section of one of circular, square, triangular, or elliptical; the fixing members comprising a semi-cylindrical main body, the main body being located below the steel pipe, the upper part of the main body having a flat plate extending to both sides of the steel pipe, and the upper part of the support frame being fixed at the junction of the flat plate and the main body.

[0005] Preferably, the support frame is triangular or trapezoidal.

[0006] Preferably, the longitudinal reinforcement is prestressed reinforcement.

[0007] Preferably, the web member is integrally formed.

[0008] Preferably, the fastener is a forging, and the support frame is formed by bending steel bars, and the two are fixed together by welding.

[0009] The prestressed concrete composite slab with steel pipe truss described in this utility model features a more robust and faster welding process between the steel pipes and web members due to the presence of fixing components. Subsequently, the load-bearing performance is further improved by pouring concrete. The support frame on both sides makes the overall bonding strength of the composite slab even higher. This utility model is easy to process and has high structural strength. Attached Figure Description

[0010] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a perspective view of the present utility model.

[0012] Figure 2 This is a front view of the present utility model.

[0013] Figure 3 This is a side view of the present invention.

[0014] In the diagram: 1. Steel pipe; 2. Support frame; 3. Fixture; 4. Horizontal reinforcement; 5. Longitudinal reinforcement; 6. Base plate; 7. Main body; 8. Flat plate. Detailed Implementation

[0015] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0016] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0019] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0020] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0021] Example 1, as Figures 1-3 As shown, the steel pipe truss prestressed concrete composite slab proposed in this utility model includes: a truss composed of steel pipes 1 and web members, and a base plate 6 composed of a steel mesh and a concrete layer enclosing the steel mesh. The steel mesh is composed of multiple longitudinal steel bars 5 and transverse steel bars 4, with some steel bars interlaced between the web members. The web members include: fixing members 3 arranged along the length of the steel pipe 1, the fixing members 3 extending out of both sides of the steel pipe 1, and each fixing member 3 is provided with a support frame 2 below both sides of the steel pipe 1. Concrete is poured into the steel pipe 1.

[0022] More specifically, the support frame 2 is trapezoidal, providing more stable support.

[0023] More specifically, the fixing member 3 includes a semi-cylindrical main body 7 with the inner wall of the main body 7 facing upward. The main body 7 is located below the steel pipe 1. The upper part of the main body 7 has a flat plate 8 extending to both sides of the steel pipe 1, which can increase the connection area of ​​the support frame 2. The upper part of the support frame 2 is fixed at the junction of the flat plate 8 and the main body 7.

[0024] More specifically, the longitudinal steel bar 5 is a prestressed steel bar.

[0025] More specifically, the lower part of the main body 7 has through holes on both sides, and the steel pipe 1 has through holes along its length that match the through holes on the main body 7. The fastener 3 and the steel pipe 1 are fixed by rivets 9 passing through the through holes of both, and are anchored after grouting and hardening.

[0026] More specifically, the web member is integrally die-cast and sintered using powder metallurgy.

[0027] The prestressed concrete composite slab with steel pipe truss described in this utility model features a more robust and faster welding process between the steel pipes and web members due to the presence of fixing components. Subsequently, the load-bearing performance is further improved by pouring concrete. The support frame on both sides makes the overall bonding strength of the composite slab even higher. This utility model is easy to process and has high structural strength.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prestressed concrete composite slab with a steel pipe truss frame, characterized in that: include: The truss consists of steel pipes and web members, and a base plate consists of a steel mesh and a concrete layer enclosing the steel mesh, wherein the steel mesh is composed of multiple longitudinal and transverse reinforcing bars; the web members include: fasteners arranged along the length of the steel pipe, the fasteners extending to both sides of the steel pipe, and each fastener having a support frame below both sides of the steel pipe; the steel pipe is filled with mortar or concrete; the cross-section of the steel pipe is one of circular, square, triangular, or elliptical; the fasteners include a semi-cylindrical main body, which is located below the steel pipe, and a flat plate extending to both sides of the main body; the upper part of the support frame is fixed at the junction of the flat plate and the main body.

2. The prestressed concrete composite slab with steel pipe truss according to claim 1, characterized in that: The support frame is triangular or trapezoidal.

3. The prestressed concrete composite slab with steel pipe truss according to claim 2, characterized in that: The longitudinal reinforcing bars are prestressed reinforcing bars.

4. The prestressed concrete composite slab with steel pipe truss according to claim 3, characterized in that: The web member is integrally formed.

5. The prestressed concrete composite slab with steel pipe truss according to claim 4, characterized in that: The fastener is a forging, and the support frame is formed by bending steel bars; the two are fixed together by welding.

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