Steel tube web truss prestressed concrete composite slab

Abstract

The utility model discloses a steel pipe web truss prestressed concrete composite slab, include: by upper chord rib, web truss is constituted and by the concrete layer of steel bar net and the bottom plate of wrapping steel bar net are constituted, wherein steel bar net is constituted by multiple longitudinal reinforcement and horizontal reinforcement, web trusses are bent and are formed by whole steel pipe, and present wavy, and web truss includes multiple interval setting inclined pole and straight pole, wherein straight pole is at the wave crest or wave trough section, and straight pole still is equipped with the short muscle of horizontal setting, upper chord rib includes channel steel, and channel steel both sides are equipped with the Z shape's through groove of short muscle entry, and short muscle sets up in the through groove top, and the concrete layer of channel steel inboard will short muscle middle section and web truss upper part seal in channel steel inboard, and 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 web 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 web members. The steel pipe web members are formed by passing through the longitudinal perforated steel bars of the upper chord through the continuously bent steel pipe web members, and anchored to the concrete base slab and the concrete upper chord rib to form a composite truss. It can achieve thin base slab, large span and wide width, no cracking of components, simple manufacturing, realize industrial production of components and improve component production efficiency. However, its upper chord rib is formed by concrete pouring, which requires the use of molds in the specific processing, and its structural strength is also insufficient. Summary of the Invention

[0004] To facilitate the fixing of the top chord ribs and web members of the truss, this utility model proposes a prestressed concrete composite slab with steel pipe web members, comprising: a truss composed of top chord ribs 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 are formed by bending a whole steel pipe in a wavy shape, and the web members include multiple spaced diagonal bars and straight bars, wherein the straight bars are located at the crests or troughs of the waves, and the straight bars are also provided with transversely arranged short bars; the top chord ribs include channel steel, and the channel steel has Z-shaped through slots on both sides for the short bars to enter, the short bars are set at the top of the through slots, and the concrete layer inside the channel steel seals the middle section of the short bars and the upper part of the web members inside the channel steel.

[0005] Preferably, the web members are filled with mortar.

[0006] Preferably, the upper chord rib is provided with longitudinal reinforcing bars.

[0007] Preferably, the upper chord rib and the steel bars in the bottom plate are all prestressed steel bars.

[0008] Preferably, the width of the through groove is equal to the diameter of the short rib.

[0009] Preferably, the length of the short rib is greater than the width of the channel steel.

[0010] Preferably, the angle between the inclined rod and the straight rod is 120°-150°.

[0011] The steel pipe web truss prestressed concrete composite slab of this utility model is manufactured by first inverting the channel steel with Z-shaped through slots, then inserting all the short bars of the web members into the Z-shaped through slots, and then pouring a concrete layer into the channel steel to complete the truss manufacturing. Finally, the lower part of the web members is anchored into the concrete base plate to form the truss. This utility model is easy to manufacture and has high structural strength. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a perspective view of the present utility model.

[0014] Figure 2 This is a top view of the present invention.

[0015] Figure 3 This is a front view of the present utility model.

[0016] Figure 4 This is a 3D view of the truss.

[0017] Figure 5 This is a front view of the truss.

[0018] In the diagram: 1. Channel steel; 2. Web member; 3. Through channel; 4. Concrete layer; 5. Base plate; 6. Reinforcing mesh; 7. Short reinforcement; 8. Straight bar. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] Example 1, as Figures 1-5 As shown, the prestressed concrete composite slab with steel pipe web truss proposed in this utility model includes: a truss composed of an upper chord rib and web members 2, and a base plate 5 composed of a steel mesh 6 and a concrete layer enclosing the steel mesh 6, wherein the steel mesh 6 is composed of multiple longitudinal and transverse steel bars; the web members 2 are formed by bending a whole steel pipe, which is wavy, and the web members 2 include multiple diagonal bars and straight bars 8 arranged at intervals, wherein the straight bars 8 are located at the crests or troughs of the waves, and the straight bars 8 are also provided with transversely arranged short bars 7; the upper chord rib includes a channel steel 1, and the channel steel 1 has Z-shaped through slots 3 on both sides for the short bars 7 to enter, the short bars 7 are set at the top of the through slots 3, and the concrete layer 4 inside the channel steel 1 seals the middle section of the short bars 7 and the upper part of the web members 2 inside the channel steel 1.

[0026] As a more specific implementation plan, the web member 2 is filled with mortar.

[0027] As a more specific implementation, the upper chord rib is provided with longitudinal reinforcing bars.

[0028] As a more specific implementation plan, the steel bars in the upper chord rib and the bottom plate 5 are all prestressed steel bars.

[0029] As a more specific implementation, the width of the through groove 3 is equal to the diameter of the short rib 7.

[0030] As a more specific implementation, the length of the short rib 7 is greater than the width of the channel steel 1.

[0031] As a more specific implementation, the angle between the inclined rod and the straight rod 8 is 120°-150°.

[0032] The steel pipe web truss prestressed concrete composite slab of this utility model is manufactured by first inverting the channel steel with Z-shaped through slots, then inserting all the short bars of the web members into the Z-shaped through slots, and then pouring a concrete layer into the channel steel to complete the truss manufacturing. Finally, the lower part of the web members is anchored into the concrete base plate to form the truss. This utility model is easy to manufacture and has high structural strength.

[0033] 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. Steel tube web truss prestressed concrete composite slab, characterized in that: include: The truss consists of an upper chord rib and web members, and a base slab consists of a steel mesh and a concrete layer enclosing the steel mesh. The steel mesh is composed of multiple longitudinal and transverse steel bars. The web members are formed by bending a single steel pipe into a wave shape. The web members include multiple spaced diagonal and straight members, with the straight members located at the crests or troughs of the waves. The straight members are also provided with transversely arranged short bars. The upper chord rib includes a channel steel with Z-shaped through slots on both sides for the short bars to enter. The short bars are located at the top of the through slots. The concrete layer inside the channel steel seals the middle section of the short bars and the upper part of the web members inside the channel steel.

2. The steel tube truss girder prestressed concrete composite slab according to claim 1, characterized in that: The web members are filled with mortar.

3. The steel tube truss girder prestressed concrete composite slab according to claim 2, characterized in that: The upper chord rib is provided with longitudinal reinforcing bars.

4. The steel tube truss girder prestressed concrete composite slab according to claim 3, characterized in that: The steel bars in the upper chord rib and the bottom plate are all prestressed steel bars.

5. The steel tube truss girder prestressed concrete composite slab according to claim 4, characterized in that: The width of the through groove is equal to the diameter of the short rib.

6. The steel tube truss girder prestressed concrete composite slab according to claim 5, characterized in that: The length of the short rib is greater than the width of the channel steel.

7. The steel tube truss prefabricated concrete composite slab according to claim 6, characterized in that: The angle between the diagonal bar and the straight bar is 120°-150°.

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