CN219343767U

CN219343767U - Composite structural beam and composite structural floor slab

Info

Publication number: CN219343767U
Application number: CN202223419763.9U
Authority: CN
Inventors: 彭礼; 郝坤超; 蒋东
Original assignee: Shanghai T&d Architectural Science And Technology Co ltd
Current assignee: Shanghai T&d Architectural Science And Technology Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-07-14
Anticipated expiration: 2032-12-20

Abstract

The utility model provides a combined structural beam and a combined structural floor slab, wherein two ends of the combined structural beam are solid beam sections, the middle is a hollow section, and for a continuous beam or a frame beam, the solid beam section 1 is pressed by a lower chord and the upper chord 21 is pulled, and the hollow section is pulled by the lower chord and the upper chord 21 is pulled. In this way, the compression areas of the combined structural beams are all made of concrete, so that the cost is low, the efficiency is high, the hollow in the middle is convenient for penetrating pipelines, and the weight of the precast beams is greatly reduced.

Description

Composite structural beam and composite structural floor slab

Technical Field

The utility model relates to the field of assembled buildings, in particular to a combined structural beam and a combined structural floor slab.

Background

The steel beam used for connecting the steel frame structure and the upright post at present has large steel consumption and high manufacturing cost, prevents the popularization of the steel structure, and the weight of the beam prefabricated part used for prefabricating the concrete structure is too large, the hoisting is difficult, and the manufacturing cost is high.

Disclosure of Invention

One purpose of the utility model is to save steel consumption and facilitate assembly type installation;

the utility model also aims to provide an assembled structure, which is convenient for installing pipelines in subsequent decoration and saves the whole floor height space.

In order to achieve any of the above objects, the present utility model provides a composite structural beam, which is characterized by comprising a truss beam body and two solid beam sections, wherein the two solid beam sections are respectively formed by casting a section of solid concrete at two ends of the truss beam body.

In a preferred embodiment of the utility model, the truss girder body comprises an upper chord, a lower chord and a middle web member; the middle web member is arranged between the upper chord and the lower chord in a wave shape.

In a preferred embodiment of the present utility model, the middle web member is a steel tube, and the peaks and the troughs of the middle web member are flat, wherein the peaks are connected to the upper chord, and the troughs are connected to the lower chord.

In a preferred embodiment of the present utility model, the upper chord is an upper chord member, and the peak of the middle web member is fixedly connected to the upper chord member.

In a preferred embodiment of the utility model, the upper chord is an upper chord concrete rib, and the wave crest of the middle web member is buried and fixed on the upper chord concrete rib.

In the preferred embodiment of the utility model, the lower chord is a lower chord concrete plate, and the trough of the middle web member is buried and fixed in the lower chord concrete plate.

In a preferred embodiment of the utility model, the lower chord is a lower chord concrete pole, and the trough of the middle web member is fixed on the lower chord concrete pole.

In a preferred embodiment of the utility model, the lower chord is connected between the two solid beam sections.

In a preferred embodiment of the present utility model, the portion between the two solid and beam sections of the truss beam body is a hollow section.

The utility model also provides a composite structure floor slab which is characterized by at least comprising a disassembly-free base plate, a pouring layer and a composite structure beam, wherein the middle web member of the composite structure beam is provided with a supporting plate, the disassembly-free base plate is arranged on the supporting plate, the pouring layer is poured on the disassembly-free base plate, and the upper chord and the wave crest of the middle web member are positioned in the pouring layer.

The beneficial effects of the utility model are as follows:

as the web members are hollow steel pipes, the rigidity of the hollow web members is greatly increased relative to the external rigidity of the steel bar surface, so that the hollow web members are only required to be plane trusses, and truss processing cost and truss web member material cost can be greatly saved compared with the traditional triangle web member trusses.

The traditional beam does not adopt a steel pipe web member, and the truss form is also the first application.

The hollow tube of the web member is flattened at the peaks and the valleys. The flattening has the advantages that the flattened thickness of the steel pipe is only 1-3 mm, so that the steel pipe is convenient to connect with the upper chord, can be buried in concrete, can reduce the thickness of the concrete, reduce the weight of a prefabricated layer, or increase the effective chemical height of the truss.

The trough flattening is beneficial to improving the engagement area of the hollow web member and the lower chord concrete plate, the top of the hollow web member is flattened to form a flattened structure, the problem that the intersection point of the web member of the conventional steel bar truss is eccentric with the upper chord can be avoided, and the secondary bending moment is reduced; the steel pipe has a thicker section, which is beneficial to increasing the shearing resistance of the framework and the concrete.

The two ends of the combined structural beam are solid beam sections, the middle is a hollow section, for the continuous beam, the mechanical action of the solid beam sections is that the lower chord is pressed and the upper chord is pulled, and the mechanical action of the hollow section is that the lower chord is pulled and the upper chord is pulled, so that the two ends of the combined structural beam form a hogging moment, concrete is pressed, the hollow section spans the middle positive bending moment, the upper chord concrete rib or the upper chord is pressed, and the mechanical cost performance can be greatly increased by using the concrete compression relatively beneficial to the steel compression.

Drawings

Fig. 1 shows a perspective view of a composite structural beam.

Fig. 2 shows a connecting structure diagram of the central solid beam section and the lower chord concrete slab of the composite structural beam.

Fig. 3 shows a structural view of the truss girder of the composite structural girder.

Fig. 4 shows a plan view of a composite structural floor slab.

Fig. 5 shows a bending moment diagram of a composite structure floor slab.

FIG. 6 shows a cross-section of A-A in FIG. 4.

Fig. 7 shows a further structural representation of the structure of fig. 6.

Fig. 8 shows the skeleton diagrams of fig. 6 and 7.

Detailed Description

The following description is presented to enable one skilled in the art to make and use the utility model and to incorporate it into the context of a particular application. Various modifications, as well as various uses in different applications will be readily apparent to persons skilled in the art, and the generic principles defined herein may be applied to a wide range of embodiments. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the following detailed description, numerous specific details are set forth in order to provide a more thorough understanding of the utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without limitation to these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the present utility model.

The reader is directed to all documents and documents filed concurrently with this specification and open to public inspection with this specification, and the contents of all such documents and documents are incorporated herein by reference. All the features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic set of equivalent or similar features.

Note that where used, the designations left, right, front, back, top, bottom, forward, reverse, clockwise, and counterclockwise are used for convenience only and do not imply any particular orientation of securement. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Note that, where used, further, preferably, further and more preferably, the brief description of another embodiment is made on the basis of the foregoing embodiment, and further, preferably, further or more preferably, the combination of the contents of the rear band with the foregoing embodiment is made as a complete construction of another embodiment. A further embodiment is composed of several further, preferably, still further or preferably arrangements of the strips after the same embodiment, which may be combined arbitrarily.

The utility model is described in detail below with reference to the drawings and the specific embodiments. It is noted that the aspects described below in connection with the drawings and the specific embodiments are merely exemplary and should not be construed as limiting the scope of the utility model in any way.

Example 1:

referring to fig. 1, 2 and 3, the present embodiment provides a composite structural beam comprising a truss beam body 2 and two solid beam sections 1; or, each composite structural beam comprises a truss frame body and two solid beam sections 1,

as shown in fig. 1, two solid beam sections 1 are respectively formed by casting a section of solid concrete at two ends of a truss girder body 2, specifically, the solid beam section 1 is preferably in a right trapezoid shape, two bevel edges are opposite, and the right angle edges are used as two ends of the combined structural girder. The two ends of the truss girder body 2 are buried between the two solid girder sections 1.

The hollow section is arranged between the two solid beam sections 1, the hollow design is adopted in the midspan, pipelines can be penetrated, and when the combined structural beam is used as a floor structural beam, the hollow design greatly saves the floor height.

Wherein the truss girder body 2 comprises an upper chord 21, a lower chord and a middle web member 22. The intermediate web member 22 is provided between the upper chord 21 and the lower chord in a wave shape. The truss girder body 2 may be a conventional triangular double-row truss, but in the process of implementing the present embodiment, the single-row truss girder body 2 can meet the strength requirement when acting as a structural girder.

As a preferred embodiment of the present embodiment, the middle web member 22 is a steel tube, the peaks and the valleys of the middle web member 22 are flat, the peaks are connected to the upper chord 21, and the valleys are connected to the lower chord. The flat wave crests and wave troughs are obtained by flattening the steel pipes.

Because the web member 22 adopts the hollow steel pipe, the rigidity of the hollow web member 22 is greatly increased relative to the steel bar surface, so that the hollow web member 22 adopts a plane truss, and the truss processing cost and the truss web member 22 material cost can be greatly saved compared with the traditional triangle web member 22 truss. The hollow tube of web member 22 is flattened at the peaks and valleys. The flattening has the advantages that the flattened thickness of the steel pipe is only 1-2 mm, so that the steel pipe is convenient to connect with the upper chord 21, can be buried in concrete, can reduce the thickness of the concrete, reduce the weight of a prefabricated layer, or increase the effective chemical height of a truss. The flattening of the valleys facilitates increasing the area of engagement of the hollow web member 22 with the concrete floor. The top of the hollow web member 22 is flattened to form a flattened structure, so that the problem that the intersection point of the conventional steel bar truss web member 22 and the upper chord 21 are eccentric can be avoided, and the secondary bending moment is reduced; the steel pipe has a thicker section, which is beneficial to increasing the shearing resistance of the framework and the concrete.

There are several embodiments of the upper chord 21, one is that the upper chord 21 is an upper chord 21 rod, and the peak of the middle web member 22 is fixedly connected to the upper chord 21 rod, and the two are fixed by welding.

The other is that the upper chord 21 is an upper chord concrete rib, and the wave crest of the middle web member 22 is buried and fixed on the upper chord concrete rib. The upper chord concrete rib is the concrete rib, and after the wave crest is flattened, the wave crest can be better meshed with the rib, and the thickness requirement on the upper chord concrete rib is lower.

In addition, the upper chord 21 can also be made of steel pipes, trapezoidal steel, C-shaped steel and the like.

In this embodiment, the lower chord is a lower chord concrete slab 23, and the trough of the middle web member 22 is buried and fixed in the lower chord concrete slab 23. And as shown in fig. 2, the lower chord concrete slab 23 is connected between the two solid beam sections 1 to form a unitary structure. In the concrete implementation process, when the combined structural beam is prefabricated in a factory, the lower chord concrete slab 23 and the solid beam section 1 are integrally cast.

Or, the lower chord is a lower chord member, and the trough of the middle web member is fixed on the lower chord member. Preferably, the lower chord member is preferably a lower chord steel pipe or a lower chord metal rod, and the trough of the middle web member is welded on the lower chord member after flattening treatment.

Referring to fig. 5, the composite structural beam is a continuous beam in which the solid beam section 1 is pressed by the lower chord and the upper chord 21 is pulled, and the hollow section is pulled by the lower chord and the upper chord 21 is pulled. In this way, the two ends of the combined structural beam form a hogging moment, and the hollow section is subjected to a positive bending moment in the midspan, so that the upper chord 21 is pressed, and the material is saved.

The beneficial effects of the utility model are as follows:

Example 2:

the embodiment provides a composite structure floor slab, which at least comprises a disassembly-free bottom plate 6 (or a prefabricated layer of a laminated slab), a pouring layer 7 and a composite structure beam. Wherein, be equipped with layer board 5 on the middle web member 22 of integrated configuration roof beam, exempt from to tear open bottom plate 6 and locate on layer board 5, exempt from to tear open and be equipped with the floor component on the bottom plate 6, pour layer 7 pour in exempt from to tear open the floor component on bottom plate 6, the crest of the last chord 21 of integrated configuration roof beam and middle web member 22 is located and pours layer 7.

Wherein the floor elements are steel reinforcement layers of the floor, which are preferably steel tube trusses, there is shown in fig. 6 and 7 an upper chord 8 of the steel tube truss to indicate its position, the remainder not being shown. The placement of the steel pipe trusses in the floor slab casting layer 7 is a necessary means for casting the floor slab, and although a concrete illustration of the steel pipe web members of the steel pipe trusses is not given here, it should be clear to a person skilled in the art from the description.

Wherein the disassembly-free floor 6 is in this embodiment explained as a structural component of a plurality of floors, comprising a bottom prefabricated layer of superimposed sheets, which prefabricated layer is a precast concrete slab, the superimposed sheets forming superimposed sheets after casting concrete on the prefabricated layers; or the disassembly-free bottom die is used as a bottom die template for pouring the structural storey, and is directly used as a part of the structure of the storey after pouring, and the die is not disassembled.

Referring to fig. 4 to 8, fig. 4 is a schematic elevation view of a floor slab with a combined structure, wherein main building structures are arranged on two sides of the floor slab, and the main building structures can be upright posts 3 or walls of a building.

In fig. 3, the web member 22 is provided with a pallet 5, and the purpose of this is to facilitate the installation of the disassembly-free base plate 6, and the disassembly-free base plate 6 rests on the pallet 5. Specifically, each layer of structural floor slab is provided with a plurality of combined structural beams, and the disassembly-free bottom plate 6 is placed on the supporting plates 5 of the combined structural beams. Meanwhile, the supporting plate 5 also has the function of preventing slurry leakage between the disassembly-free bottom plates 6. Because the disassembly-free bottom plates 6 are arranged on the two sides of the combined structural beam, the combined structural beam can be placed on the supporting plate 5 to prevent leakage between the disassembly-free bottom plates 6 when the pouring layer 7 is poured.

Further, a temporary support 4 can be arranged at the bottom of the supporting plate 5 during pouring, and the pouring layer 7 can be removed after being completely solidified. The temporary supports 4 are respectively located at two sides of the web member 22 and are arranged on the lower chord concrete slab 23, and can flow out of a pouring space 41 as shown in fig. 6, so that the slurry of the pouring layer 7 is poured in the pouring space 41 to protect the web member 22. As shown in fig. 7, the web member 22 may be closely adhered.

The beneficial effects of the utility model are as follows:

Further, while the utility model has been described in detail with reference to the embodiments thereof, those skilled in the art will appreciate that various modifications can be made to the utility model in light of the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the utility model, which is defined by the appended claims.

Claims

1. The combined structure beam is characterized by comprising a truss beam body and two solid beam sections, wherein the two solid beam sections are respectively formed by casting a section of solid concrete at two ends of the truss beam body; the truss girder body comprises an upper chord, a lower chord and a middle web member; the middle web member is arranged between the upper chord and the lower chord in a wave shape; the middle web member is a steel tube.

2. The composite structural beam of claim 1, wherein: the peaks and the troughs of the middle web members are flat, the peaks are connected with the upper chord, and the troughs are connected with the lower chord.

3. The composite structural beam of claim 2, wherein: the upper chord is an upper chord member, and the wave crest of the middle web member is fixedly connected with the upper chord member.

4. The composite structural beam of claim 2, wherein: the upper chord is an upper chord concrete rib, and the wave crest of the middle web member is buried and fixed on the upper chord concrete rib.

5. The composite structural beam of claim 2, wherein: the lower chord is a lower chord concrete plate, and the trough of the middle web member is buried and fixed in the lower chord concrete plate.

6. The composite structural beam of claim 2, wherein: the lower chord is a lower chord member, and the trough of the middle web member is fixed on the lower chord member.

7. The composite structural beam of claim 5 or 6, wherein: the lower chord is connected between the two solid bridge sections.

8. The composite structural beam of claim 1, wherein: and a part between the two solid and non-rigid girder sections of the truss girder body is a hollow section.

9. The composite structure floor slab is characterized by at least comprising a disassembly-free bottom plate, a pouring layer and the composite structure beam according to any one of claims 2-7, wherein a supporting plate is arranged on the middle web member of the composite structure beam, the disassembly-free bottom plate is arranged on the supporting plate, the pouring layer is poured on the disassembly-free bottom plate, and the upper chord and the wave crest of the middle web member are positioned in the pouring layer.