CN202164740U - Steel-concrete composite truss beam - Google Patents

Abstract

The utility model provides a steel-concrete composite truss beam, which belongs to the technical field of construction. It solves the problem that the existing composite beam has no reserved pipe fittings and line installation positions. The steel-concrete composite truss beam includes a steel truss beam and a concrete slab, the concrete slab and the steel truss beam are fixed together, and the steel truss beam includes a strip-shaped upper flange, a lower flange and several web members, and the web members The two ends are fixedly connected with the upper flange and the lower flange respectively, several web bars form several hollow abdominal cavities with the upper flange and the lower flange, and the upper flange is connected with the concrete slab through several studs. The composite truss beam of the utility model is provided with an abdominal cavity, which facilitates the installation of various pipelines, and also has many advantages such as light structure weight, simple form, large bearing capacity and rigidity, and steel saving.

Description

A steel-concrete composite truss beam

technical field

The utility model belongs to the technical field of buildings and relates to beams on buildings, in particular to a steel-concrete composite truss beam used in combination with trusses and concrete. the

Background technique

Steel beams and concrete slabs are connected to form a bending member that works together as a whole, called steel-concrete composite beams. Steel-concrete composite beams are a new type of structure developed on the basis of steel structures and concrete structures. A shear connector is set between the steel beam and the concrete flange plate to resist the lifting and relative sliding of the two at the interface, making them work together as a whole. For example: a combined corrugated web beam disclosed in a Chinese patent [Chinese patent number: 200920207779.9; authorized announcement number: CN201474165U], which is composed of upper flange, web, lower flange, reinforced concrete flange and profiled steel plate connection , characterized in that the upper flange is parallel to the lower flange, the web is perpendicular to the upper flange and the lower flange, the cross section of the web is trapezoidal or sinusoidal corrugated, and the inclination angle of the inclined section of the trapezoidal corrugation is 0-90°, The reinforced concrete wing plate is located above the profiled steel plate, and the profiled steel plate is located above the upper flange. The reinforced concrete wing plate, profiled steel plate, and upper flange are fixed by bolts, and the transverse steel bars are welded to the upper part of the profiled steel plate. the

The above-mentioned combined corrugated web beam can give full play to the tensile performance of steel and the compressive performance of concrete, but because the web of this structure is a solid structure, pipe fittings, wires, etc. The installation of pipe fittings and lines brings unnecessary troubles and affects the aesthetics of the interior. the

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a steel-concrete composite truss beam with light structure weight, large bearing capacity and rigidity, and convenient construction.

The purpose of this utility model can be achieved through the following technical solutions: a steel-concrete composite truss beam, including a steel truss beam and a concrete slab, the concrete slab and the steel truss beam are fixed together, it is characterized in that the The steel truss girder includes a strip-shaped upper flange, a lower flange and several web members, the two ends of the web members are respectively fixedly connected with the upper flange and the lower The flange and the lower flange form several hollow abdominal cavities, and the upper flange is connected with the concrete slab through several studs. the

The upper flange of the steel-concrete composite truss beam of the utility model forms a fixed connection with the concrete slab through welding studs, so that the steel truss and the concrete slab can work together. Several web bars form several hollow abdominal cavities with the upper flange and the lower flange, and these hollow abdominal cavities reserve installation space for the arrangement of pipe fittings and lines. the

In the above-mentioned steel-concrete composite truss beam, the ends of the studs are provided with nail heads, the studs are poured into the concrete slab, and the other ends of the studs are welded on the upper flange . The nail head is poured into the concrete slab to prevent the concrete from lifting, strengthen the combination of the steel and the concrete slab, and transmit the shear force through the stud to coordinate the stress and deformation of the two so that they can bear the force together. the

In the above-mentioned steel-concrete composite truss beam, the plurality of web members are arranged on the same plane, and the two ends of the web members are connected with the upper flange and the lower flange to form several triangular abdominal cavity. The abdominal cavity is set to facilitate the setting of various pipelines and improve the utilization rate of the indoor space. the

As the second case, in the above-mentioned steel-concrete composite truss girder, several web groups are arranged in the axial direction between the upper flange and the lower flange, and between each two web groups A quadrilateral abdominal cavity is formed; the set of webs includes two webs, one end of the two webs is affixed to the lower flange to form a fixed point, and the other ends of the two webs are respectively connected to the upper flange , after the two web bars are connected with the upper flange and the lower flange, an inverted triangular abdominal cavity is formed in the radial direction. This structure facilitates the arrangement of various pipelines in two directions and improves the utilization rate of the indoor space. the

As the third case, in the above-mentioned steel-concrete composite truss girder, several web groups are arranged in the axial direction between the upper flange and the lower flange, and between each two web groups A quadrilateral abdominal cavity is formed; the lower flange includes two steel pipes arranged in parallel, the web bar set includes two web bars, and one end of the two web bars is affixed to the upper flange to form a fixed point , the other ends of the two webs are respectively connected with two steel pipes. After the two webs are connected with the upper flange and the two steel pipes, the line connecting the connection points forms a triangle along the radial direction. the

As the fourth case, in the above-mentioned steel-concrete composite truss girder, several web groups are arranged in the axial direction between the upper flange and the lower flange, and between each two web groups A quadrilateral abdominal cavity is formed; the lower flange includes two steel pipes arranged in parallel, and the web bar set includes two web bars, one end of the two web bars is separately connected to the upper flange, and the two web bars The other ends of the webs are respectively connected with two steel pipes. One end of the two webs is connected to the upper flange, but the connection points between the two webs and the upper flange are set separately, and the other ends of the two webs are respectively connected to two steel pipes, and the four connection points are connected to form a a quadrilateral. the

The shape of the abdominal cavity formed by connecting the web bar with the upper flange and the lower flange can be set according to the actual reserved space. the

Compared with the prior art, the steel-concrete composite truss beam of the present invention has the following advantages:

1. Composite truss beam has many advantages such as light structure weight, simple form, large bearing capacity and rigidity, and steel saving;

2. Set the steel girder into a truss structure welded by upper flange, lower flange and web, which facilitates the installation of various pipelines and improves the utilization rate of indoor space;

3. With the composite beam of this structure, the suspended ceiling and suspended load can directly act on the lower flange during interior decoration, saving the structure of the suspended ceiling keel and suspension beam. the

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model. the

Fig. 2 is the front view of the utility model. the

Fig. 3 is a side view of the utility model. the

Fig. 4 is a schematic structural view of Embodiment 2 of the present utility model. the

Fig. 5 is a schematic structural view of Embodiment 3 of the present utility model. the

Fig. 6 is a schematic structural view of Embodiment 4 of the present utility model. the

In the figure, 1. Steel truss beam; 2. Concrete slab; 3. Upper flange; 4. Lower flange; 5. Web member; 6. Stud; 7. Nail head. the

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments. the

Example 1

As shown in Figure 1, Figure 2 and Figure 3, the steel-concrete composite truss beam of the present invention includes a steel truss beam 1, a concrete slab 2 and several studs 6, and the steel truss girder 1 and the concrete slab 2 pass through the studs 6 connect. the

The steel truss girder 1 includes an upper flange 3 , a lower flange 4 and several web members 5 . The upper flange 3 can be a steel plate with a certain thickness, and square steel can also be selected. The lower flange 4 can be a kind of steel plate, square steel or round steel. Both the upper flange 3 and the lower flange 4 are arranged transversely, one end of the web bar 5 is welded on the lower surface of the upper flange 3, and the other end is welded on the lower flange 4, and several web bars 5 are arranged on the same plane, and several After the root web rod 5 is welded with the upper flange 3 and the lower flange 4, several hollow triangular abdominal cavities are formed in the axial direction, and these hollow abdominal cavities reserve installation space for the arrangement of pipe fittings and lines. the

One end of several cylindrical studs 6 is welded on the upper surface of the upper flange 3 and fixedly connected with the upper flange 3, and the other end of the studs 6 is provided with a nail head 7, and the diameter of the nail head 7 is larger than that of the stud 6. The diameter of the rod. After the stud 6 is connected to the upper flange 3, the whole stud 6 is poured into the concrete, and after the concrete is consolidated, the concrete slab 2 and the steel truss beam 1 are formed to work together. The nail heads 7 of the studs 6 are directly buried in the concrete slab 2, which can prevent the concrete slab 2 from being lifted. the

When the steel-concrete composite truss beam of the present utility model is adopted, the pipeline and the line can be directly penetrated into the abdominal cavity, and the suspended ceiling and the hanging load can be directly acted on the lower flange 4 during decoration. Such a composite beam makes The interior space is simpler and the utilization rate of the interior space is improved. the

Example 2

As shown in Figure 4, the structure and function of this embodiment are similar to those of Embodiment 1, wherein several web groups are arranged axially between the upper flange 3 and the lower flange 4 of this embodiment, and every two webs A quadrilateral abdominal cavity is formed between the groups; each web bar group in this embodiment includes two web bars 5, and one end of the two web bars 5 is welded on the lower flange 4 at the same time to form a fixed point, and the two web bars The other ends of 5 are respectively welded on the upper flange 3, the connection points of the two webs 5 and the upper flange 3 are set separately, and the two webs 5 are connected with the upper flange 3 and the lower flange 4 to form radially An inverted triangular abdominal cavity. This structure facilitates the arrangement of various pipelines in two directions and improves the utilization rate of the indoor space. the

Example 3

As shown in Figure 5, the structure and function of this embodiment are similar to those of Embodiment 1, wherein a number of 5 sets of webs are arranged axially between the upper flange 3 and the lower flange 4 of this embodiment, and every two webs A quadrilateral abdominal cavity is formed between the 5 groups of rods; the lower flange 4 of this embodiment includes two steel pipes arranged in parallel; the web rod group includes two web rods 5, and one end of the two web rods 5 is welded on A fastening point is formed on the upper flange 3, and the other ends of the two web bars 5 are respectively welded on two steel pipes. After the two web bars 5 are connected with the upper flange 3 and the two steel pipes, the connecting lines of the connecting points form a triangle along the radial direction. the

Example 4

As shown in Figure 6, the structure and function of this embodiment are similar to those of Embodiment 1, wherein several web groups are arranged axially between the upper flange 3 and the lower flange 4 of this embodiment, and every two webs A quadrilateral abdominal cavity is formed between the groups; the lower flange 4 of the present embodiment includes two parallel steel pipes, and each web group includes two webs 5, and one end of the two webs 5 is separately connected to the upper wing On the edge 3, the other ends of the two web bars 5 are respectively connected with two steel pipes. One ends of the two webs 5 are connected to the upper flange 3, but the connection points of the two webs 5 and the upper flange 3 are set separately, and the other ends of the two webs 5 are respectively connected to two steel pipes. The connection points are connected to form a quadrilateral. the

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range. the

Although the terms steel truss girder 1, concrete slab 2, upper flange 3, lower flange 4, web member 5, stud 6, nail head 7 etc. are frequently used in this paper, the possibility of using other terms is not excluded . These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model. the

Claims (7)

1. a composite truss beam of steel-concrete, comprising steel truss beam (1) and concrete slab (2), described concrete slab (2) is affixed together with steel truss beam (1), is characterized in that, The steel truss girder (1) includes an upper flange (3), a lower flange (4) and several web members (5), and the two ends of the web members (5) are connected to the upper flange (3) respectively. ) and the lower flange (4) are fixedly connected, and some of the described web rods (5) form some hollow abdominal cavities with the upper flange (3) and the lower flange (4), and the described upper flange (3) It is connected with the concrete slab (2) through several studs (6). 2. The steel-concrete composite truss beam according to claim 1, characterized in that, said studs (6) are poured in the concrete slab (2), and one end thereof is welded to the upper flange (3) superior. 3. The steel-concrete composite truss beam according to claim 2, characterized in that, the ends of the studs (6) are provided with nail heads (7), and the nail heads (7) are poured on Inside the concrete slab (2). 4. The steel-concrete composite truss beam according to claim 1, 2 or 3, characterized in that, said several web members (5) are arranged on the same plane, and said several web members (5) ) are connected to the upper flange (3) and the lower flange (4) to form several triangular abdominal cavities in the axial direction. 5. The steel-concrete composite truss beam according to claim 1, 2 or 3, characterized in that, between the upper flange (3) and the lower flange (4) there are several webs along the axial direction. Rod group, a quadrilateral abdominal cavity is formed between each two web rod groups; said web rod group includes two web rods (5), one end of the two web rods (5) is affixed to the lower flange (4) Form a fixed connection point, the other ends of the two webs (5) are respectively connected with the upper flange (3), and the two webs (5) are connected with the upper flange (3) and the lower wing After the edges (4) are connected, an inverted triangular abdominal cavity is formed radially. 6. The steel-concrete composite truss beam according to claim 1, 2 or 3, characterized in that, between the upper flange (3) and the lower flange (4) there are several webs along the axial direction rod group, a quadrilateral abdominal cavity is formed between each two web rod groups; the described lower flange (4) includes two steel pipes arranged in parallel, and the described web rod group includes two web rods (5 ), one end of the two webs (5) is affixed to the upper flange (3) to form a fixed point, and the other ends of the two webs (5) are respectively connected with two steel pipes. 7. The steel-concrete composite truss beam according to claim 1, 2 or 3, characterized in that, between the upper flange (3) and the lower flange (4) there are several webs along the axial direction rod group, a quadrilateral abdominal cavity is formed between each two web rod groups; the described lower flange (4) includes two steel pipes arranged in parallel, and the described web rod group includes two web rods (5 ), one end of the two webs (5) is separately connected to the upper flange (3), and the other end of the two webs (5) is respectively connected with two steel pipes.

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