CN103485483A - Assembly type honeycombed web composite beam - Google Patents

Abstract

The invention relates to an assembled honeycomb web composite beam, which belongs to the technical field of building profiles. It is composed of two corrugated web channel steel composite beam webs butted and assembled by bolts. The cross section of corrugated web channel steel composite beam is composed of reinforced concrete flange, profiled steel plate, upper and lower flanges and web. The outermost side along the length direction is flush with a side line of the flange along the length direction, and the web and the flange are connected by single-sided fillet welds. The invention is an innovative composite beam suitable for an assembled steel structure system. Compared with the traditional assembled beam, it has the advantages of light weight, high bearing capacity and optimized mechanical properties.

Description

An Assembled Honeycomb Web Composite Beam

technical field

The invention relates to an assembled honeycomb web composite beam, which belongs to the technical field of building profiles.

Background technique

At present, the prefabricated steel structure residential system is an important direction for the development of the steel structure residential system. A large number of on-site welding is used in the construction of traditional steel structure residential buildings, which causes problems such as slow construction speed and serious environmental pollution, and the quality of welds is not suitable for control, which poses great hidden dangers to the safety performance of buildings. The prefabricated steel structure system can well overcome the shortcomings of traditional steel structure houses. Therefore, in this system, the mechanical properties of composite beams and composite beams after on-site assembly are a key research issue.

In the existing prefabricated steel structure system, two channel steels are usually used for assembly, and the webs of the two channel steels are butted and connected by bolts to form a prefabricated H-shaped steel. The steel beams that can be used in similar fields include hot-rolled I-beams, hot-rolled H-beams, welded H-beams, hot-rolled square steel pipes, welded box beams and channel steels, etc. When these steel beams are used in fabricated composite beam members, The flanges of the beams can only be connected by cover plates and bolts, the connection effect is poor and the shear resistance of the connection is also poor. However, in this connection method, the shear force is transmitted to the web through bolts, and the web is generally a flat steel plate, so the number of bolts and the amount of steel required for the web are large.

It can be seen that the effect of traditional steel components used in fabricated steel structures is not ideal, which not only affects the mechanical performance of components, but also consumes a large amount of steel. Therefore, it is imperative to carry out innovative research on the new type of force-bearing components of the assembled steel structure system. Based on the above reasons, the present invention proposes an assembled honeycomb web composite beam, and researches and discusses the use of the assembled honeycomb web composite beam instead of the traditional Section steel, as the steel beam in the composite beam, is further applied in the field of multi-high-rise buildings to achieve the purpose of reducing costs, optimizing mechanical properties and prolonging service life.

Contents of the invention

The object of the present invention is to provide an assembled honeycomb web composite beam, which has low cost and superior mechanical properties, and is suitable for the assembled steel structure system.

In order to achieve the above purpose, the technical solution adopted by the present invention is an assembled honeycomb web composite beam, which is assembled by two corrugated web channel steel girders through bolts, and the two corrugated web channel steel girder webs The plates are butt connected, and the web joints are assembled and connected by bolts.

The cross-section shape of corrugated web groove composite beam is composed of reinforced concrete flange, profiled steel plate, upper flange, web and lower flange. The upper flange is parallel to the lower flange, and the web is vertically located between the upper flange and the lower flange. Between the flanges; there are bolt holes on the web for connecting bolts; the reinforced concrete flange is located above the profiled steel plate, and the profiled steel plate is located above the upper flange; the reinforced concrete flange, profiled steel plate, and upper flange are three The latter is fixed by pegs; the pegs can be used as shear connectors to connect reinforced concrete wing plates, profiled steel plates, and upper flanges of steel beams into a whole, and the transverse steel bars are welded to the upper part of the profiled steel plates.

The web section has uniform or uneven periodic repeated corrugations, and the corrugated section is a rectangular corrugation curve, or a rectangular corrugation curve with an arc angle, or a trapezoidal corrugation curve, or a trapezoidal corrugation curve with an arc angle, or a wedge-shaped corrugation curve , or arc-angle wedge-shaped corrugation curve, or sinusoidal-curve corrugation curve; trapezoidal corrugation curve and arc-angle trapezoidal corrugation curve, the inclination angle of the trapezoidal oblique line segment is 20°-90°; wedge-shaped corrugation curve and arc-angle wedge-shaped corrugation curve The inclination angle of the wedge-shaped oblique line segment is 20°-90°; the corrugation density and height of the web can be changed according to the force requirements; the trapezoidal corrugation curve of the arc angle, the rectangular corrugation curve of the arc angle and the wedge-shaped corrugation curve of the arc angle adopt CNC bending technology, the sinusoidal curve is made by CNC rolling technology.

The upper and lower flanges are flat steel plates, the web is located between the upper and lower flanges as a whole, and the outermost side of the corrugation curve of the web along the length direction is flush with a side line of the upper and lower flanges along the length direction There are single-sided fillet welds between the web, the upper flange and the lower flange, and the present invention adopts fully automatic welding technology and professional positioning fixtures to ensure accurate positioning between the web and the flange, and the weld track unanimous.

Compared with traditional assembled composite beams, the present invention has the following advantages:

1. The assembled composite beam web of the present invention presents a corrugated curve type, which can effectively utilize the excellent out-of-plane rigidity, buckling bearing capacity and high fatigue strength of the corrugated steel plate. Compared with the flat steel plate assembled from channel steel, In the case of the same thickness, the shear bearing capacity and out-of-plane deformation resistance are significantly improved.

2. The assembled composite beam web is an assembly of two corrugated webs, which is equivalent to a double corrugated web, which can effectively improve the stability and bearing capacity of the member, especially the torsional bearing capacity. The plane layout of the web is Honeycomb shape, it is possible to obtain optimal results in terms of the overall load-carrying capacity of the component, so its mechanical properties are significantly improved compared to other similar products.

3. In the prefabricated honeycomb web composite beam proposed by the present invention, the biggest feature of the section combination is that the relationship between the mechanical properties of the section and the amount of steel used in the product is optimized to make it more rational and scientific, thereby improving the strength of the steel beam. Bearing capacity, reduce steel consumption, reduce project cost, realize standardized large-scale production, and significantly improve production efficiency.

Description of drawings

Fig. 1 is the structural schematic diagram of assembled honeycomb web composite beam;

Fig. 2 is the exploded view of the structural unit of the assembled honeycomb web composite beam;

Fig. 3 is the schematic diagram of corrugated web channel steel composite beam;

Fig. 4 is the unit exploded view of corrugated web channel steel composite beam;

Fig. 5 is a schematic diagram of a rectangular corrugated curve of a web section;

Fig. 6 is a schematic diagram of the trapezoidal corrugation curve of the web section;

Fig. 7 is a schematic diagram of the wedge-shaped corrugation curve of the web section;

Fig. 8 is a schematic diagram of the arc angle rectangular corrugation curve of the web section;

Fig. 9 is a schematic diagram of the arc angle trapezoidal corrugation curve of the web section;

Fig. 10 is a schematic diagram of a wedge-shaped corrugation curve of a web section;

Fig. 11 is a schematic diagram of the sinusoidal corrugation curve of the web section.

In the figure: 1. Corrugated channel steel composite beam 2. Upper flange 3. Web plate 4. Lower flange 5. Reinforced concrete wing plate 6. Profiled steel plate 7. Studs 8. Transverse reinforcement 9. Bolt holes 10. Bolts .

Detailed ways

The present invention will be further described below in conjunction with accompanying drawings and examples.

As shown in Figure 1, it is a structural schematic diagram of the assembled honeycomb web composite beam, and Figure 2 is an exploded view of the structural unit of the assembled honeycomb web composite beam, and the assembled honeycomb web composite beam proposed by the present invention is composed of two A corrugated web channel steel beam 1 is assembled by bolts 10, and two corrugated web channel steel beams 1 are connected by butt-joint webs, and assembled and connected by bolts 10 at the butt joints of the webs 3 .

As shown in Figure 3, it is a schematic diagram of a corrugated web channel steel composite beam, and Figure 4 is a unit exploded view of a corrugated web channel steel composite beam. In the fabricated honeycomb web composite beam proposed by the present invention, the corrugated web channel steel The cross-section shape of composite beam 1 is composed of reinforced concrete flange 5, profiled steel plate 6, upper flange 2, web 3 and lower flange 4; upper flange 2 is parallel to lower flange 4, and web 3 is vertically located Between the upper flange 2 and the lower flange 4; the web 3 has bolt holes 5 for connecting the bolts 6; the reinforced concrete flange 5 is located above the profiled steel plate 6, and the profiled steel plate 6 is located above the upper flange 2 The reinforced concrete wing plate 5, the profiled steel plate 6, and the upper flange 2 are fixed by the stud 7; the stud 7 can be used as a shear connector to connect the reinforced concrete wing plate 5, the profiled steel plate 6, and the upper flange 2 of the steel beam Integral; the transverse reinforcement 8 is welded on the upper part of the profiled steel plate; the upper flange 2 and the lower flange 4 are flat steel plates, and the web 3 is located between the upper flange 2 and the lower flange 4 as a whole; the corrugation curve of the web 3 is along the The outermost side in the length direction is flush with a side line of the upper flange 2 and the lower flange 4 along the length direction, and the web 3 and the upper flange 2 and the lower flange 4 are respectively welded with single-sided fillet welds; The corrugation density and height of the plate 3 can be changed according to the stress requirements, and the inclination angle of the trapezoidal oblique line segment of the trapezoidal corrugation curve and arc angle trapezoidal corrugation curve is 20°-90°; the wedge-shaped corrugation curve and the wedge-shaped arc angle wedge corrugation curve The inclination angle of the oblique line is 20°-90°; the arc angle trapezoidal corrugation curve, the arc angle rectangular corrugation curve and the arc angle wedge corrugation curve are made by CNC bending technology, and the sinusoidal curve is made by CNC rolling technology.

Figure 5 is a schematic diagram of the rectangular corrugation curve of the web section, Figure 6 is a schematic diagram of the trapezoidal corrugation curve of the web section, Figure 7 is a schematic diagram of the wedge-shaped corrugation curve of the web section, and Figure 8 is a circular arc angle rectangle of the web section Corrugation curve schematic diagram, Fig. 9 is the circular arc angle trapezoidal corrugation curve schematic diagram of web section, Fig. 10 is the circular arc angle wedge-shaped corrugation curve schematic diagram of web section, Fig. 11 is the sinusoidal corrugation curve schematic diagram of web section, the present invention proposes In a prefabricated honeycomb-shaped web steel girder, the section of the web 3 has uniform or non-uniform periodically repeated corrugations, and the corrugated section is a rectangular corrugation curve, or a rectangular corrugation curve with arc angles, or a trapezoidal corrugation The curve is either a trapezoidal corrugated curve with an arc angle, or a wedge-shaped corrugated curve, or a wedge-shaped corrugated curve with an arc angle, or a sinusoidal corrugated curve.

Claims (3)

1. An assembled honeycomb web composite beam, characterized in that: the composite beam is assembled by two corrugated web channel steel composite beams (1) through bolts (10), and the two corrugated web channel steel The web (3) of the composite beam (1) is butt-connected, and the web (3) is assembled and connected by bolts (10); the section profile of the corrugated web channel steel composite beam (1) is formed by the reinforced concrete wing 5), profiled steel plate (6), upper flange (2), web (3) and lower flange (4), upper flange (2) is parallel to lower flange (4), web (3 ) is vertically located between the upper flange (2) and the lower flange (4); the reinforced concrete flange (5) is located above the profiled steel plate (6), and the profiled steel plate (6) is located above the upper flange (2), The reinforced concrete wing (5), the profiled steel plate (6), and the upper flange (2) are fixed by studs (7); the studs (7) can be used as shear connectors to connect the reinforced concrete wing (5) 1. The profiled steel plate (6) and the upper flange of the steel beam (2) are connected as a whole; the transverse reinforcement (8) is welded to the upper part of the profiled steel plate; The section is a rectangular corrugated curve, trapezoidal corrugated curve, wedge-shaped corrugated curve or sinusoidal curve; there are bolt holes (9) on the web (3) for connecting bolts (10); the upper flange (2) and the lower flange (4 ) is a flat steel plate, the web (3) is located between the upper flange (2) and the lower flange (4) as a whole, and the corrugation curve of the web (3) is at the outermost side along the length direction The lower flange (4) is flush along one edge along its length. 2. The assembled honeycomb web composite beam according to claim 1, characterized in that: the rectangular corrugation curve is a rectangular corrugation curve with an arc angle, the trapezoidal corrugation curve is a trapezoidal corrugation curve with an arc angle, and the wedge-shaped corrugation The curve is an arc angle wedge-shaped corrugated curve; the inclination angle of the trapezoidal oblique line segment of the trapezoidal corrugated curve and the arc angle trapezoidal corrugated curve is 20°-90°; °—90°; the corrugation density and height of the web (3) can be changed according to the force requirements; the arc-angle trapezoidal corrugation curve, the arc-angle rectangular corrugation curve and the arc-angle wedge-shaped corrugation curve are made by CNC bending technology, The sinusoidal curves are made using CNC rolling technology. 3. An assembled honeycomb web composite beam according to claim 1 or 2, characterized in that: the web (3) and the upper flange (2) and lower flange (4) are respectively For one-sided fillet weld connections.

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