CN103485476A - Assembly type corrugated web holding-on H shaped steel composite beam - Google Patents

Abstract

The invention relates to an assembled corrugated web occlusal H-shaped steel composite beam, which is formed by occlusal butt joint of two corrugated channel steel composite beam webs and assembled by bolts. The cross-section shape of the corrugated channel steel composite beam is composed of upper flange, lower flange, web, profiled steel plate and reinforced concrete plate. One side in the length direction is a wave curve, which is the same shape as the web section curve; the upper flange is parallel to the lower flange, the web is vertically located between the flanges, and the corrugated curved edge of the flange is connected with the corrugated section of the web, and the web The plate and the flange are connected by single-sided fillet welds; the reinforced concrete flange, profiled steel plate, and upper flange are fixed by bolts. The invention can be applied to the innovative composite beam of the fully assembled steel structure system. Compared with the traditional assembled steel beam and composite beam, the invention has the advantages of saving steel materials, high bearing capacity and good mechanical performance.

Description

A prefabricated corrugated web occlusal H-shaped steel composite beam

technical field

The invention relates to an assembled corrugated web occlusal H-shaped steel composite beam, which belongs to the technical field of building profiles.

Background technique

The prefabricated steel structure system effectively overcomes the shortcomings of traditional steel structure housing, such as large amount of on-site welding, slow construction speed, and difficult control of construction quality, and is an important direction for the development of steel structure housing systems. In the prefabricated steel structure system, the on-site assembly of beams and beams is a key research issue.

Compared with steel beams, composite beams have the following advantages: the compression effect of composite floor concrete on steel beams can be used to increase the effective height of beam sections, improve the bending stiffness and bearing capacity of steel beams, thereby saving steel and reducing construction costs; Compared with the reinforced concrete beam-slab structure, steel structure composite beam can save formwork, reduce embedded parts, reduce self-weight, lower floor height, facilitate construction, shorten construction period, and facilitate installation of pipelines; composite beam can realize full assembly of high-rise steel structure system Mode.

In the existing prefabricated steel structure system, traditional composite beams are usually assembled using two channel steel composite beams, and the webs of the two channel steels are butted and connected by bolts to form a prefabricated H-shaped steel. However, in this splicing method, the shear force is transmitted to the web through bolts, and the web is a flat steel plate. The number of bolts required and the amount of steel used for the web are large, and the shear bearing capacity needs to be improved.

It can be seen that the effect of using traditional steel components in fabricated steel structures is not very satisfactory, which not only affects the mechanical performance of components, but also consumes a large amount of steel, resulting in unnecessary waste. Therefore, it is imperative to innovate a new type of force-bearing member applied to the fabricated steel structure system. Based on the above analysis, the present invention proposes a prefabricated corrugated web occlusal H-shaped steel composite beam. The composite beam can achieve the dual effects of improving the beam bearing capacity and saving steel, and has a wider range of uses. At the same time, it can realize large-scale industrial production and promote full assembly. The development of steel structure system.

Contents of the invention

The object of the present invention is to propose a prefabricated corrugated web occlusal H-shaped steel composite beam, which replaces the traditional steel girder with corrugated web occlusal H-shaped steel as the steel beam in the composite beam, and then provides a low-cost, superior mechanical performance , Applicable to prefabricated steel structure systems, especially prefabricated composite beams of long-span multi-high-rise prefabricated steel structure systems.

In order to achieve the above object, the technical solution of the present invention is an assembled corrugated web occlusal H-shaped steel composite beam, which is assembled by two corrugated channel steel composite beams through bolts, wherein the two corrugated channel steel composite The webs of the beams are occluded and connected, and the webs are connected by bolts; the corrugated channel steel composite beams have a cross-sectional shape consisting of upper flanges, webs, lower flanges, reinforced concrete flanges and profiled steel plates. The flange, profiled steel plate and upper flange are fixed by bolts; the upper flange is parallel to the lower flange, and the web is vertically located between the upper flange and the lower flange; the section of the web is uniform or uneven Repeated corrugations, the corrugation section is a rectangular corrugation curve, trapezoidal corrugation curve, wedge-shaped corrugation curve or sinusoidal curve; there are bolt holes on the web for connecting bolts; the upper and lower flanges are steel plates, and the The side parallel to the web is a wave curve, and the shape of the corrugation curve is the same as that of the corrugated section of the web; The edge and the corrugated section of the web are coincidently connected; the profiled steel plate is located above the upper flange, the transverse reinforcement is welded to the upper part of the profiled steel plate, and the reinforced concrete wing is located above the profiled steel plate, among which the profiled steel plate, the middle of the reinforced concrete wing plate and the web The parallel side of the plate is a wave curve, and the shape of the wave curve is the same as the shape of the wave section of the web, which can realize the occlusal connection of the reinforced concrete wing plates in the two channel steel composite beams.

The rectangular corrugation curve is an arc angle rectangular corrugation curve, the trapezoidal corrugation curve is an arc angle trapezoidal corrugation curve, and the wedge-shaped corrugation curve is an arc angle wedge-shaped corrugation curve; The inclination angle is 20°-90°; the inclination angle of the wedge-shaped oblique line segment of the wedge-shaped corrugation curve and arc-angle wedge-shaped corrugation curve is 20°-90°; the web, the upper flange and the lower flange are respectively single-sided Fillet welds; web corrugation density and height can be changed according to force requirements; arc angle rectangular corrugation curve, arc angle trapezoidal corrugation curve and arc angle wedge corrugation curve are made by CNC bending technology, and sine curve is made by CNC roller made by pressing technology.

Compared with the prefabricated composite beam in the traditional prefabricated steel structure system, the present invention has the following advantages:

1. The assembled steel girder web is an assembled corrugated steel plate, which can effectively use 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 by channel steel, the In the case of the same thickness, its shear bearing capacity and out-of-plane deformation resistance are significantly improved.

2. The assembled composite beam is occluded, effectively increasing the shear bearing capacity in the plane of the assembled composite beam. The shear force in the plane of the traditional assembled composite beam is borne and transmitted by bolts. The present invention relies on The occlusal action of the composite beam enables the entire composite beam to bear the shear force in the plane, which effectively improves the shear bearing capacity of the assembled composite beam, and can save a lot of steel on the premise of ensuring the shear bearing capacity.

3. In the prefabricated corrugated web occlusal H-shaped steel composite beam proposed by the present invention, the biggest feature of the section combination is to optimize the relationship between the mechanical properties of the section and the amount of steel used in the product to a greater extent, making it more rational and scientific It is more widely used than I-beam and H-beam composite beams; the present invention adopts fully automatic welding technology and professional positioning fixtures, which can ensure accurate positioning between the web and the flange, the weld track is consistent, and it is easy to achieve standardization , Effectively improve production efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the structure of an assembled corrugated web occlusal H-shaped steel composite beam;

Fig. 2 is an exploded view of the structural unit of the assembled corrugated web occlusal H-shaped steel composite beam;

Fig. 3 is a structural schematic diagram of a trapezoidal cross-section web of a corrugated web occluded H-shaped steel composite beam;

Fig. 4 is a schematic structural diagram of corrugated web occlusal H-shaped steel beams;

Figure 5 is an exploded view of the unit of the corrugated web occlusal H-shaped steel beam;

Fig. 6 is the schematic diagram of corrugated channel steel girder;

Fig. 7 is the unit exploded view of corrugated channel steel beam;

Fig. 8 is a schematic diagram of a rectangular corrugated curve of a web section;

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

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

Fig. 11 is a schematic diagram of a rectangular corrugation curve with an arc angle of a web section;

Fig. 12 is a schematic diagram of the arc angle trapezoidal corrugation curve of the web section;

Fig. 13 is a schematic diagram of the arc angle wedge-shaped corrugation curve of the web section;

Fig. 14 is the schematic diagram of the sinusoidal corrugation curve of the web section;

Figure 15 is a schematic diagram of the placement of the web of the corrugated channel steel girder;

Fig. 16 is a schematic diagram of web placement of fabricated corrugated web occlusal steel beams.

In the figure: 1. Corrugated channel steel composite beam 2, upper flange 3, web plate 4, lower flange 5, bolt hole 6, bolt 7, profiled steel plate 8, reinforced concrete wing plate 9, stud 10, transverse reinforcement .

Detailed ways

The present invention will be further illustrated below by means of embodiments in conjunction with the accompanying drawings.

As shown in Figure 1, it is a structural schematic diagram of an assembled corrugated web occlusal H-shaped steel composite beam, and Figure 2 is an exploded view of the structural unit of an assembled corrugated web occluded H-shaped steel composite beam. The beam is assembled by two corrugated channel steel composite beams 1 through bolts 6, and the webs of the two corrugated channel steel composite beams 1 are occluded butted, and assembled and connected by bolts 6 at the webs.

Figure 3 is a schematic structural diagram of the trapezoidal cross-section web of corrugated web occlusal H-shaped steel composite beams, Figure 4 is a structural schematic diagram of corrugated web occlusal H-shaped steel beams, and Figure 5 is the unit of corrugated web occlusal H-shaped steel beams Exploded view, Fig. 6 is a schematic diagram of a corrugated channel steel beam, Fig. 7 is a unit exploded view of a corrugated channel steel beam, in the assembled corrugated web occlusal H-shaped steel composite beam proposed by the present invention, the section opening of the corrugated channel steel composite beam 1 The model is composed of upper flange 2, web 3, lower flange 4, profiled steel plate 7 and reinforced concrete flange 8; upper flange 2 is parallel to lower flange 4, and web 3 is vertically located between upper flange 2 and lower Between the flanges 4; the web 3 has bolt holes 5 for connecting the bolts 6; the profiled steel plate 7 is located above the upper flange 2, the transverse steel bar 10 is welded to the upper part of the profiled steel plate 7, and the reinforced concrete wing plate 8 is located Above the profiled steel plate 7, the reinforced concrete wing plate 8, the profiled steel plate 7, and the upper flange 2 are fixed by studs 9.

Figure 8 is a schematic diagram of the rectangular corrugation curve of the web section, Figure 9 is a schematic diagram of the trapezoidal corrugation curve of the web section, Figure 10 is a schematic diagram of the wedge-shaped corrugation curve of the web section, and Figure 11 is a circular arc angle rectangle of the web section Schematic diagram of the corrugation curve, Figure 12 is a schematic diagram of the arc angle trapezoidal corrugation curve of the web section, Figure 13 is a schematic diagram of the arc angle wedge-shaped corrugation curve of the web section, Figure 14 is a schematic diagram of the sinusoidal corrugation curve of the web section, and Figure 15 is The schematic diagram of the web placement of the corrugated channel steel beam. Figure 16 is a schematic diagram of the web placement of the prefabricated corrugated web occlusal steel beam. Uniform and periodically repeating corrugations, the corrugation 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 an arc angle Wedge-shaped corrugation curve, or sinusoidal corrugation curve; in the prefabricated corrugated web occlusal steel beam proposed by the present invention, the upper flange 2 and the lower flange 4 are steel plates, and one side of the steel plate parallel to the web 3 is a wave curve , the shape of the corrugated curve is the same as that of the corrugated section of the web 3; The edges of the corrugated curves of 4 are coincidently connected, and there are single-sided fillet welds between the web 3 and the upper flange 2 and the lower flange 4 respectively; -90°; the inclination angle of the wedge-shaped oblique line segment of the wedge-shaped corrugation curve and the arc-angle wedge-shaped corrugation curve is 20°-90°; the corrugation density and height of the web 3 can be changed according to the force requirements; the arc-angle rectangular corrugation curve , Arc angle trapezoidal corrugation curves and arc angle wedge-shaped corrugation curves are made by CNC bending technology, and sinusoidal curves are made by CNC rolling technology.

Claims (3)

1. A prefabricated corrugated web occlusal H-shaped steel composite beam, characterized in that: the composite beam consists of corrugated channel steel composite beam (1), upper flange (2), web (3), lower flange (4 ), bolt holes (5), bolts (6), profiled steel plates (7), reinforced concrete wing plates (8), studs (9) and transverse steel bars (10); the composite beam (1) is composed of two The corrugated channel steel composite beam is assembled by bolts (6); the webs (3) of two corrugated channel steel composite beams (1) are occluded butt jointed, and the webs (3) are assembled and connected by bolts (6); the corrugated channel Steel composite beam (1) is connected by upper flange (2), web (3), lower flange (4), reinforced concrete flange (8) and profiled steel plate (7); reinforced concrete flange ( 8), the profiled steel plate (7), and the upper flange (2) are fixed by pegs (9); the upper flange (2) is parallel to the lower flange (4), and the web (3) is vertically located on the upper Between the edge (2) and the lower flange (4); the section of the web (3) is uniform or uneven periodically repeated corrugations, the corrugation section is a rectangular corrugated curve, trapezoidal corrugated curve, wedge-shaped corrugated curve or sinusoidal curve ; There are bolt holes (5) on the web (3) for connecting the bolts (6); the upper flange (2) and the lower flange (4) are steel plates, and one of the steel plates parallel to the web (3) The edge is a wave curve, and the shape of the corrugated curve is the same as that of the corrugated section of the web 3; the web (3) is placed on the edge of the corrugated curve of the upper flange (2) and the lower flange (4), and the upper flange (2 ) and the corrugated curve of the lower flange (4) coincide with the corrugated section edge of the web (3); the profiled steel plate (7) is located above the upper flange (2), and the transverse reinforcement (10) is welded to the profiled steel plate (7 ), the reinforced concrete wing plate (8) is located above the profiled steel plate 7, where the side of the profiled steel plate (7), reinforced concrete wing plate (8) parallel to the web (3) is a wave curve, and the corrugated curve The shape is the same as that of the corrugated section of the web (3), which can realize the occlusal connection of the reinforced concrete wing plates (8) in the two channel steel composite beams (1). 2. A prefabricated corrugated web occlusal H-shaped steel 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 curve It is an arc angle wedge-shaped corrugated curve; the inclination angle of the trapezoidal oblique line segment of the trapezoidal corrugated curve and arc angle rectangular corrugated curve is 20°-90°; the inclination angle of the wedge-shaped oblique line segment of the wedge-shaped corrugated curve and arc angle wedge-shaped corrugated curve is 20° -90°; there are single-side fillet welds between the web (3) of the steel beam and the upper flange (2) and lower flange (4); the corrugation density and height of the web (3) can be determined according to the force Ask for a change. 3. A prefabricated corrugated web occlusal H-shaped steel composite beam according to claim 1 or 2, characterized in that: arc angle rectangular corrugation curve, arc angle trapezoidal corrugation curve and arc angle wedge corrugation curve adopt numerical control Made by bending technology, the sinusoidal curve is made by CNC rolling technology.

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