CN209145143U - A cold-formed thin-walled steel corrugated web composite beam - Google Patents

Abstract

The utility model discloses a kind of light gauge cold-formed steel shape corrugated web combination beams, are connected with clod wash equilateral channel steel through tapping screw, self tapping self-drilling screw or nailing by cold bending thin wall corrugated plating.Lower flange respectively uses a clod wash equilateral channel steel on the combination beam, channel steel opening is opposite to be placed in parallel, corrugated web is made of cold bending thin wall corrugated plate type steel, upper lower flange clear span is identical as corrugated web wave height, corrugated web straight panel section is bonded with upper lower flange short side, and the two joint place is using tapping screw, self tapping self-drilling screw or nailing connection.Corrugated web waveform uses trapezoidal waviness curve or arc chord angle trapezoidal waveform curve, and tapping screw, self tapping self-drilling screw or nailing quantity and spacing can be adjusted according to stress condition.The utility model is a kind of novel compositions girder steel suitable for cold bending thin wall light section steel structure, has the advantages that high-mechanic, low-material-consumption, speed installation.

Description

A cold-formed thin-walled steel corrugated web composite beam

technical field

The utility model belongs to the technical field of building profiles, relates to a composite beam, in particular to a cold-formed thin-walled steel corrugated web composite beam.

Background technique

At present, the cold-formed thin-walled light steel structure system is developing rapidly in my country. Compared with the traditional steel structure system, the cold-formed thin-walled light steel structure system saves more steel, has less on-site welding work, less construction pollution, the overall structure is lightweight and high-strength, has good seismic performance, and has obvious economic benefits. However, the light steel trusses widely used in cold-formed thin-walled light-weight steel structural systems have problems such as too many splicing members, complicated splicing angles, and insufficient out-of-plane stiffness.

In order to solve the above problems, cold-formed C-shaped or U-shaped steel composite beams can be used in the project. The out-of-plane stiffness of the composite beam is insufficient, the local buckling bearing capacity is not high, and the materials used are increased. Another solution is to use a corrugated web H-beam. The flange of the beam and the web are connected by welding. Because the thickness of the plate of the cold-formed thin-walled member is very small, the welding construction difficulty increases and the quality is not easy to guarantee. Poor quality leads to premature failure of components. Therefore, it is necessary to develop a beam with a more reasonable combination form, which can not only save the amount of steel, but also obtain higher out-of-plane stiffness and bearing capacity, and at the same time, it can simplify the connection processing process and improve the construction efficiency.

Utility model content

The purpose of the utility model is to propose a cold-formed thin-walled steel corrugated web composite beam belonging to the field of building profiles, which improves the existing cold-formed thin-walled steel structural components and improves the mechanical performance of the components It fully saves materials and simplifies the installation process, making the light steel structure system more economical and reasonable.

In order to achieve the above-mentioned purpose and solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A cold-formed thin-walled steel corrugated web composite beam is characterized in that: it is composed of an upper flange, a lower flange and a corrugated web sandwiched between the two flanges, and the upper flange and the lower flange are Channel steel with two openings placed opposite each other, the upper and lower ends of the corrugated web are respectively placed in the grooves of the upper and lower channel steels, and the adjacent wave crests or troughs of the corrugated web are respectively provided with two side walls in the channel steel. At the contact surface, the corrugated web is connected with the two side walls of the channel steel by connecting pieces at the contact surface, and the corrugated web is made of cold-formed thin-walled corrugated steel with good mechanical strength.

As an improvement, the wave heights at the upper and lower ends of the corrugated web are respectively equal to the net width in the channel of the upper and lower channel steels, and the adjacent wave crests or troughs of the corrugated web are in close contact with the two side walls in the channel steel respectively.

As an improvement, the connector is a self-tapping screw, a self-tapping self-drilling screw or a shooting nail.

As an improvement, the waveform of the corrugated web is any one or a combination of trapezoidal corrugations, sinusoidal corrugations, rectangular corrugations, and arc angle trapezoidal corrugations.

As an improvement, the corrugated web is a trapezoidal corrugated plate or a circular arc angle trapezoidal corrugated plate, the length of the straight plate section between the corrugated web and the inner side wall of the channel steel is not less than 20mm, and the inclination angle of the inclined plate section is 30°~90°.

As an improvement, the corrugated web is made by roll pressing or roll punching.

As an improvement, the channel steel is cold-formed equilateral channel steel.

Compared with the prior art, the beneficial effects of the present utility model are:

The utility model proposes a cold-formed thin-walled steel corrugated web composite beam, which improves the mechanical performance of traditional cold-formed thin-walled light steel structural members. After comprehensive comparison, the utility model has the following advantages.

The cold-formed thin-walled steel corrugated web composite beam adopts trapezoidal corrugated or arc angle trapezoidal corrugated steel plate, and the plate thickness is small but has excellent out-of-plane rigidity and buckling resistance capacity, and the torsion resistance and shear resistance capacity are significantly improved. Compared with the I-shaped or box-shaped section with the two limbs spliced together, under the condition of the same section, greater torsional resistance, shear bearing capacity and deformation resistance can be obtained, and it is applied to the cold-formed thin-walled light-weight steel structure system. In addition, steel can be further saved, which has better economic benefits.

The cold-formed thin-walled steel corrugated web composite beam is connected by self-tapping screws, self-tapping self-drilling screws or shooting nails, without welding or drilling, and the assembly process is simple, fast and pollution-free. At the same time, the cold-formed equilateral channel steel, corrugated steel plate, self-tapping screw, self-tapping self-drilling screw or shooting nail used in this composite beam all have common specifications in current engineering. There is no need to develop a new production process, which reduces the cost of production research and development.

Therefore, using the cold-formed thin-walled steel corrugated web composite beam of the present invention in the cold-formed thin-walled light steel structure can improve the construction efficiency and achieve good economic effects. All components of the composite beam can be standardized in the factory and can be assembled accurately. Compared with similar products in the current light steel structure, the composite beam has better mechanical properties, less steel consumption, more convenient assembly, and complete The welding process or the splicing work of a large number of rods is omitted, and the on-site installation is faster and more environmentally friendly.

Description of drawings

Fig. 1 is the overall structure diagram of the cold-formed thin-walled steel corrugated web composite beam of the utility model.

FIG. 2 is a disassembled view of each component of the cold-formed thin-walled steel corrugated web composite beam of the utility model.

Figure 3 is a top view of the flange and the corrugated web being connected by screws.

Figure 4 is a schematic diagram of the trapezoidal waveform curve used in the corrugated web.

Figure 5 is a schematic diagram of the arc angle trapezoidal waveform curve adopted by the corrugated web.

Figure 6 is a schematic diagram of a rectangular wave curve with a circular arc angle used in the corrugated web.

Figure 7 is a schematic diagram of a sinusoidal waveform curve used in the corrugated web.

In the figure: 1-upper flange, 2-lower flange, 3-corrugated web, 4-connector.

Detailed ways

The present utility model will be further described below through embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a cold-formed thin-walled steel corrugated web composite beam proposed by the present utility model is composed of an upper flange 1 and a lower flange 2 and a corrugated beam sandwiched between the two flanges. It consists of a web 3, the upper flange 1 and the lower flange 2 are cold-formed equilateral channels with two openings placed opposite each other, and the upper and lower ends of the corrugated web 3 are respectively placed in the grooves of the upper and lower channel steels , the adjacent wave crests or troughs of the corrugated web 3 are respectively provided with contact surfaces that are close to the two side walls in the channel steel, and the corrugated web 3 is at the contact surface with the two side walls of the channel steel through self-tapping screws, Self-tapping self-drilling screws and nails are connected by any one or several combinations. The opening in Figure 2 is the dismantling effect after the splicing is completed. The actual installation does not need to be drilled in advance, and an electric drill with a sleeve can be used to realize the electric screwing of self-tapping screws or self-tapping self-drilling screws.

As shown in Figure 3, the upper flange 1 and the lower flange 2 are two cold-formed equilateral channel steels placed symmetrically, and the upper and lower flanges 2 of the composite beam each adopt a cold-formed equilateral channel steel, and the channel steel openings are opposite to each other. Placed in parallel, the corrugated web 3 is placed in the middle. The corrugated web 3 is a trapezoidal corrugated plate, and the corrugation height is the same as the inner width of the cold-formed equilateral channel, so that the straight section of the corrugated web 3 (that is, the wave crest or the wave trough). ) can be in close contact with the inner wall of the cold-formed equilateral channel. After the flange and the web are positioned, use self-tapping screws, self-tapping self-drilling screws or shooting nails to connect the 3 straight sections of the corrugated web and the cold-formed equilateral channel steel. The number and spacing of the screws need to be based on the corrugated web. Plate 3 straight plate section length adjustment.

As shown in Figures 4 and 5, the corrugated web 3 involved in the present invention is in the form of a trapezoid, and the angle of the inclined plate segment can be adjusted within 30° to 90° to meet the needs. The height of the web and the density of the corrugation are both Can be designed according to engineering needs.

It should be pointed out that the waveform of the corrugated web 3 of the present invention is not limited to a trapezoidal corrugated plate, but can also be any one or a combination of trapezoidal corrugations, sinusoidal corrugations, rectangular corrugations and arc angle trapezoidal corrugations.

Claims (7)

1. A cold-formed thin-walled steel corrugated web composite beam is characterized in that: it is composed of an upper flange, a lower flange and a corrugated web sandwiched between two flanges, and the upper flange and the lower The edge is a channel steel with two openings placed opposite to each other. The upper and lower ends of the corrugated web are respectively placed in the grooves of the upper and lower channel steels. The adjacent crests or valleys of the corrugated web are respectively provided with two channels in the channel steel The corrugated web is connected to the two side walls of the channel steel at the contact surface on the contact surface where the side walls are close to each other, and the corrugated web is made of cold-formed thin-wall corrugated steel with good mechanical strength. 2. The cold-formed thin-walled steel corrugated web composite beam according to claim 1, characterized in that: the wave heights at the upper and lower ends of the corrugated web are respectively equal to the net widths of the upper and lower channel steels, and the Adjacent wave crests or wave troughs are in close contact with the two side walls in the channel steel respectively. 3 . The cold-formed thin-walled steel corrugated web composite beam according to claim 2 , wherein the connecting piece is a self-tapping screw, a self-tapping self-drilling screw or a shooting nail. 4 . 4. The cold-formed thin-walled steel corrugated web composite beam according to any one of claims 1 to 3, wherein the waveform of the corrugated web is trapezoidal corrugation, sinusoidal corrugation, rectangular corrugation and arc angle trapezoid Any one or several combinations of ripples. 5. The cold-formed thin-walled steel corrugated web composite beam according to claim 4, wherein the corrugated web is a trapezoidal corrugated plate or a circular arc angle trapezoidal corrugated plate, and the corrugated web is in contact with the inner side wall of the channel steel The length of the straight plate section is not less than 20mm, and the inclination angle of the inclined plate section is 30°~90°. 6 . The cold-formed thin-walled steel corrugated web composite beam according to claim 5 , wherein the corrugated web is made by rolling or rolling. 7 . 7. The cold-formed thin-walled steel corrugated web composite beam of claim 1, wherein the channel steel is a cold-formed equilateral channel steel or a hot-rolled channel steel, and when the channel steel is a hot-rolled channel steel, Connections are bolted.