CN1060242C - hollow profile steel - Google Patents
hollow profile steel Download PDFInfo
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- CN1060242C CN1060242C CN 95104962 CN95104962A CN1060242C CN 1060242 C CN1060242 C CN 1060242C CN 95104962 CN95104962 CN 95104962 CN 95104962 A CN95104962 A CN 95104962A CN 1060242 C CN1060242 C CN 1060242C
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- abdomen shell
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Abstract
The present invention relates to hollow profile steel. A ventral shield of profile steel whose the cross section presents an H shape is replaced by a ventral shell (2). The ventral shell (2) can be composed of at least one proximate matter (3) whose the cross section presents an elliptical shape, or can be composed of at least one proximate matter (4) whose the cross section presents an X shape, wherein the proximate matter (4) is formed by connecting two semiellipses at a minor axis in a back connecting mode, long axes of an ellipse and the semiellipses are vertically connected with an upper wing plate (1)and a lower wing plate (1) which are parallel, and the ventral shell (2) and the two wing plates (1) are welded into proximate matters which are symmetrical in right and left on the cross sections thereof. The profile steel has the advantages of strong capacity of instability resistance, consistent carrying capacity of all length and easy processing. Compared with the profile steel whose the cross section presents an H shape, the profile steel can save a lot of materials and has the economic cross section.
Description
The present invention relates to a kind of hollow profile steel, belong to the strip welded structural element of load-bearing, can be used as Engineering Structure Component.
Engineering Structure Component commonly used in the prior art is a H-shape cross section shaped steel.With the H-shape cross section shaped steel that hot-rolling method is produced, promptly its height of i iron or H shaped steel can not be too big.The higher i shaped steel structure of using in the engineering structures is produced with welding method.Because of it is highly bigger,, then need strengthen the thickness of web for improving the stability of member.
Chinese patent CN 87100148 discloses a kind of structural rod member, and it is made of with a web that is connected betwixt two blocks of wing plates.Web is trapezoidal wavy, and the bulging teat branch to these pole stock two longitudinal edge projections is arranged alternately.Compare with H-shape cross section shaped steel, this shaped steel is because web is thinner, and its weight has alleviated relatively.Existing weak point is: (1) is in its main embodiment, though web is wavy, in fact still is I-shaped to each cross section.It is symmetrical that these H-shape cross sections have only minority, and more section is that the left and right sides is asymmetric.When the load on acting on this structural rod member was positioned at the bilateral symmetry face of wing plate, for more cross section, load is the flexural center by section not, thereby made it produce torsional deflection, was easy to take place side torsional buckling song or torsional.(2) because web is be bent to form in the vertical trapezoidal, the corner that its two straight line joins produces stress at cold bending with when stressed and concentrates, and makes structural rod member on its whole length, and intensity is inconsistent.(3) welding of this section bar is mainly curved welding seam, and to compare operation easier big with the vertical masonry joint welding, is difficult for ensuring the quality of products.
The purpose of this invention is to provide a kind of anti-unstability ability economic section hollow profile steel strong, that carry unanimity and be easy to process all long Your Majestys.
Purpose of the present invention can realize by following measure.The web that replaces H-shape cross section shaped steel with the abdomen shell.The abdomen shell can be that at least one elliptical section section bar constitutes, also can be at least one and constitute at the X-shaped section section bar that the minor axis place back of the body is connected into by two semiellipses, its ellipse, semielliptical major axis perpendicular to and connecting two wing plates, abdomen shell and two wing plates are formed in symmetrical section bar on its cross section by being welded to connect.
Description of drawings:
Fig. 1 is the cross-sectional drawing of an embodiment of hollow profile steel of the present invention.
Fig. 2 is the cross-sectional drawing of another embodiment of hollow profile steel of the present invention.
Fig. 3 to Fig. 6 is the cross-sectional drawing of other embodiment of hollow profile steel of the present invention.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Hollow profile steel of the present invention as shown in the figure mainly is made of two parallel last lower wing plates 1 and abdomen shell 2.Abdomen shell 2 can be that at least one elliptical section section bar 3 constitutes, also can be at least one and constitute at the X-shaped section section bar that the minor axis place back of the body is connected into by two half elliptic section section bars, its ellipse, semielliptical major axis perpendicular to and connecting two wing plates 1.Abdomen shell 2 and two wing plates 1 are formed in symmetrical section bar on its cross section by being welded to connect.
In the embodiment 1 of hollow profile steel of the present invention shown in Figure 1, abdomen shell 2 between two parallel last lower wing plates 1 is elliptical section section bars 3, its long axis of ellipse is perpendicular to two wing plates 1, and coincides with the vertical axis of symmetry of two wing plates 1 on this shaped steel cross section.Abdomen shell 2 is connected by four vertical masonry joint weld seams with two wing plates 1.Constitute the elliptical section section bar 3 of abdomen shell 2, general by two half elliptic section section bars with complete major axis, be welded at commissure.For highly less hollow profile steel, the direct clod wash ovalisation of thin plate section section bar 3 can be welded into elliptical tube as abdomen shell 2.Also can be with welding book wall pipe, cold-drawn becomes elliptical tube as abdomen shell 2.
Figure 2 shows that the embodiment 2 of hollow profile steel of the present invention.Abdomen shell 2 between two parallel last lower wing plates 1 is X-shaped section section bars 4.X-shaped section section bar 4 is connect at the minor axis place back of the body by two half elliptic section section bars with complete major axis and is welded into.Constitute the X-shaped section section bar 4 of abdomen shell 2, two semielliptical major axis is perpendicular to two wing plates 1, and its vertical axis of symmetry coincides with the vertical axis of symmetry of two wing plates 1 on this shaped steel cross section.Abdomen shell 2 is connected by four vertical masonry joint weld seams with two wing plates 1.
Can adopt the section configuration of Fig. 3, two embodiment shown in Figure 4 for highly bigger hollow profile steel.In Fig. 3, abdomen shell 2 is made of in the welding of minor axis touching position perpendicular to two wing plates 1 and the elliptical section section bar 3 that is set up in parallel two major axis.Abdomen shell 2 and two wing plates 1 are formed in symmetrical section bar on its cross section, are connected by four vertical masonry joint weld seams.Abdomen shell 2 among Fig. 4 forms as embodiment 2 described X-shaped section section bars 4 and example setting by two, and its two half elliptic section section bars that face mutually constitute a complete ellipse, weld mutually at commissure.Abdomen shell 2 and two wing plates 1 are formed in symmetrical section bar on its cross section, are connected by the vertical masonry joint weld seam.
Fig. 5, Figure 6 shows that two other embodiment of hollow profile steel of the present invention.They be by embodiment 1, embodiment 2 respectively at the major axis place of the elliptical section section bar 3 of its abdomen shell 2, the vertical axis of symmetry place of X-shaped section section bar 4 adds continuous gusset 5 and constitutes.These two kinds of hollow profile steels generally are used for highly bigger situation.
Hollow profile steel of the present invention is according to instructions for use, and abdomen shell 2 can also be made of 3 even 3 above elliptical section shape materials 3 or X-shaped section section bar 4.
The advantage that hollow profile steel of the present invention compared with prior art has is: 1, adopt symmetrical structure in its cross section, overcome the shortcoming of easy generation side torsional buckling song and torsional, anti-unstability ability is strong. 2, the ellipse, the semiellipse that consist of the abdomen shell have larger radius of curvature, reduced the stress that clod wash causes and concentrated, and this shaped steel has constant cross section simultaneously, makes this shaped steel bearing capacity on whole length consistent. 3, continuous vertical masonry joint weld seam can be all adopted in welding, is easy to processing, thereby quality is guaranteed. 4, comparing with the I shape section profiled bar and can save more material, is a kind of economic section shaped steel.
The advantage that the present invention compared with prior art has can also further specify by comparison sheet 1-3.
Table 1 is a H-shape cross section shaped steel parameter list in the prior art.
Table 2 is a hollow profile steel parameter list of the present invention shown in the embodiment 1.
Table 3 is a hollow profile steel parameter list of the present invention shown in the embodiment 2.
Wherein:
H-shaped steel height
B-wing plate width
T-wing plate thickness
The d-web thickness
The wall thickness of δ-abdomen shell
A-abdomen shell ellipse, semielliptical semi-major axis
B-abdomen shell ellipse, semielliptical semi-minor axis
A-sectional shape area
The bent Critical Bending Moment of Mcr-side torsional buckling
Pcr-flexural buckling critical pressure
Table 1
Table 2
| Sequence number | H，mm | B，mm | t．mm | d，mm | A，cm 2 | Mcr，KN-m | Pcr，KN |
| 1 | 1000 | 500 | 24 | 20 | 430．40 | 8661．18 | 16212．85 |
| 2 | 800 | 400 | 20 | 16 | 281．60 | 3069．66 | 6917．11 |
| 3 | 600 | 300 | 16 | 12 | 164．16 | 840．61 | 2334．34 |
| 4 | 400 | 200 | 12 | 8 | 78．08 | 152．07 | 518．67 |
| Sequence number | H．mm | B．mm | t，mm | δ．mm | m．mm | b．mm | A，cm 2 | M cr，KN-m | Pcr，KN |
| 1 | 1000 | 500 | 24 | 4．5 | 476 | 48 | 313．44 | 11743．87 | 16544．09 |
| 2 | 800 | 400 | 20 | 3．5 | 380 | 40 | 205．80 | 4571．50 | 7061．62 |
| 3 | 600 | 300 | 16 | 284 | 32 | 125．50 | 1517．94 | 2394．08 | |
| 4 | 400 | 200 | 12 | 2．0 | 188 | 24 | 61．19 | 333．80 | 533．88 |
Table 3
| Sequence number | H，mm | B，mm | t，mm | d，mm | m，mm | b，mm | A，cm 2 | M cr，KN-m | P cr，KN |
| 1 | 1000 | 500 | 24 | 4．5 | 476 | 313．44 | 8741．84 | 16474．55 | |
| 2 | 800 | 400 | 20 | 3．5 | 380 | 40 | 205．80 | 3100．90 | 7031．40 |
| 3 | 600 | 300 | 16 | 3．0 | 284 | 32 | 125．50 | 862．55 | 2381．75 |
| 4 | 400 | 200 | 12 | 2．0 | 188 | 24 | 61．19 | 158．46 | 530．77 |
Claims (4)
1. hollow profile steel, have two parallel last lower wing plates, it is characterized in that: the web that replaces H-shape cross section shaped steel with abdomen shell [2], abdomen shell [2] can be that at least one elliptical section section bar [3] constitutes, also can be at least one and constitute at the X-shaped section section bar [4] that the minor axis place back of the body is connected into by two semiellipses, its ellipse, semielliptical major axis perpendicular to and connecting two wing plates [1], abdomen shell [2] is formed in symmetrical section bar on its cross section with two wing plates [1] by being welded to connect.
2, shaped steel according to claim 1 is characterized in that described abdomen shell [2] can be constituted, also can be made of an X type section section bar [4] by an elliptical section section bar [3].
3, shaped steel according to claim 1 is characterized in that described abdomen shell [2] can be made of two elliptical section section bars [3] that are set up in parallel, also can be made of two X-shaped section section bars [4] that are set up in parallel.
4, shaped steel according to claim 2 is characterized in that described abdomen shell [2] has continuous gusset [5] at the major axis of elliptical section section bar [3], the vertical axis of symmetry place of X-shaped section section bar [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95104962 CN1060242C (en) | 1995-05-16 | 1995-05-16 | hollow profile steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95104962 CN1060242C (en) | 1995-05-16 | 1995-05-16 | hollow profile steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1119134A CN1119134A (en) | 1996-03-27 |
| CN1060242C true CN1060242C (en) | 2001-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95104962 Expired - Fee Related CN1060242C (en) | 1995-05-16 | 1995-05-16 | hollow profile steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060242C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005021182A1 (en) * | 2003-08-29 | 2005-03-10 | Peter Andrew Gray | Hollow bar manufacturing process |
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1995
- 1995-05-16 CN CN 95104962 patent/CN1060242C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1119134A (en) | 1996-03-27 |
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