CN112282412A - Bolt welding hybrid reinforcement structure for open-hole beam - Google Patents
Bolt welding hybrid reinforcement structure for open-hole beam Download PDFInfo
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- CN112282412A CN112282412A CN202011083063.XA CN202011083063A CN112282412A CN 112282412 A CN112282412 A CN 112282412A CN 202011083063 A CN202011083063 A CN 202011083063A CN 112282412 A CN112282412 A CN 112282412A
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- shaped
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- welded
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- 238000003466 welding Methods 0.000 title claims description 33
- 230000002787 reinforcement Effects 0.000 title claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000010276 construction Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
- E04C3/083—Honeycomb girders; Girders with apertured solid web
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
In actual engineering, a steel structure building often needs to be provided with holes on a web plate due to reasons such as equipment installation and the like to meet equipment requirements, and the web plate can reduce the original bearing capacity of a steel beam after being weakened, so that the traditional stiffening rib reinforcing mode is changed, and the stiffening rib is reinforced by using the c-shaped flitch.
Description
Technical Field
The invention relates to the technical field of reinforcement of a steel structure frame open-pore beam, in particular to a bolt welding hybrid reinforcement structure for the open-pore beam.
Background
In the design Standard of Steel structures (GB 50017-2017), the reinforcing measures for the steel beam with a perforated web are specified as follows, the edge of a rectangular opening is preferably reinforced by longitudinal and transverse stiffening ribs, the end parts of the horizontal longitudinal stiffening ribs at the upper and lower edges of the rectangular opening preferably extend to 2 times of the width of a single-sided stiffening rib outside the edge of the opening, and when the length of the rectangular opening is greater than the height of the beam, the transverse stiffening ribs are arranged along the full height of the beam. The total width of the cross section of the stiffening rib of the rectangular orifice is not less than 1/2 of the width of the flange, the thickness is not less than the thickness of the flange, and when the length of the orifice is more than 500mm, the stiffening rib should be arranged on the two sides of the beam web. Therefore, the reinforcing mode specified in the specification mainly uses stiffening rib reinforcement, but because the stiffening rib has more welding seams in the construction process, the construction process is complicated, the problem of stress concentration of the welding seams is obvious, and meanwhile, the component is easy to deform due to overhigh temperature in the welding process, so that the use efficiency of the component is reduced. Aiming at the problems, a reinforcing measure for the c-shaped flitch of the open-hole beam of the steel structure frame is provided. On the basis of satisfying each item mechanical properties of trompil girder steel, reduce the steel volume simultaneously, simplify the construction process, avoid simultaneously because too much welding seam alternately leads to stress concentration problem.
Disclosure of Invention
The invention aims to provide a bolt welding hybrid reinforcing structure for an open-hole beam. The invention fixes the C-shaped flitch and the steel structure frame opening beam web, increases the thickness of the web section, and reduces the intersection of welding seams compared with the traditional reinforcement method, thereby greatly avoiding the stress concentration problem, and simultaneously, the invention also has better mechanical property and simple and convenient construction process.
In order to achieve the above object, the present invention adopts the following technical solutions.
A hybrid stud-welded reinforcement construction for an open-hole beam, comprising: the H-shaped steel column is welded with an I-shaped steel beam, a c-shaped flitch and a high-strength friction type positioning bolt, the side walls of the left flange and the right flange of the H-shaped steel column component are welded with the I-shaped steel beam component, two horizontal rib plates which are as high as the upper flange and the lower flange of the welded I-shaped steel beam component are respectively arranged on two sides of a web plate of the H-shaped steel column component, three surfaces of each horizontal rib plate are welded on the left flange and the right flange of the H-shaped steel column component and the web plate, and the c-shaped flitch is positioned on the web plate of.
And four positioning bolt holes are formed in the c-shaped pasting plate.
The c-shaped flitch is provided with an external tangent angle and an internal tangent angle, and the external tangent angle is the same as the internal tangent angle.
The thickness of the c-shaped attaching plate is the same as that of the flange of the welded I-shaped steel beam.
And the welding I-shaped steel beam web plate is provided with a positioning bolt hole corresponding to the c-shaped flitch plate.
The bolt is a high-strength friction type positioning bolt.
The c-shaped pasting plate and the welding I-shaped steel beam web are connected in a positioning mode through high-strength friction type positioning bolts.
And after the positioning is finished, welding the c-shaped pasting plate and the welding I-shaped beam web plate.
The weld seam is welded around only the outer three edges of the c-shaped flitch plate.
The beneficial effects of the invention are as follows.
The invention relates to a bolting-welding hybrid reinforcement structure for an open-hole beam, which reinforces a weakened part by arranging c-shaped flitches around an open hole of a web to increase the thickness of the web around the open hole and further increase the rigidity of the web. Compared with the traditional structure, the structure can effectively simplify the construction process and reduce the problems of stress concentration caused by excessive reinforcing welding seams of the traditional stiffening ribs and structural deformation caused by welding thermal effect in the welding process. The reinforcing effect the same as that of the traditional stiffening rib can be achieved while the steel consumption is reduced, and the bearing capacity is obviously improved compared with that of the traditional stiffening rib reinforcing mode.
Drawings
Fig. 1 is an exploded view of a stud-welded hybrid reinforcement structure for an open-hole beam according to the present invention.
Fig. 2 is a schematic view of the overall structure of the stud-welded hybrid reinforcement structure for an open-hole beam according to the present invention.
In the figure: 1. welding an I-shaped steel beam, 2 and H-shaped steel columns, 3 and c-shaped flitch plates, 4 high-strength friction type positioning bolts, 5 horizontal rib plates, 6 and c-shaped flitch plate positioning bolt holes and 7I-shaped steel beam web plate positioning bolt holes
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
As shown in the above fig. 1 and 2, a stud welding hybrid reinforcement structure for an open-hole beam belongs to the civil engineering field, and is used for reinforcing the open-hole beam of a steel structure frame under construction and built so as to compensate the loss of bearing capacity and the loss of mechanical properties caused by the open-hole.
The bolting and welding hybrid reinforcement structure for the open-hole beam comprises a welding I-shaped steel beam 1 and an H-shaped steel column 2, wherein the welding I-shaped steel beam 1 is welded on the side walls of the left flange and the right flange of the H-shaped steel column 2, two horizontal rib plates 5 which are as high as the upper flange and the lower flange of the welding I-shaped steel beam 1 are respectively arranged on two sides of a web plate of the H-shaped steel column 2, and three surfaces of each horizontal rib plate 5 are welded on the left flange, the right flange and the web plate of the H-.
A rectangular hole is formed in the center of a web plate of the welded I-shaped steel beam 1, and positioning bolt holes 7 are formed in the left side and the right side of the rectangular hole; the c-shaped pasting plate 3 is provided with positioning bolt holes corresponding to the web plate of the welding I-shaped steel beam 1, the c-shaped pasting plate 3 is positioned on the web plate of the welding I-shaped steel beam 1 through high-strength friction type positioning bolts 4, and three edges of the outer side of the c-shaped pasting plate 3 are welded.
The working principle of the present invention is explained below with reference to the accompanying drawings.
As shown in fig. 1 and 2, when the steel frame open-hole beam receives a load from a panel, the welded i-beam 1 is bent, and at this time, the c-shaped flitch 3 and the welded i-beam 1 are deformed in cooperation to receive a bending moment. The friction force generated by the high-strength friction type positioning bolt 4 and the welding seam resist deformation generated by external load together, so that the reinforcement effect is achieved.
The above examples are intended only to illustrate the technical solution of the present invention and not to limit it, and it will be apparent to those skilled in the art that various changes and modifications may be made in the examples without departing from the principle of the present invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A hybrid stud-welded reinforcement construction for an open-hole beam, comprising: the steel beam welding device comprises an H-shaped steel column component, a welding I-shaped steel beam, a c-shaped pasting plate and a high-strength friction type positioning bolt, wherein the welding I-shaped steel beam component is welded on the side walls of the left flange and the right flange of the H-shaped steel column component, two horizontal rib plates which are as high as the upper flange and the lower flange of the steel beam component are respectively arranged on two sides of a web plate of the H-shaped steel column component, three surfaces of each horizontal rib plate are welded on the left flange and the right flange of the H-shaped steel column component and the web plate, and the c-shaped pasting plate is positioned on the welding I.
2. A stud welded hybrid reinforcement construction for an open-hole beam according to claim 1, characterized in that: the c font flitch is equipped with external chamfer and interior chamfer, and is equipped with the positioning bolt hole on the c font flitch, correspond on the welding I-steel beam web and the c font flitch and be provided with the positioning bolt hole, and the positioning bolt hole on the welding I-steel beam web passes through high strength friction type positioning bolt and the positioning bolt hole connection on the c font flitch.
3. A stud welded hybrid reinforcement construction for an open-hole beam according to claim 1, characterized in that: the thickness of the c-shaped attaching plate is equal to that of the flange of the welded I-shaped steel beam.
4. A stud welded hybrid reinforcement construction for an open-hole beam according to claim 1, characterized in that: the angle of the inner tangent angle of the c-shaped flitch is equal to the angle of the outer tangent angle.
5. A stud welded hybrid reinforcement construction for an open-hole beam according to claim 1, characterized in that: the c-shaped flitch only performs girdling on three edges of the outer side of the c shape, and no welding measures are taken on the lower edge and the inner side edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011083063.XA CN112282412A (en) | 2020-10-12 | 2020-10-12 | Bolt welding hybrid reinforcement structure for open-hole beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011083063.XA CN112282412A (en) | 2020-10-12 | 2020-10-12 | Bolt welding hybrid reinforcement structure for open-hole beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112282412A true CN112282412A (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011083063.XA Pending CN112282412A (en) | 2020-10-12 | 2020-10-12 | Bolt welding hybrid reinforcement structure for open-hole beam |
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| CN (1) | CN112282412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863573A (en) * | 2021-10-27 | 2021-12-31 | 中冶建工集团有限公司 | Manufacturing method of rectangular orifice reinforcing structure of assembled steel beam web |
-
2020
- 2020-10-12 CN CN202011083063.XA patent/CN112282412A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863573A (en) * | 2021-10-27 | 2021-12-31 | 中冶建工集团有限公司 | Manufacturing method of rectangular orifice reinforcing structure of assembled steel beam web |
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Application publication date: 20210129 |