CN111331215B - Wind-proof construction method for full penetration welding of butt steel stand column - Google Patents
Wind-proof construction method for full penetration welding of butt steel stand column Download PDFInfo
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- CN111331215B CN111331215B CN202010186623.8A CN202010186623A CN111331215B CN 111331215 B CN111331215 B CN 111331215B CN 202010186623 A CN202010186623 A CN 202010186623A CN 111331215 B CN111331215 B CN 111331215B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- Joining Of Building Structures In Genera (AREA)
Abstract
A wind-proof construction method for butt joint steel upright post full penetration welding is characterized by comprising the following steps: a. fixing the lower section of steel stand column, b, welding a flat steel ring on the inner side of the welding position, close to the position to be butted, of the upper surface of the end sealing plate of the lower section of steel stand column, c, hoisting the upper section of steel stand column to be butted with the lower section of steel stand column, d, implementing full penetration welding between the upper section of steel stand column and the lower section of steel stand column, and completing the welding of the butted steel stand column. The windproof construction method for the full penetration welding of the butted steel upright post has the advantages that the flat steel ring device is simple in structure, convenient to manufacture and safe and reliable in engineering quality, the flat steel ring can play a role of a wind shield, when the steel column is subjected to the first bottoming of the full penetration welding, the flat steel is used as a substrate, welding liquid can be completely attached to the flat steel, the welding quality is ensured, the investment of the flat steel ring is relatively small, and the engineering cost is reduced.
Description
Technical Field
The invention relates to a welding construction method, in particular to a windproof construction method for full penetration welding of a butted steel upright post.
Background
The fixed lower section column is installed earlier when the steel structure stand is installed in the subsection, carries out butt joint with the upper section column again, when adopting the welding form, receives the wind influence, and is great, all need take the full penetration welding's of groove mode to the great stand of wall thickness. The full penetration welding needs to form a certain gap between the upper section steel column and the lower section steel column so as to meet the structural strength requirement of welding. However, since the gap belongs to vertical face welding, the gap is a difficult point for quality control, vertical welding is difficult to weld, and since the welding liquid of the welding wire at the rear side of the welding seam position after the upright post is installed can not be perfectly attached to the upper surface and the lower surface of the gap, part of the welding liquid is likely to flow to the rear of the gap during first welding bottoming, so that the welding seam at the bottom has defects, and the flaw detection cannot be passed. And when the welding seam is welded and melted through, the four sides can be influenced by wind power at the moment, and the welding can be greatly influenced. Generally, only the wind shield can be arranged on the periphery of the steel column. However, if the welding is carried out at a high altitude position, the wind shield is difficult to arrange, the wind power is several times larger than the ground, and the welding quality is seriously influenced.
Therefore, based on the reasons, a measure for improving the quality of the full penetration welding construction of the butted steel upright column needs to be researched.
Disclosure of Invention
The invention aims to provide a safe and reliable wind-proof construction method for full penetration welding of a butted steel upright post.
In order to achieve the purpose, the technical solution of the invention is as follows:
a wind-proof construction method for butt joint steel upright post full penetration welding is characterized by comprising the following steps:
a. fixing the lower section of steel upright;
b. welding a flat steel ring on the inner side of the upper surface of the end sealing plate of the lower section steel upright column close to the position to be butt-welded, wherein the distance between the inner side of the flat steel ring and the inner wall of the welding seam of the steel upright column is more than or equal to 2 mm;
c. hoisting an upper section steel upright column to be butted with a lower section steel upright column;
d. and performing full penetration welding between the upper section steel upright post and the lower section steel upright post to complete the welding of the butted steel upright posts.
The wind-proof construction method for the full penetration welding of the butted steel upright post can be further realized by adopting the following technical measures.
In the method, the flat steel ring is a square flat steel ring or a round flat steel ring matching with the cross-sectional shape of the steel column.
In the method, the thickness of the flat steel is more than or equal to 2.5 mm.
In the method, the width of the flat steel is larger than the height of the gap between the upper section steel upright post and the lower section steel upright post, and the flat steel is vertically welded with the upper end sealing plate of the lower section steel upright post.
After the technical scheme is adopted, the wind-proof construction method for the full penetration welding of the butted steel upright post has the following advantages:
1. the flat steel ring device has simple structure and convenient manufacture;
2. the flat steel ring can play a role of a wind shield, and can completely block wind energy in all directions of each surface of the upright post, thereby playing a good role in wind prevention; after the flat steel ring is welded, when the steel column is subjected to primary bottoming of full penetration welding, the flat steel is used as a substrate, and welding liquid can be completely attached to the flat steel, so that the bottom of a full penetration welding line is free from quality defects such as flowing, collapse and cavities, and the welding quality is ensured;
3. the investment of the flat steel ring is relatively small, and the engineering cost is reduced.
Drawings
Fig. 1 is a schematic layout view of an end sealing plate and a square flat steel ring of a lower section steel column according to an embodiment of the present invention;
FIG. 2 is an elevation view of FIG. 1;
FIG. 3 is a schematic view of the butt joint of an upper section steel upright and a lower section steel upright of the embodiment of the invention;
fig. 4 is a schematic view of the butt joint of an upper section steel upright and a lower section steel upright in the embodiment of the invention.
In the figure: 1 lower steel column, 2 end sealing plates, 3 square flat steel rings, 4 upper steel columns and 5 full penetration welding seams.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention relates to a wind-proof construction method for butt joint steel upright post full penetration welding, which comprises the following steps:
referring now to fig. 1 and 2, fig. 1 is a schematic diagram illustrating an arrangement of an end plate and a square steel band of a lower section of a steel column according to an embodiment of the present invention, and fig. 2 is an elevation view of fig. 1. As shown in the figure, after the lower section of steel upright column 1 is fixed and before the upper section of steel upright column 4 is installed, a flat steel is welded on the upper end plate of the lower section of steel upright column and close to the inner side of the welding position to be butted, and the thickness of the flat steel is 3 mm. In the embodiment, a square flat steel ring 3 is used for matching with a square section steel column. The square flat steel ring is used for blocking wind power at the rear side of the gap during welding; the distance between the flat steel and the inner wall of the welding seam of the steel column is kept about 2mm, so that the influence on the hoisting and splicing of the upper steel column and the lower steel column is reduced. The thickness of the flat steel is preferably more than 2.5mm, so that the flat steel is prevented from burning through during welding and is arranged in the whole length direction along the welding direction. The width of the flat steel is slightly larger than the height of the gap between the upper upright post and the lower upright post, and the flat steel is vertically welded with the upper end sealing plate 2 of the lower section post.
Fig. 3 is a schematic diagram of butt joint of an upper section steel column and a lower section steel column according to an embodiment of the present invention, and fig. 4 is a schematic diagram of butt joint of an upper section steel column and a lower section steel column according to an embodiment of the present invention, so as to finally form a full penetration weld 5. In the actual operation of the windproof construction method for the full penetration welding of the butted steel upright columns, when the operation position of the butted welding seams of the upper and lower section columns is low and personnel can directly operate the butted welding seams on the ground, the lower section column can be installed firstly, and then the flat steel is welded. If the butt weld joint is higher, when personnel need to ascend, the flat steel is welded on the ground in advance, or is welded uniformly when being processed in a factory.
The invention has substantive characteristics and obvious technical progress, and the windproof construction method of the butt joint steel upright post full penetration welding can play a role of a wind shield after welding the flat steel ring, and can completely block wind energy on each surface of the upright post in each direction, thereby playing a good windproof role. After the flat steel is welded, when the steel column is subjected to primary bottoming of full penetration welding, the flat steel is used as a substrate, and welding liquid can be completely attached to the flat steel, so that quality defects such as flowing, collapse and cavities do not occur at the bottom of a full penetration welding line, and the welding quality is ensured. The flat steel ring structure overcomes the difficult problems of wind resistance of field outdoor full penetration welding and poor quality of the first substrate welding line, and the investment is relatively small.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (4)
1. A wind-proof construction method for butt joint steel upright post full penetration welding is characterized by comprising the following steps:
a. fixing the lower section of steel upright;
b. welding a flat steel ring on the inner side of the upper surface of the end sealing plate of the lower section steel upright column close to the position to be butt-welded, wherein the distance between the inner side of the flat steel ring and the inner wall of the welding seam of the steel upright column is more than or equal to 2 mm;
c. hoisting an upper section steel upright column to be butted with a lower section steel upright column;
d. and performing full penetration welding between the upper section steel upright post and the lower section steel upright post to complete the welding of the butted steel upright posts.
2. A wind-proof construction method of butt-joint steel upright post full penetration welding according to claim 1, characterized in that said flat steel ring is a square flat steel ring or a round flat steel ring matching the section shape of the steel upright post.
3. The wind-proof construction method for full penetration welding of the butted steel upright post as recited in claim 1, wherein the thickness of the flat steel is more than or equal to 2.5 mm.
4. The method for wind-proof construction of full penetration welding of butted steel columns as claimed in claim 1, wherein said flat steel has a width greater than the height of the gap between the upper section steel column and the lower section steel column, and is vertically welded to the upper end closing plate of the lower section steel column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186623.8A CN111331215B (en) | 2020-03-17 | 2020-03-17 | Wind-proof construction method for full penetration welding of butt steel stand column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186623.8A CN111331215B (en) | 2020-03-17 | 2020-03-17 | Wind-proof construction method for full penetration welding of butt steel stand column |
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| Publication Number | Publication Date |
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| CN111331215A CN111331215A (en) | 2020-06-26 |
| CN111331215B true CN111331215B (en) | 2021-12-07 |
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| CN202010186623.8A Active CN111331215B (en) | 2020-03-17 | 2020-03-17 | Wind-proof construction method for full penetration welding of butt steel stand column |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201239865Y (en) * | 2008-07-25 | 2009-05-20 | 北京城建集团有限责任公司 | Wind-proof shed for construction steel structure low temperature welding |
| KR20130073340A (en) * | 2011-12-23 | 2013-07-03 | 현대중공업 주식회사 | Protecting assembly against wind for butt welding and using method thereof |
| CN104325230B (en) * | 2014-10-14 | 2016-05-11 | 中国十七冶集团有限公司 | A kind of large-sized workshop box column docking welding method |
| CN205967861U (en) * | 2016-07-29 | 2017-02-22 | 天津市世纪道康建筑科技有限公司 | Portable for steel structure welding deep bead that can fix |
| CN209491433U (en) * | 2018-11-09 | 2019-10-15 | 中广核工程有限公司 | Nuclear power plant containment shell Leak-tight liner back of weld Windproof protective device |
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