CN111570977A - Butt welding connection method for building supporting circular tube steel column - Google Patents
Butt welding connection method for building supporting circular tube steel column Download PDFInfo
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- CN111570977A CN111570977A CN202010454998.8A CN202010454998A CN111570977A CN 111570977 A CN111570977 A CN 111570977A CN 202010454998 A CN202010454998 A CN 202010454998A CN 111570977 A CN111570977 A CN 111570977A
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- welding
- circular tube
- connection method
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a butt welding connection method for a building support circular tube steel column, which comprises the following steps: providing two steel columns and a plurality of welding wires, sequentially baking and insulating the welding wires, vertically superposing and placing the two steel columns at a position required by a user, and welding by adopting a carbon dioxide gas shielded welding method when the ambient temperature reaches above a characteristic temperature, so that the welding wires are filled between the two steel columns after being melted and then condensed to form a butt-joint welding line, and the two steel columns are connected into a whole. By adopting the technical scheme provided by the invention, the welding wire is subjected to pretreatment such as baking, heat preservation and the like before welding, so that moisture contained in the welding wire can be fully evaporated, pores in a welding line formed after welding are prevented from being generated, cracks are prevented from being generated in the welding line, the mechanical property and strength of the welding line are improved, and the mechanical property, structural strength and bearing capacity of the whole welded steel column are further improved.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a butt welding connection method for a building supporting circular tube steel column.
Background
The concrete filled steel tube tower column is a new type of building supporting structure, and is a composite structure formed by filling concrete in a vertical steel tube and connecting the concrete and the steel tube into a whole after the concrete is solidified, and is widely applied to various building engineering at present, the steel tube concrete tower column has the advantages of high strength, light weight, good plasticity, fatigue resistance, good impact resistance and the like, the steel column in the existing steel tube concrete tower column applied to the building engineering is generally made by welding after a steel plate is wound into a cylindrical shape, the steel plates used for manufacturing the steel columns are generally rolled, and for the convenience of transportation, the external width of the steel plates has various specifications, when the distance between every two adjacent steel tube concrete towers is higher in the building engineering, the height required by the steel tube concrete towers is higher, and a plurality of steel columns are required to be connected together in a butt welding way, therefore, the quality of the butt welding has a great influence on the overall structural strength and bearing capacity of the steel pipe concrete tower column.
Disclosure of Invention
In order to solve the technical problem, the invention provides a butt welding connection method for building supporting circular tube steel columns.
The invention provides a butt welding connection method for a building support circular tube steel column, which comprises the following steps of:
providing two steel columns and a plurality of welding wires, sequentially baking and insulating the welding wires, vertically superposing and placing the two steel columns at a position required by a user, and welding by adopting a carbon oxide gas shielded welding method when the ambient temperature reaches above a characteristic temperature, so that the welding wires are filled between the two steel columns after being melted and then are condensed to form a butt-joint welding line, and the two steel columns are connected into a whole.
The welding wire is model number CJ 556N.
Flanges are arranged at the tail ends of the steel columns, and when the two steel columns are vertically overlapped and placed, the corresponding flanges on the two steel columns are opposite to each other and are connected together through a plurality of bolts.
The butt welding connection method for the building supporting circular tube steel column further comprises the following steps: and grinding grooves at the tail ends of the steel columns respectively, and enabling the corresponding grooves on the two steel columns to be opposite to each other when the two steel columns are vertically overlapped and placed.
The width of the groove is 3 mm.
The baking temperature of the welding wire is 300-350 ℃, and the baking duration is 2 h.
The welding wire is insulated for 100-150 ℃ and the duration of the insulation is 1-2 h.
The characteristic temperature was 0 ℃.
The butt welding connection method for the building supporting circular tube steel column further comprises the following steps: before welding by adopting the welding method of carbon oxide gas shielded welding, the welding wire is subjected to preheating treatment, so that the surface temperature of the welding wire reaches 100-150 ℃.
The butt weld is a closed annular shape around the outer peripheral surface of the steel column.
The invention has the beneficial effects that: by adopting the technical scheme provided by the invention, the welding wire is subjected to pretreatment such as baking, heat preservation and the like before welding, so that moisture contained in the welding wire can be fully evaporated, pores in a welding line formed after welding are prevented from being generated, cracks are prevented from being generated in the welding line, the mechanical property and strength of the welding line are improved, and the mechanical property, structural strength and bearing capacity of the whole welded steel column are further improved. In addition, the welding wire is subjected to preheating treatment before welding construction, the welding construction needs to be carried out under the condition that the ambient temperature is met, the corrosion of the welding wire caused by moisture in ambient air can be prevented, and the welding quality is ensured.
Drawings
FIG. 1 is a flow chart of the construction process of the present invention.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings, but the claimed protection scope is not limited thereto;
the invention provides a butt welding connection method for building support circular tube steel columns, which comprises the following steps of:
providing two steel columns and a plurality of welding wires, sequentially baking and insulating the welding wires, vertically superposing and placing the two steel columns at a position required by a user, and welding by adopting a carbon oxide gas shielded welding method when the ambient temperature reaches above a characteristic temperature, so that the welding wires are filled between the two steel columns after being melted and then are condensed to form a butt-joint welding line, and the two steel columns are connected into a whole. Preferably, the characteristic temperature is 0 ℃.
Further, the steel column is preferably made of steel with the trade name of WGJ510C 2. The welding wire is model number CJ 556N. In addition, flanges are arranged at the tail ends of the steel columns, and when the two steel columns are vertically overlapped and placed, the corresponding flanges on the two steel columns are opposite to each other and are connected together through a plurality of bolts. By adopting the technical scheme of the invention, when the two steel columns are connected in advance through the flange plate, the operation difficulty of operators can be further reduced, the butt joint dog steel column is kept straight, and the error is reduced.
In addition, the butt welding connection method of the building support circular tube steel column further comprises the following steps: and grinding grooves at the tail ends of the steel columns respectively, and enabling the corresponding grooves on the two steel columns to be opposite to each other when the two steel columns are vertically overlapped and placed. Preferably, the groove width is 3 mm.
Further, the baking temperature of the welding wire is 300-350 ℃, and the baking duration time is 2 hours. The welding wire is insulated for 100-150 ℃ and the duration of the insulation is 1-2 h.
9. The butt welding connection method for the building supporting circular tube steel column according to claim 1, wherein: the butt welding connection method for the building supporting circular tube steel column further comprises the following steps: before welding by adopting the welding method of carbon oxide gas shielded welding, the welding wire is subjected to preheating treatment, so that the surface temperature of the welding wire reaches 100-150 ℃. The butt weld is a closed annular shape around the outer peripheral surface of the steel column. By adopting the technical scheme of the invention and adopting a closed continuous welding mode, the sealing performance of the two connected steel columns is better, and the butt joint parts of the two steel columns are almost welded together, so that the overall mechanical performance and the bearing capacity of the steel column can be effectively improved.
By adopting the technical scheme provided by the invention, the welding wire is subjected to pretreatment such as baking, heat preservation and the like before welding, so that moisture contained in the welding wire can be fully evaporated, pores in a welding line formed after welding are prevented from being generated, cracks are prevented from being generated in the welding line, the mechanical property and strength of the welding line are improved, and the mechanical property, structural strength and bearing capacity of the whole welded steel column are further improved. In addition, the welding wire is subjected to preheating treatment before welding construction, the welding construction needs to be carried out under the condition that the ambient temperature is met, the corrosion of the welding wire caused by moisture in ambient air can be prevented, and the welding quality is ensured.
Claims (10)
1. A butt welding connection method for building supporting circular tube steel columns is characterized by comprising the following steps: the method comprises the following steps:
providing two steel columns and a plurality of welding wires, sequentially baking and insulating the welding wires, vertically superposing and placing the two steel columns at a position required by a user, and welding by adopting a carbon oxide gas shielded welding method when the ambient temperature reaches above a characteristic temperature, so that the welding wires are filled between the two steel columns after being melted and then condensed to form a butt-joint weld, and the two steel columns are connected into a whole.
2. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the welding wire is model CJ 556N.
3. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: and flanges are arranged at the tail ends of the steel columns, and when the two steel columns are vertically overlapped and placed, the corresponding flanges on the two steel columns are opposite to each other and are connected together by using a plurality of bolts.
4. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the butt welding connection method for the building supporting circular tube steel column further comprises the following steps: and grinding grooves at the tail ends of the steel columns respectively, and enabling the corresponding grooves on the two steel columns to be opposite to each other when the two steel columns are vertically overlapped and placed.
5. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 4, wherein: the groove width is 3 mm.
6. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the baking temperature of the welding wire is 300-350 ℃, and the baking duration time is 2 h.
7. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the welding wire is insulated for 100-150 ℃ and the insulation duration is 1-2 h.
8. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the characteristic temperature is 0 ℃.
9. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the butt welding connection method for the building supporting circular tube steel column further comprises the following steps: before welding by adopting a welding method of carbon oxide gas shielded welding, the welding wire is subjected to preheating treatment, so that the surface temperature of the welding wire reaches 100-150 ℃.
10. The butt welding connection method for the building supporting circular tube steel column as claimed in claim 1, wherein: the butt weld is a closed annular shape surrounding the outer peripheral surface of the steel column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010454998.8A CN111570977A (en) | 2020-05-26 | 2020-05-26 | Butt welding connection method for building supporting circular tube steel column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010454998.8A CN111570977A (en) | 2020-05-26 | 2020-05-26 | Butt welding connection method for building supporting circular tube steel column |
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| CN111570977A true CN111570977A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010454998.8A Pending CN111570977A (en) | 2020-05-26 | 2020-05-26 | Butt welding connection method for building supporting circular tube steel column |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081134A (en) * | 1992-06-30 | 1994-01-26 | 株式会社托阿茨 | A kind of method of shaped steel jam weld and device |
| CN1814387A (en) * | 2006-02-24 | 2006-08-09 | 中国有色金属工业第六冶金建设公司金属结构厂 | 12Cr1MoV alloy steel pipe welding method |
| CN105033417A (en) * | 2015-07-09 | 2015-11-11 | 安徽金阳金属结构工程有限公司 | X80 steel pipe welding process |
| CN105364276A (en) * | 2015-10-31 | 2016-03-02 | 江苏振光电力设备制造有限公司 | Welding machining technology of high-strength-steel steel pipe tower |
| CN105855671A (en) * | 2016-06-03 | 2016-08-17 | 合肥紫金钢管股份有限公司 | Butting process of large-diameter rolled steel pipe for building structure |
| CN110593412A (en) * | 2019-10-08 | 2019-12-20 | 西安建筑科技大学 | Detachable and replaceable steel reinforced concrete column-column connection structure and method based on flange connection |
-
2020
- 2020-05-26 CN CN202010454998.8A patent/CN111570977A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081134A (en) * | 1992-06-30 | 1994-01-26 | 株式会社托阿茨 | A kind of method of shaped steel jam weld and device |
| CN1814387A (en) * | 2006-02-24 | 2006-08-09 | 中国有色金属工业第六冶金建设公司金属结构厂 | 12Cr1MoV alloy steel pipe welding method |
| CN105033417A (en) * | 2015-07-09 | 2015-11-11 | 安徽金阳金属结构工程有限公司 | X80 steel pipe welding process |
| CN105364276A (en) * | 2015-10-31 | 2016-03-02 | 江苏振光电力设备制造有限公司 | Welding machining technology of high-strength-steel steel pipe tower |
| CN105855671A (en) * | 2016-06-03 | 2016-08-17 | 合肥紫金钢管股份有限公司 | Butting process of large-diameter rolled steel pipe for building structure |
| CN110593412A (en) * | 2019-10-08 | 2019-12-20 | 西安建筑科技大学 | Detachable and replaceable steel reinforced concrete column-column connection structure and method based on flange connection |
Non-Patent Citations (3)
| Title |
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| 严慧、金伟良: "《结构与地基新进展》", 30 September 2005, 杭州：浙江大学出版社 * |
| 刘云龙 等: "《焊工技师手册》", 30 April 2000, 北京：机械工业出版社 * |
| 宗培言: "《焊接结构制造技术手册》", 31 January 2012, 上海：上海科学技术出版社 * |
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Application publication date: 20200825 |
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