JPS5641094A - Repairment method of fatigue and crack and the like for steel construction - Google Patents
Repairment method of fatigue and crack and the like for steel constructionInfo
- Publication number
- JPS5641094A JPS5641094A JP11892979A JP11892979A JPS5641094A JP S5641094 A JPS5641094 A JP S5641094A JP 11892979 A JP11892979 A JP 11892979A JP 11892979 A JP11892979 A JP 11892979A JP S5641094 A JPS5641094 A JP S5641094A
- Authority
- JP
- Japan
- Prior art keywords
- crack
- fatigue
- steel construction
- wedge
- compulsively
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
PURPOSE: To prevent the reproduction of fatigue and crack and their advancement for the repaired welding zone, by introducing the compression residual stress to the repaired welding zone, through the repairment and welding the end at least of the fatigue and crack or notch generated in the steel construction, in the state where these have been expanded compulsively.
CONSTITUTION: When fatigue and crack 1 is generated to the steel construction, the both ends of the crack 1 are machined with a drill to form the stop hole 2 having the smooth surface. Next, around almost the center 4 of the crack 1, the wedge member at the tip of the wedge device is inserted to open the crack 1 compulsively through the axial force W. Further, in the state where the crack 1 has been opened compulsively, welding is started from the end of the hole 2 and the crack 1 is burried with the deposited metal 3 by excluding the wedge insertion part. After cooling of the metal 3, the wedge is removed and the axial force W is released, then large residual stress is introduced to the metal 3. After that, the part where the wedge member is inserted is welded and it is burried with the deposited metal 3a.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11892979A JPS6020117B2 (en) | 1979-09-14 | 1979-09-14 | Repair method for fatigue cracks, etc. in steel structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11892979A JPS6020117B2 (en) | 1979-09-14 | 1979-09-14 | Repair method for fatigue cracks, etc. in steel structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5641094A true JPS5641094A (en) | 1981-04-17 |
| JPS6020117B2 JPS6020117B2 (en) | 1985-05-20 |
Family
ID=14748695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11892979A Expired JPS6020117B2 (en) | 1979-09-14 | 1979-09-14 | Repair method for fatigue cracks, etc. in steel structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6020117B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962739A (en) * | 2014-04-23 | 2014-08-06 | 哈尔滨飞机工业集团有限责任公司 | Method for welding grey cast iron cracks |
| JP5883528B1 (en) * | 2015-04-07 | 2016-03-15 | 株式会社Ihi | Crack growth control method and crack growth control structure |
-
1979
- 1979-09-14 JP JP11892979A patent/JPS6020117B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962739A (en) * | 2014-04-23 | 2014-08-06 | 哈尔滨飞机工业集团有限责任公司 | Method for welding grey cast iron cracks |
| JP5883528B1 (en) * | 2015-04-07 | 2016-03-15 | 株式会社Ihi | Crack growth control method and crack growth control structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6020117B2 (en) | 1985-05-20 |
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