FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH
According to the characteristics of structure of the crane box girder and its complex stress condition,an equivalent crack approach based on fatigue test data is presented to estimate the fatigue life. The fatigue test data can be well in reflecting the effect of stress concentration on fatigue risk...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2018-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.01.034 |
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| author | LUO YouHong WU Xiao DING ZhengNan FENG XiaoHua |
| author_facet | LUO YouHong WU Xiao DING ZhengNan FENG XiaoHua |
| author_sort | LUO YouHong |
| collection | DOAJ |
| description | According to the characteristics of structure of the crane box girder and its complex stress condition,an equivalent crack approach based on fatigue test data is presented to estimate the fatigue life. The fatigue test data can be well in reflecting the effect of stress concentration on fatigue risk points. The stress concentration effects at the fatigue dangerous location can be approximately equivalent to having a crack in an unwelded plate. Using paris law calculate the equivalent crack propagation. By comparing estimation results with fatigue test results in the literature,the proposed method is effective and feasible to estimate the fatigue life under constant amplitude loading,but it needs to be further researched for estimation fatigue life under variable amplitude loading. |
| format | Article |
| id | doaj-art-4824c88386e34b33b1fb4f4fef154805 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-4824c88386e34b33b1fb4f4fef1548052025-01-15T02:32:45ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692018-01-014020020430600663FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACHLUO YouHongWU XiaoDING ZhengNanFENG XiaoHuaAccording to the characteristics of structure of the crane box girder and its complex stress condition,an equivalent crack approach based on fatigue test data is presented to estimate the fatigue life. The fatigue test data can be well in reflecting the effect of stress concentration on fatigue risk points. The stress concentration effects at the fatigue dangerous location can be approximately equivalent to having a crack in an unwelded plate. Using paris law calculate the equivalent crack propagation. By comparing estimation results with fatigue test results in the literature,the proposed method is effective and feasible to estimate the fatigue life under constant amplitude loading,but it needs to be further researched for estimation fatigue life under variable amplitude loading.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.01.034CraneBox girderEquivalent crackFatigue lifeEstimation |
| spellingShingle | LUO YouHong WU Xiao DING ZhengNan FENG XiaoHua FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH Jixie qiangdu Crane Box girder Equivalent crack Fatigue life Estimation |
| title | FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH |
| title_full | FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH |
| title_fullStr | FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH |
| title_full_unstemmed | FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH |
| title_short | FATIGUE LIFE PREDICTION OF BOX GIRDER OF BRIDGE BASED ON EQUIVALENT CRACK APPROACH |
| title_sort | fatigue life prediction of box girder of bridge based on equivalent crack approach |
| topic | Crane Box girder Equivalent crack Fatigue life Estimation |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.01.034 |
| work_keys_str_mv | AT luoyouhong fatiguelifepredictionofboxgirderofbridgebasedonequivalentcrackapproach AT wuxiao fatiguelifepredictionofboxgirderofbridgebasedonequivalentcrackapproach AT dingzhengnan fatiguelifepredictionofboxgirderofbridgebasedonequivalentcrackapproach AT fengxiaohua fatiguelifepredictionofboxgirderofbridgebasedonequivalentcrackapproach |