Mixed Mode Fatigue Crack Propagation Mechanism of the Diaphragm Cutout Detail in Steel Bridge Deck
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Bibliographic Details
| Author(s): |
Li Yu
(The Second Nanjing Yangtze River Bridge Co., Ltd)
Hui Chen (Department of Bridge Engineering, College of Highways, Chang'an University, Xi’an, China) Chenhui Zhu (Department of Bridge Engineering, College of Highways, Chang''an University, Xi’an, CHINA) Yubo Mao (Department of Bridge Engineering, College of Highways, Chang''an University, Xi’an, CHINA) Chunsheng Wang (Department of Bridge Engineering, College of Highways, Chang''an University, Xi’an, CHINA) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 1969-1975 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/nanjing.2022.1969 | ||||
| Abstract: |
Based on the extended finite element method (XFEM), finite element model of a typical steel bridge deck was established to analyze the fatigue crack propagation of diaphragm cutout detail. It was considered the parameters of welding residual stress, vehicle load and initial crack in the fatigue mechanism analysis. Residual tensile stress in the cutout edge of the diaphragm of two types of cutout was calculated. Cutout with higher residual tensile stress provided the welding residual stress field for calculation of fatigue crack propagation. Under coupling action of vehicle load and welding residual field, the fatigue crack in diaphragm cutout edge was mixed mode crack of Modes I, II, dominated by Mode I. |
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| Keywords: |
fatigue crack steel deck XFEM welding residual stress crack growth simulation
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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