Experimental Study of Shear Fatigue Strength for theOrthotropic Deck Diaphragm Arc Transition
[1]LV Peng-min,SONG Nian-b,Ll Da-tao.Experimental Study of Shear Fatigue Strength for theOrthotropic Deck Diaphragm Arc Transition[J].Journal of Zhengzhou University (Engineering Science),2015,36(02):62-66.[doi:10.3969/ j. issn.1671 -6833.2015.02.014]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 02
Page number:
62-66
Column:
Public date:
2015-04-30
- Title:
- Experimental Study of Shear Fatigue Strength for theOrthotropic Deck Diaphragm Arc Transition
- Keywords:
- orthotropic steel bridge ; diaphragm arc transition; shear fatigue failure; fatigue test; finite ele-ment analysis; stress test
- CLC:
- U443.3
- DOI:
- 10.3969/ j. issn.1671 -6833.2015.02.014
- Abstract:
- In order to study the fatigue characteristics on the diaphragm arc transition for orthotropic bridgedeck,Jiujiang Yangtze River bridge was taken as an example,and the fatigue test specimens of the diaphragmand U rib local structural detail were made.Experimental results showed that 8 samples fatigue crack occurredin the diaphragm with U rib welds in 13 samples,and 5 samples fatigue crack occurred in the diaphragm aretransitional area,which illustrated that the diaphragm arc transitional area is one of the dangerous places of thefatigue failure. Finite element analysis and stress tests all indicated that this region is in the compressive stressstate,but the shear stress is very large,and the fatigue failure belongs to shear fatigue failure.Comparing theexperimental data with European standard Eurocode3,we can find it meets the T -N curve equation of the al-lowable shear stress amplitude for 100 MPa. The results of this study can provide reference for the strength de-sign and life assessment on the orthotropic deck structure details.
- References:
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