ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Nen’jiang No.1 Bridge has been used for 70 year, so fatigue, fracture and corrosiondominate the remaining life of this bridge. Obviously the designer did not take into consideration thefatigue problem at that time. In order to keep this bridge in service economically as long as possible,bridge owner decides to take measures to preserve its service safety. Thus the remaining fatigue lifeand fracture failure risk need to be evaluated. The analytical results according to the fracture mechanicbased concept show that the diagonal edge members U0L1 and U9L8 have the shortest remainingfatigue life, and some members have a potential risk of brittle failure. The fracture failure riskevaluation results show that the toughness of main truss member steel is lower than the coderequirement, and members such as U0L1 and U9L8 have brittle fracture failure risk in cold winter. Sothis bridge should be temporarily closed traffic in winter
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.347.359.pdf
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