
Proceedings Paper
Monitoring a post-tensioned concrete box girder bridge with cracksFormat | Member Price | Non-Member Price |
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Paper Abstract
It is a rare opportunity to monitor a damaged structure due to extensive cracking. The progress of cracks is of primary
concern for maintenance. However, it is difficult to distinguish the extension due to structural degradation from
temperature to traffic. A Structural Health Monitoring System (SHMS) was installed in a PC box-girder bridge in order
to monitor the crack development. This SHMS has continuously worked for 7 years. The temperature and traffic load
patterns were deduced from raw data by using correlation techniques. Although, crack opening displacement (COD) due
to temperature of daily and yearly seasonal cycles is much larger than the COD due to trucks, the overall fatigue effect
due to traffic is much larger than the temperature effect because of its sheer numbers, about 3000 per day. Overweight
trucks are usually allowed with permit in major interstate highway. However, frequency change due to local fatigue of
crack is negligible. This research can be helpful to explain why frequency is insensitive to local damage.
Paper Details
Date Published: 8 April 2009
PDF: 13 pages
Proc. SPIE 7294, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009, 72940P (8 April 2009); doi: 10.1117/12.815810
Published in SPIE Proceedings Vol. 7294:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009
H. Felix Wu; Aaron A. Diaz; Peter J. Shull; Dietmar W. Vogel, Editor(s)
PDF: 13 pages
Proc. SPIE 7294, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009, 72940P (8 April 2009); doi: 10.1117/12.815810
Show Author Affiliations
Jinsuk Yim, Univ. of Illinois at Chicago (United States)
Yinghong Cao, Northeastern Univ. (United States)
Yinghong Cao, Northeastern Univ. (United States)
Ming L. Wang, Northeastern Univ. (United States)
Published in SPIE Proceedings Vol. 7294:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009
H. Felix Wu; Aaron A. Diaz; Peter J. Shull; Dietmar W. Vogel, Editor(s)
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