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Structural
Health Monitoring and Damage Detection Summary
of Activities Structural health monitoring and damage detection
refers to the use of in-situ, non-destructive sensing and analysis of
structural characteristics and responses for the purpose of detecting changes
that may indicate damage or degradation. With the advance in sensor systems,
data acquisition, data communication and computational methodologies,
instrumentation-based monitoring has been a widely accepted technology to
monitor and diagnose structural health and conditions for civil
infrastructure systems. The Centre has undertaken a lot of research and
consultancy projects related to performance-based structural health
monitoring of tall buildings and long-span bridges, moving force
identification of bridges, fatigue assessment of large civil structures,
vibration-based damage detection of large-scale bridges, post-earthquake
damage evaluation of high-rise buildings, and health monitoring system-based
bridge rating system. Technological Services provided include the following:
Representative
Projects
Establishment
of a test-bed for structural health monitoring of long suspension bridges
Establishment
of bridge rating system for Tsing Ma Bridge
Development
of structural health monitoring system for Guangzhou New TV Tower Major
Facilities
Select
Publications 1.
Chan, T.H.T.,
Law, S.S. and Yung, T.H. (2000) “Moving force identification using an
existing prestressed concrete bridge”, Engineering Structures, 22(10): 1261-1270. 2.
Chan, T.H.T.,
Li, Z.X. and Ko, J.M. (2001) “Fatigue analysis and life prediction of
bridge with health monitoring data - Part II: application”, International Journal of Fatigue,
23(1): 55-64. 3.
Chan, T.H.T.,
Yu, L., Tam, H.Y., Ni, Y.Q., Liu, S.Y., Chung, W.H. and Cheng, L.K. (2006),
“Fiber Bragg grating sensors for structural health monitoring of Tsing
Ma Bridge: background and experimental observation”, Engineering Structures, 28(5), 648-659. 4.
Chen, B. and
Xu, Y.L. (2007) “A new damage index for detecting sudden change of
structural stiffness”, Structural
Engineering and Mechanics, 26(3): 315-341. 5.
Hua, X.G., Ni,
Y.Q., Ko, J.M. and Wong, K.Y. (2007) “Modeling of temperature-frequency
correlation using combined principal component analysis and support vector
regression technique”, Journal of
Computing in Civil Engineering, ASCE, 21(2): 122-135. 6.
Ko, J.M., Sun,
Z.G. and Ni, Y.Q. (2002) “Multi-stage identification scheme for
detecting damage in cable-stayed 7.
Ko, J.M. and
Ni, Y.Q. (2005) “Technology developments in structural health
monitoring of large-scale bridges”, Engineering
Structures, 27(12):
1715-1725. 8.
Lam, H.F., Ko,
J.M. and Wong, C.W. (1998), “Localization of damaged structural
connections based on experimental modal and sensitivity analysis”, Journal of Sound and Vibration,
210(1): 91-115. 9.
Law, S.S., Shi,
Z.Y. and Zhang, L.M. (1998) “Structural damage detection from
incomplete and noisy modal test data”, Journal of Engineering Mechanics, ASCE, 124(11): 1280-1288. 10.
Law, S.S.,
Chan, T.H.T., Zhu, X.Q. and 11.
Ni, Y.Q., Hua,
X.G., Wong, K.Y. and Ko, J.M. (2007) “Assessment of bridge expansion joints using
long-term displacement and temperature measurement”, Journal of Performance of Constructed Facilities,
ASCE, 21(2): 143-151. 12.
Ni, Y.Q., Zhou,
H.F., Chan, K.C. and Ko, J.M. (2008) “Modal flexibility analysis of
cable-stayed 13.
Ni, Y.Q., Wang,
B.S. and Ko, J.M. (2002) “Constructing input vectors to neural networks for structural
damage identification”, Smart
Materials and Structures, 11(6):
825-833. 14.
Ni, Y.Q., Zhou,
X.T. and Ko, J.M. (2006) “Experimental investigation of seismic damage
identification using PCA-compressed frequency response functions and neural
networks”, Journal of Sound and Vibration, 290(1-2): 242-263. 15.
Xu, Y.L. and
Chen, J. (2004) “Structural damage detection using empirical modes
decomposition: experimental investigation”, Journal of Engineering Mechanics, ASCE, 130(11): 1279-1288. 16.
Xu, Y.L. and
Zhao, X. (2006) “Finite element-based force identification of sliding
support systems-Part II: numerical Investigation”, Journal of Finite Element in Analysis and Design, 42(4): 249-282.
17.
Zhao, X., Xu,
Y.L., Chen, J. and Li, J. (2005) “Identification method for multi-story
buildings with unknown ground motion: experimental investigation”, Engineering Structures, 27(8):
1234-1247. 18.
Zhao, X. and
Xu, Y.L. (2006) “Finite element-based force identification of sliding
support systems-Part I: theory”, Journal
of Finite Element in Analysis and Design, 42(4): 229-248. Contact
Information of the contact persons Prof. Jan-Ming Ko Fax: + 852 - 2362 2574 Dr. Yi-Qing Ni Fax: + 852 – 2334 6389 Research Centre for Urban Hazards Mitigation |
