Browse > Article
http://dx.doi.org/10.12989/sem.2012.41.1.139

Time-dependent effects on dynamic properties of cable-stayed bridges  

Au, Francis T.K. (Department of Civil Engineering, The University of Hong Kong)
Si, X.T. (Department of Civil Engineering, The University of Hong Kong)
Publication Information
Structural Engineering and Mechanics / v.41, no.1, 2012 , pp. 139-155 More about this Journal
Abstract
Structural health monitoring systems are often installed on bridges to provide assessments of the need for structural maintenance and repair. Damage or deterioration may be detected by observation of changes in bridge characteristics evaluated from measured structural responses. However, construction materials such as concrete and steel cables exhibit certain time-dependent behaviour, which also results in changes in structural characteristics. If these are not accounted for properly, false alarms may arise. This paper proposes a systematic and efficient method to study the time-dependent effects on the dynamic properties of cable-stayed bridges. After establishing the finite element model of a cable-stayed bridge taking into account geometric nonlinearities and time-dependent behaviour, long-term time-dependent analysis is carried out by time integration. Then the dynamic properties of the bridge after a certain period can be obtained. The effects of time-dependent behaviour of construction materials on the dynamic properties of typical cable-stayed bridges are investigated in detail.
Keywords
cable-stayed bridges; concrete creep; geometric nonlinearities; structural health monitoring systems; time-dependent behaviour;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 Aalami, B.O. (1998), "Time-dependent analysis of concrete structures", Prog. Struct. Eng. Mater., 1(4), 384-391.   DOI
2 ACI Committee 209 (1997), Prediction of creep, shrinkage and temperature effects in concrete structures, American Concrete Institution.
3 Au, F.T.K., Cheng, Y.S., Cheung, Y.K. and Zheng, D.Y. (2001), "On the determination of natural frequencies and mode shapes of cable-stayed bridges", Appl. Math. Model., 25, 1099-1115.   DOI
4 Au, F.T.K., Liu, C.H. and Lee, P.K.K. (2009), "Creep and shrinkage analysis of reinforced concrete frames by history-adjusted and shrinkage-adjusted elasticity moduli", Struct. Des. Tall Spec. Build., 18(1), 13-35.   DOI
5 Au, F.T.K. and Si, X.T. (2009), Time-dependent analysis of frames taking into account creep, shrinkage and cable relaxation, 7th International Conference on Tall Buildings Hong Kong, Research Publishing, 649-658.
6 Au, F.T.K. and Si, X.T. (2011), "Accurate time-dependent analysis of concrete bridges considering concrete creep, concrete shrinkage and cable relaxation", Eng. Struct., 33(1), 118-126.   DOI
7 Brooks, J.J. (2005), "30-year creep and shrinkage of concrete", Mag. Concrete Res., 57(9), 545-556.   DOI
8 Doebling, S.W., Farrar, C.R., Prime, M.B. and Shevitz, D.W. (1996), "Damage Identification and health monitoring of strutural and Mechanical systems from changes in their dynamic characteristics: a literature review", Technical Report, DOI: 10.2172/249299.
9 Elbadry, M.M. and Ghali, A. (2001), "Analysis of time-dependent effects in concrete structures using conventional linear computer programs", Can. J. Civil Eng., 28(2), 190-200.   DOI
10 Ghali, A., Favre, R. and Elbadry, M.M. (2002), Concrete Structures: Stresses and Deformations, 3rd Edition, Spon Press, London.
11 Kim, C.W., Kawatani, M., Ozaki, R. and Makihata, N. (2011), "Recovering missing data transmitted from a wireless sensor node for vibration-based bridge health monitoring", Struct. Eng. Mech., 38(4), 417-428.   DOI
12 Kmet, S., Tomko, M. and Brda, J. (2011), "Time-dependent analysis of cable trusses Part II. Simulation-based reliability assessment", Struct. Eng. Mech., 38(2), 171-193.   DOI
13 Liu, T., Li, A.Q., Ding, Y.L. and Zhao, D.L. (2009), "Study of the structural damage identification method based on multi-mode information fusion", Struct. Eng. Mech., 31(3), 333-347.   DOI
14 Ma, Y.S., Wang, Y.F. and Mao, Z.K. (2011), "Creep effects on dynamic behavior of concrete filled steel tube arch bridge", Struct. Eng. Mech., 37(3), 321-330.   DOI
15 Magura, D.D., Sozen, M.A. and Siess, C.P. (1964), "A study of stress relaxation in prestressing reinforcement", PCI J, 9(2), 13-53.   DOI
16 McGuire, W., Gallagher, R.H. and Ziemian, R.D. (2002), Matrix structural analysis, John Wiley, New York.
17 Neville, A.M. (2004), Properties of Concrete, 4th Edition, Prentice Hall, London.
18 Sapountzakis, E.J. and Katsikadelis, J.T. (2003), "Creep and shrinkage effect on the dynamics of reinforced concrete slab-and-beam structures", J. Sound Vib., 260(3), 403-416.   DOI
19 Zhang, J., Xu, Y.L., Xia, Y. and Li, J. (2008), "A new statistical moment-based structural damage detection method", Struct. Eng. Mech., 30(4), 445-466.   DOI