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(AMDs) and the proposed control strategy for seismic response mitigation of the 1KB has been
conducted. Simulation results show that installation of AMDs on top of the bridge towers and at the
middle of main spans of the TKB can achieve good control effectiveness both in longitudinal and
lateral directions. Both the displacement and internal force responses at the bridge towers and deck can
be significantly reduced by using only limited dominant modes in control design, especially for the
central tower. The fluctuation of cable tension forces can also be reduced remarkably by implementing
the AMDs.
ACKNOWLEDGEMENT
The work presented in this paper was supported by a grant from The Hong Kong Polytechnic
University through the Area of Strategic Development Programme (Research Centre for Urban Hazard
Mitigation). This support is gratefully acknowledged.
References
Bergermann, R. and Schlaich, M. (1996). Ting Kau Bridge, Hong Kong. Structural Engineering
International 6, 152-154.
Dyke, S.J., Turan, G., Caicedo, J.M., Bergman, L.A. and Hague, S. (2000). Benchmark control
problem for seismic response of cable-stayed bridges. Research Report, Washington University in St.
Louis (http://wusceel.cive.wustl.edu/quake/), 42p.
Miyata, T., Yamada, H. and Paulet-Crainiceanu, F. (1996). Active structural control for cable bridges
under earthquake loads. Proceedings of the 3rd International Conference on Motion and Vibration
Control, Chiba, Japan, 2: 53-58.
Ni, Y.Q., Spencer Jr., B.F. and Ko, J.M. (200la). Active/semiactive seismic response control of cablesupported
bridges: current research status and key issues. Earthquake Engineering Frontiers in the
New Millennium, B.F. Spencer Jr. and Y.X. Hu (eds.), Rotterdam, Netherlands, 299-304.
Ni, Y.Q., Spencer Jr., B.F. and Ko, J.M. (2001b). Feasibility of active control of cable-stayed bridges:
an insight into Ting Kau Bridge. Smart Structures and Materials 2001: Smart Systems for Bridges,
Structures, and Highways, S.C. Liu (ed.), SPIE Vol. 4330, 387-398.
Paulet-Crainiceanu, F. (1998). Seismic response control of cable-stayed bridges. Proceedings of the
2nd World Conference on Structural Control, Kyoto, Japan, 2: 959-964.
Schemmann, A.G. and Smith, H.A. (1998a). Vibration control of cable-stayed bridges-part 1:
modeling issues. Earthquake Engineering and Structural Dynamics 27, 811-824.
Schernrnann, A.G. and Smith, H.A. (1998b). Vibration control of cable-stayed bridges-part 2: control
analyses. Earthquake Engineering and Structural Dynamics 27, 825-843.
Shoureshi, R.A. and Bell, MJ. (1996). Vibration control of cable-stayed bridges: control system
development and experimental results. Engineering Mechanics: Proceedings of the 11th Conference,
Y.K. Lin and T.C. Su (eds.), ASCE, New York, 2: 902-905.
Stengel, R.F. (1986). Stochastic Optimal Control, Wiley, New York.
Yang, J.N. and Giannopolous, F. (1979a). Active control and stability of cable-stayed bridge. ASCE
Journal of the Engineering Mechanics Division 105, 677-694.
Yang, J.N. and Giannopolous, F. (1979b). Active control of two-cable-stayed bridge. ASCE Journal of
the Engineering Mechanics Division 105, 795-810.