Share This Article:

New strategy for controlling structures collapse against earthquakes

Abstract Full-Text HTML XML Download Download as PDF (Size:540KB) PP. 667-676
DOI: 10.4236/ns.2012.428088    3,331 Downloads   6,139 Views   Citations


A control strategy for structures subjected to earthquake actions is investigated. The strategy is inspired from the human beings reaction when they are attack by earthquake excitation. Humans realize the earthquake excitation by the neurons, sent this information to the brain, a decision is taken there and by neuron system the decision is sent it back to the muscles for suitable action. In similar way the control strategy consists of monitoring the incoming signal, analyzing it and recognizing its dynamic characteristics, applying the control algorithm for the calculation of the required action, and, finally, applying this action. Thus, the way in which the structure is controlled, and the algorithm that is used, are based on the dynamic characteristics and the frequency content of the applied earthquake signal. The algorithm transforms the earthquake signal and structure into a complex plane and, depending on their relative positions, the equivalent forces that should be applied to the structure by the control devices, which are installed on the building, are calculated. From the numerical results it is shown that the above control procedure is efficient in reducing the response of building structures subjected to earthquake loading, with small amount of required control forces. The influence of time delay and saturation capacity is taken into account. Characteristic buildings controlled by pole placement algorithm and subjected to earthquake excitation are analyzed for a range of levels of time delay and saturation capacity of the control devices. The response reduction surfaces for the combined influence of time delay and force saturation of the controlled buildings are obtained. Conclusions regarding the choice of the control system and the desired properties of the control devices are drawn.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Pnevmatikos, N. (2012) New strategy for controlling structures collapse against earthquakes. Natural Science, 4, 667-676. doi: 10.4236/ns.2012.428088.


[1] Yao, J.T.P. (1972) Concepts of structural control. Journal of Structural Engineering, 98, 1567-1574.
[2] Yang, J.N., Kim, J.H. and Agrawal A.K. (2000) Resetting semi-active stiffness damper for seismic response control. Journal of Structural Engineering, 126, 1427-143. doi:10.1061/(ASCE)0733-9445(2000)126:12(1427)
[3] Yang, J. and Agrawal, A. (2002) Semi-active hybrid control systems for non-linear buildings against near-field earthquakes. Engineering Structures, 24, 271-280. doi:10.1016/S0141-0296(01)00094-3
[4] Yang, J.N. (1975) Application of optimal control theory to civil engineering structures. Journal of Engineering Mechanics Division, 101, 819-838.
[5] Yang, J.N., Wu, J.C. and Li, Z. (1996) Control of seismic excited buildings using active variable stiffness. Engineering Structures, 18, 589-596. doi:10.1016/0141-0296(95)00175-1
[6] Yang, J.N., Wu, J.C., Agrawal, A.K. and Hsu, S.Y. (1995) Sliding mode control for non linear and hysteretic structures. Journal of Engineering Mechanics, 121, 1330-1339. doi:10.1061/(ASCE)0733-9399(1995)121:12(1330)
[7] Yang, J.N., Wu, J.C., Agrawal, A.K. and Hsu, S.Y. (1995) Sliding mode control of seismically excited linear structures. Journal of Engineering Mechanics, 121, 1386-1390. doi:10.1061/(ASCE)0733-9399(1995)121:12(1386)
[8] Soong, T.T. (1990) Active structural control: Theory and practice. London/New York: Longman Scientific & Technical/Wiley.
[9] Housner, G.W., Bergman, L.A., Caughey, T.K., Chassiakos, A.G., Claus, R.O., Masri, S.F., Skelton, R.E., Soong, T.T., Spencer, B.F. Jr. and Yao, J.T.P. (1997) Structural control: Past, present and future. Journal of Engineering Mechanics, 123, 897-971. doi:10.1061/(ASCE)0733-9399(1997)123:9(897)
[10] Spencer, B.F., Dyke, S.J., Sain, M.K. and Carlson, J.D. (1997) Phenomenological model for magnetorheological dampers. Journal of Engineering Mechanics, 123, 230-238. doi:10.1061/(ASCE)0733-9399(1997)123:3(230)
[11] Spencer, B.F. Jr. and Nagarajaiah, S. (2003) State of the art of structural control. Journal of Structural Engineering, 239, 845-856. doi:10.1061/(ASCE)0733-9445(2003)129:7(845)
[12] Symans, M.D. and Constantinou, M.C. (1997) Seismic testing of a building structure with semi-active fluid damper control system. Earthquake Engineering and Structural Dynamics, 26, 759-777. doi:10.1002/(SICI)1096-9845(199707)26:7<759::AID-EQE675>3.0.CO;2-E
[13] Symans, M.D. and Constantinou, M.C. (1999) Semi-active control systems for seismic protection of structures: A state-of-the-art review. Engineering Structures, 21, 469-487. doi:10.1016/S0141-0296(97)00225-3
[14] Kobori, T. (1990) Experimental study on active variable stiffness system-active seismic response controlled structure. Proceedings of 4th World Congress Council on Tall Buildings and Urban Habitat, Hong Kong, 5-9 November 1990, 561-572.
[15] Kobori, T. and Kamagata, S. (1992) Dynamic intelligent building—Active seismic response control. Intelligent Structures, 2, 279-274.
[16] Kurata, N. and Kobori, T. (2003) Reliability of applied semi-active structural control system. Journal of Structural Engineering, 129, 914-921. doi:10.1061/(ASCE)0733-9445(2003)129:7(914)
[17] Pnevmatikos, N.G. and Gantes, C.J. (2010) Control strategy for mitigating the response of structures subjected to earthquake actions. Engineering Structures, 32, 3616-3628. doi:10.1016/j.engstruct.2010.08.006

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.