Active Tendons for Seismic Control of Buildings

Authors: S. M. Nigdeli, M. H. Boduroglu

Abstract:

In this study, active tendons with Proportional Integral Derivation type controllers were applied to a SDOF and a MDOF building model. Physical models of buildings were constituted with virtual springs, dampers and rigid masses. After that, equations of motion of all degrees of freedoms were obtained. Matlab Simulink was utilized to obtain the block diagrams for these equations of motion. Parameters for controller actions were found by using a trial method. After earthquake acceleration data were applied to the systems, building characteristics such as displacements, velocities, accelerations and transfer functions were analyzed for all degrees of freedoms. Comparisons on displacement vs. time, velocity vs. time, acceleration vs. time and transfer function (Db) vs. frequency (Hz) were made for uncontrolled and controlled buildings. The results show that the method seems feasible.

Keywords: Active Tendons, Proportional Integral DerivationType Controllers, SDOF, MDOF, Earthquake, Building.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328512

References:

[1] L. L. Chung, A. M. Reinhorn, T. T. Soong, "Experiments on Active Control of Seismic Structures," Journal of Engineering Mechanics, vol. 114, pp 241-25, 1988.
[2] L. L. Chung, R. C. Lin, A. M. Reinhorn, T. T. Soong, "Experimental Study of Active Control for MDOF Seismic Structures," Journal of Engineering Mechanics, vol. 115, pp 1609-1627, 1989.
[3] K. De Cock, B. De Moor, W. Minten, W. Van Brempt, H. Verrelst, A Tutorial on PID-control. Katholieke Universiteit Leuren Department of Electrical Engineering ESAT-SISTA /TR, 1997-08, 1997.
[4] S M. Nigdeli, Control of Structures with Active Tendons. M. H. Boduro─ƒlu, thesis supervisor. ─░stanbul Technical University, Institute of science, M.Sc. thesis, 2007.
[5] H. Sedarat, R. Kosut., "Active Control in Structures," in 13th ASCE Engineering Mechanics Division Conference, Baltimore, 1999.
[6] www.deprem.gov.tr. General Directorate of Disaster Affairs, Earthquake Research Department, Turkey.