Active Control of Structures Using Active Tendon Subjected to Near Field Earthquakes

Subject Areas : Analysis of Structure and Earthquake

Ahmad maleki ¹ , rasool khodayari ² , hosein yousefpour ³

1 - استادیار واحد مراغه
2 -
3 - مربی واحد مراغه

Received: 2016-09-10 Accepted : 2016-11-23 Published : 2016-11-21

Keywords: OpenSees, Target displacement, Active Control, Active Tendon, Near field earthquake, Frequency Content,

Abstract :

This paper studies on active control of structures subjected to near field earthquakes. In order to evaluation of effects of earthquakes with different frequencies three steel structures of 4, 8 and 15 floors with different natural period have been desined using ETABS software based on allowable stress method then opensees software have been used for three dimentional modeling of structures. Considering the impact and frequency content complexity of new field earthquakes, these structures subseetes to new field earthquakes. The different softwares have been used to verify of structures modelling. In order to evaluation of frequency content of earthquake, all of records scaled to 0.6 g then applied to structures. Different dynamic analysis conducted using eleven near field earthquake records and then the results compared to non-controled model to indicate the effect of active tendons.

References:

1.Soong،T.T.،(1990)،Active Structural Control، Theory and practice، John Willey & Sons،Inc

2.Abdel-Rohman M, Leipholz HH. Active control of tall buildings. J Struct Eng1983;109:628–45.

3. Yang JN, Samali B. Control of tall buildings in along-wind motion. J Struct Eng1983;109:50–68.

4. Chung LL et al. Experiments on active control of seismic structures. J EngMech 1988;114:241–56.

5. Warnitchai P et al. An experimental study on active tendon control of cablestayedbridges. Earthquake Eng Struct Dynam 1993;22:93–111.

6. Okubo H et al. Tendon control system for active shape control of flexiblespace structures. J Intell Mater Syst Struct 1996;7:470–5.

7. Minsili LS et al. An active vibration control method of bridge structures by the linearization of feedback gain matrix. Botswana J Technol 2009;18.

8. Lin C-C et al. Active control of irregular buildings considering soil-structureinteraction effects. Soil Dynam Earthquake Eng 2010;30:98–109.

9. Nigdeli .S. M , Boguroglu. M. H, Active tendon for seismic control of buildings, (2010), International journal of civil, environmental, structural construction and architectural engineering.

10.Nigdeli .S. M , Boguroglu. M. H, Active tendon control of torsionally irregular structures under near fault ground motion excitation, (2013), computer aided civil and infrastructure engineering.

11. "EC3. Design of Steel Structures: Part I-Genaral Rules and Rules for Buildings", (1994).s.l. : Euro code edited draft. Vol. 1.

12.SilviaMazzoni, Frank McKenna, Michael H.Scott, Gregory L. Fenves,et al, (2006) , "OpenSees Command Language Manual".

13. Chopra, Anil K. (2007), "Dynamics of Structures Theory and Applications to Earthquake Engineering". Third Edition.s.l. : Prentice Hall.