Behavioral factor of Pall and Rotational dampers under far field and near field records

Document Type : Original Article

Authors

1 Professor, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

2 Engineering faculty,Ferdowsi university of Mashhad.Mashhad.Iran

Abstract

Nowadays, in order to reduce the damages of structures during earthquakes, the method of reducing earthquake forces with control tools is used. In this study, the effect of two types of Pall and Rotational frictional dampers in the same bracing frames on behavior factor to minimize the design force has been analyzed.
The structures were first modeled and the designed sections for beam, column and bracing were taken and then nonlinear time history analysis for seven near field earthquakes and eight far field earthquakes has been used and it has been compared with nonlinear static analysis. In this study, a total of 9 nonlinear static analyses and 135 dynamic analysis of time history have been used. This behavior factor was 5.0 for the structure equipped with Pall damper and 4.5 for the structure equipped with Rotational damper. This indicates 42% increase in behavior factor for structures equipped with Pall damper and 28% increase in this coefficient for structures equipped with Rotational damper, which leads to less seismic responses, more resistant in structure and ultimately more economical design. The results also show an increase in behavior factor in lower height structures than high-rise structures.
On the other hand, the results show an increase in behavior factor by 12% and 5% in Pall damper and Rotational structures under near field earthquakes compared to the far field. The behaviour factor for structure equipped with Pall damper subjected to near and far acceleration time history is equal to 5 and 4.5, respectively. This factor is calculated to be 4.5 and 4.25 for Rotational damper for near and far records, correspondingly. As a result, the use of Pall dampers in areas close to active faults is suggested.

Keywords

Main Subjects


[1] Pasquin, C., Leboeuf, N., Pall, R. T., & Pall, A. (2004, August). Friction dampers for seismic rehabilitation of Eaton’s building, Montreal. In 13th world conference on earthquake engineering (pp. 1-2).
[2] Pall, A. S., & Marsh, C. (1982). Response of friction damped braced frames. Journal of Structural Engineering108(9), 1313-1323.
[3] Filiatrault, A., & Cherry, S. (1986). Seismic tests of friction damped steel frames. In Dynamic Response of Structures (pp. 138-145). ASCE.
[4] Lee, S. H., Park, J. H., Lee, S. K., & Min, K. W. (2008). Allocation and slip load of friction dampers for a seismically excited building structure based on storey shear force distribution. Engineering Structures30(4), 930-940.
[5] Apostolakis, G., & Dargush, G. F. (2010). Optimal seismic design of momentā€resisting steel frames with hysteretic passive devices. Earthquake engineering & structural dynamics39(4), 355-376.
[6] Sarjou, P. H., & Shabakhty, N. (2017). Effect of the improved pall friction damper on the seismic response of steel frames. Engineering, Technology & Applied Science Research7(4), 1833-1837.
[7] Simone, S. (2020). Simulation, experimentation and identification of frictional dampers: application to a satellite propeller (Doctoral dissertation, Politecnico di Torino).
[8] Mualla, I. H., & Belev, B. (2002). Performance of steel frames with a new friction damper device under earthquake excitation. Engineering Structures24(3), 365-371.
[9] Gholizad, A., & Nekoo, M. M. (2018). Seismic Performance of a Novel Configuration of Rotational Friction Damper in X Bracings.
[10] Tusset, A. M., Janzen, F. C., Piccirillo, V., Rocha, R. T., Balthazar, J. M., & Litak, G. (2018). On nonlinear dynamics of a parametrically excited pendulum using both active control and passive rotational (MR) damper. Journal of Vibration and Control24(9), 1587-1599.
 [11] Amini, A., Ekici, Ö., & Yakut, K. (2020). Experimental Study of Regenerative Rotational Damper in Low Frequencies. International Journal of Automotive Technology21(1), 83-90.
[12] Suk, R., & Altintaș, G. (2020). Behavior of multidirectional friction dampers. Journal of Vibration and Control26(21-22), 1969-1979.
[13] Ghorbani, H. R., & Rofooei, F. R. (2020). A novel double slip loads friction damper to control the seismic response of structures. Engineering Structures225, 111273
[14] Meyer, N., & Seifried, R. (2020). Numerical and experimental investigations in the damping behavior of particle dampers attached to a vibrating structure. Computers & structures238, 106281.
[15] Spencer Jr, B. F., & Soong, T. T. (1999, August). New applications and development of active, semi-active and hybrid control techniques for seismic and non-seismic vibration in the USA. In Proceedings of international post-SMiRT conference seminar on seismic isolation, passive energy dissipation and active control of vibration of structures (pp. 23-25). Cheju, Korea.
[16] Pall, A. (2004, August). Performance-based design using pall friction dampers-an economical design solution. In 13th World Conference on Earthquake Engineering, Vancouver, BC, Canada (Vol. 70, No. 7, pp. 576-571).
[17] Mualla, I. H. (2000). Experimental & computational evaluation of a new friction damper device (Doctoral dissertation, Ph. D. Thesis, Dept. of Structural Engineering and Materials, Technical University of Denmark).
[18]Computers and Structures, inc, (1999), "Etabs Nonlinear Version 50 8.5.0",1995 University Ave. Berkeley,CA., California, USA, 94704.
[19] Choubisa, J., Chakrabarti, P., Poddar, S., Audichya, R., & Bhatt, R. M. (2021). Structural behavior of steel structures on the basis of computer simulation software. Materials Today: Proceedings.
[20]  ATC, Structural Response Modi_cation Factors : ATC-19, Applied Technology Council, Redwood City, California,pp. 5-32 (1995).
[21] ATC, A Critical Review of Current Approaches to Earthquake Resistant Design,ATC-34, Applied Technology Council, Redwood City, California (1995)
[22] Whittaker, A. S., Bertero, V. V., Thompson, C. L., & Alonso, L. J. (1991). Seismic testing of steel plate energy dissipation devices. Earthquake Spectra7(4), 563-604.
[23] Martinez-Rodrigo, M., & Romero, M. L. (2003). An optimum retrofit strategy for moment resisting frames with nonlinear viscous dampers for seismic applications. Engineering Structures25(7), 913-925.