The Effect of Frame Geometry on the Seismic Response of Self-Centering Concentrically- Braced Frames
Conventional concentrically-braced frame (CBF)
systems have limited drift capacity before brace buckling and related
damage leads to deterioration in strength and stiffness. Self-centering
concentrically-braced frame (SC-CBF) systems have been developed
to increase drift capacity prior to initiation of damage and minimize
residual drift. SC-CBFs differ from conventional CBFs in that the
SC-CBF columns are designed to uplift from the foundation at a
specified level of lateral loading, initiating a rigid-body rotation
(rocking) of the frame. Vertically-aligned post-tensioning bars resist
uplift and provide a restoring force to return the SC-CBF columns to
the foundation (self-centering the system). This paper presents a
parametric study of different prototype buildings using SC-CBFs.
The bay widths of the SC-CBFs have been varied in these buildings
to study different geometries. Nonlinear numerical analyses of the
different SC-CBFs are presented to illustrate the effect of frame
geometry on the behavior and dynamic response of the SC-CBF
system.
[1] Fahnestock, L.A.; Sause, R.; &Ricles, J.M. (2007a). "Seismic Response
and Performance of Buckling-Restrained Braced Frames," ASCE
Journal of Structural Engineering 133(9): 1195-1204.
[2] Fahnestock, L.A.; Sause, R.; &Ricles, J.M. (2007b). "Experimental
Evaluation of a Large-Scale Buckling-Restrained Braced Frame," ASCE
Journal of Structural Engineering 133(9): 1205-1214.
[3] Roke, D; Sause, R.; Ricles, J.M.; Seo, C.-Y.; & Lee, K.S. (2006). "Self-
Centering Sesimic-Resistant Steel Concentrically-Braced Frames,"
Proceedings of the 8th U.S. National Conference on Earthquake
Engineering, EERI, San Francisco, USA.
[4] Roke, D; Sause, R.; Ricles, J.M.; & Chancellor, N.B. (2008). "Design
Concepts for Damage-Free Sesimic-Resistant Self-Centering Steel
Concentrically-Braced Frames," Proceedings of the 14th World
Conference on Earthquake Engineering, Beijing, China.
[5] Roke, D.; Sause, R.; Ricles, J.M.; & Chancellor, N.B. (2010). "Damage-
Free Seismic-Resistant Self-Centering Concentrically-Braced Frames."
ATLSS Report 10-09, Lehigh University, Bethlehem, PA, USA.
[6] ASCE (2010).Minimum Design Loads for Buildings and Other
Structures, ASCE7-10.American Society of Civil Engineers, Reston,
VA, USA.
[7] Mazzoni, S.; McKenna, F.; Scott, M.H.; Fenves, G.L.; et al.
(2009).Open System for Earthquake Engineering Simulation
(OpenSEES) User Command-Language Manual. Pacific Earthquake
Engineering Research Center, University of California, Berkeley.
[1] Fahnestock, L.A.; Sause, R.; &Ricles, J.M. (2007a). "Seismic Response
and Performance of Buckling-Restrained Braced Frames," ASCE
Journal of Structural Engineering 133(9): 1195-1204.
[2] Fahnestock, L.A.; Sause, R.; &Ricles, J.M. (2007b). "Experimental
Evaluation of a Large-Scale Buckling-Restrained Braced Frame," ASCE
Journal of Structural Engineering 133(9): 1205-1214.
[3] Roke, D; Sause, R.; Ricles, J.M.; Seo, C.-Y.; & Lee, K.S. (2006). "Self-
Centering Sesimic-Resistant Steel Concentrically-Braced Frames,"
Proceedings of the 8th U.S. National Conference on Earthquake
Engineering, EERI, San Francisco, USA.
[4] Roke, D; Sause, R.; Ricles, J.M.; & Chancellor, N.B. (2008). "Design
Concepts for Damage-Free Sesimic-Resistant Self-Centering Steel
Concentrically-Braced Frames," Proceedings of the 14th World
Conference on Earthquake Engineering, Beijing, China.
[5] Roke, D.; Sause, R.; Ricles, J.M.; & Chancellor, N.B. (2010). "Damage-
Free Seismic-Resistant Self-Centering Concentrically-Braced Frames."
ATLSS Report 10-09, Lehigh University, Bethlehem, PA, USA.
[6] ASCE (2010).Minimum Design Loads for Buildings and Other
Structures, ASCE7-10.American Society of Civil Engineers, Reston,
VA, USA.
[7] Mazzoni, S.; McKenna, F.; Scott, M.H.; Fenves, G.L.; et al.
(2009).Open System for Earthquake Engineering Simulation
(OpenSEES) User Command-Language Manual. Pacific Earthquake
Engineering Research Center, University of California, Berkeley.
@article{"International Journal of Architectural, Civil and Construction Sciences:63275", author = "David A. Roke and M. R. Hasan", title = "The Effect of Frame Geometry on the Seismic Response of Self-Centering Concentrically- Braced Frames", abstract = "Conventional concentrically-braced frame (CBF)
systems have limited drift capacity before brace buckling and related
damage leads to deterioration in strength and stiffness. Self-centering
concentrically-braced frame (SC-CBF) systems have been developed
to increase drift capacity prior to initiation of damage and minimize
residual drift. SC-CBFs differ from conventional CBFs in that the
SC-CBF columns are designed to uplift from the foundation at a
specified level of lateral loading, initiating a rigid-body rotation
(rocking) of the frame. Vertically-aligned post-tensioning bars resist
uplift and provide a restoring force to return the SC-CBF columns to
the foundation (self-centering the system). This paper presents a
parametric study of different prototype buildings using SC-CBFs.
The bay widths of the SC-CBFs have been varied in these buildings
to study different geometries. Nonlinear numerical analyses of the
different SC-CBFs are presented to illustrate the effect of frame
geometry on the behavior and dynamic response of the SC-CBF
system.", keywords = "Earthquake resistant structures, nonlinear analysis,
seismic analysis, self-centering structural systems.", volume = "6", number = "2", pages = "204-6", }