Seismic Behavior and Design Approach of Variable-Damping Self-Centering Braced Frame
Publication: Journal of Structural Engineering
Volume 147, Issue 6
Abstract
In this paper, the seismic performance and resilience of a 15-story variable-damping self-centering braced frame (VD–SCBF) were analyzed. The interstory drift ratios (IDRs) of the VD–SCBF are similar to those of the buckling-restrained braced frame, but are lower than the prepressed self-centering braced frame (PS–SCBF). The residual deformation ratios (RDRs) of the VD–SCBF are reduced, and its story acceleration ratios are smaller than the PS–SCBF. Under near-fault earthquakes, the higher-order mode has a greater impact, which increases the inelastic response and ductility demand. The effects of the brace design parameters on structural performance were also investigated. The optimal design parameters are as follows: the activation displacement is appropriately small; the variable-damping region corresponds to the axial displacement of 1% IDR; the ratio of the prepressed force to initial Coulomb damping force is 1.0–1.1; and the viscous damping coefficient increases. Combining the damage development process of different components, the VD–SCBF can be designed based on its four seismic performance levels to ensure a reliable resilience.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
All models and code generated or used during the study appear in the published article. All data generated or used during the study are available from the corresponding author by request.
Acknowledgments
The authors gratefully acknowledge the partial support of this research by the National Natural Science Foundation of China under Grant No. 52078036.
References
AISC. 2005. Seismic provisions for structural steel buildings. AISC 341-05. Chicago: AISC.
Baker, J. W. 2007. “Quantitative classification of near-fault ground motions using wavelet analysis.” B. Seismol. Soc. Am. 97 (5): 1486–1501. https://doi.org/10.1785/0120060255.
Bray, J. D., and A. Rodriguez-Marek. 2004. “Characterization of forward-directivity ground motions in the near-fault region.” Soil Dyn. Earthquake Eng. 24 (11): 815–828. https://doi.org/10.1016/j.soildyn.2004.05.001.
Christopoulos, C., R. Tremblay, and H. J. Kim. 2008. “Self-centering energy dissipative bracing system for the seismic resistance of structures: Development and validation.” J. Struct. Eng. 134 (1): 96–107. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:1(96)).
Dicleli, M., and S. Buddaram. 2006. “Effect of isolator and ground motion characteristics on the performance of seismic-isolated bridges.” Earthquake Eng. Struct. Dyn. 35 (2): 233–250. https://doi.org/10.1002/eqe.522.
Di Sarno, L., and A. S. Elnashai. 2009. “Bracing systems for seismic retrofitting of steel frames.” J. Constr. Steel Res. 65 (2): 452–465. https://doi.org/10.1016/j.jcsr.2008.02.013.
Eatherton, M. R., L. A. Fahnestock, and D. J. Miller. 2014. “Self-centering buckling restrained brace development and application for seismic response mitigation.” In Proc., 10th US National Conf. on Earthquake Engineering: Frontiers of Earthquake Engineering. Oakland, CA: Earthquake Engineering Research Institute.
Elnashai, A. S., and L. Di Sarno. 2008. Fundamentals of earthquake engineering. Chichester, UK: Wiley.
Erochko, J., C. Christopoulos, and R. Tremblay. 2014. “Design, testing, and detailed component modeling of a high-capacity self-centering energy-dissipative brace.” J. Struct. Eng. 141 (8): 04014193. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001166.
FEMA (Federal Emergency Management Agency). 2000. Prestandard and commentary for the seismic rehabilitation of buildings. FEMA 356. Washington, DC: FEMA.
ICBO (International Conference of Building Officials). 1997. Uniform building code. UBC 97. Whittier, AK: ICBO.
Livermore Software Technology Corporation. 2007. LS-DYNA keyword user’s manual. Livermore, CA: Livermore Software Technology Corporation.
Malhotra, P. K. 1999. “Response of buildings to near-field pulse-like ground motions.” Earthquake Eng. Struct. Dyn. 28 (11): 1309–1326. https://doi.org/10.1002/(SICI)1096-9845(199911)28:11%3C1309::AID-EQE868%3E3.0.CO;2-U.
Miller, D. J., L. A. Fahnestock, and M. R. Eatherton. 2012. “Development and experimental validation of a nickel-titanium shape memory alloy self-centering buckling-restrained brace.” Eng. Struct. 40 (Jul): 288–298. https://doi.org/10.1016/j.engstruct.2012.02.037.
MOHURD (Ministry of Housing and Urban-Rural Construction of the People’s Republic of China). 2016. Code for seismic design of buildings. GB 50011–2010. Beijing: MOHURD.
Palazzo, G., F. López-Almansa, X. Cahís, and F. Crisafulli. 2009. “A low-tech dissipative buckling restrained brace. Design, analysis, production and testing.” Eng. Struct. 31 (9): 2152–2161. https://doi.org/10.1016/j.engstruct.2009.03.015.
PEER (Pacific Earthquake Engineering Research Center). 2010. Technical report for the PEER ground motion database web application. Technical Rep. Berkeley, CA: PEER.
PEER (Pacific Earthquake Engineering Research Center). 2014. “PEER ground motion database NGA-West2.” Accessed June 19, 2020. https://peer.berkeley.edu/ngawest2.
Qiu, C. X., and S. Y. Zhu. 2016. “High-mode effects on seismic performance of multi-story self-centering braced steel frames.” J. Constr. Steel Res. 119 (Mar): 133–143.
Vafaei, D., and R. Eskandari. 2015. “Seismic response of mega buckling-restrained braces subjected to fling-step and forward-directivity near-fault ground motions.” Struct. Des. Tall Spec. 24 (9): 672–686. https://doi.org/10.1002/tal.1205.
Weber, F. 2013. “Bouc-wen model-based real-time force tracking scheme for MR dampers.” Smart Mater. Struct. 22 (4): 045012. https://doi.org/10.1088/0964-1726/22/4/045012.
Xie, X. S., L. H. Xu, and Z. X. Li. 2019. “Mechanics of a variable damping self-centering brace: Seismic performance and failure modes.” Steel Compos. Struct. 31 (2): 149–158. https://doi.org/10.12989/scs.2019.31.2.149.
Xie, X. S., L. H. Xu, and Z. X. Li. 2020. “Hysteretic model and experimental validation of a variable damping self-centering brace.” J. Constr. Steel Res. 167 (Apr): 105965. https://doi.org/10.1016/j.jcsr.2020.105965.
Xu, L. H., X. W. Fan, and Z. X. Li. 2016. “Development and experimental verification of a pre-pressed spring self-centering energy dissipation brace.” Eng. Struct. 127 (Nov): 49–61. https://doi.org/10.1016/j.engstruct.2016.08.043.
Xu, L. H., X. S. Xie, and Z. X. Li. 2018. “Development and experimental study of a self-centering variable damping energy dissipation brace.” Eng. Struct. 160 (Apr): 270–280. https://doi.org/10.1016/j.engstruct.2018.01.051.
Zhou, Z., Q. Xie, X. C. Lei, X. T. He, and S. P. Meng. 2015. “Experimental investigation of the hysteretic performance of dual-tube self-centering buckling-restrained braces with composite tendons.” J. Compos. Constr. 19 (6): 04015011. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000565.
Zona, A., and A. Dall’Asta. 2012. “Elastoplastic model for steel buckling-restrained braces.” J. Constr. Steel Res. 68 (1): 118–125. https://doi.org/10.1016/j.jcsr.2011.07.017.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 147 • Issue 6 • June 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Sep 9, 2020
Accepted: Jan 28, 2021
Published online: Mar 25, 2021
Published in print: Jun 1, 2021
Discussion open until: Aug 25, 2021
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.