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Optimization of Replaceable Steel Slit Dampers in Innovative Resilient Rocking Columns

Nidhi, Vickey
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613751292726709

Abstract Details

2020, MS, University of Cincinnati, Engineering and Applied Science: Civil Engineering.
An Innovative Resilient Rocking (IRR) column is a potential solution to the economic losses caused by plastic hinge formation at the base of columns in adequately designed moment resisting frames (MRF). These columns allow rocking about the column base and centralize ductile damage through replaceable steel-slit dampers that connect the foundation and the column. This study expands upon the experimental work done by Liu et. al. (2018) [1] on IRR columns, which was limited to single row slit steel dampers and an axial compression ratio of 0.1. A benchmarked three-dimensional model for IRR columns was built using the commercially available finite element software, Abaqus. In this study, three types of steel dampers were considered – single row slit steel dampers, double row slit steel dampers and diamond-shaped slit steel dampers. Parametric studies were conducted in Abaqus using the three type of steel dampers. Parameters considered in this study were axial compression ratio, slenderness ratio, and plate thickness. Results from this study showed that the load carrying capacity of the IRR column increased with increase in axial compression ratio of the column and increase in plate thickness for all types of dampers. Single row slit steel dampers showed greater load carrying capacity and energy dissipating capacity for lower slenderness ratios. Diamond-shaped slit steel dampers experienced yielding throughout the strut section, but did not show superior performance in terms of load carrying capacity. Overall, among the three types of dampers, double row slit steel dampers performed best in terms of load carrying capacity and showed greater energy dissipating capabilities.
Rachel Chicchi, Ph.D. (Committee Chair)
Yang Liu, Ph.D. (Committee Member)
Gian Andrea Rassati, Ph.D. (Committee Member)
126 p.
Civil Engineering

Recommended Citations

Citations

  • Nidhi, V. (2020). Optimization of Replaceable Steel Slit Dampers in Innovative Resilient Rocking Columns [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613751292726709

    APA Style (7th edition)

  • Nidhi, Vickey. Optimization of Replaceable Steel Slit Dampers in Innovative Resilient Rocking Columns. 2020. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613751292726709.

    MLA Style (8th edition)

  • Nidhi, Vickey. "Optimization of Replaceable Steel Slit Dampers in Innovative Resilient Rocking Columns." Master's thesis, University of Cincinnati, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613751292726709

    Chicago Manual of Style (17th edition)

ucin1613751292726709
152
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This open access ETD is published by University of Cincinnati and OhioLINK.