Seismic Retrofits of Reinforced Concrete Columns Using Titanium Alloy Bars

Higgins, Christopher; Barbosa, Andre; Shrestha, Sharoo; Lostra, Mackenzie; Belejo, Andre F. V.; Oregon State University. School of Civil and Construction Engineering

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Seismic Retrofits of Reinforced Concrete Columns Using Titanium Alloy Bars

2020-05-01
By Higgins, Christopher ; Barbosa, Andre ; Shrestha, Sharoo ; ...

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Alternative Title:

Seismic Retrofits for Square Reinforced Concrete Columns Using Titanium Alloy Bars [Cover title]
Creators:

Higgins, Christopher ; Barbosa, Andre ; Shrestha, Sharoo ; Lostra, Mackenzie ; Belejo, Andre F. V.

Higgins, Christopher ; Barbosa, Andre ; Shrestha, Sharoo ; Lostra, Mackenzie ; Belejo, Andre F. V. Less -
Corporate Creators:

Oregon State University. School of Civil and Construction Engineering
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

[+]

Bars (Building Materials) Bridge Design Columns Earthquake Resistant Design Laboratory Tests Reinforced Concrete Retrofitting Seismic Tests Titanium Alloys
Publication/ Report Number:

FHWA-OR-RD-20-05 ; SPR-784

FHWA-OR-RD-20-05 ; SPR-784 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report 2015-2018
Corporate Publisher:

Oregon State University. Dept. of Civil, Construction, and Environmental Engineering
Abstract:

To explore their potential for seismic retrofitting of seismically deficient RC columns using titanium alloy bars (TiABs), experimental tests were undertaken in the laboratory using full-scale specimens. The specimens were designed to have vintage details and proportions that are widely recognized as being seismically deficient. Some specimens were retrofitted with TiABs to increase the confinement and provide alternate load paths for flexural resistance. Soil-structure interactions were considered for spread footing and timber pile supported footing. Specimens were subjected to reversed cyclic lateral loading and the results of these experiments are reported. Analytical methods were used to predict the individual specimen response and to conduct nonlinear time-history response analyses of bridge models with and without TiAB retrofits. The results and studies indicate that TiAB retrofits do effectively improve the seismic performance of poorly detailed RC columns. This information can be used to develop design recommendations.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:cc56e065221a331037759168aed1d8069d3a1473847c03b1041f180c4ac8a714
Download URL:

https://rosap.ntl.bts.gov/view/dot/55816/dot_55816_DS1.pdf
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Seismic Retrofits of Reinforced Concrete Columns Using Titanium Alloy Bars

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