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- Bridges -- Oregon -- Design and construction -- Evaluation (1)
- Bridges -- Oregon -- Design and construction -- Evaluation -- Planning (1)
- Bridges -- Oregon -- Foundations and piers -- Evaluation (1)
- Bridges -- Retrofitting -- Oregon -- Evaluation (1)
- Bridges -- Retrofitting -- Oregon -- Evaluation -- Planning (1)
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- Earthquake hazard analysis -- Oregon (1)
- Earthquake hazard analysis -- Oregon -- Planning (1)
- Earthquake resistant design -- Oregon -- Evaluation (1)
- Earthquake resistant design -- Oregon -- Evaluation -- Planning (1)
- Foundations (1)
- Piling (Civil engineering) -- Design and construction (1)
- Slopes (Soil mechanics) -- Stability (1)
- Soil liquefaction (1)
Articles 1 - 3 of 3
Full-Text Articles in Civil Engineering
Bridge Seismic Retrofit Measures Considering Subduction Zone Earthquakes, Peter Dusicka, Ramiro Bazaez, Sarah Knoles
Bridge Seismic Retrofit Measures Considering Subduction Zone Earthquakes, Peter Dusicka, Ramiro Bazaez, Sarah Knoles
Civil and Environmental Engineering Faculty Publications and Presentations
Over the years, earthquakes have exposed the vulnerability of reinforced concrete structures under seismic loads. The recent occurrence of highly devastating earthquakes near instrumented regions, e.g. 2010 Maule, Chile and 2011 Tohoku, Japan, has demonstrated the catastrophic impact of such natural force upon reinforced concrete structures. Research was conducted to investigate the effect of subduction zone earthquakes on structural damage. The study suggests that large magnitude ground motions of long duration have the potential of significantly increasing the number of inelastic excursions and consequently incur more extensive structural damage as compared to ground motions with similar elastic spectral demands but …
Seismic Retrofit Benefit Considering Statewide Transportation Assessment, Selamawit Tesfayesus Mehary, Peter Dusicka
Seismic Retrofit Benefit Considering Statewide Transportation Assessment, Selamawit Tesfayesus Mehary, Peter Dusicka
Civil and Environmental Engineering Faculty Publications and Presentations
The purpose of this study was to identify and demonstrate a methodology to prioritize bridges for retrofit in the State of Oregon. Given the limited resources available, retrofitting all vulnerable bridges in the foreseeable future would not be practical. Instead, a retrofit strategy needs to be developed to prioritize the inventory and enumerate the retrofit cost. In this study, a prioritization methodology used a holistic assessment of overall roadway system to consider highway route segments, rather than individual bridges. The overall assessment was based on a cost-benefit analysis including retrofit cost, expected economic loss (with or without retrofit) and social …
Design Of Piles In Liquefied Soils For Combined Inertial And Kinematic Demands, Arash Khosravifar, J. Ugalde, T. Travasarou
Design Of Piles In Liquefied Soils For Combined Inertial And Kinematic Demands, Arash Khosravifar, J. Ugalde, T. Travasarou
Civil and Environmental Engineering Faculty Publications and Presentations
The design of piles penetrating liquefiable soils poses a number of challenges, including 1) accounting for the effects of liquefaction on lateral soil springs (p-y), 2) estimating liquefaction-induced kinematic demands (lateral spreading displacements) including pile-pinning effects, and 3) combining the effects of inertial demands from superstructure and kinematic demands from liquefied ground. This paper illustrates two approaches to address the above questions: A) a simplified decoupled approach adopting equivalent static analysis (ESA), and B) a detailed, coupled approach adopting nonlinear dynamic analyses (NDA). These approaches are presented through example projects showing the limitations and the potential conservatism associated with the …