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Showing 1 to 11 of 11 for “"RC column"”.
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Behavior of hollow-core fiber reinforced polymer-concrete-steel bridge columns under extreme loading
… and quickly-constructed hollow-core fiber reinforced polymer-concrete-steel (HC-FCS) bridge columns under extreme loading. The HC-FCS column consists of a concrete wall sandwiched between an outer fiber reinforced polymer (FRP) tube and an inner steel tube. The steel tube was embedded into a …
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Seismic Performance of Square Nickel-Titanium Reinforced ECC Columns with Headed Couplers
… repair costs to a minimum by reducing damage to column plastic hinges and minimizing residual drifts. These objectives can be accomplished by using innovative materials such as Nickel-Titanium shape memory alloy bars (SMA) and engineered cementitious composites (ECC). This study focused on …
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Response of high strength concrete columns under fire-induced biaxial bending
Reinforced concrete (RC) columns, under fire conditions, can experience biaxial bending which can arise due to eccentricity in loading, uneven spalling, or due to significant thermal gradients generated through 1-, 2-, or 3-sides of fire exposure. High strength concrete (HSC) columns are especially …
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An integrated VE damping and FRP strengthening system for performance-based seismic retrofit of RC columns
… a cost- effective retrofitting design of reinforced concrete (RC) columns for multiple performances objectives. This methodology involves the integration of viscoelastic (VE) damping layers and fiber reinforced polymer (FRP) strengthening sheets into one compact retrofitting system. Both …
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Behavior of reinforced concrete column-beam joint subjected to close in blast loads with polyurea and FRP sheets
… investigates the structural response of reinforced concrete (RC) column-beam joint under close-in blast loads using finite element modeling in LS-DYNA with an Arbitrary Lagrangian-Eulerian (ALE) formulation. Failure is captured through element erosion based on maximum principal strain. The …
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Performance of RC Columns Retrofitted with UHPFRC Jackets Under Cyclic Displacement Reversals
… combined experimental and analytical research, the performance of reinforced concrete columns with or without prior damage, after retrofitting with ultra-high-performance fiber-reinforced concrete (UHPFRC) jackets and subjected to cyclic loading that simulates earthquake effects. A series …
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Corrosion Behavior of Corrosion-Resistant Steel Reinforcements in High and Ultra-High Performance Concrete in Chloride Attack Environments
Corrosion of reinforcing steel is one of the most important concerns for reinforced concrete (RC) structures. The use of corrosion-resistant steel reinforcements and advanced concrete is one potential solution. This dissertation presents the research findings of the corrosion behavior of …
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Performance of Full-Scale Reinforced Concrete Columns Subjected to Extreme Earthquake Loading
Seven full-scale reinforced concrete (RC) columns were tested at the Multi-Axial Subassemblage Testing (MAST) Laboratory of the University of Minnesota to investigate their performance under extreme seismic events that would produce near-collapse conditions. One of the goals of the tests was to …
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Assessment of seismic damage to civil structures using statistical pattern recognition techniques and time series analysis
… faced by structural engineers. In this research two complementary methods of damage estimation using either knowledge of the structure and earthquake or recorded structural responses were investigated. These methods gave different natured estimates, either prediction or detection, which are …
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Effect of Severe Corrosion on Lateral Strength of Square RC Bridge Columns
<p>Corrosion of reinforcing steel bars is the primary durability problem that causes degradation of reinforced concrete structures located in aggressive environments. Severe corrosion of steel bars decreases the lateral load-carrying capacity of reinforced concrete members, causes loss in the …
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Seismic retrofit and repair of reinforced concrete bridge columns using shape memory alloy spirals
This research focuses on examining the use of shape memory alloy (SMA) spirals in the seismic retrofitting and repair of reinforced concrete (RC) bridge columns. The thermally triggered recovery stress of prestrained SMA spirals is utilized to apply large active confinement pressure at the column’s …