Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Concrete Confinement"”.
-
Confinement Limits For Tensile Lap Splices Under Static Loading
… splitting action is recognized by the American Concrete Institute (ACI 318-89) and the design recommendations of the ACI Committee 408, on which the American code provisions are partially based. However, a limit exists on the benefit that can be derived from this confinement. In Canada, CSA …
-
Retrofitting beam-to-column joints for improved seismic performance microform
… 1970's, most codes for the design of reinforced concrete structures did not include provisions for ductility during seismic events was not prevalent in most codes. The guidelines that did exist were minimal, and often left a fair amount of room for interpretation by the design engineer. Hence, …
-
Nonlinear inelastic analysis of concrete-filled steel tubular slender beam-columns
High strength thin-walled concrete-filled steel tubular (CFST) slender beam-columns may undergo local and global buckling when subjected to biaxial loads, preloads or cyclic loading. The local buckling effects of steel tube walls under stress gradients have not been considered in existing numerical …
-
Experimental testing and constitutive modeling of concrete confined with shape memory alloys
Concrete confinement has been proven to be effective in increasing concrete strength and ductility, which are essential characteristics for structures prone to extreme loading events, such as earthquakes. Andrawes and Shin (2008) first proposed the idea of using shape memory alloy (SMA) spirals to …
-
Characterization of behavior of steel-concrete composite members and frames with applications for design
Steel-concrete composite frames are seeing increased use in practice. Their excellent structural characteristics, including high strength, stiffness, and ductility, make them an appealing option for many building configurations. However, there exist gaps in the knowledge of behavior and the design …
-
Strength and Ductility of Concrete Cylinders Confined with Fiber Metal Laminate Composites
… Externally bonded FRP retrofits of reinforced concrete elements provide an efficient, economical, and accepted method of mitigating deficiencies related to seismic and blast loads, as well as addressing corrosion-related issues. FRPs retrofits are widely regarded as cost effective as the cost …
-
Structural behavior and modeling of high-performance fiber-reinforced cementitious composites for earthquake-resistant design
For earthquake-resistant design, adequate concrete confinement is vital for a ductile structural response and for providing a stable energy dissipating mechanism. Since concrete materials generally exhibit quasi-brittle failure and a low tensile strength, designers of traditional reinforced …
-
Stress-Strain Behavior for Actively Confined Concrete Using Shape Memory Alloy Wires
… memory allow (SMA) wires to actively confine concrete members is discussed and further researched in great detail. This new confinement method utilizes a constant confining pressure that is a direct result to the SMA material being able to recover large inelastic strains with the application …
-
Structural Performance and Corrosion Resistance of Fiber Reinforced Polymer Wrapped Steel Reinforcing Bars
… steel reinforcement bars for use in reinforced concrete structures. The investigation is comprised of a bar analytical model using laminate theory, an in-depth analytical model for reinforced concrete sections, and a series of experimental tests to assess the structural performance and corrosion …
-
Retrofit of deficient lap splice with post-installed anchors
As concrete infrastructure ages or is re-purposed, there is an increasing need for efficient retrofit solutions, with deficient lap splices being one of many research areas. A possible method to increase the capacity of deficient lap splices is to use post-installed undercut anchors. These anchors …