The shear behavior of hollow-core composite short columns under seismic loading will be presented. The investigated composite columns consisted of a concrete wall placed between an outer circular fiber reinforced polymer (FRP) and an inner circular steel tubes creating a hollow-core FRP-concrete-steel (HC-FCS) columns. Three-dimensional numerical models were developed and validated against experimental results. The models subsequently were used to conduct a parametric finite element (FE) study by performing a nonlinear-static analysis on the shear behavior of the HC-FCS short columns under combined axial and lateral loadings. The investigated parameters are the effects of the column aspect ratio, concrete wall thickness steel tube width-to-thickness (Ds/ts) ratio, confinement ratio, applied axial load level, and column concrete strength. This study revealed that the shear behavior of HC-FCS short columns is close to an extent to the behaviors of RC columns. A comparison between the attained shear strengths and the existing analytical models in the literature were carried out. A critical assessment of these shear strength models revealed vast differences in predicted responses. Finally, a new expression is proposed to predict the shear strength of HC-FCS columns under seismic loads for design purposes and showed a significantly improved correlation with the FE results.
Details
| Title | Shear Strength of Hollow-Core FRP-Concrete-Steel Columns |
| Duration | 23 Mins |
| Language | English |
| Format | MP4 |
| Size | 87 MB |
| Download Method | Direct Download |
| Download Links | BECOME A MEMBER VIEW DOWNLOAD LINKS |
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source https://www.civilax.com/shear-strength-of-hollow-core-frp-concrete-steel-columns/
