Ultimate Limit Design of Strengthened Steel Columns by Mortar-Filled FRP Tubes

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Material</td><td class="align_center">Modulus (GPa)</td><td class="align_center">Strength (MPa)</td><td class="align_center">Notes</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Steel</td><td class="align_center">204.2</td><td class="align_center">362.0/575.6<sup>1</sup></td><td class="align_center">In tension</td></tr><tr><td class="align_left">FRP tube</td><td class="align_center">36.4</td><td class="align_center">293.4</td><td class="align_center">In compression</td></tr><tr><td class="align_left">Mortar</td><td class="align_center">23.1</td><td class="align_center">36.0</td><td class="align_center">In compression</td></tr><tr><td class="align_left">FRP fabrics</td><td class="align_center">96.8</td><td class="align_center">2905.0</td><td class="align_center">In tension</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div><sup>1</sup>Yields strength/ultimate strength.<br/></div></td></tr></table>

<div>Material properties of specimens.</div>

Mathematical Problems in Engineering

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Table 2

Table 2: Ultimate Limit Design of Strengthened Steel Columns by Mortar-Filled FRP Tubes 