Thesis Open Access

Upgrading the Seismic Performance of Concrete bridge column Using Fiber Reinforced Polymer Under earthquake Load

Abrham Tadesse


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    <subfield code="a">Tesfye Alemu  (PhD)</subfield>
    <subfield code="u">Addis Ababa Science &amp; Technology University</subfield>
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    <subfield code="a">&lt;p&gt;According to the new Ethiopia construction information and Geological survey, the&lt;br&gt;
ground acceleration of the country is increasing and almost many of the bridge in&lt;br&gt;
Ethiopia designed based on the implementation of the new design code. Analytical&lt;br&gt;
enquiry was conducted to investigate the effect of Carbon Fiber Reinforced Polymer&lt;br&gt;
(CFRP) for retrofitting the bridge column in plastic hinge region for non-seismically&lt;br&gt;
detailed circular column. Finite Element method was used to investigate the selected&lt;br&gt;
bridge column performance and also to evaluate the retrofitting capacity carbon Fiber&lt;br&gt;
reinforced polymer, the results obtained were validated using Farid&amp;rsquo;s and Priestley&amp;rsquo;s&lt;br&gt;
empirical formulas. The performance of the selected bridge column under the old and the&lt;br&gt;
new seismic design code was comparatively investigated. Furthermore, the efficiency of&lt;br&gt;
CFRP jacketing in plastic hinge region for retrofitting the bridge column for added&lt;br&gt;
seismic load was evaluated. For the selected bridge column, earthquake load was&lt;br&gt;
estimated using new design code has 33 % load and40% total deformation increment than&lt;br&gt;
the estimated value of load using old design code and the effect of the two loads&lt;br&gt;
analyzed. Overall retrofitting the selected bridge column with Carbon Fiber Reinforced&lt;br&gt;
polymer with increasing thickness from 3mm to 4mm and wrapping the columns from&lt;br&gt;
layer one to three reduce the ultimate deformation, the ultimate rotation and Curvature of&lt;br&gt;
the bridge column 5% to 21%.&lt;/p&gt;</subfield>
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    <subfield code="a">Carbon Fiber Reinforced Polymer(CFRP), Ansys, plastic hinge region, Finite Element Method.</subfield>
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