2009 Volume 65 Issue 1 Pages 306-316
To ensure the structural safety against aftershocks and serviceability of bridges after an extreme earthquake, two rapid repair methods for a reinforced concrete bridge column are proposed. One method is based on carbon fiber sheet jacketing using quick-drying materials, and the other uses mechanical anchors for fiber band jacketing. Reinforced concrete bridge columns that suffered flexural damage at the bottom of the columns due to strong ground shaking were repaired by the proposed methods and a series of shake table tests was conducted to evaluate the effectiveness of the methods. The repair works were completed within 7 hours and 5.5 hours for the methods of quick-drying materials and mechanical anchors, respectively. The tests revealed that both the proposed methods can restore the seismic performance of reinforced concrete columns. Stable response and hysteresis of the repaired columns were observed during the shake table tests although the initial stiffness decreased by 50% due to seismic damage.
Proceedings of the JSCE Earthquake Engineering Symposium
Environmental systems research
