Available at: http://digitalcommons.calpoly.edu/theses/149
Date of Award
MS in Civil and Environmental Engineering
Civil and Environmental Engineering
Dr. Charles Chadwell
In recent earthquakes, structures have not performed as well as expected resulting in a need for better means of retroﬁtting and improvements in seismic design. Fiber Reinforced Polymers (FRP), as a material with potential to increase strength and ductility of columns in conjunction with capacity design methodology, has promise for seismic design. By investigating the displacement, ductility, and ﬂexural strength properties of FRP conﬁned reinforced concrete circular cross sections, this study analyzes the seismic applications of FRP conﬁnement.
The study is performed by incorporating an FRP conﬁned concrete stress-strain model into a developed Moment-Curvature and PM Interaction software. This software conducts a comparison between traditional steel and FRP conﬁned sections while performing parameter studies on the 28-day unconﬁned concrete compressive strength, longitudinal reinforcing ratio, cross section diameter, FRP conﬁnement jacket thickness-cross section diameter ratio, and FRP conﬁnement system design variables. These studies validate FRP’s performance for seismic applications resulting in several design recommendations to increase displacement capacity, ductility, and ﬂexural strength and, thus, seismic performance.