Frieder Seible

TL;DR: In this paper, a column jacketing system consists of continuous carbon fiber prepreg tows wound in an automated fashion onto existing circular or rectangular concrete columns, with variable jacket thickness along the column height based on experimentally validated design models.

TL;DR: In this paper, the authors present an overview of the research and development of applications of advanced composites to civil infrastructure renewal at the University of California, San Diego (UCSD).

TL;DR: In this paper, a research program investigating the retrofit of circular columns by encasing plastic hinge regions with a bonded steel jacket was presented, and results from 6 large-scale column tests showed that steel jacketing results in column ductilities as high as those available from confined columns designed to current codes and inhibits bond failures in lap splices of longitudinal reinforcement in the hinge regions.

TL;DR: In this article, a theoretical and experimental investigation conducted to study the shear failure mode of reinforced concrete bridge columns designed before 1971, and to establish the effectiveness of full-height steel jackets for enhancing the seismic shear strength is described.

TL;DR: In this paper, the second part of a two-part paper on assessment and retrofit of bridge columns susceptible to shear failure, experimental results are presented from two test programs, one involving tests of four "as-built" circular columns expected to fail in shear, with a further four columns retrofitted with steel jackets.