114. Seismic retrofitting of rectangular bridge piers with FRC jackets

Title: 114. Seismic retrofitting of rectangular bridge piers with FRC jackets
Author(s): D. Vachon, B. Massicotte
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 1247 - 1256
Total Pages: 10
Nb references: 6
Language: English

Abstract: The research project described in this paper was aimed at exploring the used of a thin jacket made out of fibre reinforced concrete (FRC) for enhancing the performance of lap regions of rectangular columns. It is divided in three main parts. The first one presents the deficiencies of existing bridge piers and the rationale of the proposed strengthening technique. The second part describes the development of self compacting FRC mixes using various types of fibres at high volumes and the selection of the most effective one in term of workability and flexural strength. Finally, the paper presents the results of an experimental program in which large scale column specimens were fabricated with reinforcement details reproducing the conditions that prevailed before modern recommendations. Three conditions were tested: reference, with a FRC cover, and with a FRC cover reinforced with a welded wire mesh anchored to the column core. The specimens were tested in reverse cyclic loading with increasing displacement. The tests results showed the significant improvement of the column performance, the failure mode changing from a brittle one, for the reference specimen, to a very ductile one with plastic hinges forming outside the lap region, for the two strengthened specimens.

Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00