Title:
Evaluation and Analysis of Hammerhead-Type Pier Caps
Author(s):
C. C. Fu , J. Colville, and D. R. Schelling
Publication:
Symposium Paper
Volume:
133
Issue:
Appears on pages(s):
255-276
Keywords:
bridge piers; computer analysis; cracking (fracturing); deep beams; field tests; finite element method; measurement; performance; reinforced concrete; shear properties; shrinkage; strengthening; stress analysis; Structural Research
DOI:
10.14359/2894
Date:
9/1/1992
Abstract:
Purpose is to present a lesson learned from the findings of the Governor Thomas Johnson Memorial Bridge, Maryland. The bridge has an overall length of 7205 ft, with 59 spans. Thirty-eight piers are made of concrete hammerhead-type pier caps with different height and cap sizes. The cracks observed on the deep water piers initiated the evaluation of these hammerhead-type pier caps. The structural integrity was questioned and several analysis procedures were taken on this case. Extensive computer analyses, including nonlinear finite element analyses were conducted. This paper also intends to depict the implementation of the Code, design methodology, and calculation procedures concerning this type of pier for engineering practices. Finally, the remedial strengthening method using the post-tensioning system is presented.