Title:
Pot Bearing Replacements--Two Case Studies: Cline Avenue Interchange and I-285/I-85 Interchange
Author(s):
C. Redfield and C. Seim
Publication:
Symposium Paper
Volume:
94
Issue:
Appears on pages(s):
817-824
Keywords:
box beams; bridge bearings; frames; jacking; repairs; replacing; structural design; Construction
DOI:
10.14359/3425
Date:
7/1/1987
Abstract:
What does an engineer do when a defective pot bearing needs replacing? This particular situation was encountered on two recent construction jobs. Several of the pot bearings on the Cline Avenue Project in East Chicago, Ind., needed to be replaced because the elastomer was extruding from the pot. On the I-285 project in Atlanta, Ga., six pot bearings were misaligned and had to be readjusted. The superstructure on both projects was cast in place prestressed concrete box girders. The performance of replacing the pot bearings required designing, fabricating, and installing temporary steel frames, performing special jacking operations, and removing and replacing the pot bearings. This paper describes the operation for both projects in hopes that the solutions illustrated herein may be used by others to help solve similar problems.