NIST logo

Publication Citation: Effect of Load Path on Damage to Concrete Bridge Piers

NIST Authors in Bold

Author(s): A W. Taylor; A El-Bahy; William C. Stone; S K. Kunnath;
Title: Effect of Load Path on Damage to Concrete Bridge Piers
Published: August 01, 1996
Abstract: In earthquake engineering studies of reinforced concrete (RC) bridge columns, a controlled, cyclic lateral load pattern with gradually increasing amplitude has traditionally been applied to laboratory test specimens. However, in actual earthquakes bridge columns are exposed to random cyclic lateral loading patterns, which are much different from typical laboratory loading patterns. Current American Association of State Highway and Transportation Officials (AASHTO) and California Department of Transportation (Caltrans) design provisions are based almost entirely on tests in which traditional, controlled laboratory loading patterns have been applied. The differences in the effects of these types of loading have never been explored systematically. In this study both types of loading (controlled, cyclic lateral loads, and random earthquake type loads) were applied to a series of twelve nominally identical, one-fourth scale circular, cantilever columns, and the differences in observed damage were studied. In this paper the experimental results are briefly summarized, and preliminary findings are discussed.
Citation: NIST SP - 904
Keywords: bridges (structures); bridge columns; building technology; damage modeling; earthquake engineering; laboratory testing; random loading; reinforced concretes
Research Areas: Building and Fire Research
PDF version: PDF Document Click here to retrieve PDF version of paper (661KB)