408.2R-12: Report on Bond of Steel Reinforcing Bars Under Cyclic Loads

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Title: 408.2R-12: Report on Bond of Steel Reinforcing Bars Under Cyclic Loads

Author(s): Joint ACI-ASCE Committee 408

Publication: Technical Documents

Volume:

Issue:

Appears on pages(s): 35

Keywords: anchorage; bar slip; bond; bond models; cyclic loads; design recommendations; development length; fatigue; hooks; earthquake loads; splices.

Date: 9/1/2012

Abstract:
This report summarizes research on bond strength and behavior of steel reinforcing bars under cyclic loads. The report provides a background to bond problems, discusses the main variables affecting bond performance, and describes bond behavior under cyclic loads. Two general types of cyclic loads are addressed: high-cycle (fatigue) and low-cycle (earthquake and similar). The anchorage behaviors of straight bars, hooked bars, and lap splices are included. Analytical bond models are described, design recom¬mendations are provided for both high- and low-cycle fatigue, and suggestions for further research are given.