Comparing Hysteretic Behavior of Flexible Piers with Different Stirrup Ratio and Slenderness Ratio

Abstract:

Flexible piers have been widely used in bridge engineering due to its superior ductility. The stirrup ratio and slenderness ratio were deemed to have a most important impact on hysteretic behavior of them. Five flexible piers were made under static vertical loads and low cyclic horizontal reversed loads. The process of test was introduced and failure mechanism, hysteretic behavior, skeleton curve, ductility, energy dissipation capacity, and stiffness degeneration of flexible piers were analyzed. Experimental studies show that (1) Failure mode of specimen is bending failure and their ductility factor falls between 4.15 and 6.30; (2) displacement ductility factor improves with increasing of the stirrup ratio. Stirrup could greatly improve the capacity on ductility and energy dissipation, while it has little impact on the bearing capacity; (3) ultimate bearing capacity decline with the increase of slenderness ratio, however, when the slenderness ratio member is larger, the hysteresis curve is fuller and energy-dissipation is better.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 576-580
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.576
• Online since: May 2011
• Authors: Xiao Jing Yuan, Fan Liu
• Keywords: Cyclic Testing, Flexible Piers, Hysteretic Behaviour, Slenderness Ratio, Stirrup Ratio

References

[1] Ju Yan-zhong, Yan Guo-ping . Experimental study on seismic behaviors of large-scale rc round-ended piers with low reinforcement ratio [J]. China Civil Engineering Journal,2003,36(11): 65-69

[2] Sun Zhuo,Yan Gui-ping. Experimental research on a seismic performance of rc piers [J].China Safety Science Journal,2003,13(1/3): 59-62/46-49

[3] Ju Yan-zhong,Experimental research on a seismic performance of rc railway piers with low steel ratios [J]. Journal of The China Railway Society,2004,26(5):91-95

[4] Ye Xian-guo, Experimental research on seismic energy dissipation performance of reinforced concrete bridge piers [J]. Journal of He Fei University of Technology Journal of He Fei University of Technology,2005,28(9): 1171-1177

[5] Wang Hai-bo,Ye Xian-guo. Experimental study on seismic energy dissipation performance and seismic damage grade of reinforced concrete bridge pier [J]. Engineering and Construction,2006,20(1),1-3

[6] Wei Yang, Wu Gang. Ductility analysis of FRP-confined short rectangular reinforced concrete columns [J] Journal Of Earthquake Engineering And Engineering Vibration,2009,29(3):71-76