变轴力钢筋混凝土墩柱抗震性能试验研究

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (18) : 131-139.

论文

变轴力钢筋混凝土墩柱抗震性能试验研究

陈嵘 1，2 ，雷俊卿 1

作者信息 +

Experimental investigations of the Seismic Behavior of RC Bridge Piers under Variable Axial Load

Chen Rong 1,2 Lei Junqing 1

Author information +

文章历史 +

摘要

为研究钢筋混凝土墩柱在变轴力往复荷载下的抗震性能，制作6个试件进行试验，1个试件承受恒定轴力，5个试件承受变轴力。试验对比研究恒定轴力和变轴力，变轴力试件不同纵筋配筋率、箍筋体积配箍率、高宽比对抗震性能的影响，分析上述参数变化对滞回曲线、裂缝分布、骨架线、位移延性系数、残余变形、耗能能力的影响趋势。试验表明轴力变化对位移、残余变形、破坏程度有较大影响。最后基于性能化设计理论总结试验，依据我国桥梁规范要求给出设计建议考虑变轴力的影响。

Abstract

To study the seismic performance of RC bridge piers under variable axial force, cyclic loading test were carried out on six specimens, of which one was under constant axial load and the other five with different longitudinal reinforcement ratio, volumetric percentage of stirrups, and shear span ratio were subjected to variable axial force. Based on the test result, the hysteretic curve, fracture distribution, skeleton line, displacement ductility factor, residual deformation, and energy dissipation capacity of the tested specimens were studied. It indicated that variable axial force has apparent influence on the displacement, residual deformation, and the level of destruction of RC bridge piers. According to the performance-based seismic design and the codes of highway bridges, suggestion was proposed to consider varying axial load during design.

导出引用

陈嵘 1，2,雷俊卿 1. 变轴力钢筋混凝土墩柱抗震性能试验研究[J]. 振动与冲击, 2017, 36(18): 131-139

Chen Rong 1,2 Lei Junqing 1. Experimental investigations of the Seismic Behavior of RC Bridge Piers under Variable Axial Load[J]. Journal of Vibration and Shock, 2017, 36(18): 131-139

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