钢筋锈蚀对钢筋混凝土圆柱抗震性能的影响

李金波, 贡金鑫

中国公路学报 ›› 2008, Vol. 21 ›› Issue (4) : 55-60.

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中国公路学报 ›› 2008, Vol. 21 ›› Issue (4) : 55-60.

钢筋锈蚀对钢筋混凝土圆柱抗震性能的影响

  • 李金波, 贡金鑫
作者信息 +

Influences of Rebar Corrosion on Seismic Behavior of Circular RC Columns

  • LI Jin-bo, GONG Jin-xin
Author information +
文章历史 +

摘要

对不同锈蚀程度的钢筋混凝土圆柱进行了低周反复试验, 研究了不同轴压比下钢筋锈蚀率对钢筋混凝土圆柱承载力、刚度、延性、耗能能力等的影响, 并给出了试件的滞回曲线和骨架曲线。试验结果表明:随着钢筋锈蚀率和轴压比的增大, 滞回环的面积逐渐减小, 试件的刚度、延性和耗能能力逐步降低;当遭受严重腐蚀时, 试件可能由塑性破坏转变为脆性破坏。

Abstract

A cyclic horizontal loading test was carried out using circular RC columns damaged by different degrees of rebar corrosion. In the experiment, the seismic behaviors of circular corroded RC columns under different degrees of axial loads, such as bearing capacity, stiffness, ductility and dissipated energy capacity were studied, and the hysteretic and skeleton curves for the circular corroded RC columns were obtained. Test results show that the stiffness, ductility and energy dissipation capacity, as well as areas of hysteresis loops of circle corroded RC columns can be significantly reduced along with the increase of rebar corrosion extent and degrees of axial load. If the circular RC columns contain extremely corroded rebars, the column damaged by plastic failure will be prone to brittle shear failure under seismic loads.

关键词

桥梁工程 / 钢筋混凝土圆柱 / 低周反复试验 / 抗震性能 / 钢筋锈蚀 / 延性

Key words

bridge engineering / circular RC column / cyclic horizontal loading test / seismic beha-vior / rebar corrosion / ductility

引用本文

导出引用
李金波, 贡金鑫. 钢筋锈蚀对钢筋混凝土圆柱抗震性能的影响[J]. 中国公路学报, 2008, 21(4): 55-60
LI Jin-bo, GONG Jin-xin. Influences of Rebar Corrosion on Seismic Behavior of Circular RC Columns[J]. China Journal of Highway and Transport, 2008, 21(4): 55-60
中图分类号: U441.5   

参考文献

[1] 史庆轩, 牛荻涛, 颜桂云.反复荷载作用下锈蚀钢筋混凝土压弯构件恢复力性能的试验研究[J].地震工程与工程振动, 2000, 20(4):44-50.
SHI Qing-xuan, NIU Di-tao, YAN Gui-yun.Experimental Research on Hysteretic Characteristics of Corroded R.C. Members with Flexural and Compressive Axial Loads Under Repeated Horizontal Loading[J].Earthquake Engineering and Engineering Vibration, 2000, 20(4):44-50.
[2]贡金鑫, 仲伟秋, 赵国藩.受腐蚀钢筋混凝土偏心受压构件低周反复性能的试验研究[J].建筑结构学报, 2004, 25(5):92-97.
GONG Jin-xin, ZHONG Wei-qiu, ZHAO Guo-fan.Experimental Study on Low-cycle Behavior of Cor-roded Reinforced Concrete Member Under Eccentric Compression[J].Journal of Building Structures, 2004, 25(5):92-97.
[3]牛荻涛, 陈新孝, 王学民.锈蚀钢筋混凝土压弯试件抗震性能试验研究[J].建筑结构, 2004, 34(10):36-38.
NIU Di-tao, CHEN Xin-xiao, WANG Xue-min.Experimental Study on Seismic Performance of Corroded Reinforced Concrete Members with Flexure and Compression[J].Building Structure, 2004, 34(10):36-38.
[4]LEE H S, KAGE T, NOGUCHI T, et al.An Experimental Study on the Retrofitting Effects of Reinforced Concrete Columns Damaged by Rebar Corrosion Strengthened with Carbon Fiber Sheets[J].Cement and Concrete Research, 2003, 33(4):563-570.
[5]BELARBI A, BAE S W.An Experimental Study on the Effect of Environmental Exposures and Corrosion on RC Columns with FRP Composite Jackets[J].Composites Part B:Engineering, 2007, 38(5/6): 674-684.
[6]XIAO J Z, ZHANG C.Seismic Behavior of RC Columns with Circular, Square and Diamond Sections[J].Construction and Building Materials, 2007, 21(1):1-10.
[7]宋一凡, 王玉萍.计入弹性基础效应的钢筋混凝土桥梁结构塑性倒塌分析[J].交通运输工程学报, 2003, 3(3):26-31.
SONG Yi-fan, WANG Yu-ping.Plastic Collapse Mechanism of Seismic Assessment for Existing RC Bridges with Flexible Foundation and Bearing Pads[J].Journal of Traffic and Transportation Engineering, 2003, 3(3):26-31.
[8]张国军, 刘伯权, 白国良.钢筋混凝土框架柱在高轴压比下的抗震性能试验[J].长安大学学报:自然科学版, 2002, 22(6):53-57.
ZHANG Guo-jun, LIU Bo-quan, BAI Guo-liang.Experimental Study on Aseismic Behavior of RC Frame Columns with High Axial Compression Ratio[J].Journal of Changan University:Natural Science Edition, 2002, 22(6):53-57.
[9]仲伟秋, 贡金鑫.钢筋电化学快速锈蚀试验控制方法[J].建筑技术开发, 2002, 29(4):28-29.
ZHONG Wei-qiu, GONG Jin-xin.Control Method for Quick Electrochemical Corrosion Experiment of Rebars[J].Building Technique Development, 2002, 29(4):28-29.
[10]MORETTIA M, TASSIOS T P.Behaviour of Short Columns Subjected to Cyclic Shear Displacements:Experimental Results[J].Engineering Structures, 2007, 29(8):2018-2029.
[11]HINDI R, TURECHEK W.Experimental Behavior of Circular Concrete Columns Under Reversed Cyclic Loading[J].Construction and Building Materials, 2006, 20:1-10.

基金

教育部创新团队资助项目(IRT0518)
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