Test study on aseismic performance of concrete columns reinforced with mixed PC steel rods-steel bars

ZHANG Xiangcheng1,2, WU Zhichun1, LI Xiaopeng2, ZHAO Jun2, ZHAO Jiabao1, WANG Chunguang3, LIU Mingyang3

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (15) : 133-141.

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PDF(3139 KB)
Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (15) : 133-141.

Test study on aseismic performance of concrete columns reinforced with mixed PC steel rods-steel bars

  • ZHANG Xiangcheng1,2, WU Zhichun1, LI Xiaopeng2, ZHAO Jun2, ZHAO Jiabao1, WANG Chunguang3, LIU Mingyang3
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Abstract

To investigate the seismic performance of concrete columns reinforced with PC steel rod and steel bar, five concrete column specimens with the same geometry and reinforcement ratio but different PC steel rod replacement ratio were designed and constructed, then the influence of the PC steel rod replacement ratio on the seismic performance of concrete columns was studied by pseudo-static tests. The results show that: with the increase of PC steel rod replacement ratio, the crack distribution height of the specimen decreased, and the number of cracks decreased, the fullness of the hysteresis curve gradually decreased, the energy dissipation capacity decreased, the residual displacement drift decreased, the resilient performance enhanced; the lateral peak load of the specimens were close when the replacement ratio of PC steel rod was no greater than 50%; the lateral peak load of the specimens increased with the increase of the replacement ratio of PC steel rod when the replacement ratio of PC steel rod was greater than 50%; the residual displacement drift of the concrete columns configured with PC steel rod was relatively close and significantly smaller than that of the reinforced concrete column without PC steel rod when drift ratio was no greater than 1.0%; the residual displacement drift of the column decreased continuously with the increase of the PC steel rod replacement ratio when drift ratio was larger than 1.0%.

Key words

PC steel rod / concrete column / quasi-static test / seismic performance / resilient performance

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ZHANG Xiangcheng1,2, WU Zhichun1, LI Xiaopeng2, ZHAO Jun2, ZHAO Jiabao1, WANG Chunguang3, LIU Mingyang3. Test study on aseismic performance of concrete columns reinforced with mixed PC steel rods-steel bars[J]. Journal of Vibration and Shock, 2024, 43(15): 133-141

References

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