Experimental study on seismic behavior of precast concrete circular section column with grouted sleeve
Experimental study on seismic behavior of precast concrete circular section column with grouted sleeve
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灌浆套筒预制混凝土圆截面柱抗震性能试验研究
DOI：
10.1016/j.jobe.2021.103693
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发表时间：
2021-11
影响因子：
6.4
通讯作者：
Xiang Liu
中科院分区：
文献类型：
--
作者：
Zhixing Zeng;Wenmao Yu;Yi Luo;Chen Wu;Xiang Liu
对带注浆套筒的圆形截面预制柱的抗震性能进行了试验研究。设计了6根预应力混凝土柱和3根现浇混凝土柱，并进行了低周反复加载试验。比较了相同条件下PC和CC的抗震性能差异。研究了纵向配筋率(LRR)、配箍率(SVR)和轴压比(ACR)对混凝土滞回曲线、耗能性能和变形能力的影响。结果表明：(1)PC和CC的破坏模式相似，但套筒中钢筋有少量拔出；(2)与CC相比，PC的滞回曲线更饱满，水平承载力降低约10%，延性更好；(3)随着配筋率的增加，装配柱的承载能力提高，极限位移基本不变，延性降低，耗能性能提高；(4)随着配筋率的增加，PC的承载能力提高，延性降低，耗能性能降低；(5)SVR对PC的抗震性能影响不大。
The seismic behavior of circular section precast concrete columns (PC) with grouted sleeves was experimentally studied. Six PC and three cast-in-situ concrete columns (CC) were designed, and their low cycle reciprocating loading tests were carried out. The differences of seismic performance between PC and CC under the same conditions were compared. The effects of longitudinal reinforcement ratio (LRR), stirrup volume ratio (SVR) and axial compression ratio (ACR) on hysteretic curve, energy dissipation performance and deformation capacity of PC were studied. The results show that: (1) the failure modes of PC and CC were similar, but there was a small amount of pull-out of the reinforcement in the sleeve; (2) compared with CC, the hysteretic curve of PC was fuller, the horizontal bearing capacity was reduced by about 10%, and the ductility was better; (3) with the increase of LRR, the bearing capacity of fabricated columns increases, the ultimate displacement remains basically unchanged, the ductility decreases and the energy dissipation performance increases; (4) with the increase of ACR, the bearing capacity of PC increases, the ductility decreases and the energy dissipation performance decreases; (5) the SVR has little effect on the seismic performance of PC.
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