Experimental study on seismic behavior of precast concrete circular section column with grouted sleeve

Abstract 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.