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为研究纵筋套筒挤压连接的预制柱抗震性能,完成了7个配箍特征值0.15~0.187、轴压比0.65~0.80、截面尺寸500 mm×500 mm的钢筋混凝土预制柱试件及1个用于对比的现浇柱试件的拟静力试验。结果表明,套筒挤压连接能够有效传递钢筋的拉、压力,预制柱试件与现浇柱试件的破坏过程、破坏形态基本相同,预制柱试件的水平力-位移滞回曲线饱满,偏心受压承载力试验值为计算值的1.26倍~1.42倍,极限位移角为1/42~1/26,抗震性能满足规范要求。套筒挤压连接可用于抗震设计的钢筋混凝土柱的纵向钢筋连接。
In order to study the seismic behavior of the prefabricated columns extruded with longitudinal ribs, seven prefabricated columns of prefabricated concrete columns with characteristic values of 0.15 ~ 0.187, axial compression ratio of 0.65 ~ 0.80 and cross sections of 500 mm × 500 mm Pseudo - static tests of cast - in - place column specimens for comparison. The results show that the sleeve extrusion connection can effectively transmit the failure process of the pull, pressure, prefabricated columns and cast-in-situ specimens, and the failure modes are basically the same. The horizontal force-displacement hysteresis curves of the prefabricated columns are full, Eccentric compression bearing capacity test value of 1.26 times to 1.42 times the calculated value, the ultimate displacement angle of 1/42 ~ 1/26, seismic performance to meet the specifications. Sleeve extrusion connection Longitudinal reinforcement connection for seismic design of reinforced concrete columns.