【摘要】 为了完善坐浆法钢筋套筒灌浆连接预制柱(简称“坐浆法预制柱”)的施工工艺和研究其抗震性能，制作了8个坐浆法预制柱并对其进行了拟静力试验，与连通腔法预制柱和整浇柱进行对比，研究了坐浆法预制柱的破坏形态、滞回曲线、耗能能力、骨架曲线、延性及承载力，分析了结合面做法、坐浆法产品和轴压比对坐浆法预制柱抗震性能的影响。结果表明：坐浆法预制柱均发生接缝压弯破坏，且破坏集中在接缝区域；坐浆法预制柱的峰值荷载、耗能能力和延性均与连通腔法预制柱和整浇柱相似；设置粗糙面对坐浆法预制柱的峰值荷载、耗能能力和延性影响不大；峰值荷载时，接缝水平滑移、柱转动变形、柱弯曲变形和柱剪切变形约占柱顶侧移的10%、50%、35%和5%。根据试验结果，建立考虑剪力影响的坐浆法预制柱接缝压弯承载力计算方法、压弯剪作用下的接缝剪力-滑移模型及考虑接缝水平滑移和套筒区作为刚域的柱顶侧移计算方法；建议的荷载-变形模型考虑了多种影响因素，与试验结果相接近，便于坐浆法预制柱的结构性能化设计。研究结果表明，工程上可推广应用坐浆法工艺，且采用坐浆法时预制柱底可不进行粗糙面处理。更多还原

【Abstract】 To study the seismic performance of precast column with grout sleeve splicing of rebars constructed by sitting grouting method, eight specimens were constructed and subjected to quasi-static loading tests, and the results were compared with precast column constructed by connected cavity method and monolithic column. The failure mode, hysteresis curve, energy dissipation capacity, skeleton curve, displacement ductility and bearing capacity of the precast columns constructed by sitting grouting method were studied. The effects of connection surface process, sitting grouting construction technology and axial compression ratio on the seismic behavior of the precast columns constructed by sitting grouting method were analyzed. The test results show that the joint flexural failure occurred in the specimens with sitting grouting method, and the damage was concentrated in the joint area. The peak load, energy dissipation capacity and displacement ductility of the specimens of the sitting grouting method are similar to those of the connected cavity method specimens and the whole pouring specimens. The setting roughness has little effect on the peak load, energy dissipation capacity and displacement ductility of the specimen by sitting grouting method. Under peak load, the horizontal slip of the joint, the rotational deformation of the column, the flexural deformation of the column and the shear deformation of the column account for about 10%, 50%, 35% and 5% of the horizontal deformation of the column top, and the horizontal slip of the joint should be considered in the design. According to the test results, the calculation method of compression bending bearing capacity of joints of precast columns with sitting grouting method considering the effect of shear force, the model of joint shear-slip under compression bending shear, and the calculation method of lateral movement of the column top considering the horizontal slip of joints and the sleeve area as the rigid domain are established. The proposed loading-deflection model has taken into account a variety of influencing factors, which is close to the experimental results, and it is convenient for the structural performance design of the precast columns with sitting grouting method. It can be concluded that the process of sitting grouting method can be popularized in engineering, and the bottom of precast columns can be treated without rough surface when using sitting grouting method.更多还原