Connection failure between precast components greatly increases the risk of collapse of a precast concrete (PC) frame during earthquakes. In this study, a PC frame structure system with sector lead-viscoelastic damper (SLVD) is proposed, in which the SLVD not only protects the wet connection but also absorbs input energy in earthquakes. Two two-storey two-bay PC frame were constructed, one without SLVD (PC specimen) and the other with SLVDs (PS specimen). These PC frames were tested under cyclic loading and compared to an analogous monolithic frame (RC specimen). The differences in hysteretic curves, bearing capacity, strength and stiffness degradation, and energy dissipation capacity of the three specimens are compared in detail to investigate the impact of SLVD on the seismic performance of the PC frame. The experimental results show that the bearing capacity of the PS specimen in positive and negative loading directions increased by 42.53% and 31.26%, respectively, compared with the PC specimen. The ultimate deformation capacity and ductility of the PS specimen were better than those of the PC specimen. The seismic performance of the precast frame with SLVDs was similar to that of the monolithic reinforcement frame structure.

中文翻译：

---

带扇形铅粘弹性阻尼器的预制混凝土抗弯框架系统试验研究

预制构件之间的连接故障大大增加了地震期间预制混凝土 (PC) 框架倒塌的风险。在这项研究中，提出了一种带有扇形铅粘弹性阻尼器 (SLVD) 的 PC 框架结构系统，其中 SLVD 不仅可以保护湿连接，还可以吸收地震中的输入能量。建造了两个两层两间的 PC 框架，一个没有 SLVD（PC 样本），另一个带有 SLVD（PS 样本）。这些 PC 框架在循环载荷下进行了测试，并与类似的整体框架（RC 样本）进行了比较。详细比较了三种试件在滞回曲线、承载力、强度和刚度退化、耗能能力等方面的差异，研究了SLVD对PC框架抗震性能的影响。试验结果表明，与PC试件相比，PS试件在正负加载方向的承载能力分别提高了42.53%和31.26%。PS试件的极限变形能力和延展性优于PC试件。带有 SLVD 的预制框架的抗震性能与整体钢筋框架结构的抗震性能相似。