Compared with traditional precast concrete composite shear walls (PCCSWs) with two boundary elements adjacent to edges, the PCCSWs with multiple boundary elements investigated in this paper have extra boundary elements at the intersections with other shear walls. In this paper, low reversed cyclic loading tests were conducted on three full-scale shear wall specimens with multiple boundary elements under in-plane loading and two full-scale shear wall specimens under out-of-plane loading. The in-plane loaded specimens included a PCCSW with double precast layers (i.e. precast concrete double skin shear wall, PCDSSW), a PCCSW with single precast layer, and a cast-in-pace (CIP) control specimen, whereas the out-of-plane loaded specimens included a PCDSSW and a CIP control specimen. Test results revealed that all specimens failed in bending. The hysteresis loops of the precast composite specimens were stable but slightly pinching, which were similar to those of the corresponding CIP control specimen. Compared with the CIP specimens, the PCDSSWs showed similar energy dissipation. The loading capacity of the precast composite specimens was generally a little lower than that of the corresponding CIP specimen with difference not more than 15%. In the in-plane loading tests, the PCDSSW reached higher displacement ductility (2.45) than the CIP specimen (1.88), whereas the ductility of the PCCSW with single precast layer was relatively low. Regarding the specimens under out-of-plane loading, the ductility of the PCDSSW (3.83) was close to that of the CIP specimen (3.02). Moreover, the stiffness degradation of the precast composite specimens was found to be comparable to that of the control specimens. Based on the test results, a restoring force model was developed.

中文翻译：

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多边界元预制混凝土组合剪力墙的抗震性能

与传统的具有两个相邻边缘单元的预制混凝土复合剪力墙（PCCSWs）相比，本文研究的具有多个边界单元的PCCSWs在与其他剪力墙的交叉处具有额外的边界单元。在本文中，对三个具有多个边界单元的全尺寸剪力墙试件在平面内加载和两个全尺寸剪力墙试件在平面外加载下进行了低反向循环加载试验。平面内加载的试件包括一个带有双预制层的 PCCSW（即预制混凝土双蒙皮剪力墙，PCDSSW）、一个带有单预制层的 PCCSW 和一个同步浇筑 (CIP) 控制试件。平面加载的样本包括一个 PCDSSW 和一个 CIP 控制样本。测试结果表明，所有试样均未弯曲。预制复合材料试件的磁滞回线稳定但有轻微挤压，这与相应的 CIP 控制试件相似。与 CIP 试样相比，PCDSSW 显示出相似的能量耗散。预制复合材料试件的承载能力一般略低于相应的 CIP 试件，差异不超过 15%。在面内加载试验中，PCDSSW 的位移延性 (2.45) 高于 CIP 试件 (1.88)，而单预制层的 PCCSW 的延性相对较低。对于面外载荷下的试件，PCDSSW 的延展性（3.83）接近 CIP 试件的延展性（3.02）。而且，发现预制复合材料试样的刚度退化与对照试样的刚度退化相当。根据试验结果，建立了恢复力模型。