To solve the fabrication problems of traditional precast shear walls caused by too many connections joints, a new type of precast shear wall with unconnected vertically distributed reinforcements and concealed bracings is developed in this paper. Four full-scale shear walls, including one cast-in-place specimen and three precast specimens, were tested under low-cycle lateral loading conditions to evaluate the seismic performance of the new type of precast shear wall. The test results showed that the loading capacity and energy dissipation of the new type of precast shear wall were comparable to those of the cast-in-place specimen; however, the failure mode was similar to the damage mechanism of an infilled wall frame, not the traditional bending-shear mode of shear walls. Then, a new strut-and-tie model considering dowel action was proposed for this new type of precast shear wall. Finally, a parametric study was conducted by finite element analysis to determine a reasonable value of the effective strength coefficient for the strut-and-tie model. Good agreement was achieved between the test and model results.

中文翻译：

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具有未连接的垂直分布钢筋的预制混凝土剪力墙的准静态试验和拉杆拉杆建模

为解决传统预制剪力墙因连接节点过多而造成的制作难题，本文研制了一种新型竖向无连接配筋暗撑预制剪力墙。4个全尺寸剪力墙，包括一个现浇试件和三个预制试件，在低周侧向荷载条件下进行了测试，以评估新型预制剪力墙的抗震性能。试验结果表明，新型预制剪力墙的承载能力和耗能与现浇试件相当；然而，破坏模式类似于填充墙框架的破坏机制，而不是剪力墙的传统弯剪模式。然后，针对这种新型预制剪力墙，提出了一种考虑销钉作用的新支柱和拉杆模型。最后，通过有限元分析进行参数研究，以确定拉杆模型的有效强度系数的合理值。测试和模型结果之间取得了良好的一致性。