In this paper, a novel Internally Stiffened Double Steel Plate Shear Wall (ISD-SPSW) is proposed based on the concept of improving the buckling mode of steel plates and enhancing the lateral resistance of steel plate shear wall (SPSW). The ISD-SPSW consists of double outer steel plates on both sides, inner stiffened rib plates, and boundary members. The seismic behavior of ISD-SPSW was investigated through tests and numerical simulations. Five ISD-SPSW specimens with different heights of the wall, thickness of the outer steel plate and boundary member, and different numbers of internally stiffened steel plates were investigated in cyclic loading tests. The performance indexes such as hysteresis curves, strain curves, and skeleton curves of ISD-SPSW were obtained. The finite element model of ISD-SPSW was established and verified by the test results. The test results reveal two distinct failure modes for the ISD-SPSW. The first mode involves the failure of diagonal tension bands, which is a result of local buckling in the outer steel plates. The second mode is characterized by the overall instability of the shear wall, resulting from the out-of-plane deformation of the boundary members. Lowering the height of the wall can markedly improve the load-bearing capacity and out-of-plane stability of ISD-SPSW. Increasing the thickness of the outer steel plate can improve the ultimate load-bearing capacity, but has adverse effect on the boundary members. Reducing the thickness of the boundary member can significantly reduce the load-bearing capacity and seismic performance. Reducing the number of inner stiffened rib plates decreases the shear load-bearing capacity and energy dissipation capacity. The ductility coefficient of most specimens is greater than 3.0, indicating that the ISD-SPSW has good ductility. In addition, the results of the established finite element model are in good agreement with the test results, which verifies the accuracy of the model.

中文翻译：

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新型内加劲双钢板剪力墙循环加载性能


本文基于改善钢板屈曲模式、增强钢板剪力墙（SPSW）抗侧力的理念，提出了一种新型内加筋双钢板剪力墙（ISD-SPSW）。 ISD-SPSW由两侧双层外钢板、内加强肋板和边界构件组成。通过试验和数值模拟研究了ISD-SPSW的抗震性能。对五个具有不同壁高、外钢板厚度和边界构件厚度以及不同内加筋钢板数量的 ISD-SPSW 试件进行循环加载试验。获得了ISD-SPSW的滞回曲线、应变曲线、骨架曲线等性能指标。建立了ISD-SPSW的有限元模型，并通过试验结果进行了验证。测试结果揭示了 ISD-SPSW 的两种不同的故障模式。第一种模式涉及对角张力带的失效，这是外部钢板局部屈曲的结果。第二种模式的特点是剪力墙的整体不稳定性，这是由边界构件的平面外变形引起的。降低墙体高度可以显着提高ISD-SPSW的承载能力和面外稳定性。增加外钢板厚度可以提高极限承载力，但对边界构件有不利影响。减小边界构件的厚度会显着降低承载能力和抗震性能。减少内加劲肋板的数量会降低剪切承载能力和耗能能力。大多数试样的延展系数大于3。0，表明ISD-SPSW具有良好的延展性。此外，建立的有限元模型的结果与试验结果吻合较好，验证了模型的准确性。