Seismic Performance-based design demands reliable means for profound understanding of inelastic and non-linear dynamic behavior of civil structures. In this study, a hybrid experimental and numerical approach for seismic assessment of soil-nailed structures is introduced which incorporates simple static loading of a small-scale physical model and non-linear dynamic analysis of a two degree-of-freedom (2 DOF) system. A vertical loading pattern was applied on a small-scale modeling test behind a soil-reinforced block at the surface to mobilize extra lateral pressure on the reinforced soil zone. Two non-linear force–displacement relations obtained from the lateral pressure and facing displacement values of the physical test have been denoted as capacity curves and employed as the non-linear stiffness of the 2 DOF springs. The capacity curves obtained from this approach inherently take into account the complexities of soil, nail, soil-nail-facing interactions and geometrical nonlinearities. The results of dynamic analysis from the 2 DOF model are presented in terms of bottom and top displacements as the direct performance of the structure under seismic excitation. A soil-nailed wall was tested under different input motions on a shaking table and the results were compared to assess the accuracy of the approach and identify the performance levels of soil-nailed structures.

基于抗震性能的设计需要可靠的手段来深刻理解土木结构的非弹性和非线性动力行为。在这项研究中，介绍了一种混合试验和数值方法，用于土钉结构的地震评估，该方法结合了小规模物理模型的简单静态载荷和两个自由度（2 DOF）的非线性动力分析系统。在表面的土壤加固砌块后面的小规模模型测试中应用了垂直荷载模式，以在加固的土壤区域上动员额外的侧向压力。从侧向压力和物理测试的相对位移值获得的两个非线性力-位移关系已表示为能力曲线，并已用作2个自由度弹簧的非线性刚度。通过这种方法获得的容量曲线固有地考虑了土壤，指甲，面对土壤-指甲的相互作用和几何非线性的复杂性。来自2自由度模型的动力分析结果以底部和顶部位移的形式表示，作为地震激励下结构的直接性能。在振动台上以不同的输入运动测试了土钉墙，并比较了结果，以评估该方法的准确性并确定土钉结构的性能水平。来自2自由度模型的动力分析结果以底部和顶部位移的形式表示，作为地震激励下结构的直接性能。在振动台上以不同的输入运动测试了土钉墙，并比较了结果，以评估该方法的准确性并确定土钉结构的性能水平。来自2自由度模型的动力分析结果以底部和顶部位移的形式表示，作为地震激励下结构的直接性能。在振动台上以不同的输入运动测试了土钉墙，并比较了结果，以评估该方法的准确性并确定土钉结构的性能水平。