This study presents an innovative methodology for predicting seismic-induced sliding displacement, a key determinant in evaluating the seismic stability of landfills. The novelty of this research lies in the incorporation of the softening characteristics of the geosynthetic interface within the liner system, a factor that has been largely overlooked in previous studies. A dynamic stability analysis was performed on a landfill using the ABAQUS software, with an emphasis on the impact of coupled parameters, particularly the strength of the interface. The results highlight PGA (Peak Ground Acceleration), PGV (Peak Ground Velocity), Ia (Arias Intensity), and residual interface shear strength (μ) as effective predictors. The study further identifies the combination of PGA and μ as the optimal parameter pairing for predicting the seismic permanent deformation of the landfill. A multi-dimensional data regression approach was employed to propose a calculation formula for seismic permanent deformation, taking into account liner damage. To enhance the seismic design methodology for landfills, the probability density function was integrated into the study. This innovative approach provides a new perspective on seismic stability assessment in landfill engineering and designs.

中文翻译：

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考虑衬垫系统内 GMB-GCL 界面强度参数的垃圾填埋场地震诱发变形的改进方法


本研究提出了一种预测地震引起的滑动位移的创新方法，这是评估垃圾填埋场地震稳定性的关键决定因素。这项研究的新颖之处在于将土工合成材料界面的软化特性纳入衬垫系统中，这是在以前的研究中在很大程度上被忽视的因素。使用 ABAQUS 软件对垃圾填埋场进行了动态稳定性分析，重点是耦合参数的影响，尤其是界面的强度。结果突出了 PGA（峰值地面加速度）、PGV（峰值地面速度）、Ia（Arias 强度）和残余界面剪切强度 （μ） 作为有效的预测因子。该研究进一步确定了 PGA 和 μ 的组合是预测垃圾填埋场地震永久变形的最佳参数对。采用多维数据回归方法提出了地震永久变形的计算公式，同时考虑了衬垫损伤。为了增强垃圾填埋场的抗震设计方法，将概率密度函数集成到研究中。这种创新方法为垃圾填埋场工程和设计中的地震稳定性评估提供了新的视角。