Abstract Considering the devastating damages of ‘forward-directivity’ on structures, a series of finite element models were conducted to evaluate the seismic performance of cantilever retaining walls under near-fault excitations. The wavelet approach was used to extract the velocity pulse of near-source motions, and a semi-artificial records reagent far-field earthquake was produced. Both were then imposed on the model, separately. The results indicated a vivid difference in lateral displacement, in which some cases up to differences of experienced 85% and forces along the walls were approximately equal. In view of this finding, a wide range of PGAs was applied to the near-fault scenarios of the models. The captured movements were compared with the recommended criteria for performance-based aseismic design of retaining structures. According to the numerical analysis, in most earthquakes, for accelerations exceeding 0.4 g, lateral displacement of the wall had a higher value than the permissible proposed limits. Also, accelerations exceeding 0.6 g for both near and far-field records resulted in wall failure (>5% H). The final section of this research presents a comprehensive parametric study on the effects of ground motion characteristics and soil mechanical properties on system performance.

中文翻译：

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近断层地震动作用下悬臂式挡土墙的性能分析

摘要 针对“前向性”对结构的破坏性破坏，建立了一系列有限元模型，对悬臂式挡土墙在近断层激励下的抗震性能进行了评估。采用小波方法提取近源运动速度脉冲，制作半人工记录试剂远场地震。然后将两者分别强加给模型。结果表明横向位移存在明显差异，在某些情况下，差异高达 85%，沿壁的力大致相等。鉴于这一发现，广泛的 PGA 被应用于模型的近故障场景。将捕获的运动与基于性能的挡土结构抗震设计的推荐标准进行比较。根据数值分析，在大多数地震中，对于超过 0.4 g 的加速度，墙体的侧向位移值高于允许的建议限值。此外，近场和远场记录的加速度超过 0.6 g 会导致壁失效（> 5% H）。本研究的最后一部分对地震动特性和土壤力学特性对系统性能的影响进行了全面的参数研究。