Pérez-González Erdrick, Bilodeau Jean-Pascal
Department of Civil and Water Engineering, Université Laval, Québec, QC G1V 0A6, Canada.
Materials (Basel). 2024 Jul 9;17(14):3384. doi: 10.3390/ma17143384.
Accurately characterizing permanent deformation in granular materials subjected to cyclic loading is crucial for pavement design. This paper introduces an alternative approach to characterizing permanent deformation in a framework that reduces the number of load cycle repetitions by applying an alternative analytical strategy based on plastic strain rate variation over time. The methodology uses a cycle-hardening approach to establish correlations between short-term (post-compaction) and long-term (shakedown state) plastic strain accumulation. This alternative approach provides an efficient means to accelerate the characterization of permanent deformation, ensuring the integrity and validity of the assessment in a more time-efficient and resource-optimized way.
准确表征循环加载下粒料中的永久变形对于路面设计至关重要。本文介绍了一种在一个框架内表征永久变形的替代方法，该框架通过应用基于随时间变化的塑性应变率的替代分析策略来减少加载循环重复次数。该方法采用循环硬化方法来建立短期（压实后）和长期（安定状态）塑性应变累积之间的相关性。这种替代方法提供了一种加速永久变形表征的有效手段，以更高效的时间和优化的资源确保评估的完整性和有效性。
