Precast concrete frame structures are widely adopted around the world due to their various advantages, so it is important to study their seismic performance. The development of damage mechanics has enabled us to accurately investigate the typical failure mechanisms of precast structures. This paper presents three of the most commonly used modeling approaches based on damage mechanics for analysis of precast reinforced concrete structures under cyclic loading and compares the performance of the three models. Particularly, the shear behavior of the joint panel and the bond-slip behavior of the beam–column interfaces are especially considered, which are the key issues for precast concrete structures. First, the fundamental assumptions, formulations, and modeling strategies are given in detail for each approach. Then, the unified damage mechanics for concrete is introduced, and the model for reinforcement bars and the consideration of the bond-slip effect are also presented. Several benchmark cyclic tests of precast beam-to-column connections are chosen to evaluate the accuracy and efficiency of the modeling approaches. The numerical results, e.g. the capacities, deformations, and energy dissipation of the connections, are compared to the experimental results to show the ability of each approach. With this study, we can gain a further understanding of the characteristics and applicability of each modeling approach, helping us make a better decision in choosing which modeling approach is appropriate.

中文翻译：

---

基于损伤力学的预制混凝土结构循环分析建模方法：比较研究

预制混凝土框架结构因其各种优点在世界范围内被广泛采用，因此研究其抗震性能非常重要。损伤力学的发展使我们能够准确地研究预制结构的典型失效机制。本文介绍了三种最常用的基于损伤力学的建模方法，用于分析在循环载荷下的预制钢筋混凝土结构，并比较了三种模型的性能。特别是节点面板的剪切行为和梁柱界面的粘结滑移行为被特别考虑，这是预制混凝土结构的关键问题。首先，详细给出了每种方法的基本假设、公式和建模策略。然后，介绍了混凝土的统一损伤力学，并给出了钢筋模型和对黏结滑移效应的考虑。选择了预制梁柱连接的几个基准循环测试来评估建模方法的准确性和效率。将数值结果（例如连接的容量、变形和能量耗散）与实验结果进行比较，以显示每种方法的能力。通过这项研究，我们可以进一步了解每种建模方法的特点和适用性，帮助我们在选择合适的建模方法时做出更好的决定。选择了预制梁柱连接的几个基准循环测试来评估建模方法的准确性和效率。将数值结果（例如连接的容量、变形和能量耗散）与实验结果进行比较，以显示每种方法的能力。通过这项研究，我们可以进一步了解每种建模方法的特点和适用性，帮助我们在选择合适的建模方法时做出更好的决定。选择了预制梁柱连接的几个基准循环测试来评估建模方法的准确性和效率。将数值结果（例如连接的容量、变形和能量耗散）与实验结果进行比较，以显示每种方法的能力。通过这项研究，我们可以进一步了解每种建模方法的特点和适用性，帮助我们在选择合适的建模方法时做出更好的决定。