The assumptions made in design codes can result in unconservative predictions of shear strength for reinforced concrete members. The limitations of empirical methods have prompted the development and use of numerical techniques. A three-dimensional bond-based peridynamic framework is developed for predicting shear failure in reinforced concrete members. The predictive accuracy and generality of the framework is assessed against existing experimental results. Nine reinforced concrete beams that exhibit a wide range of failure modes are modelled. The shear-span-to-depth ratio is systematically varied from 1 to 8 to facilitate a study of different load-transfer mechanisms and failure modes. A comprehensive validation study such as this has until now been missing in the peridynamic literature. A bilinear constitutive law is employed, and the sensitivity of the model is tested using two levels of mesh refinement. The predictive error between the experimental and numerical failure loads ranges from +3% to −57%, highlighting the importance of validation against a series of problems. The results demonstrate that the model captures many of the factors that contribute to shear and bending resistance. New insights into the capabilities and deficiencies of the peridynamic model are gained by comparing the expected load-transfer mechanisms with the predictive error.

设计规范中的假设可能导致钢筋混凝土构件抗剪强度的预测不保守。经验方法的局限性促进了数值技术的发展和使用。开发了一种基于三维粘结的近场动力学框架，用于预测钢筋混凝土构件的剪切破坏。该框架的预测准确性和通用性是根据现有的实验结果进行评估的。对九根钢筋混凝土梁表现出广泛的破坏模式进行建模。剪跨深度比从 1 到 8 有系统地变化，以促进对不同载荷传递机制和失效模式的研究。迄今为止，近场动力学文献中还缺少像这样的综合验证研究。采用双线性本构律，并使用两级网格细化测试模型的灵敏度。实验和数值失效载荷之间的预测误差范围从 +3% 到 -57%，突出了针对一系列问题进行验证的重要性。结果表明，该模型捕获了许多有助于抗剪和抗弯曲的因素。通过将预期的负载转移机制与预测误差进行比较，可以获得对近场动力学模型的能力和缺陷的新见解。结果表明，该模型捕获了许多有助于抗剪和抗弯曲的因素。通过将预期的负载转移机制与预测误差进行比较，可以获得对近场动力学模型的能力和缺陷的新见解。结果表明，该模型捕获了许多有助于抗剪和抗弯曲的因素。通过将预期的负载转移机制与预测误差进行比较，可以获得对近场动力学模型的能力和缺陷的新见解。