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<p>To explore the applicability of three-dimensional (3D) peridynamics (PD) in complex stress, 36 reinforced concrete (RC) beams without web reinforcement were designed and tested, and investigated the effects of shear span ratio, longitudinal reinforcement, and flange width on the shear strength of beams. A 3D discretization model of all specimens in the test was established, and the specimens were simulated using the PD method. To consider the heterogeneity of concrete, a non-homogeneous PD model considering aggregate size was established, and the simulation results were compared with the original model. The results indicate that the shear span ratio, longitudinal reinforcement, and flange width have a significant impact on the shear strength of RC beams without web reinforcement. The 3D PD model has a good applicability for RC beams under complex stress. Without considering computational costs, heterogeneous models can obtain more accurate results than homogeneous models and better reflect the process of concrete beam failure.</p>

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Numerical simulation and shear strength research of reinforced concrete beam based on peridynamics

  • 期刊论文

  • 发表日期：

    2025年6月25日

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  • Zhongwen Gong,
  • Ergang Xiong,
  • Shang Wang,
  • Yao Zhang,
  • Yupeng Xie

摘要

To explore the applicability of three-dimensional (3D) peridynamics (PD) in complex stress, 36 reinforced concrete (RC) beams without web reinforcement were designed and tested, and investigated the effects of shear span ratio, longitudinal reinforcement, and flange width on the shear strength of beams. A 3D discretization model of all specimens in the test was established, and the specimens were simulated using the PD method. To consider the heterogeneity of concrete, a non-homogeneous PD model considering aggregate size was established, and the simulation results were compared with the original model. The results indicate that the shear span ratio, longitudinal reinforcement, and flange width have a significant impact on the shear strength of RC beams without web reinforcement. The 3D PD model has a good applicability for RC beams under complex stress. Without considering computational costs, heterogeneous models can obtain more accurate results than homogeneous models and better reflect the process of concrete beam failure.