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Numerical and digital image correlation study of the flexural behavior of prestressed ultra-high-performance concrete beams made from locally available materials
| 题名： | Numerical and digital image correlation study of the flexural behavior of prestressed ultra-high-performance concrete beams made from locally available materials |
| 正文语种： | eng |
| 作者： | Wei Sun;Brad D. Weldon;Michael J. McGinnis;Ruinian Jiang |
| 作者单位： | department of Civil Engineering at New Mexico State University in Las Cruces N.Mex;Civil Engineering in the department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame in Notre Dame Ind;School of Engineering and Engineering Technology at Letourneau University in Longview Tex;department of Civil Engineering at New Mexico State University in Las Cruces N.Mex |
| 关键词： | Concrete damage plasticity model; digital image correlation; flexural behavior; numerical modeling; prestressing strands; surface traction; UHPC; ultra-high-performance concrete |
| 摘要： | This paper presents finite element simulations of the flexural behavior of three prestressed ultra-high-performance concrete (UHPC) beams based on the concrete damaged plasticity model (CDPM) available within Abaqus. A novel numerical model that applies the prestressing force through surface traction is proposed. The flexural deformation of the prestressed UHPC beams is simulated from the application of the prestressing force through failure under flexural loading. Material properties were measured and informed values for CDPM input parameters. The model was compared with four-point loading tests previously conducted to study the flexural behavior of large-scale prestressed UHPC beams. Digital image correlation (DIC), supplemented with traditional sensors, was used during the test to monitor behavior. The primary results based on the numerical modeling are as follows: 1.The model is validated to accurately simulate the flexural behavior of prestressed UHPC beams, both in global deflection and local strain.2.The prestressing process, including camber deformations, is effectively simulated.3.The new approach to apply prestressing force in the model can be applied in scenarios requiring large prestressing forces.4.The numerical results are also validated through comparison with DIC results.The new numerical modeling approach will be effective for guiding experimental studies and design of prestressed UHPC beam elements. |
| 出版年： | 2024 |
| 期刊名称： | PCI Journal |
| 卷： | 69 |
| 期： | 1 |
| 页码： | 22-39 |
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