原文传递
Validation of prestressed concrete high-fidelity finite element analysis
| 题名： | Validation of prestressed concrete high-fidelity finite element analysis |
| 正文语种： | 英文 |
| 作者： | Aaron Freidenberg; Lyle R. Milliman; Benjamin Parmer; Gbenga Olaolorun, Evan Pape; Bradley Durant |
| 关键词： | Blast;finite element analysis; pretensioned; simulation; Winfrith model |
| 摘要： | Structural behavior of pretensioned concrete beams can be difcult to predict. For example, deections of pretensioned concrete beams are difcult to predict analytically but are sometimes needed for serviceability or construction considerations. A prestressed concrete beam’s response to dynamic loads or under extreme loads, such as blast, are also difcult to predict. Prestressed concrete structures other than slender beams present yet another challenge. A high-delity nite element analysis approach is reviewed in this paper, and it can be used to predict the entire dynamic response up to failure for pretensioned concrete structures of any geometry under any loading. To demonstrate this computational method, four pretensioned concrete beams of varying geometries were loaded quasistatically well beyond the elastic regime of both the concrete and the steel prestressing strands and the analytical results were compared with experimental results. The method is described in detail, and the deections and strains from the simulations (including visualization of cracks) from the simulations are compared with the test data. It is demonstrated that the computer models are able to predict the entire load deection response within a maximum error of 6%. Qualitative results, namely crack patterns, are compared as well. |
| 出版年： | 2019 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 期： | 5 |
| 页码： | 30-42 |
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